False lock detection mechanism for use in a delay locked...

Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing

Reexamination Certificate

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C327S149000

Reexamination Certificate

active

07733138

ABSTRACT:
The delay locked loop circuit includes a charge pump circuit that may charge and discharge in response to an assertion of an up signal and a down signal, respectively. The delay locked loop circuit also includes a detection circuit that may assert the up signal indicating an occurrence of a transition of a first clock signal and may assert the down signal indicating an occurrence of a transition of a second clock signal. The delay locked loop circuit further includes a delay circuit that may provide a plurality of delayed clock signals and an additional delayed clock signal, each corresponding to a delayed version of the first clock signal. Further, a false lock circuit may provide a reset signal to the detection circuit dependent upon whether a predetermined number of successive clock edges associated with the delayed clock signals occur within a given clock cycle of the first clock signal.

REFERENCES:
patent: 6037812 (2000-03-01), Gaudet
patent: 6259290 (2001-07-01), Takada et al.
patent: 6320469 (2001-11-01), Friedberg et al.
patent: 6326826 (2001-12-01), Lee et al.
patent: 6504408 (2003-01-01), von Kaenel
patent: 6794945 (2004-09-01), McDonald et al.
patent: 6844761 (2005-01-01), Byun et al.
patent: 6970047 (2005-11-01), Johnson et al.
patent: 7015725 (2006-03-01), Yu et al.
patent: 7015727 (2006-03-01), Balasubramanian
patent: 7034591 (2006-04-01), Wang

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