Method and apparatus for coding a signal

摘要

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.