Pulse or digital communications – Spread spectrum – Direct sequence
Patent
1988-09-30
1990-03-20
Safourek, Benedict V.
Pulse or digital communications
Spread spectrum
Direct sequence
371 471, 375116, 375121, H04L 710
Patent
active
049107542
ABSTRACT:
An initialization or synchronization method in which at least a predetermined number of synchronization messages are sent out over a two-way communication line. The receipt of a synchronization message is awaited before terminating the transmission of synchronization message. After the transmission of synchronization messages has been terminated the receipt of a non-synchronization message will complete the synchronization process. However, certain conditions may cause synchronization to be restarted such as a predetermined number of consecutive error messages, failure to receive any message in a predetermined number of clock signals, receiving more than a predetermined number of synchronization signals, or a reset command.
REFERENCES:
patent: 3245040 (1966-04-01), Burdett et al.
patent: 3457550 (1969-07-01), Gibson et al.
patent: 4641310 (1987-02-01), Martens et al.
patent: 4695946 (1987-09-01), Andreasen et al.
patent: 4727370 (1988-02-01), Shih
patent: 4782498 (1988-11-01), Copeland, III
Allen John D.
Hill Jeffrey V.
Asher Robert M.
Bronstein Sewall P.
Data General Corporation
Safourek Benedict V.
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