公开(公告)号：US20170330591A1

公开(公告)日：2017-11-16

申请号：US15154010

申请日：2016-05-13

Applicant: Seagate Technology LLC

Inventor： Steven Granz ,  Edward Gage ,  Alfredo Chu ,  Wenzhong Zhu

IPC: G11B7/1263 ,  G11B7/126 ,  G11B20/12 ,  G11B5/60 ,  G11B7/1267 ,  G11B5/00

CPC classification number: G11B7/1263 ,  G11B5/6088 ,  G11B7/126 ,  G11B7/1267 ,  G11B20/1217 ,  G11B2005/0021 ,  G11B2020/1238

Abstract: A storage device includes a storage controller configured to operate a heat-assisted magnetic recording head to write data to a band of consecutive data tracks in a consecutive track order while selectively alternating a power level of the heat source when writing to some data tracks of the band.

公开(公告)号：US20150380040A1

公开(公告)日：2015-12-31

申请号：US14852755

申请日：2015-09-14

Applicant: Seagate Technology LLC

Inventor： Alfredo Chu ,  Kenneth Arthur Haapala ,  Paul William Burnett ,  Siew Kin Chow

IPC: G11B7/1267 ,  G11B5/09

CPC classification number: G11B13/08 ,  G11B5/09 ,  G11B5/314 ,  G11B5/4866 ,  G11B5/6088 ,  G11B7/1263 ,  G11B7/1267 ,  G11B2005/0021

Abstract: A system may have a data storage medium that contains at least one data bit that is accessed by a transducing head that has a near-field transducer. A controller can be connected to the transducing head and store a plurality of near-field transducer operating currents in a memory. The controller may identify a change in efficiency of the near-field transducer from the plurality of near-field transducer operating currents.

公开(公告)号：US09396750B2

公开(公告)日：2016-07-19

申请号：US14852755

申请日：2015-09-14

Applicant: Seagate Technology LLC

Inventor： Alfredo Chu ,  Kenneth Arthur Haapala ,  Paul William Burnett ,  Siew Kin Chow

IPC: G11B11/00 ,  G11B13/08 ,  G11B7/1267 ,  G11B7/1263 ,  G11B5/48 ,  G11B5/60 ,  G11B5/31 ,  G11B5/09 ,  G11B5/00

CPC classification number: G11B13/08 ,  G11B5/09 ,  G11B5/314 ,  G11B5/4866 ,  G11B5/6088 ,  G11B7/1263 ,  G11B7/1267 ,  G11B2005/0021

Abstract: A system may have a data storage medium that contains at least one data bit that is accessed by a transducing head that has a near-field transducer. A controller can be connected to the transducing head and store a plurality of near-field transducer operating currents in a memory. The controller may identify a change in efficiency of the near-field transducer from the plurality of near-field transducer operating currents.

公开(公告)号：US20180047422A1

公开(公告)日：2018-02-15

申请号：US15795044

申请日：2017-10-26

Applicant: Seagate Technology LLC

Inventor： Steven Granz ,  Edward Gage ,  Alfredo Chu ,  Wenzhong Zhu

IPC: G11B7/1263 ,  G11B20/12 ,  G11B7/126 ,  G11B5/00 ,  G11B5/60 ,  G11B7/1267

CPC classification number: G11B7/1263 ,  G11B5/6088 ,  G11B7/126 ,  G11B7/1267 ,  G11B20/1217 ,  G11B2005/0021 ,  G11B2020/1238

Abstract: A storage device includes a storage controller configured to operate a heat-assisted magnetic recording head to write data to a band of consecutive data tracks in a consecutive track order while selectively alternating a power level of the heat source when writing to some data tracks of the band.

公开(公告)号：US10008231B2

公开(公告)日：2018-06-26

申请号：US15795044

申请日：2017-10-26

Applicant: Seagate Technology LLC

Inventor： Steven Granz ,  Edward Gage ,  Alfredo Chu ,  Wenzhong Zhu

IPC: G11B11/00 ,  G11B7/1263 ,  G11B7/126 ,  G11B5/60 ,  G11B7/1267 ,  G11B20/12 ,  G11B5/00

CPC classification number: G11B7/1263 ,  G11B5/012 ,  G11B5/6088 ,  G11B7/126 ,  G11B7/1267 ,  G11B20/1217 ,  G11B2005/0021 ,  G11B2020/1238

Abstract: A storage device includes a storage controller configured to operate a heat-assisted magnetic recording head to write data to a band of consecutive data tracks in a consecutive track order while selectively alternating a power level of the heat source when writing to some data tracks of the band.

公开(公告)号：US09502061B1

公开(公告)日：2016-11-22

申请号：US14846074

申请日：2015-09-04

Applicant: Seagate Technology LLC

Inventor： Wenzhong Zhu ,  Alfredo Chu ,  SiewKin Chow

IPC: G11B5/55 ,  G11B20/10 ,  G11B5/00

CPC classification number: G11B5/5547 ,  G11B5/455 ,  G11B20/10453 ,  G11B2005/001 ,  G11B2005/0021 ,  G11B2220/2525

Abstract: Systems, devices, processes, and methods of optimizing a data storage device based on adjacent track interference (ATI) are presented. ATI can be detected by writing a specific track of a disc a number of times and measuring a bit error rate (BER) of an adjacent track. In addition, more accurate in-field simulations of ATI can be achieved by seeking to another track, such as an adjacent track, in-between each write to the specific track. Further, in a heat-assisted magnetic recording (HAMR) device, a laser bias control can be implemented during at least one of the seeks to calibrate a laser in-between each write. Even further, the seeks may be anticipatory track seeks (ATS).

Abstract translation: 提出了基于相邻轨道干扰（ATI）优化数据存储设备的系统，设备，过程和方法。 可以通过多次写入盘的特定轨道并测量相邻轨道的误码率（BER）来检测ATI。 此外，可以通过在每次写入特定轨道之间寻找另一轨道（例如相邻轨道）来实现ATI的更准确的现场模拟。 此外，在热辅助磁记录（HAMR）装置中，可以在寻求在每次写入之间校准激光的至少一个中实现激光偏置控制。 此外，寻求可能是预期的追踪追踪（ATS）。