Patents Assigned to Western Digital Corp.
  • Switchable bus termination and address selector
    Patent number: 4920339
    Abstract: A switchable termination module for use with addressable devices on a communication bus has a terminator for each signal transmission path, a signal source, for example a switch for signalling whether termination is desired and a terminator control circuit for engaging and disengaging the terminators in response to the signal from the signal source. The control circuit has a transistor between the source of potential and the terminators to couple the terminators to the transmission paths when termination is desired. The switch which signals whether termination is desired may also be used to select the address for the device.
    Type: Grant
    Filed: January 6, 1989
    Date of Patent: April 24, 1990
    Assignee: Western Digital Corp.
    Inventors: Robert C. Friend, Charles R. Patton, III
  • Data disk defect handling using relocation ID fields
    Patent number: 4914529
    Abstract: The invention provides a method and format for storing a relocation identification block within the data field of a sector having a defect. The relocation identification block provides an address for a replacement sector to be used for data which cannot be stored in the unusable sector.
    Type: Grant
    Filed: July 18, 1988
    Date of Patent: April 3, 1990
    Assignee: Western Digital Corp.
    Inventor: Carl Bonke
  • Storage device
    Patent number: D439249
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: March 20, 2001
    Assignee: Western Digital Corp.
    Inventors: Lester C. Anderson, Hilario P. Agbulos, Jr., Peter F. Schoen, John K. Ramones, Badir M. Mousa, Henry A. Jupille, Daniel Ong Kwang Keen, Tan Kai Song, Michael T. Milo