Patents by Inventor Hien Chu

Hien 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).

  • Disk drive identifying starting track by performing multiple load operations
    Patent number: 7209310
    Abstract: A disk drive is disclosed comprising a disk having a plurality of servo sectors defining a plurality of servo tracks, wherein each servo sector comprises a track address identifying a corresponding servo track. A head is actuated over the disk, and a ramp is positioned near an outer diameter of the disk, wherein an edge of the ramp extends over a plurality of the servo tracks. The head is loaded from the ramp onto the disk, and a track address in at least one of the servo sectors is detected and stored. The process is repeated a number of times, and then a starting track proximate an outer diameter of the disk is identified in response to the detected and stored track addresses.
    Type: Grant
    Filed: July 25, 2005
    Date of Patent: April 24, 2007
    Assignee: Western Digital Technologies, Inc.
    Inventors: Chun Sei Tsai, Ngoc Le, Jenghung Chen, Hien Chu