Pulse or digital communications – Repeaters – Testing
Patent
1988-05-05
1990-07-10
Cangialosi, Salvatore
Pulse or digital communications
Repeaters
Testing
380 34, 380 48, H04K 110
Patent
active
049411500
ABSTRACT:
A spread spectrum communication system has, in a transmission part, a first circuit for extracting a first carrier signal from a predetermined broadcase wave and generating a first clock signal by using the first carrier signal, a second circuit for generating a first pseudo-noise signal by using the first clock signal from the first circuit, and a third circuit for modulating an information signal and broadening a frequency band of the modulated information signal by using the first pseudo-noise signal from the second circuit. A reception part of the spread spectrum communication system uses a second clock signal, a frequency of which is identical to that of the first clock signal. Thereby the second clock signal becomes identical to the first clock signal in frequency.
REFERENCES:
patent: 4045796 (1977-08-01), Kline, Jr.
patent: 4327438 (1982-04-01), Baier et al.
patent: 4447907 (1984-05-01), Bjopnholt et al.
patent: 4532635 (1985-07-01), Mangulis
patent: 4532636 (1985-07-01), Wilkinson
patent: 4543657 (1985-09-01), Wilkinson
patent: 4649549 (1987-03-01), Halpern et al.
patent: 4829540 (1989-05-01), Waggener, Sr. et al.
The Radio Amateur's Handbook (1973), Standard Frequencies and Time Signals, Myers Ed.
Cangialosi Salvatore
Meller Michael N.
Victor Company of Japan Ltd.
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