Multiplex/demultiplex apparatus

Details Multiplex/demultiplex apparatus Multiplex/demultiplex apparatus

1977-02-17

1978-08-15

Stewart, David L.

179 15AF, 179 15BD, H04T 318

Patent

active

041074696

ABSTRACT:
An encoding scheme for simplifying frame acquisition and access to an auxiliary channel information bit stream and apparatus for implementing same. A pair of incoming data channels are multiplexed onto three communicating data channels wherein one of the channels contains overhead bits and high speed data bits, a second channel contains auxiliary channel bits and high speed data bits and a third channel contains only high speed data bits. With this format, the operational frequency of the frame acquisition circuit is reduced compared to multiplexing to a single channel and the channel containing only high speed data can be used directly for bit error rate (BER) measurements.

REFERENCES:
patent: 3569631 (1971-03-01), Johannes
patent: 3602647 (1971-08-01), Kawashima
patent: 3622885 (1971-11-01), Kruszynski
patent: 3660606 (1972-05-01), DeWitt
patent: 3886317 (1975-05-01), Drapkin
patent: 3931473 (1976-01-01), Ferris
patent: 3939307 (1976-02-01), Bishop

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