Patents by Inventor Joseph S-T Tung

Joseph S-T Tung 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).

  • Staggered seeking method for disk drive sector servo
    Patent number: 4924160
    Abstract: A sampled data read/write head positioning system for a disk drive having a sector servo overcomes the low bandwidth constraints of feedback position samplers. The system includes controlled acceleration and controlled deceleration of the read/write heads while seeking a track. In order to avoid missing track addresses, the sectors on each disk surface are staggered (offset) along each track from the corresponding sectors on the other disk surfaces, and each read/write head is used to find a particular track by sequentially switching the read/write heads while seeking.
    Type: Grant
    Filed: January 9, 1989
    Date of Patent: May 8, 1990
    Assignee: Alps Electric Co., Ltd.
    Inventor: Joseph S-T Tung