Tracking error correction for optical head in different modes of

Details Tracking error correction for optical head in different modes of Tracking error correction for optical head in different modes of

1994-06-09

1996-04-16

Epps, Georgia Y.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 54, 369 4427, 369116, 369 4413, 369124, 3692753, G11B 700

Patent

active

055089917

ABSTRACT:
An offset pulse having a polarity opposite to that of a large tracking error pulse that occurs in response to an operation mode changeover is added to a tracking error signal. The offset pulse has a duration starting immediately before the operation mode changeover and partially overlaps with the tracking error pulse. The offset pulse is generated so as to rise at a timing that is determined based on a wobble signal extracted from the tracking error signal.

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patent: 4866688 (1989-09-01), Ohtake et al.
patent: 5020045 (1991-05-01), Smart et al.
patent: 5034940 (1991-07-01), Saito et al.
patent: 5084860 (1992-01-01), Maeda et al.
patent: 5270998 (1993-12-01), Uchiumi
patent: 5295131 (1994-03-01), Ishibashi et al.
Patent Abstract of Japan, vol. 13, No. 345 (P-909) 3 Aug. 1989 for Japanese Publication No. JP 1-102747.

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