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Improvement of shock sensor sensitivity accuracy on HDD by compensating for temperature

IP.com Disclosure Number: IPCOM000014737D
Original Publication Date: 1999-Oct-01
Included in the Prior Art Database: 2003-Jun-20
Document File: 1 page(s) / 27K

Publishing Venue

IBM

Related People

Kenji Toga: AUTHOR [+2]

Abstract

Disclosed is a technique to cancel the temperature coefficient of a shock sensor in a hard disk drive. A portable hard disk drive has shock detection function in order to protect off-track write in a portable hard disk drive. To detect the shock, a shock sensor is used, however, the sensor has temperature coefficient in sensitivity. To cancel the sensitivity fluctuation, the controller measures temperature and compensate sensor amplifier gain or detection threshold. 1

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  Improvement of shock sensor sensitivity accuracy on HDD by compensating for temperature

Disclosed is a technique to cancel the temperature coefficient of a shock
sensor in a hard disk drive.

A portable hard disk drive has shock detection function in order to protect
off-track write in a portable hard disk drive. To detect the shock, a shock
sensor is used, however, the sensor has temperature coefficient in
sensitivity. To cancel the sensitivity fluctuation, the controller measures
temperature and compensate sensor amplifier gain or detection threshold.

1