Tracking system for optical disc memory

Details Tracking system for optical disc memory Tracking system for optical disc memory

G - Physics

11

B

352/32.2

G11B 7/095 (2006.01) G11B 7/09 (2006.01) G11B 13/04 (2006.01)

Patent

CA 1284222

ABSTRACT OF THE DISCLOSURE A tracking system for positioning a light spot onto a magneto optic or optical disc having a beam guide track preformatted thereon comprises a main light beam and two auxiliary light beams, and a circuit for feeding a low frequency component of tracking error signals, detected by the respective auxiliary light beams, back to a tracking error signal detected by the main light beam.

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