Pulse or digital communications – Spread spectrum – Direct sequence
Patent
1982-12-27
1986-02-25
Bookbinder, Marc E.
Pulse or digital communications
Spread spectrum
Direct sequence
370106, H04L 708
Patent
active
045731713
ABSTRACT:
A sync detect circuit for detecting a sync code in a stream of digital data includes a counter that converts locally generated clock pulses to a plurality of discrete addresses that occur every bit period of time. The addresses are applied to a PROM which upon being addressed provides a sync verify code. The sync verify code is applied to a sync verify detector which provides an enable signal to the address generator if the code compares with the logic levels of a coincident bit in the stream of digital data provided from the PROM and after the full sync code has been rectified a sync detect signal is provided from a sync detector circuit.
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Lavenz James M.
McMahon, Jr. Michael F.
Bookbinder Marc E.
Chin Stephen
Hamann H. Fredrick
Montanye George A.
Robinson Richard K.
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