Delay circuit with reset-based forward path static delay

Details Delay circuit with reset-based forward path static delay Delay circuit with reset-based forward path static delay

2006-10-24

2006-10-24

Callahan, Timothy P. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S158000

Reexamination Certificate

active

07126393

ABSTRACT:
A delay locked loop circuit and method of operating the same. The delay locked loop circuit comprises a forward delay path having a variable delay portion and a static delay portion, wherein the static delay portion includes a static delay element, a feedback path for generating a feedback signal responsive to an output signal, and a phase detector for comparing the phase of an input signal and the phase of the feedback signal and for generating a variable control signal for controlling the amount of delay provided by the variable delay portion, wherein the static delay element is activated in response to a static control signal indicative of the variable delay portion being unable to lock the output signal to the input signal. Because of the rules governing Abstracts, this Abstract should not be used to construe the claims.

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patent: 2004/0125905 (2004-07-01), Vlasenko et al.
patent: 2004/0213051 (2004-10-01), Lin et al.

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