PCM Encoder conformable to the A-law

Details PCM Encoder conformable to the A-law PCM Encoder conformable to the A-law

1983-03-18

1985-03-26

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

332 11D, 340347AD, H04B 1204, H03K 1302

Patent

active

045077924

ABSTRACT:
In a PCM encoder, in order to reduce noise in an idle channel or in the absence of any voice signal, a detector circuit is provided which detects the idle channel, and a circuit is connected to the detector circuit which fixes the polarity bit of the PCM signal produced by the PCM encoder when the detector circuit has detected the idle channel.

REFERENCES:
patent: 3688221 (1972-08-01), Fruhalf
patent: 3882489 (1975-05-01), Guggolz
patent: 4151516 (1979-04-01), O'Neill

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