Method and device for compensating for thermal decay in a magnetic storage device
AssigneeSeagate Technology LLC
InventorJerry Moline
Life of this patent
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Abstract
The present disclosure is directed to systems and methods of compensating for thermal decay of a magnetic data storage medium. In a particular embodiment, the method includes reading a calibration track on a magnetic data storage medium to obtain a first measurement of a track characteristic. The method also includes overwriting the calibration track with a first specific data pattern and reading the calibration track to obtain a second measurement of the track characteristic. The method also includes determining whether a thermal decay rate of the calibration track is acceptable based on the first measurement and the second measurement.
Claims20
A method comprising:
- reading a calibration track on a magnetic data storage medium to obtain a first measurement of a track characteristic;
- overwriting the calibration track with a first specific data pattern;
- reading the calibration track to obtain a second measurement of the track characteristic;
- and
- determining whether a thermal decay rate of the calibration track is acceptable based on the first measurement and the second measurement.
A device comprising:
- a magnetic data storage medium;
- a calibration track on the magnetic data storage medium having a first compensated thermal decay rate;
- non-calibration tracks on the magnetic data storage medium having a second thermal decay rate;
- and
- wherein the first thermal decay rate is less than the second thermal decay rate.
The device of claim 111 further comprising:
- a transducer for reading data from and writing data to the magnetic data storage medium;
- and
- a processor operably programmed to:
- read the calibration track to obtain a first measurement of a track characteristic;
- overwrite the calibration track with a first specific data pattern;
- read the calibration track to obtain a second measurement of the track characteristic;
- calculate a first value based on the second measurement and the first measurement;
- compare the first value to a threshold;
- determine whether a thermal decay of the calibration track is acceptable based on the comparing the first value to a threshold.
A computer-readable medium having instructions for causing a processor to execute a method comprising:
- reading a calibration track on a magnetic data storage medium to obtain a first measurement of a track characteristic;
- overwriting the calibration track with a first specific data pattern;
- reading the calibration track to obtain a second measurement of the track characteristic;
- determining whether a thermal decay of the calibration track is acceptable based on the first measurement and the second measurement.
Dependencies are inferred from the claim text.