Patents by Inventor Wai Yeun Lai

Wai Yeun Lai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Procedure for setting laser and heater power in HAMR device
    Patent number: 10090011
    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.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: October 2, 2018
    Assignees: Seagate Technology LLC, SAE Magnetics (Hong Kong) Limited
    Inventors: Tim Rausch, Tatsuya Shimizu, Wai Yeun Lai, Kai Chiu Cheung