Patent ID: 6389571
Filing Date: 2002-05-14
Classification: G11B

Abstract:
A thermal asperity pointer processing apparatus for generating erasure locations from a thermal asperity signal, the thermal asperity signal indicating an error burst in an interleaved data sector, the apparatus comprising:a thermal asperity pointer recorder adapted to receive a thermal asperity signal and being configured to generate a thermal asperity event information associated with the thermal asperity signal, the thermal asperity event information including a thermal asperity duration, a starting interleave number, and a starting interleave address of the thermal asperity signal in the interleaved data sector; a storage unit configured to receive the thermal asperity event information from the thermal asperity pointer recorder, the storage unit being configured in a single-port read and a single-port write register file structure; a counter associated with the storage unit, the counter configured to receive read/write enable signals to track a number of thermal asperity detect items; and a thermal asperity pointer processing unit coupled to receive the thermal asperity event information from the storage unit, the thermal asperity pointer processing unit being adapted to generate the erasure locations for interleaves corresponding to the error burst in the data sector.