Asynchronous quadriphase communications system and method

Details Asynchronous quadriphase communications system and method Asynchronous quadriphase communications system and method

1974-05-07

1976-01-06

Cooper, William C.

Telegraphy

Systems

Printing

178 67, H04J 306

Patent

active

039314723

ABSTRACT:
A communications system and method for transmitting and receiving two independently timed (asynchronous) binary data signals on a quadriphase carrier. The four phase ambiguity ordinarily resulting from quadriphase transmission and reception is overcome by uniquely identifying one input channel, for example, by slightly increasing the clock rate of the channel. In reception each channel is demodulated and the data rate of each channel is examined to identify the increased clock rate channel. That channel is then returned to its original clock rate.

REFERENCES:
patent: 3736507 (1973-05-01), Wolejsza
patent: 3809817 (1974-05-01), Gill

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