Method and apparatus for correcting for random errors in timing

Details Method and apparatus for correcting for random errors in timing Method and apparatus for correcting for random errors in timing

1999-05-21

2000-06-13

Kim, W. Chris

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data clocking

360 75, G11B 509, G11B 2102

Patent

active

060756683

ABSTRACT:
Improvements in placement of timing patterns in self-servowriting include correcting for random errors. Random errors may be caused by variations in disk velocity and therefore, one technique for correcting for random errors includes reducing velocity jitter. Additionally, random errors can be corrected by improving interval control during the propagation of trigger patterns used in writing timing information on storage media. Further, random errors, in the writing of timing information, can be corrected during a single revolution of the storage media. This eliminates additional rotations, thereby providing a large capital cost savings.

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"Regenerative Clock Technique For Servo Track Writers," IBM Technical Disclosure Bulletin, vol. 33 No. 5, p. 310-311 (Oct. 1990).

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