Delay circuit

Details Delay circuit Delay circuit

2011-03-22

2011-03-22

Luu, An T (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Having specific delay in producing output waveform

C327S265000

Reexamination Certificate

active

07911250

ABSTRACT:
A delay circuit includes a ring oscillator and a control circuit. The control circuit includes an edge detector that outputs a first control signal in response to a rising edge or a falling edge of an input signal, and a counter that counts the number of pulses of an output pulse signal output from the ring oscillator and outputs a second control signal upon reaching a predetermined count number. The control circuit performs control to make the ring oscillator oscillate in response to the first control signal and to output the input signal in response to the second control signal.

REFERENCES:
patent: 4710653 (1987-12-01), Yee
patent: 7786782 (2010-08-01), Lien et al.
patent: 2004/0051569 (2004-03-01), Jeon
patent: 2010/0109641 (2010-05-01), Noda et al.
patent: 63-316918 (1988-12-01), None
patent: 2004-104748 (2004-04-01), None

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