The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 02, 2018
Filed:
May. 19, 2015
Seagate Technology Llc, Cupertino, CA (US);
Tim Rausch, Farmington, MN (US);
Tatsuya Shimizu, Tokyo, JP;
Wai Yeun Lai, Tokyo, JP;
Kai Chiu Cheung, Tokyo, JP;
Seagate Technology LLC, Cupertino, CA (US);
SAE Magnetics (Hong Kong) Limited, Shatin, N.T., HK;
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.