Adaptive delta modulation system

Details Adaptive delta modulation system Adaptive delta modulation system

1976-05-17

1978-01-31

Griffin, Robert L.

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

332 11D, H03K 1322

Patent

active

040718255

ABSTRACT:
A delta modulation system for generating a digital output signal representative of an analog input signal. The analog input signal is periodically compared to an analog feedback signal to generate the digital output signal. The analog feedback signal is generated from the digital output signal by generating a signal having an amplitude indicative of the absolute value of the derivative of the analog input signal, multiplying such absolute value signal by the digital output signal and integrating the product signal.

REFERENCES:
patent: 3609551 (1971-09-01), Brown
patent: 3699566 (1972-10-01), Schindler
patent: 3727135 (1973-04-01), Holzer
patent: 3857111 (1974-12-01), Deschenes
patent: 3922606 (1975-11-01), Nordling
patent: 3995218 (1976-11-01), Moriya

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