|
|
Home | Alpha Telephone | Domain Names | Web Hosting | Get Traffic | xrEvidence | xrSoccer United States Patent
Video signal recording apparatus which receives a digital progressive scan TV signal and switches the progressive signal frame by frame alternately A video signal recording apparatus including a switching device for receiving a digital progressive scan TV signal having a frame cycle which is 1/2 of the frame cycle of an interlaced scan TV signal and switching the progressive scan TV signal frame by frame alternately; a coding device for performing high-rate coding of data corresponding to one frame of the progressive scan TV signal to the same code amount as obtained by high-rate coding of data corresponding to one frame including two successive fields of an interlaced scan standard-definition TV signal; and a recording device for recording the data processed with the high-rate coding in the same number of tracks as the data corresponding to one frame of the interlaced scan standard-definition TV signal.
Primary Examiner: Chin; Tommy P. Assistant Examiner: Vincent; David R. Attorney, Agent or Firm: What is claimed is: 1. A video signal recording apparatus, comprising: switching means for receiving a digital progressive scan TV signal (having a frame cycle which is 1/2 of the frame cycle of an interlaced scan TV signal) and switching the progressive scan TV signal frame by frame alternately; coding means for performing high-rate coding of data corresponding to one frame of the progressive scan TV signal to the same code amount as obtained by high-rate coding of data corresponding to one frame including two successive fields of an interlaced scan standard-definition TV signal; and recording means for recording the data processed with the high-rate coding in the same number of tracks as the data corresponding to one frame of the interlaced scan standard-definition TV signal. 2. A video signal recording apparatus according to claim 1, wherein the recording means include two interlaced scan TV signal recording devices. 3. A video signal recording apparatus according to claim 2, wherein the switching means alternately transmits frames of the progressive scan TV signal to each one of the two interlaced scan TV signal recording devices. 4. A video signal recording apparatus according to claim 3, wherein: each interlaced scan television signal recording device includes dividing means for dividing the data corresponding to one frame of the progressive scan TV signal into a plurality of coding units, and the coding means performs a high-rate coding of each of the plurality of coding units. 5. A video signal recording apparatus according to claim 4, wherein the coding means are included in each of the two interlaced scan TV signal recording devices, and the coding means uses intra-frame coding to perform the high-rate coding. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-rate coding device for performing high-rate coding of an input signal, a video signal recording and reproduction apparatus for recording and reproducing data obtained by the high-rate coding and to a video signal transmitting apparatus for transmitting data obtained by the high-rate coding. (In this specification, high efficiency coding and high efficiency decoding are expressed as "high-rate coding" and "high-rate decoding".) 2. Description of the Related Art Video signal recording apparatuses for digitally recording a video signal are generally classified into two types: One type of apparatuses, compress a standard-definition (SD) TV signal to 25 Mbps by performing intraframe coding for recording. The other type of apparatuses compress a high vision signal to 50 Mpbs for recording. In these types of apparatuses, the type of video signals usable for input and output and the quality of the signals obtained are limited. It is extremely difficult to record and reproduce a video signal which is of a different type from the signal which are input to or output from devices in the video signal recording apparatus without significantly changing the recording and reproducing processing. For example, in a video signal recording apparatus which receives a digital TV signal obtained by interlaced scanning (hereinafter, referred to as an "interlaced scan TV signal") and compresses such a signal for recording, two successive fields of the interlaced scan TV signal are combined and converted into one frame of a progressive scan TV signal (a TV signal obtained by progressive scanning) before performing compression and recording. In the case when a progressive scan TV signal is used as an input signal, the input signal is already framed, and the frame cycle is 1/2 of the cycle of an interlaced scan TV signal. Such a progressive scan TV signal cannot be recorded by a conventional video signal recording apparatus. In a video signal recording apparatus which receives a progressive scan TV signal and compresses such a signal for recording, the progressive scan TV signal is switched frame by frame to be sent to two channels. By such switching, data corresponding to one frame of the progressive scan TV signal is processed with high-rate coding to have the same quantity of codes as obtained by high-rate coding of data corresponding to one frame of an interlaced scan standard-definition TV signal including two successive fields. The data obtained by the high-rate coding is recorded in the same number of tracks as used for recording data corresponding to one frame of an interlaced scan TV signal. In such a method, however, the data processing is performed frame by frame. Accordingly, recording of a still image cannot utilize the correlation between data corresponding to different frames, thus preventing improvement in the coding efficiency. Further, since the data is divided into two channels, time delay occurs between images which are output from different channels. Due to such time delay, data corresponding to different frames are arranged by turns, resulting in deterioration in the quality of an image obtained in a search picture mode. Moreover, in order to perform high-rate coding of a signal including a standard-definition TV signal defined by 4:2:2 (hereinafter, referred to as a "4:2:2 signal") conforming to the studio standards described in CCIR Recommendation 601-1 and an auxiliary signal of a luminance signal required for progressive scanning, the conventional dividing method is not suitable for the following reason: By the division performed by the conventional dividing method, the number of effective pixels of the data corresponding to a color difference signal of the resultant signal is decreased, and thus ICs in the conventional video signal recording apparatus cannot be used for high-rate coding. In conventional high-rate coding devices for performing high-rate coding and conventional video signal transmitting apparatuses for transmitting a video signal coded by the conventional high-rate coding devices, the type of the image signal usable for input and output and the quality of the resultant signal are limited. Accordingly, it is extremely difficult to change the specifications of such apparatuses and the characteristics of the resultant signals without significantly changing the high-rate coding processing, data recording processing, and the like. Shuffling is one method used for performing high-rate coding in the conventional video signal recording apparatus for compressing a TV signal to be recorded in a magnetic tape. By shuffling, an image plane is divided into a plurality of areas. A prescribed number of blocks are obtained from prescribed positions of each area to form a coding unit for high-rate coding. For a high-definition (HD) TV signal, there are three systems regarding the number of the scanning lines and the field frequency: 1125 scanning lines/60 Hz, 1050 scanning lines/60 Hz, and 1250 scanning lines/50 Hz. In this specification, the system corresponding 1125 scanning lines and 60 Hz, for example, will be referred to as the "1125/60 system". In the case when a signal of the 1125/60 system is used, shuffling is very complicated and thus requires a large circuit for shuffling. SUMMARY OF THE INVENTION In one aspect of the present invention, a video signal recording apparatus includes switching means for receiving a digital progressive scan TV signal having a frame cycle which is 1/2 of the frame cycle of an interlaced scan TV signal and switching the progressive scan TV signal frame by frame alternately; coding means for performing high-rate coding of data corresponding to one frame of the progressive scan TV signal to the same code amount as obtained by high-rate coding of data corresponding to one frame including two successive fields of an interlaced scan standard-definition TV signal; and recording means for recording the data processed with the high-rate coding in the same number of tracks as the data corresponding to one frame of the interlaced scan standard-definition TV signal. In another aspect of the present invention, a video signal recording apparatus includes rearranging means for receiving a digital progressive scan TV signal and rearranging data corresponding to one frame of the progressive scan TV signal into data corresponding to one field of an interlaced scan high-definition TV signal; dividing means for dividing the rearranged data into a plurality of coding units; coding means for performing high-rate coding of the plurality of coding units; and recording means for recording the coding units obtained by high-rate coding. The dividing means, the coding means and the recording means are the same as dividing means, coding means and recording means used for processing an interlaced scan high-definition TV signal. In one embodiment of the invention, data corresponding to two successive frames of the progressive scan TV signal is processed as one unit in an operation performed after being divided by the dividing means. In another aspect of the present invention, a video signal recording apparatus includes dividing means for receiving a digital progressive scan TV signal and dividing the signal into the same number of coding units as data corresponding to one frame of an interlaced scan standard-definition TV signal; coding means for performing high-rate coding of the coding units; and recording means for recording the coding units processed with by high-rate coding. The coding means and the recording means are the same as coding means and recording means used for processing an interlaced scan high-definition TV signal. In one embodiment of the invention, data corresponding to two successive frames of the progressive scan TV signal is processed in an operation performed after being divided by the dividing means. In one aspect of the present invention, a video signal recording apparatus includes switching means for receiving a digital TV signal, deciding whether the TV signal is a progressive scan TV signal or an interlaced scan TV signal, and selecting a method for dividing the TV signal into a plurality of coding units in a suitable manner to the type of the TV signal; dividing means for dividing the TV signal into the plurality of coding units in accordance with the type of the TV signal; coding means for performing high-rate coding of the coding units; and recording means for recording the coding units processed with high-rate coding. The dividing means, the coding means and the recording means are the same as dividing means, coding means and recording means used for processing an interlaced scan high-definition TV signal. In one embodiment of the invention, the data corresponding to two successive frames of the progressive scan TV signal is processed as one unit in an operation performed after being divided by the dividing means, and the data corresponding to two fields of the interlaced scan TV signal is processed as one unit in an operation performed after being divided by the dividing means. In another aspect of the present invention, a video signal recording apparatus includes rate conversion means for converting a progressive scan high-definition TV signal in an analog state into a digital signal at one of a sampling frequencies of 40.5 MHz for 59.94 Hz and 40.5.times.1,001 Mhz for 60 Hz for a luminance signal and at a sampling frequency of 13.5.times.1.001 Mhz for a color difference signal to generate a video signal including 720.times.720 effective pixels in horizontal and vertical directions for the luminance signal and 240.times.720 effective pixels in horizontal and vertical directions for the color difference signal; dividing means for dividing data corresponding to one frame of the resultant signal into the same number of coding units as obtained from data corresponding to one frame of an interlaced scan standard-definition TV signal; coding means for performing high-rate coding of the plurality of coding units; and recording means for recording the coding units processed with high-rate coding. In one embodiment of the invention, high-rate coding performed by the coding means is commonly used with high-rate coding for processing an interlaced scan high-definition TV signal. In one embodiment of the invention, the data corresponding to two successive frames of the progressive scan TV signal is processed as one unit in an operation performed after being divided by the dividing means. In another aspect of the present invention, a video signal recording apparatus includes dividing means for dividing the data corresponding to one frame of a digital progressive scan TV signal into 30.times.45 compression blocks in horizontal and vertical directions; coding means for performing high-rate coding of five compression blocks which are away from one another on an image plane as one compression unit; rearranging means for rearranging the compression unit to a prescribed position in ten recording blocks each including 3.times.45 compression blocks in the horizontal and vertical directions; and recording means for respectively recording the recording blocks in tracks on a magnetic tape. In one embodiment of the invention, the rearranging means rearranges the compression unit to a prescribed position in five recording blocks each including 30.times.9 compression blocks in the horizontal and vertical directions, and the recording means records each of the recording blocks to two tracks on the magnetic tape. In another aspect of the present invention, a video signal recording apparatus includes conversion