Device for playing optical discs

Details Device for playing optical discs Device for playing optical discs

2003-12-03

2010-02-02

Young, Wayne R (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044290, C369S044320

Reexamination Certificate

active

07656758

ABSTRACT:
A disc drive apparatus (1) for optical discs (2) comprises: a frame (3); a sledge (10) displaceably mounted with respect to said frame (3); a lens actuator (43, 21) displaceably mounted with respect to said sledge (10); and a control unit (90) for generating a control signal (SCL) for the lens actuator (43, 21). The control unit (90) is designed, during a jump operation, to generate said control signal (SCL) for the lens actuator (43, 21) on the basis of an actuator deviation signal (SAS) representing a difference between actuator position (XA) and sledge position (XS).

REFERENCES:
patent: 5157642 (1992-10-01), Tsukamura et al.
patent: 5442604 (1995-08-01), Osada
patent: 5539710 (1996-07-01), Tokushuku et al.
patent: 5872676 (1999-02-01), Smith et al.
patent: 862169 (1998-09-01), None
patent: 938038 (1999-08-01), None
patent: 0938038 (1999-08-01), None
patent: EP0862169 (1998-09-01), None
patent: EP0938038 (1999-08-01), None

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