Clock error detection circuits, methods, and systems

Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By pulse coincidence

Reexamination Certificate

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C326S095000, C326S096000, C326S097000, C326S098000

Reexamination Certificate

active

11477833

ABSTRACT:
Clock error detections circuits can detect clock duty cycle error and/or quadrature phase error. During an evaluation phase, capacitors are charged. During an evaluation phase, the capacitors are unequally discharged based on the error. A positive feedback mechanism latches the result.

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Yoo, C. , et al., “Open-loop full-digital duty cycle correction circuit”, Electronics letters, vol. 41, No. 11,(May 26, 2005),2pgs.

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