means for receiving a digital progressive scan high-definition TV signal and converting a color difference signal of the TV signal to 1/3 in a vertical direction by a filter; dividing means for dividing the converted signal into the same number of coding units as obtained from data corresponding to one frame of an interlaced scan standard-definition TV signal; coding means for performing high-rate coding of coding units; and recording means for recording the coding units processed with high-rate coding. In one embodiment of the invention, the high-rate coding performed by the coding means is the same as high-rate coding for processing an interlaced scan high-definition TV signal. In one embodiment of the invention, the data corresponding to two successive frames of the progressive scan TV signal is processed as one unit in an operation performed after being divided by the dividing means. In another aspect of the present invention, a video signal recording apparatus includes color difference conversion means for receiving two successive frames of a digital progressive scan high-definition TV signal and converting a color difference signal of each of the frames to 1/2 in a vertical direction by a filter; interlace conversion means for converting the signals obtained by the color difference conversion means so that the converted signals appear to be obtained by interlaced scanning; dividing means for dividing each of the resultant signals into the same number of coding units as obtained from data corresponding to one frame of an interlaced scan standard-definition TV signal; coding means for performing high-rate coding of coding units; and recording means for recording the coding units processed with high-rate coding. In one embodiment of the invention, the high-rate coding of the progressive scan TV signal is performed in the same manner as high-rate coding of an interlaced scan high-definition TV signal. In one aspect of the present invention, a video signal recording apparatus includes combining means for receiving a digital progressive scan TV signal having a frame cycle which is 1/2 of the frame cycle of an interlaced scan TV signal and combining data corresponding to two successive frames of the progressive scan TV signal to generate combination data; coding means for performing high-rate coding of the combination data; and recording means for recording the combination data processed with the high-rate coding. In one embodiment of the invention, the combining means combines data corresponding to two successive frames of the progressive scan TV signal line by line. In one embodiment of the invention, the coding means performs high-rate coding of the combination data to the same code amount as obtained by high-rate coding of data corresponding to one frame of an interlaced scan high-definition TV signal. In one embodiment of the invention, the combining means, the coding means and the recording means are the same as combining means, coding means and recording means for processing an interlaced scan high-definition TV signal. In another aspect of the present invention, a video signal recording apparatus includes switching means for receiving a digital progressive scan TV signal having a frame cycle which is 1/2 of the frame cycle of an interlaced scan TV signal and switching the progressive scan TV signal at 1/n of the frame cycle to be sent to a plurality of channels where n is a positive integer; a plurality of combining means for combining data corresponding to two successive frames of the progressive scan TV signal sent to each of the channels to generate combination data; coding means for performing high-rate coding of the combination data; and recording means for recording the combination data processed with the high-rate coding. In one embodiment of the invention, the combining means combines data corresponding to two frames of the progressive scan TV signal line by line. In one embodiment of the invention, the coding means performs high-rate coding of the combination data to the same code amount as obtained by high-rate coding of data corresponding to one frame of an interlaced scan high-definition TV signal is performed. In one embodiment of the invention, the combining means, the coding means and the recording means are the same as combining means, coding means and recording means for processing an interlaced scan high-definition TV signal. In another aspect of the present invention, a video signal recording apparatus includes switching means for receiving a digital progressive scan TV signal having a frame cycle which is 1/2 of the frame cycle of an interlaced scan TV signal and switching the progressive scan TV signal frame by frame to be sent as image data to first and second channels; first and second dividing means for expanding data corresponding to one frame of the progressive scan TV signal to twice as large in terms of time and dividing the data to the same number of coding units as obtained from data corresponding to one frame of an interlaced scan standard-definition TV signal in the first and second channels, respectively; first and second high-rate coding means for performing high-rate coding of the coding units obtained by the first and second dividing means so as to obtain the same code amount and the same operating speed as obtained by performing high-rate coding of data corresponding to one frame of an interlaced scan standard-definition TV signal; recording means for recording each of the coding units processed with the high-rate coding to an equal number of tracks as data corresponding to one frame of the interlaced scan standard-definition TV signal; a first memory provided after the first dividing means for temporarily storing image data of a first half of a "K"th frame; and a second memory provided after the second dividing means for temporarily storing image data of a first half of a "K+1"th frame. The first dividing means and the first high-rate coding means are included in a first channel; the second dividing means and the second high-rate coding means are included in a second channel; and when image data of a second half of a frame is output to one of the first channel and the second channel, the image data of the first half of the same frame stored in one of the first memory and the second memory is output to the other channel. In another aspect of the present invention, a video signal recording apparatus includes color difference signal generation means for receiving an input signal including a standard-definition TV signal defined as a 4:2:2 signal conforming to the studio standards and an auxiliary signal of a luminance signal required for progressive scanning, and generating a color difference signal which corresponds to an auxiliary signal of a luminance signal of the input signal in order to convert the input signal into a progressive scan TV signal having a frame frequency twice the frame frequency of the standard-definition TV signal defined as a 4:2:2 signal conforming to the studio standards; dividing means for dividing the progressive scan TV signal including the color difference signal output from the color difference signal generation means into two channels to generate two sets of division data; first and second high-rate coding means respectively for performing high-rate coding of the two sets of division data to the code amount as obtained by high-rate coding of data corresponding to one frame of an interlaced scan high-definition TV signal; and recording means for recording each of the two sets of division data processed with the high-rate coding to the same number of tracks as data corresponding to one frame of the interlaced scan high-definition TV signal. In another aspect of the present invention, a video signal recording apparatus includes color difference signal generation means for receiving an input signal including a standard-definition TV signal defined as a 4:2:2 signal conforming to the studio standards and an auxiliary signal of a luminance signal required for progressive scanning, and generating a color difference signal which corresponds to an auxiliary signal of a luminance signal of the input signal in order to convert the input signal into a progressive scan TV signal having a frame frequency twice the frame frequency of the standard-definition TV signal defined as a 4:2:2 signal conforming to the studio standards; dividing means for dividing the progressive scan TV signal including the color difference signal output from the color difference signal generation means into two channels to generate two sets of division data; first and second high-rate coding means respectively for performing high-rate coding of the two sets of division data to the same code amount as obtained by high-rate coding of data corresponding to one frame of an interlaced scan high-definition TV signal; recording means for recording each of the two sets of division data processed with the high-rate coding to the same number of tracks as data corresponding to one frame of the interlaced scan high-definition TV signal; a first memory provided after the first dividing means for temporarily storing image data of a first half of a "K"th frame; and a second memory provided after the second dividing means for temporarily storing image data of a first half of a "K+1"th frame. The first dividing means and the first high-rate coding means are included in a first channel; the second dividing means and the second high-rate coding means are included in a second channel; and when image data of a second half of a frame is output to one of the first channel and the second channel, the image data of the first half of the same frame stored in one of the first memory and the second memory is output to the other channel. In another aspect of the present invention, a video signal recording and reproduction apparatus includes first signal conversion means for receiving a first video signal in which at least a luminance signal is a non-interlaced scan signal and converting the non-interlaced scan signal into an interlaced scan signal to generate a second video signal; recording means for recording the second video signal to a recording medium; reproduction means for reproducing the second video signal from the recording medium; and second signal conversion means for performing conversion of the second video signal in an inverse manner to the conversion performed by the first signal conversion means to generate the first video signal. The first signal conversion means converts each of a plurality of image planes of the non-interlaced scan signal into one frame of an interlaced scan signal so that an odd-number line of an image plane of the non-interlaced scan signal correspond to a line in an odd-number field of the interlaced scan signal and that an even-number line of an image plane of the non-interlaced scan signal correspond to a line in an even-number field of the interlaced scan signal. In another aspect of the present invention, a video signal recording and reproduction apparatus includes first signal conversion means for receiving a first video signal in which at least a luminance signal is a non-interlaced scan signal and converting the non-interlaced scan signal into an interlaced scan signal to generate a second video signal; recording means for recording the second video signal to a recording medium; reproduction means for reproducing the second video signal from the recording medium; and second signal conversion means for performing conversion of the second video signal in an inverse manner to the conversion performed by the first signal conversion means to generate the first video signal. The first signal conversion means converts every two adjacent image planes of the non-interlaced scan signal into two frames of an interlaced scan signal so that an odd-number line and an even-number line of a first image plane of the non-interlaced scan signal correspond to a line in an odd-number field of a first frame and a line in an odd-number field of a second frame of the interlaced scan signal and that an odd-number line and an even-number line of a second image plane of the non-interlaced scan signal correspond to a line in an even-number field of the first frame and a line in an even-number field of the second frame of the interlaced scan signal. In another aspect of the present invention, a video signal recording and reproduction apparatus includes first signal conversion means for receiving a first video signal in which at least a luminance signal is a non-interlaced scan signal and converting the non-interlaced scan signal into an interlaced scan signal to generate a second video signal; recording means for recording the second video signal to a recording medium; reproduction means for reproducing the second video signal from the recording medium; and second signal conversion means for performing conversion of the second video signal in an inverse manner to the conversion performed by the first signal conversion means to generate the first video signal. The first signal conversion means converts every two adjacent image planes of the non-interlaced scan signal into two frames of an interlaced scan signal so that an odd-number line and an even-number line of the first image plane of the non-interlaced scan signal correspond to a line in an odd-number field of an "n"th frame and a line in an even-number field of an "n-1"th frame of the interlaced scan signal and that an odd-number line and an even-number line of a second image plane of the non-interlaced scan signal correspond to a line in an odd-number field of an "n+1"th frame and a line in an even-number field of the "n"th frame of the interlaced scan signal. In another aspect of the present invention, a video signal recording and reproduction apparatus includes first signal conversion means for receiving a first video signal in which at least a luminance signal is a non-interlaced scan signal and converting the non-interlaced scan signal into an interlaced scan signal to generate a second video signal; recording means for recording the second video signal to a recording medium; reproduction means for reproducing the second video signal from the recording medium; and second signal conversion means for performing conversion of the second video signal in an inverse manner to the conversion performed by the first signal conversion means to generate the first video signal. The first signal conversion means converts