Inventors:
Carl R. Messenger - Mission Viejo CA
David D. Nguyen - Fountain Valley CA
Assignee:
Western Digital Technologies, Inc. - Lake Forest CA
International Classification:
G11B 555
US Classification:
360 7804, 360 7809, 360 7807, 360 7806, 360 9702, 360 31, 318634, 318265, 318560, 318561
Abstract:
A controller for a disk drive that accesses a look up table having a plurality of thermally characterized values corresponding to a plurality of seek operations. For each seek operation, the corresponding value is added to a register. The controller decrements the register at a rate that is determined using servo interrupts occurring as a result of the rotation of the disk. When the value of the register exceeds a threshold, the controller adjusts the subsequent seek operation so as to inhibit damage to the voice coil as a result of overheating.