Method and apparatus for determining and adjusting an inclinatio

Details Method and apparatus for determining and adjusting an inclinatio Method and apparatus for determining and adjusting an inclinatio

1996-06-13

2000-09-05

Tran, Thang V.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4429, 369 4434, G11B 700

Patent

active

061153346

ABSTRACT:
The invention provides a recording and/or reproduction apparatus for a record medium in the form of a disk by which the necessity for adjustment of an inclination of a head with respect to a disk upon production of the apparatus is eliminated and correct reproduction of data can be assured irrespective of a variation with respect to time. A control circuit controls an offset generation circuit to generate a predetermined offset signal. A skew servo circuit drives a skew motor in response to the offset signal to adjust the relative angle of an optical head with respect to an optical disk to a predetermined angle. A level detection circuit detects the amplitude of the tracking error signal then and outputs it to the control circuit. The control circuit adjusts the offset signal to be outputted from the offset generation circuit so that the amplitude of the tracking error signal may be maximum.

REFERENCES:
patent: 4608680 (1986-08-01), Yano
patent: 5001690 (1991-03-01), Kamiya et al.
patent: 5027336 (1991-06-01), Sugiura
patent: 5302834 (1994-04-01), Murao
patent: 5523989 (1996-06-01), Ishibashi
patent: 5703855 (1997-12-01), Kirino et al.
patent: 5805543 (1998-09-01), Takamine et al.

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