every two adjacent image planes of the non-interlaced scan signal into two frames of an interlaced scan signal so that an odd-number line and an even-number line of an "n"th image plane correspond to a line in an odd-number field of an "n"th frame and a line in an even-number field of the "n+1"th frame and that an odd-number line and an even-number line of the "n+1"th image plane correspond to a line in an even-number field of the "n+1"th frame and a line in an even-number field of the "n"th frame where n is an integer. In one embodiment of the invention, the first conversion means divides each of a plurality of frames of the second video signal which is an interlaced scan signal into two interlaced scan signals, and the recording means performs pre-processing of the two interlaced scan signals in two channels in parallel. In another aspect of the present invention, a video signal recording and reproduction apparatus includes first signal conversion means for receiving a first video signal in which a luminance signal is a non-interlaced scan signal and a color difference signal is an interlaced scan signal, and converting the non-interlaced scan signal into an interlaced scan signal to generate a second video signal; recording means for recording the second video signal to a recording medium; and reproduction means for reproducing the second video signal from the recording medium; second signal conversion means for performing conversion of the second video signal in an inverse manner to the conversion performed by the first signal conversion means to generate the first video signal. The recording means includes additional information recording means for recording additional information for identifying a field of the color difference signal in a frame of the first video signal. The first signal conversion means divides the color difference signal Which is an interlaced scan signal into odd-number pixels and even-number pixels to generate a color difference signal corresponding to two fields of the second video signal. In another aspect of the present invention, a video signal coding device performs quantization and coding of one of input image data and data which is obtained by converting the input image data in a prescribed manner while performing control so that a plurality of prescribed image areas each obtain a prescribed code amount to generate coded data. Processing is performed which is equivalent to high-rate coding of image data provided in the number of N each having the same size as image data in the prescribed image area in which the code amount is controlled and also having a substantially equal amount of information of the image data to be transmitted to generate N sets of coded data, and the N sets of coded data are output as coded data obtained from the input image data, where N is a constant. In another aspect of the present invention, a video signal coding device performs quantization and coding of one of input image data and data which is obtained by converting the input image data in a prescribed manner while performing control so that a plurality of prescribed image areas each obtain a prescribed code amount to generate coded data. Processing is performed which is equivalent to high-rate coding of image data in the number of N each having the same size as image data in the prescribed image area in which the code amount is controlled and also having a substantially equal amount of information of the image data to be transmitted in a partially overlapped state to generate N sets of coded data, and the N sets obtained from coded data are output as coded data of the input image data, where N is a constant. In another aspect of the present invention, in a video signal transmission apparatus, a plurality of prescribed image areas of image data having a prescribed size are each divided into image data provided in the number of N each having a substantially equal amount of information in a partially overlapped state, processing which is equivalent to code amount control and high-rate coding is performed for each prescribed image area to generate coded data, the coded data is decoded for each prescribed image area to generate N sets of image data, the N sets of image data are processed with high-rate decoding to generate the image data in the number of N, and the image data in the number of N are synthesized to generate image data to reproduce the input image data. Information corresponding to coded data which is lost by an error caused during transmission is reproduced using different information having at least a part of the coded data, where N is a constant. In another aspect of the present invention, in a video signal transmission apparatus, a plurality of prescribed image areas of image data having a prescribed size are each divided into image data provided in the number of N each having a substantially equal amount of information in one of a partially overlapped state and a state without overlapping, processing which is equivalent to code amount control and high-rate coding is performed for each prescribed image area to generate coded data, the coded data is decoded for each prescribed image area to generate N sets of image data, the N sets of image data are processed with high-rate decoding to generate the image data in the number of N, and the image data in the number of N are synthesized to generate image data to reproduce the input image data, where N is a constant. In another aspect of the present invention, a video signal coding device controls a code amount of an input image A having a prescribed size to perform high-rate coding of an image B having a size approximately N times the prescribed size. Information corresponding to a prescribed number of coding units of the input image B is substantially divided equally substantially into images A in the number of N, processing which is equivalent to high-rate coding of each of images in the number of N is performed to generate N sets of coded data, and the coded data is output as coded data for the image data B, where N is a constant. In another aspect of the present invention, a video signal transmission apparatus performs high-rate coding of an image B having pixels approximately N times larger than an image A having a prescribed size to obtain coded data and transmitting the coded data, information of the image B to be transmitted is substantially divided equally into a prescribed number of coding units. Processing which is equivalent to high-rate coding of each of the images in the number of N is performed to generate N sets of coded data, and the N sets of coded data are transmitted by an substantially equal format as for coded data of the images in the number of N having the same size as the image A, where N is a constant. In another aspect of the present invention, a video signal recording apparatus for recording an HD signal in a magnetic tape in the state where the data of the HD signal is compressed, the video signal recording apparatus includes deciding means for deciding the type of the HD signal among a first signal corresponding to 1080 frame effective lines, 1125 total frame lines, and a field frequency of 60 Hz, a second signal corresponding to 1035 frame effective lines, 1125 total frame lines, and a field frequency of 60 Hz, a third signal corresponding to 960 frame effective lines, 1050 total frame lines, and a field frequency of 60 Hz, and a fourth signal corresponding to 1152 frame effective lines, 1250 total frame lines, and a field frequency of 50 Hz; sampling means for sampling the input signal regardless of the type of the input signal; line conversion means for, when the input signal is decided to be the first signal, converting the number of lines only in a top area and a bottom area among frame effective lines of the input signal to an equal number with the number of frame transmission lines of the second signal; shuffling means for regarding the frame transmission lines of the first signal obtained as a result of the line conversion to be the same as a frame transmission area of the second signal, and rearranging pixels in frame transmission areas of the second, third and fourth signals block by block; compression means for compressing the output from the shuffling means so that data of a certain number blocks is a constant data amount; and recording means for recording the output from the shuffling means by adjusting a cylinder rotation speed and a magnetic tape transportation speed to be equal with respect to the four types of HD signals. In another aspect of the present invention, a video signal recording apparatus for recording an HD signal in a magnetic tape in the state where the data of the HD signal is compressed includes deciding means for deciding the type of the HD signal among a first signal corresponding to 1080 frame effective lines, 1125 total frame lines, and a field frequency of 60 Hz, a second signal corresponding to 1035 frame effective lines, 1125 total frame lines, and a field frequency of 60 Hz, a third signal corresponding to 960 frame effective lines, 1050 total frame lines, and a field frequency of 60 Hz, and a fourth signal corresponding to 1152 frame effective lines, 1250 total frame lines, and a field frequency of 50 Hz; sampling means for sampling the input signal regardless of the type of the input signal; signal conversion means for, when the input signal is decided to be the first signal, adding an ineffective pixel to a frame transmission area of the first signal so as to provide the first signal with pixels of the same number as in the frame transmission area of the fourth signal; shuffling means for regarding the frame transmission lines of the first signal obtained as a result of the line conversion to be the same as a frame transmission area of the second signal, and rearranging pixels in frame transmission areas of the second, third and fourth signals block by block; compression means for compressing the output from the shuffling means so that data of a certain number blocks is a constant data amount; and recording means for recording the output from the shuffling means by adjusting a cylinder rotation speed and a magnetic tape transportation speed of the first signal to 6/5 of those for the second, third and fourth signals. In another aspect of the present invention, a video signal recording apparatus for recording an HD signal in a magnetic tape in the state where the data of the HD signal is compressed includes deciding means for deciding the type of the HD signal among a first signal corresponding to 1080 frame effective lines, 1125 total frame lines, and a field frequency of 60 Hz, a second signal corresponding to 1035 frame effective lines, 1125 total frame lines, and a field frequency of 60 Hz, a third signal corresponding to 960 frame effective lines, 1050 total frame lines, and a field frequency of 60 Hz, and a fourth signal corresponding to 1152 frame effective lines, 1250 total frame lines, and a field frequency of 50 Hz; sampling means for sampling the input signal a constant frequency when the input signal is one of the second, third and fourth signals and for sampling the first signal to equalize the number of pixel in a frame transmission area with that of the third signal; shuffling means for rearranging the pixels in frame transmission areas of the first, second, third and fourth signals block by block in accordance with the decision information; compression means for compressing the output from the shuffling means so that data of a certain number blocks is a constant data amount; and recording means for recording the output from the shuffling means by adjusting a cylinder rotation speed and a magnetic tape transportation speed to be equal with respect to the four types of HD signals. In one embodiment of the invention, the sampling means samples the input signal at a constant frequency of 40.5 Mhz for a luminance signal and converts the number of pixels in the horizontal direction of the first signal to be equal to the frame transmission lines of the third signal. In one embodiment of the invention, the sampling means samples the second, third and fourth signals at a constant frequency of 40.5 MHz for a luminance signal and samples the first signal at a frequency of 37,125 MHz for a luminance signal. Thus, the invention described herein makes possible the advantages of (1) providing a video signal recording apparatus for recording a progressive scan signal in the state of being processed with high-rate coding to be highly compatible with a conventional apparatus produced for recording an interlaced scan standard-definition TV signal, (2) providing a video signal recording apparatus for recording a progressive scan signal in the state of being processed with high-rate coding, utilizing a conventional apparatus produced for recording an interlaced scan high-definition TV signal, (3) providing a video signal recording apparatus for recording a progressive scan signal in the state of being processed with high-rate coding to be highly compatible with a conventional apparatus produced for recording an interlaced scan high-definition TV signal, (4) providing a video signal recording apparatus for recording both a progressive scan signal and an interlaced scan signal in the state of being processed with high-rate coding, (5) providing a video signal recording apparatus for performing rate conversion accompanying A/D conversion of a progressive scan signal which is performed at the sampling frequency as the sampling frequency of an interlaced scan high-definition TV signal, (6) providing a video signal recording apparatus for improving image quality for the search picture mode by rearranging coded block obtained from a progressive scan TV signal, (7) providing a video signal recording apparatus for vertically compressing a color difference signal of a progressive scan signal to 1/3 so as to have the same number of pixels as a color difference signal of a 4:2:2 signal and so as to provide arrangement of coding units in a track with respect to the image plane corresponding to the progressive scan signal with high compatibility with an interlaced scan TV signal, (8) providing a video signal recording apparatus for rearranging two successive frames of a progressive scan signal so as to appear to be obtained by interlaced scanning, thus to enable intra-frame correction, (9) providing a video signal recording apparatus for performing coding of two