Apparatus for reproducing a digital signal

Details Apparatus for reproducing a digital signal Apparatus for reproducing a digital signal

1986-04-22

1988-04-12

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data clocking

375120, G11B 509, H03D 324

Patent

active

047378662

ABSTRACT:
Apparatus for reproducing digital signals which includes a phase locked loop circuit for generating a clock signal from a reproduced signal. The level of the reproduced signal is detected and the feedback loop of the phase locked looped circuit is controlled by the detected output such that when the reproduced signal is intermittently supplied to the phase locked loop circuit and has a burst-shape the oscillator within the phase locked loop circuit stably oscillates.

REFERENCES:
patent: 3328521 (1967-06-01), Moskovitz
patent: 3528026 (1970-09-01), Groendycke
patent: 3908115 (1975-09-01), Waggener
patent: 4137504 (1979-01-01), Simmons
patent: 4371975 (1983-02-01), Dugan
patent: 4466110 (1984-08-01), Kizaki et al.
patent: 4561101 (1985-12-01), Pinsard et al.
patent: 4607729 (1986-08-01), Smidth
"Read Data Gate Generator", by C. Hollstein, Jr., IBM TDB, vol. 12, #12, 5/70.
"RCA Solid State Europe Databook Series", (SSD 202), pp. 233-248, 1972.
"Achieving Fast Sync with Minimum Transient for a Particular Phase Discriminator"--by D. Malone, IBM TDB, vol. 16, #9, 2/74.

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