Frame synchronizing apparatus

Details Frame synchronizing apparatus Frame synchronizing apparatus

1988-03-31

1990-04-24

Safourek, Benedict V.

Pulse or digital communications

Spread spectrum

Direct sequence

375119, 370106, 3408252, H04L 700

Patent

active

049205463

ABSTRACT:
Disclosed is a frame synchronizing apparatus in a receiving equipment for receiving digital signals for PCM communication. The digital signals consists serial signals at a rate of f.sub.0 (bps). The serial signals include a frame synchronizing signal consituting n bits or a part of the frame synchronizing signal, collectively arranged in one frame. To attain a high-speed operation and a shorter synchronization establishing time, the apparatus comprises a latching circuit for converting the serial signals into parallel signals and for latching the parallel signals, and a circuit for detecting a plural number of times of synchronization during the n bit interval in one frame.

REFERENCES:
patent: 4002845 (1977-01-01), Kaul et al.
patent: 4276642 (1981-06-01), Siglow et al.
patent: 4596981 (1986-06-01), Ueno et al.
patent: 4674087 (1987-06-01), Green et al.
patent: 4674088 (1987-06-01), Grover
patent: 4748623 (1988-05-01), Fujimoto
patent: 4768192 (1988-08-01), Pattavina et al.
patent: 4802192 (1989-01-01), Eto et al.

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