Data storage drive pressure sensing using a head temperature sensor and a head heater
AssigneeSeagate Technology LLC
InventorsHuazhou Lou, YiMin Niu, Eric John McCalla, Dipeshkumar J. Purani
Life of this patent
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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.
Claims20
A data storage drive, comprising:
- a rotatable data storage medium;
- a head communicatively couplable to the data storage medium, the head comprising a temperature sensor and a heater;
- a ramp for supporting the head when the head is moved away from the data storage medium;
- and
- a controller configured to obtain first temperature sensor measurement values for different head heater power settings when the data storage medium is rotating and the head is positioned on the ramp, and to determine an internal pressure of the data storage drive as a function of the first temperature sensor measurement values.
A method of measuring an internal pressure of a data storage drive, the method comprising:
- positioning a head, which comprises a temperature sensor and a heater and that is communicatively couplable to a data storage medium, on a ramp, wherein the head, the data storage medium and the ramp are part of the data storage drive;
- and
- obtaining first temperature sensor measurement values for different head heater power settings when the data storage medium is rotating and the head is positioned on the ramp;
- and
- determining the internal pressure of the data storage drive as a function of the first temperature sensor measurement values.
A data storage drive, comprising:
- a rotatable data storage medium;
- a head communicatively couplable to the data storage medium, the head comprising a temperature sensor and a heater;
- a ramp for supporting the head when the head is moved away from the data storage medium;
- and
- a controller configured to obtain first temperature sensor measurement values for different head heater power settings when the head is positioned on the ramp, and to determine an internal pressure of the data storage drive as a function of the first temperature sensor measurement values.
Dependencies are inferred from the claim text.