DocumentCode
886281
Title
A single-channel PCM codec
Author
Everard, John D.
Volume
14
Issue
1
fYear
1979
Firstpage
25
Lastpage
37
Abstract
A single channel PCM codec is described which is being manufactured for use in the new British Post Office range of digital PABXs. The codec works on the principle of converting to and from PCM using an intermediate delta sigma modulation code format. This technique allows relatively simple analog circuitry to be used in conjunction with a digital LSI chip to perform the conversion between the intermediate code and PCM. The codec meets all the relevant CCITT Recommendations with significant operating margins.
Keywords
Code convertors; Digital communication systems; Digital integrated circuits; Encoding; Large scale integration; Private telephone exchanges; Pulse-code modulation; code convertors; digital communication systems; digital integrated circuits; encoding; large scale integration; private telephone exchanges; pulse-code modulation; Biographies; Circuit testing; Codecs; Decoding; Electrical engineering; Interpolation; Large scale integration; Phase change materials; Physics;
fLanguage
English
Journal_Title
Solid-State Circuits, IEEE Journal of
Publisher
ieee
ISSN
0018-9200
Type
jour
DOI
10.1109/JSSC.1979.1051138
Filename
1051138
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