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United States Utility Patents
5,519,680 - 5,519,689

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NumberTitle
5,519,680 Disc recording and reproducing device for improved recording of table of contents information
5,519,681 Recording medium reproducing apparatus that identifies a channel of reproduced data
5,519,682 Method of and apparatus for recording digital data on an optical disk with two optical heads
5,519,683 Information recording/reproducing device and method in which a resynchronization signal is inserted into the data at predetermined intervals
5,519,684 Digital recorder for processing in parallel data stored in multiple tracks
5,519,685 Optical pickup head apparatus capable of suppressing crosstalk from adjacent tracks and in the recording line density direction
5,519,686 Encoder for controlling measurements in the range of a few angstroms
5,519,687 Turntable device for an information disc
5,519,688 Spindle motor mounting structure and disk unit having the same
5,519,689 Traffic control apparatus and method of user-network interface of asynchronous transfer mode



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