Disc recording/reproducing apparatus which uses stored eccentric

Details Disc recording/reproducing apparatus which uses stored eccentric Disc recording/reproducing apparatus which uses stored eccentric

1994-05-26

1997-04-01

Young, W. R.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4432, 369 4429, 369 58, 360 7704, G11B 7085

Patent

active

056173881

ABSTRACT:
A disc recording/reproducing apparatus includes a tracking servo system in which a recording/reproducing head is moved based upon a target position signal indicating its pre-set target position on a disc-shaped recording medium and in which the recording/reproducing head is controlled in its position by a driving unit which employs an output of a controller which is supplied with a position signal obtained by subtracting a deviation from a pre-set target position from the target position signal. The apparatus also includes an eccentricity data storage unit for storing eccentricity data indicating the tracking position of the recording/reproducing head which depends upon eccentricity of the disc-shaped recording medium. The eccentricity data from the eccentricity data storage unit is summed to the target position signal for controlling the position of the recording/reproducing head. In this manner, the current consumption when the recording/reproducing head is halted under a standby state on a pre-set track may be reduced.

REFERENCES:
patent: 4135217 (1979-01-01), Jaques et al.
patent: 4136365 (1979-01-01), Chick et al.
patent: 4149199 (1979-04-01), Chick et al.
patent: 4396959 (1983-08-01), Harrison et al.
patent: 4488187 (1984-12-01), Alaimo
patent: 4498129 (1985-02-01), Velasquez
patent: 5027336 (1991-06-01), Sugiura
patent: 5163035 (1992-11-01), Horikiri
patent: 5241433 (1993-08-01), Anderson et al.
patent: 5369345 (1994-11-01), Phan et al.

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