Patents by Inventor Feei Chung

Feei Chung 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).

  • System and method for time varying filter for seek acoustics reduction
    Publication number: 20050141131
    Abstract: A filter is provided to filter the command current during portions of the seek operation. In one embodiment, a low pass filter is used during the early portions of the seek operation to reduce the acoustical clicking and modified filters are used for later portions. In one embodiment, the modified filter arrangement gradually removes the filter by the end of the seek operation. In this way, the filter is not presented in the track following mode.
    Type: Application
    Filed: December 3, 2004
    Publication date: June 30, 2005
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Thorsten Schmidt, Feei Chung
  • Method and apparatus for noise reduction during seeks using signal blending
    Publication number: 20050134996
    Abstract: The blending of control indicators of a non-linear seek mode control and settle mode is done in a transition period between a non-linear seek mode and settle mode of the arm actuator in a hard disk drive. Such a blended transition avoids acoustical clicking that can occur for short distance seeks.
    Type: Application
    Filed: December 14, 2004
    Publication date: June 23, 2005
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventor: Feei Chung