Seek adaptation system in hard disk drives

Details Seek adaptation system in hard disk drives Seek adaptation system in hard disk drives

Filed on

2006-10-25

Date issued

2008-08-12

Examiner

Tzeng, Fred (Department: 2627)

Patent Class

Dynamic magnetic information storage or retrieval

SubClass

Automatic control of a recorder mechanism

SubSubClass

Controlling the head

Type

Reexamination Certificate

Status

active

Patent number

07411761

Description

ABSTRACT:
A hard disk drive with a voice coil motor circuit that provides a current to a voice coil motor to perform a seek routine in a seek time. The disk drive includes a temperature sensor to sense a temperature of the disk drive and a voltage sensor to sense the voltage of the voice coil motor. The circuit adjust the seek time dependent upon the sensed temperature and voltage. By way of example, the circuit will increase the seek time if there is an increase in temperature and/or a decrease in voltage.

REFERENCES:
patent: 5333083 (1994-07-01), Nakano
patent: 6369972 (2002-04-01), Codilian et al.
patent: 6490115 (2002-12-01), Suzuki et al.
patent: 6917486 (2005-07-01), Tanner
patent: 7009806 (2006-03-01), Zayas et al.
patent: 7082009 (2006-07-01), Zayas et al.
patent: 2006/0268449 (2006-11-01), Chu et al.

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