successive frames of a progressive scan signal in combination to improve image quality, (10) providing a video signal recording apparatus for realizing coding of two successive frames of a progressive scan signal in combination using a plurality of channels, (11) providing a video signal recording apparatus for adding a memory to improve image quality for the search picture mode, (12) providing a video signal recording apparatus for increasing the number of effective pixels of a color difference signal to record data at a high rate using a conventional IC, (13) providing a video signal recording apparatus for adding a memory to improve the quality of an image obtained in the search picture mode from an image recorded at a high rate, (14) providing a video signal recording and reproduction apparatus for converting one frame of a non-interlaced scan signal into an interlaced scan signal to record and reproduce a non-interlaced scan signal in addition to an interlaced scan signal, (15) providing a video signal recording apparatus for converting two frames of a non-interlaced scan signal to record and reproduce a non-interlaced scan signal in addition to an interlaced scan signal, (16) providing a video signal recording and reproduction apparatus for converting a non-interlaced scan signal into a different type of interlaced scan signal to record and reproduce a non-interlaced scan signal in addition to an interlaced scan signal, (17) providing a video signal recording and reproduction apparatus for converting a non-interlaced scan signal into a still different type of interlaced scan signal to record and reproduce a non-interlaced scan signal in addition to an interlaced scan signal, (18) providing a video signal recording apparatus for converting a signal having an interlaced scan luminance signal and interlaced scan color difference signals into an interlaced scan signal to record and reproduce a non-interlaced scan signal in addition to an interlaced scan signal, (19) providing a video signal coding device for substantially dividing an input image equally into a plurality of image data, (20) providing a video signal coding device for substantially dividing an input image equally into a plurality of image data and locating image information in the plurality of image data in a partially overlapped state, (21) providing a video signal coding device for preventing data drop caused by an error during transmission using the overlapped part of the image data, (22) providing a video signal transmission apparatus having different specifications by utilizing a conventional high-rate coding device and a conventional data transmission device without any significant alteration, (23) providing a high-rate coding device for performing high-rate coding of an input image having different specifications from an image for which the high-rate coding device is intended by dividing information in the input image substantially equally into a plurality of image data to convert the input image so that the input image has the specifications suitable for the high-rate coding device, (24) providing a high-rate coding device for performing high-rate coding of an input image having different specifications from an image for which the high-rate coding device is intended by substantially dividing information in the input image equally into a plurality of image data to convert the input image so that the input image has the specifications suitable for the high-rate coding device and transmitting such image data, (25) providing a video signal recording and reproduction apparatus for performing data compression and recording in the state where the resolution in an area which is least influenced in terms of visual characteristic and an over-scan area on a TV monitor in accordance with the type of the input signal which is determined by the deciding device is reduced, (26) providing a video signal recording apparatus for adding an effective pixel to perform signal conversion for data compression and recording the data in a magnetic tape while the recording speed is increased to 6/5, so as to record data corresponding to all the pixels in an effective area of an HD signal on the magnetic tape, and (27) providing a video signal recording apparatus for reducing data amount by changing the sampling frequency to perform compression and recording. These and other advantages of the present invention will become apparent to those skilled in the art upon reading and understanding the following detailed description with reference to the accompanying figures. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a video signal recording apparatus in a first example according to the present invention; FIG. 2 is a block diagram of a video signal recording apparatus in a second example according to the present invention; FIG. 3A is a view illustrating a conversion method for a luminance signal in the second example; FIG. 3B is a view illustrating a conversion method for a color difference signal in the second example; FIG. 4 is a block diagram of a video signal recording apparatus in a third example according to the present invention; FIG. 5 is a block diagram of a video signal recording apparatus in a fourth example according to the present invention; FIG. 6 is a block diagram of a video signal recording apparatus in a fifth example according to the present invention; FIG. 7 is a view illustrating a rate conversion method in the fifth example; FIG. 8 is a block diagram of a video signal recording apparatus in a sixth example according to the present invention; FIG. 9 is a view illustrating a recording pattern on a track; FIG. 10 is a view illustrating another recording pattern on a track; FIG. 11 is a block diagram of a video signal recording apparatus in a seventh example according to the present invention; FIG. 12 is a block diagram of a video signal recording apparatus in an eighth example according to the present invention; FIG. 13 is a view illustrating conversion to of a progressive scan signal into a signal which appears to be obtained by interlaced scanning in the eighth example; FIG. 14 is a block diagram of a video signal recording apparatus in a ninth example according to the present invention; FIG. 15A is a view illustrating a conventional method for combining data; FIG. 15B is a view illustrating a method for combining data in the ninth example; FIG. 16 is a block diagram of a video signal recording apparatus in a tenth example according to the present invention; FIG. 17 is a block diagram of a video signal recording apparatus in an eleventh example according to the present invention; FIG. 18A is a view illustrating data recorded on a track in a conventional video signal recording and reproduction apparatus; FIG. 18B is a view illustrating data recorded on a track in the eleventh example; FIG. 19 is a block diagram of a video signal recording apparatus in a twelfth example according to the present invention; FIG. 20 is a block diagram of a video signal recording apparatus in a thirteenth example according to the present invention; FIG. 21 is a view illustrating a method for converting a video signal in the fourteenth example; FIG. 22 is a block diagram of a video signal recording and reproduction apparatus in the fourteenth example according to the present invention; FIG. 23 is a view illustrating a method for converting a video signal in the fifteenth example; FIG. 24 is a view illustrating a method for converting a video signal in the sixteenth example; FIG. 25 is a view illustrating a method for converting a video signal in a seventeenth example according to the present invention; FIG. 26 is a block diagram of a video signal recording and reproduction apparatus in an eighteenth example according to the present invention; FIG. 27A is circuit diagram of a pre-processing device in the video signal recording and reproduction apparatus in an eighteenth example; FIG. 27B is circuit diagram of a post-processing device in the video signal recording and reproduction apparatus in the eighteenth example; FIG. 28 is a view illustrating operation of the pre-processing device and the post-processing device in the eighteenth example; FIG. 29A is a view illustrating operation of an pre-processing device in a nineteenth example; FIG. 29B is a view illustrating operation of an post-processing device in the nineteenth example; FIG. 30A is a circuit diagram of an pre-processing device in a twentieth example; FIG. 30B is a circuit diagram of an post-processing device in the twentieth example; FIG. 31 is a block diagram of a video signal recording and reproduction apparatus in a twenty-first example according to the present invention; FIG. 32A is a circuit diagram of an pre-processing device in a twenty-first example; FIG. 32B is a circuit diagram of an post-processing device in the twenty-first example; FIG. 33 is a block diagram of a video signal recording and reproduction apparatus in a twenty-second example according to the present invention; FIG. 34A is a circuit diagram of an pre-processing device in the twenty-second example; FIG. 34B is a circuit diagram of an post-processing device in the twenty-second example; FIG. 35A is a view illustrating pre-processing operation in the twenty-second example; FIG. 35B is a view illustrating post-processing operation in the twenty-second example; FIG. 36 is a block diagram of a video signal recording and reproduction apparatus in the twenty-third example according to the present invention; FIG. 37 is a view illustrating pre-processing operation and post-processing operation in the twenty-third example; FIG. 38 is a block diagram of a video signal recording and reproduction apparatus in a twenty-fourth example according to the present invention; FIG. 39A is a view illustrating a frame transmission area of an HD signal B in twenty-fifth, twenty-sixth and twenty-seventh examples; FIG. 39B is a view illustrating a frame transmission area of an HD signal C in twenty-fifth, twenty-sixth and twenty-seventh examples; FIG. 39C is a view illustrating a frame transmission area of an HD signal D in the twenty-fifth, twenty-sixth and twenty-seventh examples; FIG. 40A and FIG. 40B are views illustrating arrangement of macroblocks of data written in a memory in the twenty-fifth, twenty-sixth and twenty-seventh examples; FIG. 41A and FIG. 41B are views illustrating a frame effective area in the twenty-fifth, twenty-sixth and twenty-seventh examples; FIG. 42 is a block diagram of a video signal recording and reproduction apparatus in the twenty-sixth example according to the present invention; FIG. 43 is a block diagram of a video signal recording and reproduction apparatus in the twenty-seventh example according to the present invention; FIG. 44A is a block diagram of a sampling device of the video signal recording and reproduction apparatus in the twenty-sixth example; FIG. 44B is a block diagram of a sampling device of the video signal recording and reproduction apparatus in the twenty-seventh example; and FIG. 45 is a view illustrating a frame effective area in the twenty-seventh example. DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described by way of illustrative examples with reference to the accompanying drawings. EXAMPLE 1 A first example according to the present invention will be described with reference to FIG. 1. FIG. 1 is a block diagram of a video signal recording apparatus 100 in the first example. The video signal recording apparatus 100 includes an input terminal 101 to which a progressive scan TV signal is input, a switching device 102 for switching the input signal, frame by frame, and two interlaced scan standard-definition TV signal recording devices 106a and 106b. The two interlaced scan standard-definition TV signal recording devices 106a and 106b each include a dividing device 103 for dividing the input signal into a plurality of coding units, a high-rate coding device 104 for performing high-rate coding of each coding unit, and a recording device 105 for recording the data obtained by the high-rate coding. The video signal recording apparatus 100 having the above-described configuration operates in the following manner. A digital progressive scan TV signal is input to the input terminal 101, and is switched frame by frame to be sent to the interlaced scan standard-definition TV signal recording devices 106a and 106b alternately by the switching device 102. The interlaced scan standard-definition TV signal recording devices 106a and 106b each operate as follows: Each frame of the digital progressive scan TV signal is divided into a plurality of coding units by the dividing device 103, and high-rate coding of each coding unit is performed by the high-rate coding device 104. Then, the resultant data is recorded in a track formed on a magnetic tape by the recording device 105. The interlaced scan standard-definition TV signal recording devices 106a and 106b record the data corresponding to one frame of the progressive scan TV signal in the-same manner as the conventional video signal recording apparatus records data corresponding to one frame of an interlaced scan standard-definition TV signal. In the first example according to the present invention, the switching device 102 is provided for sending frames of the input signal to the two interlaced scan standard-definition TV signal recording devices 106a and 106b alternately. Due to such switching, data corresponding to one frame of a progressive scan TV signal can be coded and recorded as the same quantity of data corresponding to one frame of an interlaced scan TV signal. Although the progressive scan TV signal is divided into a plurality of coding units by the same method as an interlaced scan standard-definition TV signal is divided in the first example, a method used for dividing an interlaced scan high-definition TV signal is also usable. One exemplary progressive scan TV signal which is input to the video signal recording apparatus 100 is obtained by performing rate conversion of a high-definition TV signal conforming to the studio standards by 9/16 for a luminance signal and by 3/8 for a color difference signal. As a result of such rate conversion, the data corresponding to the luminance signal includes 720 (horizontal).times.720 (vertical) pixels, and the data corresponding to the color difference signal includes 240 (horizontal).times.720 (vertical) pixels. Another exemplary progressive scan TV signal is obtained by progressively