Duty cycle correction circuits suitable for use in...

Details Duty cycle correction circuits suitable for use in... Duty cycle correction circuits suitable for use in...

2007-04-03

2007-04-03

Nguyen, Long (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Rectangular or pulse waveform width control

C327S172000

Reexamination Certificate

active

11005821

ABSTRACT:
Delay-locked loop integrated circuits include a duty cycle correction circuit. This duty cycle correction circuit generates at least one output clock signal having a substantially uniform duty cycle in response to at least one input clock signal having a non-uniform duty cycle. The duty cycle correction circuit is also responsive to a standby control signal that synchronizes timing of power-saving duty cycle update operations within the duty cycle correction circuit. These update operations reset the set point of the correction circuit.

REFERENCES:
patent: 6342801 (2002-01-01), Shin
patent: 6373309 (2002-04-01), Bang
patent: 6643790 (2003-11-01), Yu et al.
patent: 6735669 (2004-05-01), Shin
patent: 6882196 (2005-04-01), Yee et al.
patent: 6963235 (2005-11-01), Lee
patent: 2001/0029566 (2001-10-01), Shin
patent: 010037024 (2001-05-01), None
patent: 1020030052650 (2003-06-01), None

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