Pulse or digital communications – Spread spectrum – Direct sequence
Patent
1981-12-18
1983-10-25
Griffin, Robert L.
Pulse or digital communications
Spread spectrum
Direct sequence
375108, 307219, 307480, H03K 117
Patent
active
044123426
ABSTRACT:
A clock synchronization system for use in a digital switching system including multiple clock circuits. This circuit includes multiple synchronization circuits connected in a master-slave arrangement. Each synchronization circuit includes a counter chain which provides a periodic system framing pulse and a trigger circuit which insures that its slave system framing pulse is in synchronization with the master system framing pulse.
REFERENCES:
patent: 4019143 (1977-04-01), Fallon et al.
patent: 4156200 (1979-05-01), Gomez
patent: 4282493 (1981-08-01), Moreau
Edwards Ivan L.
Khan Ashfaq R.
Black Robert J.
Chin Stephen
Griffin Robert L.
GTE Automatic Electric Labs Inc.
Hendricks Gregory G.
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