Synchronizing unit

Details Synchronizing unit Synchronizing unit

1986-08-19

1988-09-13

Buczinski, Stephen C.

Pulse or digital communications

Spread spectrum

Direct sequence

328 63, 307269, H04L 700, H03K 117

Patent

active

047714417

ABSTRACT:
A synchronizing unit generates synchronized pulse sequences from an external digital signal pulse sequence, with the assistance of an internal work clock, using two serially connected flip-flops for accepting external digital signal pulse sequences and for providing synchronized data and clock pulses corresponding thereto. The clock of the external digital signal pulse sequence has the same clock frequency as the work clock with which the data is to be synchronized, but with an undefined phase relation. For the purpose of synchronizing, during a acquisition state, a switching stage is driven into a first state by the clock of the external digital signal pulse sequence, and a divider is triggered by the output of the switching stage. In a second state of the switching stage, corresponding to a normal operating state, the first switching stage is deactivated and the divider operates continuously.

REFERENCES:
patent: 3123810 (1964-03-01), Strauch, Jr. et al.
patent: 3537075 (1970-10-01), Anderson et al.
patent: 3810235 (1974-05-01), Hopkins et al.
patent: 4039960 (1977-08-01), Clark
patent: 4380736 (1983-04-01), Pfaff
patent: 4719365 (1988-01-01), Misono

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