Apparatus and method for generating wobble clock

Details Apparatus and method for generating wobble clock Apparatus and method for generating wobble clock

2006-04-11

2006-04-11

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Clock or pulse waveform generating

C327S147000

Reexamination Certificate

active

07026852

ABSTRACT:
An apparatus for generating wobble clock comprises: a comparing circuit and a phase lock loop. The comparing circuit generates a combining signal according to peak values of the wobble signal and compares the output signal with a reference voltage to output a control signal. The phase lock loop drives the wobble clock to be synchronized with the wobble signal if the protection signal corresponds to a first logic level, and stops driving the wobble clock to be synchronized with the wobble signal if the protect signal corresponds to a second logic level.

REFERENCES:
patent: 6333902 (2001-12-01), Shim
patent: 6345023 (2002-02-01), Fushimi et al.
patent: 6661752 (2003-12-01), Eom
patent: 6891785 (2005-05-01), Yamamoto et al.
patent: 1373474 (2002-10-01), None
patent: 11-353686 (1999-12-01), None

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