公开(公告)号：US20190019531A1

公开(公告)日：2019-01-17

申请号：US16136552

申请日：2018-09-20

Applicant: Seagate Technology LLC

Inventor： Tim Rausch ,  Tatsuya Shimizu ,  Wai Yuen Lai ,  Kai Chiu Cheung

IPC: G11B5/60 ,  G11B5/00

CPC classification number: G11B5/607 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A heater power of a heat-assisted magnetic recording head is set based on an initial head-medium clearance estimate in response to the heater power. For a plurality of iterations, an optimum laser power of the recording head is determined and a heater power is set for a next iteration that results in an optimum heater power for the optimum laser power. If differences in the heater and laser powers between two subsequent iterations are below thresholds, the iterations are stopped and the optimum heater power and the optimum laser power for one of the subsequent iterations are used as an operational heater power and an operational laser power.

公开(公告)号：US10395683B2

公开(公告)日：2019-08-27

申请号：US16136552

申请日：2018-09-20

Applicant: Seagate Technology LLC

Inventor： Tim Rausch ,  Tatsuya Shimizu ,  Wai Yuen Lai ,  Kai Chiu Cheung

IPC: G11B5/60 ,  G11B5/00

Abstract: A heater power of a heat-assisted magnetic recording head is set based on an initial head-medium clearance estimate in response to the heater power. For a plurality of iterations, an optimum laser power of the recording head is determined and a heater power is set for a next iteration that results in an optimum heater power for the optimum laser power. If differences in the heater and laser powers between two subsequent iterations are below thresholds, the iterations are stopped and the optimum heater power and the optimum laser power for one of the subsequent iterations are used as an operational heater power and an operational laser power.

公开(公告)号：US10090011B2

公开(公告)日：2018-10-02

申请号：US14716148

申请日：2015-05-19

Applicant: Seagate Technology LLC

Inventor： Tim Rausch ,  Tatsuya Shimizu ,  Wai Yeun Lai ,  Kai Chiu Cheung

IPC: G11B5/60 ,  G11B5/00

Abstract: A heater power of a heat-assisted magnetic recording head is set to an initial power to induce an initial head-medium clearance. For a plurality of iterations, a heater power at an optimum laser power is determined that achieve a target clearance. If differences in the heater power and optimum laser power between the two subsequent iterations are below a threshold, the iterations are stopped and the heater power and the optimum laser power for one of the two subsequent iterations is used as an operational heater power and laser power for the heat-assisted magnetic recording head.

公开(公告)号：US20160343395A1

公开(公告)日：2016-11-24

申请号：US14716148

申请日：2015-05-19

Applicant: Seagate Technology LLC

Inventor： Tim Rausch ,  Tatsuya Shimizu ,  Wai Yeon Lai ,  Kai Chiu Cheung

IPC: G11B7/1263 ,  G11B5/60

CPC classification number: G11B5/607 ,  G11B5/6088 ,  G11B2005/0021

Abstract: A heater power of a heat-assisted magnetic recording head is set to an initial power to induce an initial head-medium clearance. For a plurality of iterations, a heater power at an optimum laser power is determined that achieve a target clearance. If differences in the heater power and optimum laser power between the two subsequent iterations are below a threshold, the iterations are stopped and the heater power and the optimum laser power for one of the two subsequent iterations is used as an operational heater power and laser power for the heat-assisted magnetic recording head.

Abstract translation: 将热辅助磁记录头的加热器功率设定为初始功率以引起初始头 - 介质间隙。 对于多次迭代，确定达到目标间隙的最佳激光功率的加热器功率。 如果加热器功率和两次后续迭代之间的最佳激光功率的差异低于阈值，则停止迭代，并且将两个后续迭代之一的加热器功率和最佳激光功率用作操作加热器功率和激光功率 用于热辅助磁记录头。