Delta modulation system employing digital frame averaging

Details Delta modulation system employing digital frame averaging Delta modulation system employing digital frame averaging

1975-03-17

1976-09-14

Stewart, David L.

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

179 15AP, 332 11D, 340347AD, 340347DD, H03K 1311

Patent

active

039809536

ABSTRACT:
A delta modulator produces a digital bit stream from an input analog waveform and applies same to bit-averaging circuitry dividing the bit stream into time-frame intervals and computing the average slope per frame. Each average time-frame slope value is transmitted over a communication system as a discrete digital signal and at a receiver each such signal is employed to set the gain of a multi-level integrator and thus incrementally reconstruct the original waveform.

REFERENCES:
patent: 3878465 (1975-04-01), Stephenne
IBM Technical Disclosure Bulletin, vol. 15, No. 11, Apr. 1973, by Johnson et al.

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