| 摘要 |
A disk drive having multi-burst servo wedges and single-burst servo wedges for improving shock performance with less impact on data space than otherwise possible and a method of increasing the servo sampling rate for effecting reasonable shock detection in such a disk drive using such multi-burst and single-burst servo wedges. The additional single-burst servo wedges may contain certain desired servo wedge fields, or may consist of just the servo burst itself. In operation, the multi-burst and single servo wedges are processed in series. The multi-burst servo wedge is read to develop a position error signal and control the head, and the single-burst servo wedge is read, the single burst amplitude is compared to one of the plurality of burst amplitudes and, if the single burst amplitude differs by more than a predetermined threshold amount from the one previous burst amplitudes, the system aborts a data write operation.
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