Patents by Inventor Xiaokun L. Chew

Xiaokun L. Chew 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 selecting TPI profile by estimating head geometry
    Patent number: 7688540
    Abstract: A disk drive is disclosed comprising a disk and a head actuated radially over the disk. The head is positioned over a first radial location, and a first data tracks per inch (TPI—1) is selected for data tracks recorded near the first radial location. The head is positioned over a second radial location, and a second data tracks per inch (TPI—2) is selected for data tracks recorded near the second radial location. The head is positioned over a third radial location, and a third data tracks per inch (TPI—3) is selected for data tracks recorded near the third radial location. A geometry of the head is estimated in response to TPI—1, TPI—2 and TPI—3.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: March 30, 2010
    Assignee: Western Digital Technologies, Inc.
    Inventors: Lin Mei, Xiaokun L. Chew, Teik EE Yeo