Pulse or digital communications – Spread spectrum – Direct sequence
Patent
1985-03-28
1987-02-17
Griffin, Robert L.
Pulse or digital communications
Spread spectrum
Direct sequence
328154, H03K 1700
Patent
active
046445684
ABSTRACT:
An arrangement for selectively connecting a first or a second frequency synchronous timing signal to an outgoing conductor is disclosed. When a transition from the first to the second timing signal occurs, the first timing signal is inhibited from being transmitting on the outgoing conductor and the logical AND of the second timing signal and a delayed version of the second timing signal is transmitted on the outgoing conductor for approximately one period of the timing signals. Thereafter, the second clock signal is transmitted on the outgoing conductor. Arrangements are also disclosed for switching from the second timing signal to the first timing signal.
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Canniff Ronald J.
Derrenberger Mike A.
AT&T Bell Laboratories
Griffin Robert L.
Huseman M.
Samples Kenneth H.
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