Counter employing feedback shift register controlling hysteresis

Details Counter employing feedback shift register controlling hysteresis Counter employing feedback shift register controlling hysteresis

1985-07-18

1986-02-25

Heyman, John S.

Electrical pulse counters, pulse dividers, or shift registers: c

Counting or dividing in incremental steps

Hysteresis storage

377 47, 377 72, 377 75, H03K 2512

Patent

active

045731780

ABSTRACT:
A counter for counting pulses or dividing frequencies has a timing signal generator circuit for generating a timing signal at a predetermined interval. A hysteresis circuit has input-output characteristics defining a low input threshold level and a high input threshold level. A control circuit responds to the timing signal for generating at least three control signals having different levels including a first control signal having a level lower than the low input threshold level, a second control signal having a level higher than the high input threshold level, and a third control signal having an intermediate level which is between the low input threshold level and the high input threshold level. The counter has a very large capacity, simple construction, and is effective with both analog and digital signals.

REFERENCES:
patent: 2846670 (1958-08-01), Torrey
patent: 4348597 (1982-09-01), Weber

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