Phase frequency detector with limited output pulse width and...

Details Phase frequency detector with limited output pulse width and... Phase frequency detector with limited output pulse width and...

2006-04-06

2008-08-12

Butler, Dennis M (Department: 2115)

Electrical computers and digital processing systems: support

Clock, pulse, or timing signal generation or analysis

Correction for skew, phase, or rate

C713S400000, C713S500000

Reexamination Certificate

active

07412617

ABSTRACT:
Phase frequency detectors with limited output pulse width and related methods are disclosed. The proposed phase frequency detector generates a first output signal and a second output signal corresponding to phase difference or frequency difference between a first signal and a second signal. When the phase difference between the first and second signals is greater than a predetermined delay, the pulse width of the first output signal is limited, so that the proposed phase frequency detector has a limited equivalent output pulse width.

REFERENCES:
patent: 5977801 (1999-11-01), Boerstler
patent: 6239632 (2001-05-01), Moyal et al.
patent: 6590949 (2003-07-01), Marten et al.
patent: 6850051 (2005-02-01), Roberts et al.
patent: 2002/0163325 (2002-11-01), Nilsson
patent: 2004/0239386 (2004-12-01), Lim et al.
patent: 2006/0119405 (2006-06-01), Kobayashi

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