PCM coder-decoder

Details PCM coder-decoder PCM coder-decoder

1985-02-15

1986-05-27

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

179 18BC, 370 62, H04M 300

Patent

active

045918279

ABSTRACT:
Disclosed is a PCM coder-decoder having a construction such that a digital filter contained originally in the PCM coder-decoder is utilized on the time division basis in order to fold back a digital reception signal to a digital signal transmission side and thus to accomplish interruption, communication exchange between three parties, gain control, fold-over test of the PCM signal, and so forth, in addition to the coding and decoding functions inherent to the PCM coder-decoder.

REFERENCES:
patent: 4119807 (1978-10-01), Nahay
patent: 4190742 (1980-02-01), Southard

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