Single VCO/loop filter to control a wobble and read circuit...

Details Single VCO/loop filter to control a wobble and read circuit... Single VCO/loop filter to control a wobble and read circuit...

2006-11-21

2006-11-21

Tra, Quan (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S159000, C327S298000

Reexamination Certificate

active

07138840

ABSTRACT:
An apparatus comprising a clock generation circuit, a detect circuit and a select circuit. The clock generator circuit may be configured to generate an output clock signal in response to a control signal. The detect circuit may be configured to generate a detect signal in response to (i) the output clock signal and (ii) an input signal. The select circuit may be configured to generate the control signal by selecting (i) a first input when in a first mode (ii) the detect signal when in a second mode. The first and second modes are selected in response to a selection signal.

REFERENCES:
patent: 5506627 (1996-04-01), Ciardi
patent: 5898328 (1999-04-01), Shoji
patent: 6075416 (2000-06-01), Dalmia
patent: 6285225 (2001-09-01), Chu et al.
patent: 6310521 (2001-10-01), Dalmia
patent: 6404247 (2002-06-01), Wang
patent: 6794946 (2004-09-01), Farjad-Rad
patent: 6867627 (2005-03-01), Murtagh

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