Method for searching a track at high speed in an optical recordi

Details Method for searching a track at high speed in an optical recordi Method for searching a track at high speed in an optical recordi

1991-03-29

1992-12-29

Envall, Jr., Roy N.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 32, 369 4428, G11B 700

Patent

active

051757168

ABSTRACT:
There is disclosed a method of searching at high speed an information recorded on a compact disk in an optical recording/reproducing apparatus, by means of detecting the numbers of current tracks and tracks of the target position and converting the detected value of the tracks to a value of time corresponding to velocity. In the compact disk system, the number of track required to be move the target position is obtained by detecting the numbers of the current and target tracks. The number of tracks obtained is converted as the value of time, and the sled motor in pick-up tools is driven according to the obtained value of time, and then the break point is settled at the point of 3/4 of the time driven in the sled motor, and finally the target track is detected at high speed after passing over the point of 1/4.

REFERENCES:
patent: 4858214 (1989-08-01), Baba
patent: 4926405 (1990-05-01), Hangai et al.

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