Disk drive with seek profile selection based on read/write opera

Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head

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Details

360 60, 360 7807, G11B 555

Patent

active

061010650

ABSTRACT:
A method for reducing data access time in a disk drive. The disk drive includes an actuator and a servo controller. The servo controller commands the actuator to perform a seek from a current position to a target position using a profile of command effort to the actuator. The profile comprises an acceleration profile and a deceleration profile. In one aspect, the method includes defining a read profile for a seek used to position the actuator to execute a read command. A write profile is defined for a seek used to position the actuator to execute a write command, the write profile being different from the read profile for a respective seek distance. The read and write seeks are performed using the read profile and the write profile. The average time required for performing a seek command is reduced as a result of the difference between the read profiles and the write profiles.

REFERENCES:
patent: 4937689 (1990-06-01), Seaver et al.
patent: 5150266 (1992-09-01), Albert
patent: 5859742 (1999-01-01), Takaishi
patent: 6002544 (1999-12-01), Yatsu

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