Method and apparatus to correct wobble phase slip in optical...

Details Method and apparatus to correct wobble phase slip in optical... Method and apparatus to correct wobble phase slip in optical...

2007-10-26

2010-10-19

Edun, Muhammad N. (Department: 2627)

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Control of information signal processing channel

C369S047480, C369S059190, C369S059200, C369S044130

Reexamination Certificate

active

07817512

ABSTRACT:
The present disclosure can provide a method and an apparatus to correct wobble phase slip in an optical disc recording system during recording. The method of correcting a phase slip can include receiving a wobble signal of a first frequency, sampling the wobble signal to generate a sampled wobble signal, where the wobble signal is sampled at a second frequency that corresponds to a frequency of a sampling signal, comparing a phase of the sampled wobble signal with a phase of a controlled signal to generate a phase error, modifying the phase error by adding a phase bias, and adjusting the second frequency based on the modified phase error to reduce a magnitude of the modified phase error.

REFERENCES:
patent: 6345018 (2002-02-01), Maegawa et al.
patent: 2007/0097825 (2007-05-01), Holstine

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