Method and apparatus for coding a signal

Details Method and apparatus for coding a signal Method and apparatus for coding a signal

1976-01-29

1978-05-16

Griffin, Robert L.

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

332 11D, 340347AD, H03K 1322

Patent

active

040901360

ABSTRACT:
The invention relates to the coding of analog signals. An analog signal is compared with a comparison signal increasing according to a given law, until equality with the analog signal is reached; then, the comparison signal remains constant during a predetermined time and resumes its original value. The transmission device includes a processing circuit at the transmission end and at the receiving end; at the transmission end, the processing circuit is preceded by a comparator receiving the analog signal, and the comparison signal supplied by a converter is fed thereto by the processing circuit; at the receiving end, the signal to be decoded is supplied to a forming circuit connected to the input of the processing circuit. The present invention is applicable to data transmission and to telephony in particular.

REFERENCES:
patent: 3339142 (1967-08-01), Varsos
patent: 3879663 (1975-04-01), McGrogan, Jr.
patent: 3908181 (1975-09-01), Shigaki et al.

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