Optical storage apparatus which detects a lens position signal w

Details Optical storage apparatus which detects a lens position signal w Optical storage apparatus which detects a lens position signal w

1997-06-27

1999-02-09

Neyzari, Ali

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 4428, G11B 1722

Patent

active

058703560

ABSTRACT:
When a pull-in to a target track due to a turn-on of a tracking servo unit fails and a seek error is detected, a seek error processing unit turns on, for example, a low speed lens lock control unit and controls a VCM so as to set an optical axial deviation of an objective lens to zero, thereby subsequently allowing a retry seek to be executed. The turn-on of the low speed lens lock control unit by the seek error processing unit is performed for a specified time after the detection of the seek error.

REFERENCES:
patent: 5163033 (1992-11-01), Yanagi
patent: 5289447 (1994-02-01), Kobayashi et al.
patent: 5396477 (1995-03-01), Matsumoto et al.

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