Information recording system and an information recording...

Details Information recording system and an information recording... Information recording system and an information recording...

2008-05-20

2009-12-22

Neyzari, Ali (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044250, C369S053340

Reexamination Certificate

active

07636278

ABSTRACT:
An information recording system for recording information on an optical disc using a reference clock signal generated based on a push-pull signal including a wobble frequency component, the system includes an amplitude obtaining unit for obtaining an amplitude value of the push-pull signal, a threshold calculation unit for calculating a displacement threshold of the push-pull signal based on the amplitude value obtained by the amplitude obtaining unit, and a noise reduction unit for generating a corrected push-pull signal by correcting the push-pull signal such that a displacement exceeding the displacement threshold is reduced. The reference clock signal is generated based on the corrected push-pull signal generated by the noise reduction unit.

REFERENCES:
patent: 6188655 (2001-02-01), Yoshida et al.
patent: 7054250 (2006-05-01), Hsu et al.
patent: 7362664 (2008-04-01), Ishibashi et al.
patent: 10-241260 (1998-09-01), None
patent: 3635514 (2004-04-01), None

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