Digital servomotor drive apparatus

Details Digital servomotor drive apparatus Digital servomotor drive apparatus

1980-10-31

1983-05-10

Dobeck, B.

Communications: electrical

Audible indication

Percussion-type sound producer

318341, 318599, 318603, G05B 1128, H03K 1302

Patent

active

043832458

ABSTRACT:
An apparatus for converting digital signals into analog pulse width modulated signals without a D/A Converter includes an up-down counter, programmed by the digital signal, which provides a signal to logic circuitry at the conclusion of each count. The logic circuitry responds to the counter signal and clock signals coupled thereto to provide an analog pulse width modulated signal corresponding to the digital signal.

REFERENCES:
patent: 3597693 (1971-08-01), McNeilly
patent: 3646545 (1972-02-01), Naydan et al.
patent: 3754233 (1973-08-01), Sutherland
patent: 4105939 (1978-08-01), Culbertson
patent: 4259626 (1981-03-01), Nomura et al.
patent: 4287458 (1981-09-01), Nakamura et al.
patent: 4311949 (1982-01-01), Pelkmann et al.

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