Data separator

Details Data separator Data separator

1984-02-06

1984-09-18

Ng, Jin F.

Pulse or digital communications

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375118, 307269, 307511, 328 63, 328 72, 328155, 360 51, 377 46, 377 52, H04L 702

Patent

active

044728182

ABSTRACT:
A data separator for providing data and clock information derived from a floppy disk to a controller includes a synthetic oscillator phase-locked loop which adjusts the phase of the derived clock, thereby to tend to position data inputs within the central portion of their associated half-bit slots. The center frequency of the synthetic oscillator may be modified in accordance with prior phase adjustments to compensate for variations in the speed of the floppy disk drive.

REFERENCES:
patent: 3447085 (1969-05-01), De Haas et al.
patent: 3947634 (1976-03-01), Betts
patent: 4316152 (1982-02-01), Meyer
patent: 4373204 (1983-02-01), Brooks
patent: 4385395 (1983-05-01), Tanaka et al.

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