Optical disk reproduction apparatus and optical disk...

Details Optical disk reproduction apparatus and optical disk... Optical disk reproduction apparatus and optical disk...

2008-03-11

2008-03-11

Nguyen, Hoa T. (Department: 2627)

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal processing of sectioned information

C369S047270, C369S047220, C369S059230

Reexamination Certificate

active

07342864

ABSTRACT:
There are provided a wobble signal reading unit configured to read a signal corresponding to a wobble formed at a predetermined track from an optical disk on which address information is recorded by applying phase modulation to the wobble formed at the track, an address information reproducing unit configured to reproduce the address information by applying phase detecting processing to the wobble signal read at the wobble signal reading unit, and binarizing an amplitude of an obtained phase detection signal by being compared with a predetermined threshold value, and a correcting unit configured to correct asymmetry of the amplitude generated in the phase detection signal obtained by the address information reproducing unit with respect to the predetermined threshold value at the time of reading the wobble signal from the predetermined track by the wobble signal reading unit.

REFERENCES:
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patent: 6809997 (2004-10-01), Park et al.
patent: 6912190 (2005-06-01), Inokuchi et al.
patent: 7200080 (2007-04-01), Matsumoto
patent: 1206904 (1999-02-01), None
patent: 1276596 (2000-12-01), None
patent: 2001-209937 (2001-08-01), None

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