Electronic system with unload management mechanism and method of operation thereof
US-9208808-B1 · Dec 8, 2015 · US
Data storage device generating an operating seek time profile as a function of a base seek time profile
US2016104504A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016104504-A1 |
| Application number | US-201514706881-A |
| Country | US |
| Kind code | A1 |
| Filing date | May 7, 2015 |
| Priority date | Oct 9, 2014 |
| Publication date | Apr 14, 2016 |
| Grant date | — |
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Abstract
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A data storage device is disclosed comprising a head actuated over a disk comprising a plurality of tracks. An operating seek time profile is generated as a function of a base seek time profile, wherein the seek time profiles define a seek time to seek the head radially over the disk by a seek length. A seek operation is executed to seek the head by a target seek length by at least generating a target seek time based on the target seek length and the operating seek time profile, and seeking the head the target seek length based on the target seek time.
First claim
Opening claim text (preview).
What is claimed is: 1 . A data storage device comprising: a disk comprising a plurality of tracks; a head actuated over the disk; and control circuitry configured to: generate an operating seek time profile as a function of a base seek time profile, wherein the seek time profiles define a seek time to seek the head radially over the disk by a seek length; and execute a seek operation to seek the head by a target seek length by at least: generating a target seek time based on the target seek length and the operating seek time profile; and seeking the head the target seek length based on the target seek time. 2 . The data storage device as recited in claim 1 , wherein the function comprises an offset added to each seek time in the base seek time profile. 3 . The data storage device as recited in claim 1 , wherein the function comprises a scalar for scaling each seek time in the base seek time profile. 4 . The data storage device as recited in claim 1 , wherein the function comprises a complex function based on the seek lengths and corresponding seek times in the base seek time profile. 5 . The data storage device as recited in claim 1 , wherein the control circuitry is further configured to adjust the operating seek time profile as a function of a runtime parameter. 6 . The data storage device as recited in claim 5 , wherein the runtime parameter comprises a workload of the data storage device. 7 . The data storage device as recited in claim 1 , wherein the control circuitry is further configured to execute the seek operation by: measuring a velocity of the head over the disk during the seek operation; generating a coast velocity based on the measured velocity of the head; and adjusting a control signal applied to the actuator based on the measured velocity and the coast velocity. 8 . A method of operating a data storage device, the method comprising: generating an operating seek time profile as a function of a base seek time profile, wherein the seek time profiles define a seek time to seek a head radially over a disk by a seek length; and executing a seek operation to seek the head by a target seek length by at least: generating a target seek time based on the target seek length and the operating seek time profile; and seeking the head the target seek length based on the target seek time. 9 . The method as recited in claim 8 , wherein the function comprises an offset added to each seek time in the base seek time profile. 10 . The method as recited in claim 8 , wherein the function comprises a scalar for scaling each seek time in the base seek time profile. 11 . The data storage device as recited in claim 8 , wherein the function comprises a complex function based on the seek lengths and corresponding seek times in the base seek time profile. 12 . The method as recited in claim 8 , further comprising adjusting the operating seek time profile as a function of a runtime parameter. 13 . The method as recited in claim 12 , wherein the runtime parameter comprises a workload of the data storage device. 14 . The method as recited in claim 8 , further comprising executing the seek operation by: measuring a velocity of the head over the disk during the seek operation; generating a coast velocity based on the measured velocity of the head; and adjusting a control signal applied to the actuator based on the measured velocity and the coast velocity.
Assignees
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Classifications
- G11B5/5547Primary
"Seek" control and circuits therefor (G11B5/5556 takes precedence) · CPC title
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- What does patent US2016104504A1 cover?
- A data storage device is disclosed comprising a head actuated over a disk comprising a plurality of tracks. An operating seek time profile is generated as a function of a base seek time profile, wherein the seek time profiles define a seek time to seek the head radially over the disk by a seek length. A seek operation is executed to seek the head by a target seek length by at least generating a…
- Who is the assignee on this patent?
- Western Digital Tech Inc
- What technology area does this patent fall under?
- Primary CPC classification G11B5/5547. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Thu Apr 14 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).