Optical disc signal reproducing system with tilt immunization

Details Optical disc signal reproducing system with tilt immunization Optical disc signal reproducing system with tilt immunization

G - Physics

11

B

352/32.1

G11B 7/08 (2006.01) G11B 7/013 (2006.01) G11B 7/09 (2006.01) G11B 7/095 (2006.01)

Patent

CA 1199110

OPTICAL DISC SIGNAL REPRODUCING SYSTEM WITH TILT IMMUNIZATION ABSTRACT OF THE DISCLOSURE An optical signal reproducing system uses laser light reflected from a recording disc track 12 to recover signals stored in pits 13 separated by lands. The differential output of the reflected light only when the focused beam is incident on pits is used to control lateral tracking offset correction in a negative feedback mode, thereby immunizing the system from false tracking correction due to light reflected from lands when the disc is tilted from the optical axis.

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