ADIP demodulation method and apparatus

Details ADIP demodulation method and apparatus ADIP demodulation method and apparatus

2007-10-30

2007-10-30

Korzuch, William (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S059230

Reexamination Certificate

active

10623576

ABSTRACT:
An ADIP demodulation method and apparatus, which are used in an optical disk driver to generate the ADIP information according to a wobble signal. The apparatus includes a slicing unit for receiving the wobble signal and generating a wobble pulse, a phase locked loop for generating a reference wobble signal with the same frequency and phase as the wobble pulse and a reference clock with frequency higher than the wobble pulse, a channel bit generator for generating a channel bit signal according to the reference wobble signal and the wobble pulse, and a decoder for decoding to ADIP information according to the channel bit signal. The channel bit generator generates a difference signal between the wobble pulse and the reference wobble signal, and outputs the channel bit signal according to the difference signal.

REFERENCES:
patent: 6265919 (2001-07-01), Guisante et al.
patent: 6657929 (2003-12-01), Minamino et al.
patent: 2003/0086348 (2003-05-01), Takahashi
patent: 2003/0198164 (2003-10-01), Eom

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