Method for recording/reproducing status information on/from an o

Details Method for recording/reproducing status information on/from an o Method for recording/reproducing status information on/from an o

1996-06-28

1998-04-07

Tran, Thang V.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 58, 369 94, G11B 700

Patent

active

057372870

ABSTRACT:
A method for deciding recording density of an optical disc easily decides and searches the kind and data recording status of a disc when reproducing a general CD and a high density CD. The method is performed by a recording step of recording classification of the general disc and the high density disc, and identification and recording density status of respective layers of the high density CD onto both a zero area of a lead-in region and a zero area of a Q channel of a subcode, and a reproducing step in which the zero area of the lead-in region is read out to decide the recording density status and positional information with respect to respective musics, and the linear velocity of the spindle motor, tracking servo and focusing servo are controlled with respect to the decided respective musics. Thus, it is easy to search the music while accurately controlling the spindle motor, focusing servo and tracking servo according to the recording density.

REFERENCES:
patent: 4928192 (1990-05-01), Bartlett et al.
patent: 5281797 (1994-01-01), Tatsuno et al.
patent: 5416757 (1995-05-01), Luecke et al.
patent: 5446565 (1995-08-01), Komma et al.

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