Dynamic information storage or retrieval – Binary pulse train information signal – Binary signal processing of sectioned information
Reexamination Certificate
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
10935183
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.
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Nagai Yuji
Ogawa Akihito
Chu Kim-Kwok
Kabushiki Kaisha Toshiba
Nguyen Hoa T.
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