Digital hysteresis circuit

Details Digital hysteresis circuit Digital hysteresis circuit

1978-04-20

1980-03-18

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

340347CC, H03K 1302

Patent

active

041941861

ABSTRACT:
Noise induced hunting is eliminated in successive ranged digital/analog converter bias correction circuits by means of a digital hysteresis circuit. The digital hysteresis circuit comprehends a first up/down counter that counts to its extremums from a pre-set intermediate state in response to enable and up/down input signals. For each extremum count an enable output pulse and a reset pulse is generated at the counter output. The enable output pulses are counted by a second up/down counter the output of which drives a digital/analog converter. Each reset pulse resets the first up/down counter to its pre-set state.

REFERENCES:
patent: 3786488 (1974-01-01), Ahlgren
patent: 3786491 (1974-01-01), Carleton
patent: 4084082 (1978-04-01), Alfke

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