Dual clock signal generating circuit

Details Dual clock signal generating circuit Dual clock signal generating circuit

1998-12-31

2000-10-24

Heckler, Thomas M.

Electrical computers and digital processing systems: support

Clock, pulse, or timing signal generation or analysis

327299, 331 49, G06F 104

Patent

active

061382469

ABSTRACT:
A clock circuit includes a clock signal generator for generating a first clock signal during a normal mode of operation and an oscillating dual clock generating circuit for producing a second clock signal during a second mode of operation. The oscillating dual clock generating circuit is connected to the output of the clock signal generator. In the first mode of operation, the clock signal from the clock signal generator is passed through the oscillating dual clock generating circuit to a control device. In a second mode of operation, the input of the oscillating research signal is isolated. Isolation of the oscillating dual clock generating circuit causes oscillation in the dual clock generating circuit. Thus, the dual clock generating circuit acts as an oscillator during the second mode of operation to generate a second clock signal.

REFERENCES:
patent: 4101838 (1978-07-01), Aihara et al.
patent: 4910703 (1990-03-01), Ikeda et al.
patent: 5369377 (1994-11-01), Benhamida
patent: 5550489 (1996-08-01), Raab
patent: 5929713 (1999-07-01), Kubo et al.

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