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US 9,741,364 B2Granted
Laser power optimization for heat assisted interlaced magnetic recording
AssigneeSeagate Technology LLC
InventorsTim Rausch, Minjie Ma, Kaizhong Gao, Edward Gage
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Abstract
A storage device disclosed herein stores data on a storage media using interlaced magnetic recording (IMR) and it includes a storage controller configured to determine power levels applied to the power source such that power levels applied to heat various tracks can be different from each other. An implementation of the storage device determines the track density, linear densities and power levels for even and odd tracks in IMR HAMR for the storage media.
Claims19
A storage device, comprising:
- a storage medium configured to store data using interlaced magnetic recording (IMR) having at least two different track densities (kilotracks per inch (ktpi));
- a power source configured to heat the storage medium;
- and
- a storage device controller configured to determine different linear densities (kilobits per inch (kbpij)) for tracks j with different track densities (ktpij), the determination based on satisfaction of a bit error rate (BER) threshold.
1 more element
A method comprising:
- heating a storage medium using a laser power source, the storage medium configured to store data using interlaced magnetic recording (IMR) having at least two different track densities (kilotracks per inch (ktpi));
- and
- determining different linear densities (kilobits per inch (kbpi)) for tracks with different track densities (ktpi) for the storage medium, the determination based on satisfaction of a bit error rate (BER) threshold.
Dependencies are inferred from the claim text.