Pulse or digital communications – Spread spectrum – Direct sequence
Patent
1984-12-31
1988-06-21
Griffin, Robert L.
Pulse or digital communications
Spread spectrum
Direct sequence
375 87, 360 42, 307518, 328 72, H04L 702, H03D 318
Patent
active
047529423
ABSTRACT:
A clock pulse is derived from a received biphase modulated signal by feeding the biphase modulated signal and a signal indicative of the time points at which a code ONE of the received signal changes to a code ZERO and vice versa, to an exclusive OR circuit.
REFERENCES:
patent: 4085288 (1978-04-01), Viswanathan
patent: 4088832 (1978-05-01), Eastmond
patent: 4313206 (1982-01-01), Woodward
patent: 4513427 (1985-04-01), Borriello
patent: 4525848 (1985-06-01), Simpson
patent: 4599736 (1986-07-01), Hoppe
Griffin Robert L.
Huseman Marianne
NEC Corporation
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