Frequency divider

Details Frequency divider Frequency divider

2005-07-27

2009-08-25

Zweizig, Jeffrey S (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Frequency or repetition rate conversion or control

Reexamination Certificate

active

07579883

ABSTRACT:
A frequency divider providing an odd integer division factor comprising a binary counter (10) providing an even integer division factor, which is the first even number smaller than the odd division factor, the binary counter having a clock input for receiving a periodical clock signal (Ck) having a frequency. The circuit further comprises an end of count circuit (20) coupled to the binary counter and generating an End Of Count signal (EOC) for a clock (Ck) period after every even integer number periods of the clock signal (Ck), the end of count signal (EOC) being inputted to an input (IN) of the counter (10). The circuit further includes an output generator (30) coupled to the binary counter and to the clock signal (Ck), the output generator (30) generating an output signal (OUT) having a frequency which is substantially equal with the frequency of the frequency signal (Ck) divided by the odd division factor.

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patent: 6064247 (2000-05-01), Krakirian
patent: 7197104 (2007-03-01), Cheung et al.

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