Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Frequency or repetition rate conversion or control
Reexamination Certificate
2007-03-27
2007-03-27
Le, Dinh T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Frequency or repetition rate conversion or control
C327S119000, C327S113000
Reexamination Certificate
active
11160057
ABSTRACT:
A clock frequency multiplier is provided. The clock frequency multiplier comprises a tracking circuit, a pulsing circuit, and a shaping circuit. The tracking circuit receives a clearing signal and a reference clock signal, outputs the quotient of the number of cycles of the reference clock signal in a cycle of the clearing signal divided by a first predetermined value. The pulsing circuit outputs a pulsing signal wherein the frequency of the pulsing signal is the frequency of the clearing signal multiplied by the first predetermined value. The shaping circuit divides the frequency of the pulsing signal by a second predetermined value and shapes the pulsing signal into a clock signal with a predetermined duty cycle, and outputs the divided and shaped pulsing signal as an output clock signal.
REFERENCES:
patent: 6195392 (2001-02-01), O'Grady
patent: 7064617 (2006-06-01), Hein et al.
J.C. Patents
Le Dinh T.
Winbond Electronics Corp.
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