scanning a standard-definition TV signal defined as a 4:2:2 signal. Other progressive scan TV signals are also usable. In the case where a DCT (discrete cosine transform) coding is used for the high-rate coding in the first example, intra-frame coding is preferably performed, instead of utilizing inter-field correlation which is used for coding an interlaced scan TV signal. By performing intra-frame coding, the image quality is improved. EXAMPLE 2 A second example according to the present invention will be described with reference to FIGS. 2, 3A and 3B. FIG. 2 is a block diagram of a video signal recording apparatus 200 in the second example. The video signal recording apparatus 200 includes an input terminal 201 to which a progressive scan TV signal is input, a rearranging device 202 for rearranging pixels corresponding to the input signal, a framing device 203 for framing data corresponding to two fields input thereto, and an interlaced scan high-definition TV signal recording device 207. The interlaced scan high-definition TV signal recording device 207 includes a dividing device 204 for dividing the framed data into a plurality of coding units, a high-rate coding device 205 for performing high-rate coding of each coding unit, and a recording device 206 for recording the data obtained by the high-rate coding. The video signal recording apparatus 200 having the above-described configuration operates in the following manner. A digital progressive scan TV signal is input to the input terminal 201. Pixels corresponding each of a plurality of frames of the input signal are rearranged by the rearranging device 202, for example, as is illustrated in FIGS. 3A and 3B. FIG. 3A shows a pixel arrangement of data corresponding to a luminance signal of the progressive scan TV signal described in the first example and how the pixels are rearranged, and FIG. 3B shows a pixel arrangement of data corresponding to a color difference signal of the progressive scan TV signal described in the first example and how the pixels are rearranged. As is shown in FIG. 3A, 720 (horizontal) .times.720 (vertical) pixels are divided into three areas A, B and C. Area A includes 720 (horizontal).times.480 (vertical) pixels, and areas B and C each include 360 (horizontal).times.240 (vertical) pixels. The pixels in the three areas A, B and C are rearranged to be 1080 (horizontal) .times.480 (vertical) pixels without changing the arrangement in each area. Regarding the color difference signal, as is shown in FIG. 3B, 240 (horizontal).times.720 (vertical) pixels are divided into three areas A, B and C. Area A includes 240 (horizontal).times.480 (vertical) pixels, and areas B and C each include 120 (horizontal).times.240 (vertical) pixels. The pixels in the three areas A, B and C are rearranged to be 360 (horizontal).times.480 (vertical) pixels without changing the arrangement in each area. The pixel arrangement obtained by such conversion is the same as the pixel arrangement of one field of an interlaced scan high-definition TV signal of the 1125/60 system which is to be divided into a plurality of coding units. The resultant data correspond in to two frames of the progressive scan TV signal is converted to have 1080 (horizontal).times.960 (vertical) pixels by the framing device 203 in the same manner as forming data corresponding to one frame from data correspond in to two fields of an interlaced scan TV signal (shown in FIG. 15A, infra). The resultant data is sent to the interlaced scan high-definition TV signal recording device 207 and is processed in the same manner as an interlaced scan high-definition TV signal. In detail, the signal interlaced scan high-definition TV signal recording device 207 operates as follows: The signal sent from the framing device 203 is divided into a plurality of coding units by the dividing device 204, and high-rate coding of each coding unit is performed by the high-rate coding device 205. Then, the resultant data is recorded in a track formed on a magnetic tape by the recording device 206. In the second example according to the present invention, the rearranging device 202 is provided for rearranging data of a progressive scan TV signal into one field of an interlaced scan high-definition TV signal. Thus, a progressive scan TV signal can be recorded by the interlaced scan high-definition TV signal recording device 207. The manner of pixel rearrangement performed by the rearranging device 202 is arbitrary. In the case when the number of pixels corresponding to the input signal is insufficient, provision of dummy data or other types of treatment is usable. In the case where the interlaced scan high-definition TV signal recording device 207 is produced for signals of the 1125/60 system and the dividing device 204 also converts the data corresponding to an input signal including 1008 (horizontal).times.512 (vertical) pixels into data corresponding 1080 (horizontal).times.480 (vertical) pixels, the rearrangement by the rearranging device 202 needs to be performed in consideration of such conversion performed by the dividing device 204. In the second example, the progressive scan TV signal which is input to the video signal recording apparatus 200 is obtained by rate conversion of a signal conforming to the studio standards described in the first example, but other types of progressive scan TV signals are also usable. EXAMPLE 3 A third example according to the present invention will be described with reference to FIG. 4. FIG. 4 is a block diagram of a video signal recording apparatus 400 in the third example. The video signal recording apparatus 400 includes an input terminal 401 to which a progressive scan TV signal is input, a dividing device 402 for dividing the input signal into a plurality of coding units, and an interlaced scan TV signal recording device 405, which is a part of an interlaced scan high-definition TV signal recording device. The interlaced scan TV signal recording device 405 includes a high-rate coding device 403 for performing high-rate coding of each coding unit, and a recording device 404 for recording the data obtained by the high-rate coding. The video signal recording apparatus 400 having the above-described configuration operates in the following manner. A digital progressive scan TV signal is input to the input terminal 401 and divided into a plurality of coding units by the dividing device 402. The dividing device 402 processes, for example, the signal described in the first example as follows: The progressive scan TV signal is vertically filtered by a color difference 1/2 filter (not shown) and then divided into a plurality of DCT blocks, each including 8 (horizontal).times.8 (vertical) pixels. In detail, the data corresponding to the luminance signal having 720 (horizontal).times.720 (vertical) pixels is divided into 90 (horizontal).times.90 (vertical) DCT blocks. The data corresponding to the color difference signal having 240 (horizontal).times.720 (vertical) pixels is first filtered to have 240 (horizontal).times.360 (vertical) pixels and then divided into 30 (horizontal) .times.45 (vertical) DCT blocks. Next, a macroblock is formed of eight DCT blocks: six DCT blocks (3 (horizontal).times.2 (vertical)) of the luminance signal and two DCT blocks of the color difference signal. The six DCT blocks of the luminance signal are located successively on the image plane. The two DCT blocks of the color difference signal are located at the same position on the image plane. Then, one coding unit is formed of five macroblocks which are away from one another in the image plane. In this manner, the data corresponding to one frame of the progressive scan TV signal is divided into 1350 coding units. Thus, the data corresponding to two frames includes 2700 coding units, which is the same as the number of coding units obtained by high-rate coding of the data corresponding to one frame of an interlaced scan high-definition TV signal of the 1125/60 system. The data corresponding to two frames of the progressive scan TV signal to be divided into coding units include the same number of pixels as in the conventional video signal recording apparatus produced for an interlaced scan high-definition TV signal. Accordingly, the memory capacity required for the division of a progressive scan TV signal is the same as required for dividing an interlaced scan high-definition TV signal. Thus, the division of the progressive scan TV signal can be performed easily by simply altering address control of a conventional dividing device of the conventional video signal recording apparatus. The coding units obtained from data corresponding to two frames by such division are output to the interlaced scan TV signal recording device 405. The interlaced scan TV signal recording device 405 processes the coding units in the same manner as data corresponding to one frame of an interlaced scan high-definition TV signal. In detail, high-rate coding of each coding unit is performed by the high-rate coding device 403, and then the resultant data is recorded in a track formed on a magnetic tape by the recording device 404. In the third example according to the present invention, the dividing device 402 is provided for dividing the input signal in a slightly different manner from the conventional dividing method performed by the conventional video signal recording apparatus produced for an interlaced scan high-definition TV signal. Thus, a progressive scan TV signal can be recorded by the interlaced scan TV signal recording device 405, and the video signal recording apparatus 400 has a higher compatibility with the conventional recording apparatus produced for an interlaced scan high-definition TV signal. Although the interlaced scan TV signal recording device 405 in the third example is a part of an interlaced scan high-definition TV signal recording device, an interlaced scan standard-definition TV signal recording device is also usable as in the first example. In such a case, the data obtained by the dividing device 402 is processed using a part of two interlaced scan standard-definition TV signal recording devices. It is also possible to process data corresponding to one frame as one unit. In the case where a part of an interlaced scan standard-definition TV signal recording device is used, only a single such recording device is needed. In the case where a part of an interlaced scan high-definition TV signal recording device is used, such processing is performed by slightly changing the interlaced scan high-definition TV signal recording device, for example, by doubling the cycle of an internal operational clock. In such a case, the memory capacity to be used can be halved. In the third example, the progressive scan TV signal which is input to the video signal recording apparatus 400 is obtained by rate conversion of a signal conforming to the studio standards described in the first example, but other progressive scan TV signals are also usable. The image quality is improved by performing intra-frame coding using DCT for high-rate coding. EXAMPLE 4 A fourth example according to the present invention will be described with reference to FIG. 5. FIG. 5 is a block diagram of a video signal recording apparatus 500 in the fourth example. The video signal recording apparatus 500 includes an input terminal 501 to which a TV signal input, an input deciding device 502 for deciding whether the input TV signal is a progressive scan TV signal or an interlaced scan TV signal, a dividing device 503 for dividing the progressive scan TV signal into a plurality of coding units, a framing device 504 for forming data corresponding to one frame from the data corresponding to two fields input thereto, and an interlaced scan high-definition TV signal recording device 508. The interlaced scan high-definition TV signal recording device 508 includes another dividing device 505 for dividing the interlaced scan TV signal into a plurality of coding units, a high-rate coding device 506 for performing high-rate coding of each coding unit, and a recording device 507 for recording the data obtained by the high-rate coding. The video signal recording apparatus 500 having the above-described configuration operates in the following manner. A TV signal is input to the input terminal 501. The input signal deciding device 502 decides whether the input TV signal is a progressive scan TV signal or an interlaced scan TV signal. If decided to be a progressive scan TV signal, the TV signal is sent to the dividing device 503. If decided to be an interlaced scan TV signal, the TV signal is sent to the framing device 504. The signal which is sent to the dividing device 503 is divided into a plurality of coding units in the same manner as in the third example, and the coding units corresponding to two frames are output to the high-rate coding device 506. The signal which is sent to the framing device 504 is framed by the framing device 504 as is described in the Description of the Related Art, and then divided into a plurality of coding units by the dividing device 505. The coding units are sent to the high-rate coding device 506. The same number of coding units are obtained from the progressive scan TV signal and from the interlaced scan TV signal. The coding units from the progressive scan TV signal and the coding units from the interlaced scan TV signal are both processed by the interlaced scan high-definition TV signal recording device 508. In detail, the coding units are processed with high-rate coding by the high-rate coding device 506 and then recorded in a magnetic tape by the recording device 507. In the fourth example according to the present invention, the input signal deciding device 502 for deciding whether the input signal is a progressive scan TV signal or an interlaced scan TV signal and the dividing device 503 used for a progressive scan TV signal are added to the conventional recording apparatus produced for an interlaced scan high-definition TV signal. Due to such a configuration, both of an interlaced scan TV signal and a progressive scan TV signal can be recorded by one video signal recording apparatus 500. In the fourth example, a progressive scan TV signal and an interlaced scan TV signal are separately divided into coding units. The two different types of signals can be performed by simply altering address control while using the same memory. The video signal recording apparatus can have other configurations. An arbitrary type of the progressive scan TV signal can be input to the video signal recording apparatus 500. EXAMPLE 5 A fifth example according to the present invention will be described with reference to FIGS. 6 and 7. FIG. 6 is a block diagram of a video signal recording apparatus 600 in the fifth example. The video signal recording apparatus 600 includes an input terminal 601 to which a progressive scan TV signal is input, a rate-converting filter 602 for performing rate conversion of the input signal, and an interlaced scan TV signal recording device 606 which is a part of an interlaced scan high-definition TV signal recording device. The interlaced scan TV signal recording device 606 includes a dividing device 603 for dividing the input signal into a plurality of coding units, a high-rate coding device 604 for performing high-rate coding of each coding unit, and a recording device 605 for recording the data obtained by the high-rate coding. The video signal recording apparatus 600 having the above-described configuration operates in the following manner. An analog progressive scan TV signal which is input to the input terminal 601 is converted into a digital signal by the rate-converting filter 602 and output to the dividing device 603. FIG. 7 illustrates how the rate conversion of a luminance signal is performed by the rate-converting filter 602. The data corresponding to the luminance signal of the input signal shown on the left of FIG. 7 is obtained by sampling at a frequency of 75.6 MHz. Such data includes 1,600 pixels (horizontal).times.787.5 lines (vertical). This input signal is a signal for ATV (advanced TV), and the specifications are defined in Grand Alliance HDTV System Specification. The effective pixel area includes 1,280 pixels (horizontal) .times.720 lines (vertical). Such a signal is processed with rate conversion at a sampling frequency of 40. 