FLY-HEIGHT MANAGEMENT IN A HARD DISK DRIVE (HDD)
First Claim
Patent Images
1. A hard disk drive (HDD) comprising:
- a first resistive temperature detector (RTD) configured to detect a temperature generated by proximity of a slider and a media, wherein said first RTD is proximate an air bearing surface (ABS) of said slider;
a second RTD configured to detect at least one temperature correlated to a heating of said slider, wherein said second RTD is not required to be proximate said ABS of said slider, anda read/write integrated circuit (IC) configured to determine said fly-height of said slider based on detection of temperatures by said first RTD and said second RTD.
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Abstract
A hard disk drive (HDD) including a first resistive temperature detector (RTD) configured to detect a temperature generated by proximity of a slider and a media. The first RTD is proximate an air bearing surface (ABS) of the slider. The HDD also includes a second RTD configured to detect at least one temperature correlated to a fly-height of the slider. The second RTD is not required to be proximate the ABS of the slider. HDD also includes a read/write integrated circuit (IC) configured to determine the fly-height of the slider based on detection of temperatures by the first RTD and the second RTD.
46 Citations
20 Claims
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1. A hard disk drive (HDD) comprising:
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a first resistive temperature detector (RTD) configured to detect a temperature generated by proximity of a slider and a media, wherein said first RTD is proximate an air bearing surface (ABS) of said slider; a second RTD configured to detect at least one temperature correlated to a heating of said slider, wherein said second RTD is not required to be proximate said ABS of said slider, and a read/write integrated circuit (IC) configured to determine said fly-height of said slider based on detection of temperatures by said first RTD and said second RTD. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A slider in a hard disk drive (HDD), comprising:
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a first resistive temperature detector (RTD) configured to detect a temperature generated by slider contact with a media, wherein said first RTD is proximate an air bearing surface (ABS) of a slider; and a second RTD configured to detect at least one temperature correlated to a fly-height of said slider, wherein said second RTD is not required to be proximate said ABS of said slider. - View Dependent Claims (9, 10, 11)
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12. A method for fly-height management in a hard disk drive (HDD), said method comprising:
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detecting a change in resistance of a first resistive temperature detector (RTD) in response to a change of temperature of said first RTD generated by slider fly-height changes over a media, wherein said first RTD is proximate an air bearing surface (ABS) of a slider; detecting a change in resistance of a second RTD in response to a change in temperature of said second RTD, wherein said second RTD is not required to be proximate said ABS; and determining a fly-height of said slider based on said change of resistance of said first RTD and said change of resistance of said second RTD. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification