Pulse or digital communications – Repeaters – Testing
Patent
1985-06-06
1989-11-14
Safourek, Benedict V.
Pulse or digital communications
Repeaters
Testing
328155, 375119, 375120, H04L 702
Patent
active
048812439
ABSTRACT:
A signal timing circuit for use in re-timing circuits in digital signal regenerators in long distance telecommunications systems is disclosed. A phase control circuit controls the timing of clock signal relative to digital signals at a re-timing gate by means of a negative feedback loop and a phase shifter. The feed back loop maintains the desired relative timing in dependence upon a reference voltage (V.sub.ref) and a voltage (V.sub.var) obtained from the phase difference of the input digital signals (.phi..sub.i) and the output digital signals (.phi..sub.o) of the re-timing gate.
REFERENCES:
patent: 3546383 (1970-12-01), Lyon
patent: 3617774 (1971-01-01), Crouse
patent: 3778550 (1973-12-01), David et al.
patent: 3781470 (1973-12-01), Horn
patent: 3820034 (1974-06-01), Ball
patent: 3908091 (1975-09-01), Waldeck
patent: 3984777 (1976-10-01), Noguchi
patent: 3986126 (1976-10-01), Gindi et al.
patent: 3992581 (1976-11-01), Davis
patent: 3993952 (1976-11-01), Roza
patent: 4012591 (1977-03-01), Sailer et al.
patent: 4384358 (1983-05-01), Shiki et al.
patent: 4385396 (1983-05-01), Norton
patent: 4393279 (1983-07-01), Cochrane et al.
IEE 1982 Ultrasonics Symposium, 27-29 Oct. 1982, San Diego, CA. New York (U.S.), Rosenberg et al.: "Optical Fiber Repeatered Transmission Systems Utilizing Saw Filters", pp. 238-246.
British Telecommunications public limited company
Safourek Benedict V.
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