5.times.1,001 MHz, and as a result, a signal corresponding to an effective pixel area which includes 685 pixels (horizontal) .times.720 lines (vertical) is obtained. In the case of the NTSC system using 59.94 Hz as a vertical synchronization signal, the sampling frequency used for the rate conversion is 40.5 MHz, which is used for other high-definition TV signals. In the case of the studio standards using 60.00 Hz, the sampling frequency for rate conversion is 40.5 MHz.times.60.00/59.94=40.5 MHz.times.1,001. The resultant effective pixel area is changed to have 720 pixels (horizontal), for example, by addition of dummy data. In this manner, a signal corresponding to the same number of pixels as the signal used as the input signal in the third example is obtained. The signal obtained by the rate conversion is processed in the same manner as in the third example. In the fifth example according to the present invention, the rate-converting filter 602 is provided for performing rate conversion accompanying conversion of an analog signal into a digital signal. Since the effective pixel area is changed by the rate conversion, such rate conversion can be performed at the same sampling frequency as an interlaced scan high-definition TV signal. Although the sampling frequency of the input signal is 75.6 MHz in the fifth example, other frequencies are also usable. In the fifth example, the effective pixel area obtained by the rate conversion is changed to have 720 pixels in the horizontal direction from having 685 pixels. The number of pixels of 720 in the horizontal direction can also be obtained by other methods, for example, by adding data to the 685 pixels in the horizontal direction. In the fifth example, a part of an interlaced scan high-definition TV signal recording device is used as in the third example. Instead, a part of an interlaced scan standard-definition TV signal recording device can be used as in the first example. In such a case, the data obtained by the dividing device 603 is processed using a part of two interlaced scan standard-definition TV signal recording devices. EXAMPLE 6 A sixth example according to the present invention will be described with reference to FIGS. 8 through 10. FIG. 8 is a block diagram of a video signal recording apparatus 800 in the sixth example. The video signal recording apparatus 800 includes an input terminal 801 to which a progressive scan TV signal is input, a dividing device 802 for dividing the input signal into a plurality of coding units, a high-rate coding device 803 for performing high-rate coding of each coding unit, a rearranging device 804 for rearranging coding units output from the high-rate coding device 803, and a recording device 805 for recording the rearranged data. The video signal recording apparatus 800 having the above-described configuration operates in the following manner. A progressive scan TV signal which is input to the input terminal 801 is divided into a plurality of coding units by the dividing device 802, and is processed with high-rate coding by the high-rate coding device 803 in the same manner as in the third example. The coding units output from the high-rate coding device 803 is input to the rearranging device 804. For comparison, the processing in the third example will be described again briefly. In the third example, data corresponding to one frame of the progressive scan TV signal is divided into 30 (horizontal).times.45 (vertical) macroblocks. The coding units which are input to the high-rate coding device 403 each include five macroblocks which are away from one another on the image plane. In the sixth example, the rearranging device 804 rearranges the coding units to prescribed positions within ten recording blocks, each of which includes 3 (horizontal).times.45 (vertical) macroblocks as is shown in FIG. 9. The data in such recording blocks are recorded sequentially in respective tracks formed on a magnetic tape by the recording device 805. In the sixth example according to the present invention, the provision of the rearranging device 804 allows the data to be recorded in the magnetic tape in correspondence with the positions thereof on the image plane. Thus, the image quality for a search picture mode can be improved. The macroblocks can be divided horizontally as is shown in FIG. 10. In this manner, the same type of search picture mode as is performed by the conventional recording apparatus produced for an interlaced scan TV signal can be performed. The rearrangement can be performed in other manners. An arbitrary progressive scan TV signal can be input to the video signal recording apparatus 800. EXAMPLE 7 A seventh example according to the present invention will be described with reference to FIG. 11. FIG. 11 is a block diagram of a video signal recording apparatus 1100 in the seventh example. The video signal recording apparatus 1100 includes an input terminal 1101 to which a progressive scan TV signal is input, a color difference 1/3 filter 1102 for vertically filtering a color difference signal of the input signal, a dividing device 1103 for dividing the resultant signal into a plurality of coding units, a high-rate coding device 1104 for performing high-rate coding of each coding unit, and a recording device 1105 for recording the data obtained by the high-rate coding. The video signal recording apparatus 1100 having the above-described configuration operates in the following manner. As an exemplary progressive scan TV signal which is input to the input terminal 1101, a high-definition signal conforming to the studio standards obtained by rate conversion performed by 9/16 both for a luminance signal and a color difference signal is used in the seventh example. As a result of such rate conversion, the data corresponding to the luminance signal includes 720 (horizontal).times.720 (vertical) pixels, and the data corresponding to the color difference signal includes 360 (horizontal).times.720 (vertical) pixels. Such a progressive scan TV signal is vertically filtered by the color difference 1/3 filter 1102. Namely, the data corresponding to the resultant color difference signal includes 360 (horizontal).times.240 (vertical) pixels. The same number of pixels are included in the data corresponding to a signal obtained by vertically filtering a color difference signal of an interlaced scan standard-definition TV signal defined as a 4:2:2 signal to be 1/2 to be recorded by the conventional system. Next, the resultant signal is divided into a plurality of coding units by the dividing device 1103. The dividing device 1103 operates as follows: The input signal is first divided into a plurality of DCT blocks each including 8 (horizontal).times.8 (vertical) pixels. As a result, the data corresponding to the luminance signal includes 90 (horizontal).times.90 (vertical) DCT blocks, and the data corresponding to the color difference signal includes 45 (horizontal).times.30 (vertical) DCT blocks. Next, one macroblock is formed of eight DCT blocks: six DCT blocks (2 (horizontal).times.3 (vertical)) of the luminance signal and two DCT blocks of the color difference signal. The six DCT blocks of the luminance signal are located successively on the image plane. The two DCT blocks of the color difference signal are located at the same position on the image plane. Then, one coding unit is formed of five macroblocks which are away from one another on the image plane. In this manner, data corresponding to one frame of the progressive scan TV signal is divided into 1350 coding units as in the third example. The same number of coding units are obtained by dividing data corresponding to one frame of an interlaced scan TV signal of the 1125/60 system. The resultant coding units are processed in the same manner as in the third example. In the seventh example according to the present invention, due to the color difference 1/3 filter 1102, data corresponding to the color difference signal is vertically filtered to be 1/3 to have the same number of pixels as a color difference signal of an interlaced scan standard-definition TV signal defined as a 4:2:2 signal conforming to the studio standards. Accordingly, rate conversion of a color difference signal is not needed in order to perform rate conversion of a high-definition TV signal into a standard-definition TV signal. Further, since the data corresponding to the filtered color difference signal is divided by the dividing device 1103 to have 45 (horizontal).times.30 (vertical) macroblocks, the distribution of the macroblocks on the image plane becomes closer to the distribution of the macroblocks of an interlaced scan TV signal. Thus, the progressive scan TV signal becomes highly compatible with an interlaced scan TV signal. An arbitrary progressive scan TV signal can be input to the video signal recording apparatus 1100. As is appreciated from the above description, in the seventh example, the video signal recording apparatus 1100 uses a part of an interlaced scan high-definition TV signal recording device as in the third example. Instead, an interlaced scan standard-definition TV signal recording device can be used as in the first example. Processing of data corresponding to one frame as one unit is realized by slightly altering the configuration, for example, by doubling the cycle of an internal operational clock. The image quality is improved by performing intra-frame coding using DCT for high-rate coding. EXAMPLE 8 An eighth example according to the present invention will be described with reference to FIGS. 12 and 13. FIG. 12 is a block diagram of a video signal recording apparatus 1200 in the eighth example. The video signal recording apparatus 1200 includes an input terminal 1201 to which a progressive scan TV signal is input, a color difference 1/2 filter 1202 for vertically filtering a color difference signal of the input signal, a signal converter 1203 for converting two successive frames of the input signal into two frames which appear to be obtained by interlaced scanning, a dividing device 1204 for dividing the resultant signal into a plurality of coding units, a high-rate coding device 1205 for performing high-rate coding of each coding unit, and a recording device 1206 for recording the data obtained by the high-rate coding. The video signal recording apparatus 1200 having the above-described configuration operates in the following manner. A progressive scan TV signal is input to the input terminal 1201. A color difference signal of the input signal is vertically filtered to be 1/2 by the color difference 1/2 filter 1202. The resultant signal is sent to the signal converter 1203. FIG. 13 illustrates the conversion performed by the signal converter 1203. As is shown in FIG. 13, the data corresponding to the two frames of the progressive scan TV signal is scanned and rearranged so as to locate the data from the first frame and the second frame alternately. The resultant signal is processed in the same manner as in the third example. In detail, the signal is divided into a plurality of coding units by the dividing device 1204, high-rate coding of each unit is performed by the high-rate coding device 1205, and the data obtained by the high-rate coding is recorded in a magnetic tape by the recording device 1206. In the eighth example according to the present invention, the signal converter 1203 converts two successive frames of the progressive scan TV signal into two frames which appear to be obtained by interlaced scanning. Due to the signal converter 1203, even if one of two channels of a video head is damaged, signals from the two frames can be reproduced while performing correction within the frame. Accordingly, continuity of a reproduced image in terms of time can be guaranteed. In the eighth example according to the present invention, a progressive high-definition TV signal recording device is used, but a progressive standard-definition TV signal recording device is also usable. An arbitrary progressive scan TV signal can be input to the video signal recording apparatus 1200. In the conventional video signal recording apparatus, the data is framed and divided into coding units separately. Instead, framing and division can be performed simultaneously. In such a case, the configuration of the video signal recording apparatus needs to be altered so as to prevent framing while the data is divided into coding units when one frame of a progressive scan TV signal is input. By providing the recording device 1206 with a function of rearranging the blocks as in the sixth example, the image quality for the search picture mode is improved. In the