Disk drive data synchronizer with window shift synthesis

Details Disk drive data synchronizer with window shift synthesis Disk drive data synchronizer with window shift synthesis

1991-05-03

1993-05-18

Mottola, Steven

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data clocking

360 44, G11B 509

Patent

active

052126013

ABSTRACT:
A phase-locked system for recovering data from a disk drive includes a phase detector for signalling the difference in phase between incoming delayed data pulses and a phase detection window clock signal. The phase detection window clock signal is derived from one output of a phase shifter driven by the output of a voltage-controlled oscillator whose frequency is controlled by the phase detector. The phase-locked loop is completed by comparing the phase detection window clock signal output of the phase shifter with the incoming delayed data pulses in the phase detector. Data detection window clock pulses, defining time windows in which the delayed data pulses are discerned, are produced at a second output of the phase shifter. The phase shifter produces a delay variable in precise increments over a wide range, causing a variable phase relationship between the time windows and the delayed data pulses that are to be discerned therein.

REFERENCES:
patent: 4996608 (1991-02-01), Widney
patent: 5107379 (1992-04-01), Huber
Western Digital Corporation Product Specification; WD10C20-05; Self-Adjusting Data Separator.
Western Digital Corporation Product Specification; WD10C21A; Self-Adusting Data Separator, published 1988.
Western Digital Corporation Product Specification; WD10C20B; Self-Adjusting Data Separator, published 1987.
Western Digital Corporation Product Specification; WD10C22B; Self-Adjusting Data Separator, published 1988.

Affiliated with

Also associated with

Rating

Disk drive data synchronizer with window shift synthesis does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Disk drive data synchronizer with window shift synthesis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Disk drive data synchronizer with window shift synthesis will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-808016