Patents by Inventor Kar Wei Koay

Kar Wei Koay 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).

  • Dynamic head switch timing recalibration apparatus and method
    Patent number: 6917485
    Abstract: An apparatus and method for dynamic head switch timing recalibration are provided. With the apparatus and method, a determination is made as to whether a difference in a reference head switch timing and the head switch timing at a later time is sufficient to meet a certain criteria. If the difference meets the criteria, a recalibration of the head switch timing is performed. For example, in a preferred embodiment, the criteria is a number of address mark (AM) misses during a head switch operation. If this predetermined number of AM misses is detected, then it is determined that a recalibration is necessary since the predetermined number of AM misses is an indication that the head switch timing has changed significantly from the reference head switch timing.
    Type: Grant
    Filed: June 20, 2003
    Date of Patent: July 12, 2005
    Assignee: Seagate Technology LLC
    Inventors: David Louis Schell, Chris Thomas Settje, Steven Alan Koldewyn, Kar Wei Koay, Abhay T. Kataria, Marinko Bosnich, Mike E. Baum