Disk drive using a timer to arbitrate periodic serial...

Details Disk drive using a timer to arbitrate periodic serial... Disk drive using a timer to arbitrate periodic serial...

2006-09-12

2006-09-12

Young, Wayne (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

C360S075000, C360S077020

Reexamination Certificate

active

07106537

ABSTRACT:
A disk drive is disclosed comprising a microprocessor and a power driver for generating at least one actuator signal applied to the VCM actuator, wherein a serial communication circuit is used to communicate with the power driver. At least one control component periodically generates a control signal, wherein the control signal is transmitted at a substantially constant periodic interval using the serial communication circuit, and a timer times the periodic interval. A job queue controller queues and arbitrates serial communication requests to access the power driver using the serial communication circuit. The serial communication requests include a request to transmit the control signal and requests generated by the microprocessor. The job queue controller services a communication request generated by the microprocessor if the communication request can be serviced before the timer expires.

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