Hysteresis circuit device

Details Hysteresis circuit device Hysteresis circuit device

2006-08-22

2006-08-22

Nguyen, Long (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Particular stable state circuit

C327S077000, C327S407000

Reexamination Certificate

active

07095263

ABSTRACT:
The present invention provides one hysteresis circuit device. The hysteresis circuit device includes an input voltage level generator, a switch, and a comparator. The input voltage level generator is used to receive an input signal and output a high input voltage and a low threshold voltage. The switch is used to receive the high input voltage and the low threshold voltage, and output a switch output signal according to a digital signal. The comparator has one terminal used to receive the switch output signal, and another terminal used to receive a reference signal. Then, the comparator outputs the digital signal. The hysteresis circuit device can change their voltage levels by an external circuit; therefore, the noise resulting from the input signal can be avoided and the problem of false detection of the comparator can be solved.

REFERENCES:
patent: 6348833 (2002-02-01), Tsujimoto et al.
patent: 6597224 (2003-07-01), Lin et al.
patent: 6906568 (2005-06-01), Lin et al.
patent: 6940329 (2005-09-01), Tsai et al.

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