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United States Utility Patents
6,167,010 - 6,167,019

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NumberTitle
6,167,010 Disk reproduction apparatus and tracking servo circuit
6,167,011 Processing of disc-drive pickup signals
6,167,012 Information carrier, reading/writing device and reading device for writing and/or reading information blocks
6,167,013 Information storage medium and information reproducing apparatus
6,167,014 Disc loading device for loading a cartridge containing therein a disc or a disc cartridge
6,167,015 Apparatus for loading discs of different sizes
6,167,016 Optical head with a diffractive lens for focusing a laser beam
6,167,017 Optical head assembly having means for detecting tracking errors based on astigmatisms generated by returning beams
6,167,018 Optical information storage apparatus having cylindrical lens for eliminating astigmatism generated by polarization beam splitter and newly generating astigmatism
6,167,019 Optical Disc cd recording/reproducing apparatus recording/reproducing information to/from optical discs according to different standards



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