Trigger pattern detection method and apparatus

Details Trigger pattern detection method and apparatus Trigger pattern detection method and apparatus

1997-07-10

2000-08-08

Huber, Paul W.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data clocking

360 31, 369 47, G11B 509

Patent

active

061010553

ABSTRACT:
Improvements in placement of timing patterns in self-servowriting include detecting and correcting for media defects. A detector is used to detect whether a trigger pattern is within an expected location on the storage medium. If the trigger pattern is not detected, then a physical defect may be present. Thus, in one example, a false trigger pattern is generated. Additionally, a determination is made as to whether a trigger pattern is within an expected trigger pattern region. When the trigger pattern is not within the expected range, then a valid interval window may be modified to adjust the expected trigger pattern region.

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