Patents by Inventor Klan Keong Ooi

Klan Keong Ooi 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).

  • Prediction and cancellation of cage frequency in a disc drive
    Publication number: 20030206363
    Abstract: A method for writing servo information to a disc rotatably mounted to a spindle motor. A measured cage frequency is obtained from a written reference track, from which an actual cage frequency is predicted. The predicted cage frequency is then used to derive compensatedposition commands. During a servo write interval, the compensated position commands are used to control the head such that the head follows the disc movements caused by the cage frequency.
    Type: Application
    Filed: April 27, 2001
    Publication date: November 6, 2003
    Inventors: Shuang Quan Min, Klan Keong Ooi, Ricky WeiWatt Yeo, Chiap Heok Ang, Ming Zhong Ding, Beng Wee Quak