Patents Represented by Attorney, Agent or Law Firm Min Xu
  • Patent number: 6195775
    Abstract: A boundary configuration (Common Input/output CIO) for Generalized Scan Designs (GSD) in a single clock chip design includes at least one generalized scan design internal latch; a boundary scan clock input to the internal latch; an input/output cell connected to the internal latch; and at least one control line between the internal latch and the input/output cell. The CIO GSD is arranged and configured to operate in various modes including a function mode, a RUNBIST/INTEST/LBIST mode, an EXTEST/WIRETEST mode, a SAMPLE/PRELOAD mode, etc. In a different version, a MUX controller is connected to the internal latch. The MUX controller selects data from one of at least two control lines and sending the selected data to at least one internal logic unit of the chip for a test operation.
    Type: Grant
    Filed: September 2, 1998
    Date of Patent: February 27, 2001
    Assignee: International Business Machines Corporation
    Inventors: Steven Michael Douskey, Paul Allen Ganfield, Daniel Guy Young
  • Patent number: 5787292
    Abstract: A multiple frequency zoned disk storage device in which data is read from and/or written to the disk at two or more discrete disk velocities is disclosed. The disk storage device includes a low power mode where information is read/written from/to the disk while the disk velocity is reduced to conserve power. The allocation track locations into zones on the drive reduces the number of zone bit frequencies the storage device must handle.
    Type: Grant
    Filed: April 1, 1996
    Date of Patent: July 28, 1998
    Assignee: International Business Machines Corporation
    Inventors: Hal Hijalmar Ottesen, Gordon J. Smith