Patents by Inventor Eng Hong Ong

Eng Hong Ong 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).

  • Active control system and method for reducing disk fluttering induced track misregistrations
    Patent number: 6888694
    Abstract: The present invention relates to controlling an actuator for positioning a read/write head in storage devices such as disk drives. More specifically, the invention relates to using a sensor to detect the disk vibration amplitude perpendicular to the disk surface, and using feed forward control to cancel or counteract the tendency of the read/write head to deviate off-track due to disk vibration. Various approaches are proposed to detect the disk vertical vibration.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: May 3, 2005
    Assignee: Agency for Science, Technology and Research
    Inventors: Guoxiao Guo, Jingliang Zhang, Zhimin He, Eng Hong Ong
  • Active control system and method for reducing disk fluttering induced track misregistrations
    Publication number: 20030133218
    Abstract: The present invention relates to controlling an actuator for positioning a read/write head in storage devices such as disk drives. More specifically, the invention relates to using a sensor to detect the disk vibration amplitude perpendicular to the disk surface, and using feed forward control to cancel or counteract the tendency of the read/write head to deviate off-track due to disk vibration. Various approaches are proposed to detect the disk vertical vibration.
    Type: Application
    Filed: June 4, 2002
    Publication date: July 17, 2003
    Applicant: Data Storage Institute
    Inventors: Guoxiao Guo, Jingliang Zhang, Zhimin He, Eng Hong Ong