Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By frequency
Reexamination Certificate
2007-03-20
2008-12-30
Lam, Tuan T (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By frequency
C327S049000
Reexamination Certificate
active
07471117
ABSTRACT:
The circuit for detecting the maximal frequency of the pulse frequency modulation includes an oscillator-controlling unit, a delay circuit and a master-slave register. The oscillator-controlling unit is connected to an oscillator, which generates the pulse frequency modulation signals, and includes a first-half pulse-generating module and a second-half pulse-generating module. The delay circuit is connected to the second-half pulse-generating module. The master-slave register includes a clock, an input end and an output end, wherein the input end is connected to the oscillator-controlling unit, and the clock is connected to the delay circuit.
REFERENCES:
patent: 6278301 (2001-08-01), Jones et al.
patent: 7183810 (2007-02-01), Park
patent: 7259595 (2007-08-01), Kim
Chen Li Chieh
Chu Chu Yu
Sun Yu Min
Advanced Analog Technology, Inc.
Lam Tuan T
Oliff & Berridg,e PLC
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