Carriage servo method and apparatus for determining and...

Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system

Reexamination Certificate

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Reexamination Certificate

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09816234

ABSTRACT:
A carriage servo apparatus according to the present invention comprises: a carriage for supporting a pickup that records or reproduces information relevant to an information recording face; and a carriage motor for moving the carriage in a direction parallel to the information recording face based on a motor drive signal. This carriage servo apparatus further comprises a microcomputer for detecting a minimum value of a motor drive signal required for moving the carriage from its still state, and setting a motor drive signal when recording or reproducing information, based on the detected minimum value.

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patent: 4581567 (1986-04-01), Yanagawa et al.
patent: 4647990 (1987-03-01), Sasamura
patent: RE32574 (1988-01-01), Ceshkovsky et al.
patent: 4727532 (1988-02-01), Giddings
patent: 4924165 (1990-05-01), Kohno
patent: 5402400 (1995-03-01), Hamada et al.
patent: 5699207 (1997-12-01), Supino et al.
patent: H05-242492 (1993-09-01), None
patent: H08-103095 (1996-04-01), None
patent: H09-161423 (1997-06-01), None
patent: H11-025474 (1999-01-01), None

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