Patents by Inventor Douglas A. Hooks

Douglas A. Hooks 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).

  • Patent number: 5761452
    Abstract: An improved bus arbitration system comprising an information bus, first and second bus masters connected to the bus and a bus arbiter for controlling ownership of the bus. The first bus master is adapted to perform speculative pre-fetching and has a first REQ signal for requesting ownership of the bus and an SP signal for indicating when a bus ownership request is for a speculative pre-fetch. The second bus master has a second REQ signal for requesting ownership of the bus. The bus arbiter is configured such that when the first bus master asserts its REQ signal and its SP signal and the second bus master asserts its REQ signal, the bus arbiter assigns higher priority to the second bus master in response to the SP signal.
    Type: Grant
    Filed: March 18, 1996
    Date of Patent: June 2, 1998
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Douglas A. Hooks, Drew J. Dutton
  • Patent number: 5560024
    Abstract: A low power management system including both hardware and software is provided for a battery powered portable computer. The low power management system powers down various sections of the computer when they are not used. The low power management system is controlled by a control program in the microprocessor of the computer. The low power management system includes the capability to turn off clock signals to various sections of the computer based upon demand. Also included is the capability to turn on clock signals based upon demand. The low power management system also includes the capability to turn on the computer upon a press of a key on the computer keyboard. The low power management system monitors software application programs for keyboard activity so as to turn off the microprocessor in the computer in response to a loop looking for a keypress and certain other loops which can be monitored without use of the microprocessor.
    Type: Grant
    Filed: February 1, 1995
    Date of Patent: September 24, 1996
    Assignee: Fujitsu Personal Systems, Inc.
    Inventors: Leroy D. Harper, Grayson C. Schlichting, Douglas A. Hooks, Ian H. S. Cullimore, Gavin A. Bradshaw, Biswa R. Banerjee, John P. Fairbanks, Roderick W. Stone
  • Patent number: 5428790
    Abstract: A low power management system including both hardware and software for a battery powered portable computer. The low power management system powers down various sections of the computer when they are not used. The low power management system is controlled by a control program in the microprocessor of the computer. The low power management system includes the capability to turn off clock signals to various sections of the computer based upon demand. Also included is the capability to turn on clock signals based upon demand. The low power management system also includes the capability to turn on the computer upon a press of a key on the computer keyboard. The low power management system monitors software application programs for keyboard activity so as to turn off the microprocessor in the computer in response to a loop looking for a keypress and certain other loops which can be monitored without use of the microprocessor.
    Type: Grant
    Filed: October 8, 1993
    Date of Patent: June 27, 1995
    Assignee: Fujitsu Personal Systems, Inc.
    Inventors: Leroy D. Harper, Grayson C. Schlichting, Douglas A. Hooks, Ian H. S. Culimore, Gavin A. Bradshaw, Biswa R. Banerjee, John P. Fairbanks, Roderick W. Stone