Patents by Inventor Alfredo S. Chu

Alfredo S. Chu 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).

  • Laser temperature calibration in a HAMR device
    Patent number: 9236081
    Abstract: A method includes setting a heat assisted magnetic recording (HAMR) device located in a data storage system having a laser to an operating temperature. A threshold laser current is determined. An optimal laser current is determined. The threshold laser current and the optimal laser current are stored in memory. The steps of determining a threshold laser current, determining an optimal laser current and storing the threshold laser current and the optimal laser current into the calibration table are repeated until acceptable device performance is achieved at more than one operating temperature.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: January 12, 2016
    Assignee: Seagate Technology LLC
    Inventors: Alfredo S. Chu, Jason W. Riddering, Drew M. Mader, Huazhou Lou, Pu-Ling Lu