Data storage drive pressure sensing using a head temperature sensor and a head heater
US11468918B1 · kind B1 · utility
0Cited by
7References
20Claims
0Family size
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Key dates
| Filing date | May 17, 2021 |
| Grant date | Oct 11, 2022 |
| Priority date | — |
| Expiry date | May 17, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B23/021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data storage drive includes a rotatable data storage medium, and a head communicatively couplable to the data storage medium. The head includes a temperature sensor and a heater. The data storage drive also includes a ramp for supporting the head when the head is moved away from the data storage medium, and a controller. The controller is configured to obtain first temperature sensor measurement values for different head heater power settings when the head is positioned on the ramp, and is configured to determine an internal pressure of the data storage drive as a function of the first temperature sensor measurement values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.