Multiplex communications – Channel assignment techniques – Combining or distributing information via code word channels...
Reexamination Certificate
2009-01-27
2011-12-06
Pham, Chi (Department: 2471)
Multiplex communications
Channel assignment techniques
Combining or distributing information via code word channels...
C375S145000
Reexamination Certificate
active
08073000
ABSTRACT:
In a code division multiplex transmitting and receiving system, the transmitting apparatus inserts a clock signal in the code division multiplex signal. The clock signal has a frequency equal to a null frequency in the frequency spectrum of the code division multiplex signal. The receiving apparatus extracts this frequency component from the received signal and recovers the clock signal, using an ordinary clock recovery device of the type designed to recover a clock signal from a bi-level signal. The recovered clock signal is used as a synchronizing signal in the processing of the received signal.
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Andreasen David S
Oki Electric Industry Co. Ltd.
Pham Chi
Rabin & Berdo P.C.
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