Method and apparatus for tracking servo system

Details Method and apparatus for tracking servo system Method and apparatus for tracking servo system

1986-06-05

1988-06-14

McElheny, Jr., Donald

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

G11B 7095

Patent

active

047516950

ABSTRACT:
A tracking servo system using an optical disc with guide grooves formed thereon for a plurality of tracks each having a plurality of interrupting portions, wherein a tracking signal is detected from the diffracted light of a beam spot irradiated to the optical disc and reflected from the guide groove, then the tracking signal is corrected by a signal component included therein and obtained from the interrupting portions, and the track is traced by the use of such corrected signal and the tracking signal.

REFERENCES:
patent: 4467462 (1984-08-01), Shibata
patent: 4502134 (1985-02-01), Kondo et al.
patent: 4544838 (1985-10-01), Musha et al.
patent: 4564929 (1986-01-01), Yonezawa et al.
patent: 4589103 (1986-05-01), Tajima
patent: 4593386 (1986-06-01), Kuwabara et al.
patent: 4616354 (1986-10-01), Yoshida
Bolthuis et al., "Ten Billion Bits on a Disk", IEEE Spectrum, vol. 16, No. 8, Aug. 1979, pp. 26-33.

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