Heat assisted magnetic recording withinterlaced high-power heated and low-power heated tracks
First Claim
1. A data storage system comprising:
- a recording media including recording tracks;
a head situated to write to the media; and
a radiation source situated to heat a first track with a first power, a second track with a second power, and a third track with a third power, wherein the second track is situated between the first track and the third track, and wherein the first power and the third power are greater than the second power.
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Abstract
A method, system and apparatus are described for increasing areal density and track density for a data storage system. Media with high magneto-crystalline anisotropy is heated locally during writing, utilizing heating methods such as heat-assisted magnetic recording, energy assisted magnetic recording, thermally assisted recording. In an aspect, high-power heated tracks of a magnetic recording layer are heated and written, and then low-power heated tracks are heated and written. The high-power heated tracks and the low-power heated tracks are interlaced, such that a low-power heated track is situated between two high-power heated tracks. In an aspect, media rewriting speed is increased. In an aspect, the high-power heated tracks and low-power heated tracks are written to at substantially the same data rate and linear density. In an aspect, any erasure of any portion of the high-power heated tracks from heating the low-power heated tracks is avoided, or minimized.
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Citations
21 Claims
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1. A data storage system comprising:
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a recording media including recording tracks; a head situated to write to the media; and a radiation source situated to heat a first track with a first power, a second track with a second power, and a third track with a third power, wherein the second track is situated between the first track and the third track, and wherein the first power and the third power are greater than the second power. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for writing to a data storage device, the data storage device including a write head, a radiation source, and recording media, wherein the radiation source is situated to heat tracks of the recording media, the method comprising:
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heating a first track, via the radiation source, with a first power; writing to the first track; heating a third track, via the radiation source, with a third power; writing to the third track; heating a second track, via the radiation source, with a second power; and writing to the second track;
wherein;the first power and the third power are a higher power than the second power; and the second track is situated between the first track and the third track. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for writing to a data storage device, the data storage device including a write head, a radiation source, and recording media, wherein the radiation source is situated to heat tracks of the recording media, the method comprising:
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heating a first track, via the radiation source, with a first power; writing to the first track; heating a third track, via the radiation source, with a third power; and writing to the third track;
wherein;the third track is positioned a predetermined distance from the first track, sufficient for heating a second track with a second power and writing to the second track, such that the second power does not erase or minimizes any erasure of at least one of the first track and the third track; the first power and the third power are a higher power than the second power; and the second track is situated between the first track and the third track. - View Dependent Claims (20, 21)
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Specification