Systems for WORF improvement

Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head

Reexamination Certificate

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Details

C360S048000, C360S077080

Reexamination Certificate

active

06995942

ABSTRACT:
Wedge Offset Reduction Field (WORF) data can be used to reduce the effective written-in runout of a servo pattern. In order to prevent the WORF data from being applied to an improper portion of the servo pattern, the identification of a quadrant associated with that WORF data can be stored with the WORF data. For example, the servo pattern of a hard disk can contain a number of servo burst boundaries. In order to ensure that the WORF data is applied to the proper burst boundary, the identity of a quadrant associated with that boundary can be written into the servo wedge along with the WORF data. This description is not intended to be a complete description of, or limit the scope of, the invention. Other features, aspects, and objects of the invention can be obtained from a review of the specification, the figures, and the claims.

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patent: 61211814 (1986-09-01), None
patent: 63025803 (1988-02-01), None
patent: 10334402 (1998-12-01), None

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