| 摘要 |
An apparatus and method are disclosed for optimizing write performance of a disc drive through the use of write thresholds that are adaptive by head and by disc location. The disc drive has a head which is controllably positionable adjacent each of a plurality of nominally concentric tracks defined on a rotatable disc, which selectively magnetizes the tracks to write data to the tracks. A servo circuit of the disc drive controls the position of the head and prevents the head from writing data to the tracks until the head is positioned within write thresholds which are separately defined for each of the tracks. The write thresholds for each of the tracks are stored in memory and accessed by a digital signal processor of the servo circuit at the commencement of each write operation by the disc drive.
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