first through eight examples, other configurations are also usable, and the method for high-rate coding is arbitrary. EXAMPLE 9 A ninth example according to the present invention will be described with reference to FIGS. 14, 15A and 15B. FIG. 14 is a block diagram of a video signal recording apparatus 1400 in the ninth example. The video signal recording apparatus 1400 includes an input terminal 1401 to which a progressive scan TV signal is input, a combining device 1402 for combining data corresponding to two frames of the input signal thus to form combination data, a dividing device 1403 for dividing the combination data into a plurality of coding units, a high-rate coding device 1404 for performing high-rate coding of each coding unit, and a recording device 1405 for recording the data obtained by the high-rate coding in a magnetic tape 1406. The video signal recording apparatus 1400 having the above-described configuration operates in the following manner. A digital progressive scan TV signal is input to the input terminal 1401, and the data corresponding to two frames thereof are combined to form combination data. FIG. 15A shows how the data corresponding to two fields of an interlaced scan signal are combined to form data corresponding to one frame. FIG. 15B shows how the data corresponding to two frames are combined to form combination data. The manner shown in FIG. 15B is the same as the manner shown in FIG. 15A. The data corresponding to two frames are combined to form combination data as is shown in FIG. 15B. The combination data is divided into a prescribed number of coding units by the dividing device 1403, and each coding unit is processed with high-rate coding by the high-rate coding device 1404 to the same quantity of codes as obtained by high-rate coding of one frame of an interlaced scan high-definition TV signals. Then, the resultant data is recorded by the recording device 1405 in the same number of tracks on the magnetic tape 1406 as one frame of an interlaced scan high-definition TV signal. In the ninth example according to the present invention, the provision of the combining device 1402 reduces an area of a DCT block in one frame on the image plane. In the case where the images in two successive frames are different only slightly, the correlation between pixels in each DCT block is stronger than in a conventional DCT block. Thus, coding efficiency is raised. In the case where the images in two successive frames are different significantly, the coding efficiency is lower than in the conventional DCT block. However, the human eye recognizes deterioration in the quality of still images more easily than of moving images. Accordingly, slight quality deterioration in moving images does not generate any serious problem. The dividing device 1403, the high-rate coding device 1404 and the recording device 1405 can be devices which are usually used for an interlaced scan high-definition TV signal. As the combining device 1402, a device for framing an interlaced scan high-definition TV signal can be used for a standard-definition TV signal. Such a device can be easily used by simply altering the method for data input to and data output from the memory. As the progressive scan TV signal to be input to the video signal recording apparatus 1400, a signal including a standard-definition TV signal defined as a 4:2:2 signal conforming to the studio standards and an auxiliary signal of a luminance signal required for progressive scanning is also usable. EXAMPLE 10 A tenth example according to the present invention will be described with reference to FIG. 16. FIG. 16 is a block diagram of a video signal recording apparatus 1600 in the tenth example. The video signal recording apparatus 1600 includes an input terminal 1601 to which a progressive scan TV signal is input, a switching device 1602 for switching halves of the input signal alternately at 1/2 of the frame cycle to be sent to two channels, two combining devices 1603a and 1603b for combining data corresponding to two progressive frames which are located at the same position on the image plane, thus to form combination data, two dividing devices 1604a and 1604b for dividing the combination data into a plurality of coding units, two high-rate coding devices 1605a and 1605b for performing high-rate coding of each coding unit, and two recording devices 1606a and 1606b for recording the data obtained by the high-rate coding in a magnetic tape 1607. The video signal recording apparatus 1600 having the above-described configuration operates in the following manner. A digital progressive scan TV signal is input to the input terminal 1601. The data corresponding to one frame of the input signal is switched half by half to be sent to the combining devices 1603a and 1603b alternately by the switching device 1602 at, for example, 1/2 of the frame cycle. Thus, when the data corresponding to two frames of the input signal is sent to the switching device 1602, the combining devices 1603a and 1603b each receive data corresponding to a half of the first frame and a half of the second frame, namely, data corresponding to one frame. The data from the first frame and the data from the second frame are combined to form combination data by the combining devices 1603a and 1603b. The combination data is divided into a prescribed number of coding units by the dividing devices 1604a and 1604b. Each coding unit is processed with high-rate coding by the high-rate coding devices 1605a and 1605b to the same quantity of codes as obtained by high-rate coding of one frame of an interlaced scan standard-definition TV signal. Then, the resultant data is recorded by the recording devices 1606a and 1606b in a track of the magnetic tape 1607. In the tenth example according to the present invention, the same effects as in the ninth example can be achieved using two channels due to the switching device 1602 and the combining devices 1603a and 1603b. The dividing devices 1604a and 1604b, the high-rate coding devices 1605a and 1605b, and the recording devices 1606a and 1606b can be devices which are usually used for an interlaced scan standard-definition TV signal. As the combining devices 1603a and 1603b, devices for framing an interlaced scan standard-definition TV signal can be used. The switching can be performed at other cycles than 1/2 of the frame cycle. In such a case, the shuffling degree on the image plane is raised to improve the image quality. The number of channels can be increased in proportion to the number at which the input signal is divided. As the progressive scan TV signal to be input to the video signal recording apparatus 1600, a signal including a standard-definition TV signal defined as a 4:2:2 signal conforming to the studio standards and an auxiliary signal of a luminance signal required for progressive scanning is also usable. EXAMPLE 11 An eleventh example according to the present invention will be described with reference to FIGS. 17, 18A and 18B. FIG. 17 is a block diagram of a video signal recording apparatus 1700 in the eleventh example. The video signal recording apparatus 1700 includes an input terminal 1701 to which a progressive scan TV signal is input, a switching device 1702 for switching the input signal frame by frame to be sent to two channels, two dividing devices 1703a and 1703b for dividing the input signal into a plurality of coding units, two high-rate coding devices 1704a and 1704b for performing high-rate coding of each coding unit, two recording devices 1705a and 1705b for recording the data obtained by the high-rate coding in a magnetic tape 1707, and two memories 1706a and 1706b for delaying the signal by 1/2 frame cycle. The video signal recording apparatus 1700 having the above-described configuration operates in the following manner. A digital progressive scan TV signal is input to the input terminal 1701 and is switched frame by frame by the switching device 1702 to be sent to the two dividing devices 1703a and 1703b alternately. Thus, the dividing devices 1703a and 1703b each receive data corresponding to one frame every other frame cycle. The dividing devices 1703a and 1703b each expand the data corresponding to one frame to be twice as long in terms of time and then divide the data into a prescribed number of coding units. Each coding unit is processed with high-rate coding by the high-rate coding devices 1704a and 1704b to the same quantity of codes as obtained by high-rate coding of one frame of an interlaced scan standard-definition TV signal. The recording devices 1705a and 1705b rearrange and output the resultant data to the memories 1706a and 1706b. The recording devices 1705a and 1705b each output the first half of the frame to memories 1706a and 1706b respectively, thereby delaying the first half of the frame by 1/2 frame cycle so as to synchronize the first of the frame and the second half of the frame for simultaneous output to be recorded in the magnetic tape 1707. Accordingly, the data from the same frame is recorded in the magnetic tape 1707. FIG. 18A shows the recording state performed by the conventional video signal recording apparatus, and FIG. 18B shows the recording state performed by the video signal recording apparatus 1700. In the conventional video signal recording apparatus, the data corresponding to the same frame is recorded by the same channel, and thus data from different frames are recorded simultaneously in the magnetic tape. In the video signal recording apparatus 1700, the data corresponding to the same frame is recorded simultaneously by the two channels. In the eleventh example according to the present invention, due to the memories 1706a and 1706b, the data from the same frame can be recorded simultaneously in the magnetic tape 1707. Thus, the quality the image obtained in search picture mode is improved. The memories 1706a and 1706b are provided after the recording devices 1705a and 1705b in the above example. The memories can be provided at any arbitrary position, for example, after the high-rate coding devices or in the recording devices as long as the memories are inserted at corresponding positions in the respective channels. As the progressive scan TV signal to be input to the video signal recording apparatus 1700, a signal including a standard-definition TV signal defined as a 4:2:2 signal conforming to the studio standards and an auxiliary signal of a luminance signal required for progressive scanning is also usable. EXAMPLE 12 A twelfth example according to the present invention will be described with reference to FIG. 19. FIG. 19 is a block diagram of a video signal recording apparatus 1900 in the twelfth example. The video signal recording apparatus 1900 includes an input terminal 1901 to which a progressive scan TV signal is input, a color difference signal forming device 1902 for forming an auxiliary signal of a color difference signal, a signal dividing device 1903 for dividing the color difference signal formed, two dividing devices 1904a and 1904b for dividing the resultant signal into a plurality of coding units, two high-rate coding devices 1905a and 1905b for performing high-rate coding of each coding unit, and two recording devices 1906a and 1906b for recording the data obtained by the high-rate coding in a magnetic tape 1907. The video signal recording apparatus 1900 having the above-described configuration operates in the following manner. A signal including a standard-definition TV signal defined as a 4:2:2 signal conforming to the studio standards and an auxiliary signal of a luminance signal required for progressive scanning is input to the input terminal 1901. Hereinafter, the signal including these two types of signals will be referred to as a "4:2:2:4 signal". A color difference signal of the auxiliary signal is formed by, for example, copying the color difference signal of the 4:2:2 signal by the color difference signal forming device 1902. Thus, the input signal can be converted to a signal including two 4:2:2 signals. Such a signal is divided into, for example, two 4:2:2 signals by the signal dividing device 1903, and two such signals are output to the dividing devices 1904a and 1904b respectively. The dividing devices 1904a and 1904b each divide such a signal into a prescribed number of coding units. Each coding unit is processed with high-rate coding by the high-rate coding devices 1905a and 1905b to the same quantity of codes as obtained by high-rate coding of one frame of an interlaced scan standard-definition TV signal. The recording devices 1906a and 1906b each record the data obtained by the high-rate coding in the same number of tracks in the magnetic tape 1907 as one frame of an interlaced scan high-definition TV signal. In the twelfth example according to the present invention, an auxiliary signal is formed by the color difference signal forming device 1902 and the resultant signal is divided by the signal dividing device 1903. Due to the devices 1902 and 1903, the 4:2:2:4 signal can be recorded at a high rate by the conventional video signal recording apparatus produced for an interlaced scan TV signal. The method for forming a color difference signal by the color difference signal forming device 1902 is arbitrary. The method for dividing the signal by the signal dividing device 1903 is also arbitrary. In the case where a progressive scan TV signal is input to the video signal recording apparatus 1900, the color difference signal forming device 1902 can be eliminated. EXAMPLE 13 A thirteenth example according to the present invention will be described with reference to FIG. 20. FIG. 20 is a block diagram of a video signal recording apparatus 2000 in the thirteenth example. The video signal recording apparatus 2000 includes an input terminal 2001 to which a progressive scan TV signal is input, a color difference signal forming device 2002 for interpolating color difference signals, a signal dividing device 2003 for dividing the input signal, two dividing devices 2004a and 2004b for dividing the resultant signal into a plurality of coding units, two high-rate coding devices 2005a and 2005b for performing high-rate coding of each coding unit, and two recording devices 2006a and 2006b for recording the data obtained by the high-rate coding in a magnetic tape 2008, and memories 2007a and 2007b for delaying a signal by 1/2 frame cycle. The video signal recording apparatus 2000 having the above-described configuration operates in the following