Patents by Inventor Philip John Joseph WRIGHT

Philip John Joseph WRIGHT 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).

  • Watchdog timer hierarchy
    Patent number: 10942798
    Abstract: In one example of the technology, via a first independent execution environment of a set of independent execution environments in an integrated circuit, a first watchdog timer is caused to reset on a periodic basis. The set of independent execution environments is configured to have a defense-in-depth hierarchy. The set of independent execution environments includes a first independent execution environment and a second independent execution environment. The first independent execution environment is a most trusted execution environment on the integrated circuit. Via the second independent execution environment: a second watchdog timer is periodically caused to reset on a periodic basis. In response to the second watchdog timer timing out, an interrupt is communicated from the second watchdog timer to the first independent execution environment. In response to the first watchdog timer timing out, at least a portion of the integrated circuit is reset.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: March 9, 2021
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: George Thomas Letey, Douglas L. Stiles, Edmund B. Nightingale, Stephen E. Hodges, Philip John Joseph Wright
  • WATCHDOG TIMER HIERARCHY
    Publication number: 20190370103
    Abstract: In one example of the technology, via a first independent execution environment of a set of independent execution environments in an integrated circuit, a first watchdog timer is caused to reset on a periodic basis. The set of independent execution environments is configured to have a defense-in-depth hierarchy. The set of independent execution environments includes a first independent execution environment and a second independent execution environment. The first independent execution environment is a most trusted execution environment on the integrated circuit. Via the second independent execution environment: a second watchdog timer is periodically caused to reset on a periodic basis. In response to the second watchdog timer timing out, an interrupt is communicated from the second watchdog timer to the first independent execution environment. In response to the first watchdog timer timing out, at least a portion of the integrated circuit is reset.
    Type: Application
    Filed: May 31, 2018
    Publication date: December 5, 2019
    Inventors: George Thomas LETEY, Douglas L. STILES, Edmund B. NIGHTINGALE, Stephen E. HODGES, Philip John Joseph WRIGHT