Patent ID: 6392831
Filing Date: 2002-05-21
Classification: G11B

Abstract:
A method for identifying a defective servo information element in a track on a disc to prevent processing of erroneous servo information by a servo system of a disc drive system during normal operation, the method comprising the steps of:(a) reading servo information elements from the track on the disc to receive first servo data status values associated with the servo information elements; (b) if the first servo data status value associated with a first servo information element fails to satisfy a first predetermined criterion, identifying the first servo information element as a suspected servo information element; (c) recording location and error type information associated with the suspected servo information element; (d) masking a second servo information element; (e) rereading the servo information elements from the track on the disc to receive second servo data status values for the servo information elements; and (f) if the second servo data status value associated with the suspected servo information element satisfies the first predetermined criterion, identifying the second servo information element as the defective servo information element.