Method and apparatus for recording and reproducing information

Details Method and apparatus for recording and reproducing information Method and apparatus for recording and reproducing information

G - Physics

11

B

352/32.2

G11B 7/09 (2006.01) G11B 7/0033 (2006.01) G11B 7/13 (2006.01) G11B 7/14 (2006.01)

Patent

CA 1324667

ABSTRACT OF THE DISCLOSURE A method and an apparatus for recording and reproducing information comprising irradiating a light spot for recording and reproducing information and a plurality of light spots for tracking an information- recording region of an optical information-recording medium including tracks or guiding, projecting reflected beams from the optical information-recording medium due to said light spot for recording and reproducing information and plurality of light spots for tracking on a photosensor, and selecting two outputs from a plurality of electrical outputs for tracking from said photosensor to provide tracking-control signals.

580976

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