manner. A signal including a standard-definition TV signal defined as a 4:2:2 signal conforming to the studio standards and an auxiliary signal of a luminance signal required for progressive scanning is input to the input terminal 2001. Hereinafter, the signal including these two types of signals will be referred to as a "4:2:2:4 signal". Such a signal is processed by the color difference signal forming device 2002, the signal dividing device 2003, the dividing devices 2004a and 2004b, and the high-rate coding devices 2005a and 2005b, and then is input to the recording devices 2006a and 2006b in the same manner as in the twelfth example. The data corresponding to the first half of each frame which is input to the recording devices 2006a and 2006b is sent to the memories 2007a and 2007b. Then, the data corresponding to the second half of each frame which is input to the recording devices 2006a and 2006b is recorded in the magnetic tape 2008. Simultaneously, the data corresponding to the first half of the frame is also recorded in the magnetic tape 2008 from the memories 2007a and 2007b after being delayed by 1/2 frame cycle. Accordingly, the data from the same frame is recorded in the magnetic tape 2008 simultaneously. In the thirteenth example according to the present invention, high-rate recording which is realized in the twelfth example can be realized for search picture mode. The method for forming an interpolation signal for the color difference signals by the color difference signal forming device 2002 is arbitrary. The method for dividing the signal by the signal dividing device 2003 is also arbitrary. In the case where a progressive scan TV signal is input to the video signal recording apparatus 2000, the color difference signal forming device 2002 can be eliminated. The memories 2007a and 2007b are provided after the recording devices 2006a and 2006b in the above example. The memories can be provided at any arbitrary position, for example, after the high-rate coding devices or in the recording devices. EXAMPLE 14 In the fourteenth through seventeenth examples, a 4:2:2:4 signal which is a component-type signal of a second-generation EDTV signal is used as a signal obtained by non-interlaced scanning (hereinafter, referred to as a "non-interlaced scan signal"). It is now under consideration in Japan whether the 4:2:2:4 signal should be standardized. Hereinafter, a 4:2:2:4 signal will also be referred to as an "ED signal". Before the description of the fourteenth example, the ED signal will be explained briefly in relation with an SD signal (the standard-definition TV signal). In an ED signal, a luminance signal is a non-interlaced scan signal (also referred to as a "progressive signal"), and color difference signals are each an interlaced signal. Namely, the color difference signal of the ED signal is the same as a color difference signal of a 4:2:2 signal which is a component-type signal of an SD signal. Originally, these numerical figures represent the ratio of the sampling frequencies for the luminance signal and two color difference signals, and "4" corresponds to 13.5 MHz. A frame J of an interlaced scan signal includes an odd-number field and an even-number field. Where a top line in the effective plane area of frame J is a first line; third, fifth, seven, and other odd-number lines are included in the odd-number field, and second, fourth, sixth and other even-number lines are included in the even-number field. Herein, one plane of a non-interlaced scan signal will be referred to as a "frame P". Since the two color difference signals of an ED signal are interlaced scan signals, there are two types of frames P. A frame P in the case where the color difference signal corresponds to an odd-number field will be referred to as an "odd-number frame P" or "frame P(n)", and a frame P in the case where the color difference signal corresponds to an even-number field will be referred to as an "even-number frame P" or "frame (n+1)". The lines of an odd-number field and the lines of an even-number field of an interlaced scan signal respectively correspond to odd-number lines of an odd-number field and even-number lines of an even-number field. In order to transmit an ED signal digitally, two 4:2:2 signal interfaces (hereinafter, referred to as a "4:2:2 interface") for an SD signal are combined. Among all the lines of a non-interlaced scan signal, only the lines corresponding to an SD signal are transmitted by one 4:2:2 interface, and the remaining lines are transmitted by the other 4:2:2 interface. Although the two interfaces when combined are represented as 4:2:2:4:2:2, a portion of a color difference signal of the second 4:2:2 interface is not necessary. Accordingly, an ED signal is also referred to as a "4:2:2:4 signal". A video signal recording and reproduction apparatus in the fourteenth example is obtained by adding a few circuits to a conventional video signal recording and reproduction apparatus (also referred to as "DVTR") described in the Description of the Related Art in order to record an ED signal (4:2:2:4 signal). The conventional DVTR records an SD signal obtained as a result of sampling at a frequency ratio of 4:1:1 (the sampling frequency ratio for a color difference signal is half of 4:2:2 ) or a frequency ratio of 4:2:0 at 25 Mbps. (Hereinafter, a signal obtained as a result of sampling at a frequency ratio of, for example, 4:1:1 will also be referred to as "a signal of the 4:1:1 type".) The video signal recording and reproduction apparatus in this example utilizes the fact that data corresponding to an ED signal includes a number of pixels (information content) twice the number of pixels corresponding to an SD signal of the 4:1:1 type. By converting an ED signal into an SD signal and compressing the resultant signal in the same manner as in an SD-DVTR, the ED signal can be recorded at the same rate as in an HD-DVTR (50 Mbps). With reference to FIG. 22, a video signal recording and reproduction apparatus 2200 in the fourteenth example will be described. FIG. 22 is a block diagram of a video signal recording and reproduction apparatus 2200. The video signal recording and reproduction apparatus 2200 includes an input terminal 2201 to which an ED signal is input, a converter 2202 for converting the ED signal (a first video signal) into two SD signals SD1 and SD2 of the 4:1:1 type (second video signals), a recording section 2203 for recording the second video signals to a recording medium 2208, a reproduction section 2209 for reproducing the video signal, a reverse converter 2214 for converting the second video signals into the ED signal, and an output terminal 2215 from which the ED signal is sent out. The recording section 2203 includes a compressor 2204 for compressing the SD signal SD1 by high-rate coding (intra-frame coding using DCT) to generate compression data 1, a compressor 2205 for compressing the SD signal SD2 by high-rate coding (intra-frame coding using DCT) to generate compression data 2, a multiplexer 2206 for multiplexing the compression data 1 and 2 data in terms of time to generate multiplex data, and a recording device 2207 for recording the multiplex data to the recording medium 2208 after performing error correction coding and modulation for a transmission path. The reproducing section 2209 includes a reproduction device 2210 for reproducing the signal from the recording medium and performing demodulation and data correction of the signal to obtain the multiplex signal, a de-multiplexer 2211 for obtaining the compression data 1 and 2 from the multiplex signal and two expanding devices 2212 and 2213 respectively for decoding the compression data 1 and 2 to obtain the signal SD1 and SD2. The video signal recording and reproduction apparatus 22000 having the above-described configuration operates in the following manner. For recording, an ED signal which is input to the input terminal 2201 is converted into two signals SD1 and SD2 which appear to be obtained by interlaced scanning. The signals SD1 and SD2 are shown in FIG. 21. The signals SD1 and SD2 are compressed by high-rate coding (intra-frame coding performed using DCT) in the same manner as performed in an SD-DVTR by the compressors 2204 and 2205 to be compression data 1 and 2, respectively. The compression data 1 and 2 are multiplexed by the multiplexer 2206 frame by frame in terms of time into a multiplex signal. The multiplex signal is processed with formatting, coding for error correction and coding for the transmission path in the same manner as in the HD-DVTR and then recorded to the recording medium 2208 by the recording device 2207. For reproduction, the signal is reproduced from the recording medium 2208, and the signal is processed with decoding of the error correction code, decoding of the code for the transmission path, and modification to obtain the multiplex signal by the reproduction device 2210. The multiplex signal is de-multiplexed into compression data 1 and 2 by the de-multiplexer 2211. The compression data 1 and 2 are processed with decoding of the high-rate coding by the expanding devices 2212 and 2213, respectively to be the signals SD1 and SD2. The signals SD1 and SD2 are converted into the ED signal by the reverse converter 2214 and then output from the output terminal 2215. In the fourteenth example according to the present invention, an ED signal is recorded in the form of an SD signal without spoiling the correlation of pixels corresponding to the ED signal. Accordingly, an ED signal can be recorded efficiently by simply adding a few circuits to the conventional SD-DVTR or HD-DVTR. The data compression can be performed efficiently by DCT using 8.times.8 DCT blocks within each frame. Information for distinguishing an odd-number frame P from an even-number frame P is recorded and reproduced as subcode information together with video data and audio data. Thus, an ED signal which is recorded can be reproduced to the original ED signal completely EXAMPLE 15 A video signal recording and reproduction apparatus in a fifteenth example has the same configuration and operates in the same manner as the video signal recording and reproduction apparatus 2200 in the fourteenth example except for the converter 2202 and the reverse converter 2214. Accordingly, the detailed explanation thereof will be omitted, and the signal conversion will be described with reference to FIG. 23. As is shown in FIG. 23, conversion of an ED signal into two signals SD1 and SD2 is performed by converting every two successive planes (frame P(n) and frame P(n+1; n is an odd number) of a non-interlaced scan signal into two frames (frames J(n) and J(n+1); n is an odd number) of an interlaced scan signal. An odd-number line and an even-number line of a frame P(n) correspond to a line in an odd-number field of a frame J(n) and a line in an odd-number field of a frame J(n+1), respectively. An odd-number line and an even-number line of a frame P(n+1) correspond to a line in an even-number field of the frame J(n) and a line in an even-number field of the frame J(n+1), respectively. In the video signal recording and reproduction apparatus in the fifteenth example, the correlation between the line in the odd-number field and the line in even-number field is maintained. Especially, data compression can be performed efficiently by DCT of an 8.times.4.times.2 mode. In this mode, 8(horizontal).times.4 (vertical) pixels are processed with DCT for two image planes. The other effects in the fourteenth example can also be achieved. EXAMPLE 16 A video signal recording and reproduction apparatus in a sixteenth example has the same configuration and operates in the same manner as the video signal recording and reproduction apparatus 2200 in the fourteenth example except for the converter 2202 and the reverse converter 2214. Accordingly, the detailed explanation thereof will be omitted, and the signal conversion will be described with reference to FIG. 24. As is shown in FIG. 24, conversion of an ED signal into two signals SD1 and SD2 is performed by converting every two successive planes (frame P(n) and frame P(n+1); n is an odd number) of a non-interlaced scan signal into three frames (frames J(n-1) to J(n+1); n is an odd number) of an interlaced scan signal. An odd-number line and an even-number line of a frame P(n) correspond to a line in an odd-number field of a frame J(n) and a line in an even-number field of a frame J(n-1), respectively. An odd-number line and an even-number line of a frame P(n+1) correspond to a line in an odd-number field of the frame J(n+1) and a line included in an even-number field of the frame J(n), respectively. The other effects in the fourteenth example can also be achieved. EXAMPLE 17 A video signal recording and reproduction apparatus in a seventeenth example has the same configuration and operates in the same manner as the video signal recording and reproduction apparatus 2200 in the fourteenth example except for the converter 2202 and the reverse converter 2214. Accordingly, the detailed explanation thereof will be omitted, and the signal conversion will be described with reference to FIG. 25. As is shown in FIG. 25, conversion of an ED signal into two signals SD1 and SD2 is performed by converting every two successive planes (frame P(n) and frame P(n+1); n is an odd number) of a non-interlaced scan signal into two frames (frames J(n) and J(n+1); n is an odd number) of an interlaced scan signal. An odd-number line and an even-number line of a frame P(n) correspond to a line in an odd-number field of a frame J(n) and a line included in an even-number field of the a frame J(n+1), respectively. An odd-number line and an even-number line of a frame P(n+1) correspond to a line in an odd-number field of the frame J(n+1) and a line in an odd-number field of the frame J(n), respectively. The other effects in the fourteenth example can also be achieved. EXAMPLE 18 An eighteenth example according to the present invention will be described with reference to FIGS. 26 through 30. FIG. 26 is a block diagram of a video signal recording and reproduction apparatus 2600 in the eighteenth example. In the video signal recording and reproduction apparatus 2600, a main part of a video processing circuit of the conventional apparatus including a compressor for compressing data at a ratio of 1:C is utilized to a maximum possible extent except for the compression ratio. The compression ratio in the video signal recording and |