Method and means of clock recovery in a received stream of digit

Details Method and means of clock recovery in a received stream of digit Method and means of clock recovery in a received stream of digit

1980-12-30

1983-08-23

Safourek, Benedict V.

Pulse or digital communications

Spread spectrum

Direct sequence

331 1A, 328 63, H03B 306

Patent

active

044008171

ABSTRACT:
Clock recovery in a received stream of digital data is effected by generating a high-speed clock pulse that is applied to a programmable divider to produce a recovered clock pulse. Comparison of the phase of the recovered clock pulse with that of a received signal causes accumulation of fast or slow counts that increase or decrease the division of the programmable divider to restore synchronism. The accumulated count is reduced for rapid recovery when the two signals are unsynchronized.

REFERENCES:
patent: 3668315 (1972-06-01), Heitzman
patent: 3946323 (1976-03-01), Bjerede
patent: 4074514 (1978-02-01), Vaucher
patent: 4105979 (1978-08-01), Kage
patent: 4121162 (1978-10-01), Alberkrack et al.
patent: 4151485 (1979-04-01), La Fratta
patent: 4216544 (1980-08-01), Boleda et al.
patent: 4219783 (1980-08-01), Carter et al.
patent: 4280099 (1981-07-01), Rattlingourd
patent: 4296407 (1981-10-01), Minakuchi

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