Optical disk recording/reproducing device

Details Optical disk recording/reproducing device Optical disk recording/reproducing device

2007-04-17

2007-04-17

Neyzari, Ali (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044340, C369S013020

Reexamination Certificate

active

10487981

ABSTRACT:
A moved distance detecting means (15) detects the moved distance in a tracking direction of an object lens, a position signal generating means (60) generates a position signal corresponding to the position of the object lens based on the detection, and a drive signal modulating means (40) modulates the drive current of a magnetic head (20) according to this position signal. Therefore, a drive current can be controlled according to the moved distance of the object lens to enable the magnetic head to be driven with a small current when a moved distance is small and with a large current according to a moved distance only when it is large, whereby it is possible to reduce an average drive current and hence reduce power consumption as a whole.

REFERENCES:
patent: 6469960 (2002-10-01), Miyoshi
patent: 6778473 (2004-08-01), Tomita et al.
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patent: 3-150742 (1991-06-01), None
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patent: 6-20329 (1994-01-01), None
patent: 2002-319205 (2002-10-01), None
patent: 2002-373460 (2002-12-01), None

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