High-accuracy continuous duty-cycle correction circuit

Details High-accuracy continuous duty-cycle correction circuit High-accuracy continuous duty-cycle correction circuit

2006-10-10

2006-10-10

Decady, Albert (Department: 2138)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Skew detection correction

C714S707000

Reexamination Certificate

active

07120839

ABSTRACT:
A control circuit corrects duty-cycle distortion of clock signals accurately and with a fast and continuous response over a wide dynamic range. In one embodiment, the duty-cycle correction circuit includes a self-biased loop that corrects duty-cycle distortions to preferably less than +/−1%. The duty-cycle correction circuit also compensates for changes in a supply voltage. These corrections may take place on a continuous basis, not only during a testing period but also during normal operation of the host system driven by the clock signals.

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patent: 6924480 (2005-08-01), Van der Veer et al.
patent: 6967514 (2005-11-01), Kizer et al.
patent: 6981185 (2005-12-01), Davis et al.

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