Patents by Inventor David A. Leech

David A. Leech 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: 10504203
    Abstract: Systems and methods are disclosed to enable switching of graphics processing unit (GPU) resources based on different factors. Embodiments include a virtual graphics driver as an interface between GPU drivers and the applications or graphics framework executing on an electronic device. The virtual graphics driver may switch GPU resources from a first GPU to a second GPU by routing function calls to the first GPU or the second GPU. The switching of GPU resources may be based on power management, system events such as hot-plug events, load management, user requests, any other factor, or any combination thereof. In some embodiments, a virtual frame buffer driver is provided that interfaces with the frame buffer of the GPU and provides a virtual view of the frame buffer to manage additional system application programming interfaces (APIs) during the switch.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: December 10, 2019
    Assignee: APPLE INC.
    Inventors: David J. Redman, Changki Min, Phillip J. Churchill, Adrian T. Sheppard, David A. Leech, Unmesh Sahasrabuddhe, Ian Hendry, Eve Brasfield
  • Publication number: 20160328818
    Abstract: Systems and methods are disclosed to enable switching of graphics processing unit (GPU) resources based on different factors. Embodiments include a virtual graphics driver as an interface between GPU drivers and the applications or graphics framework executing on an electronic device. The virtual graphics driver may switch GPU resources from a first GPU to a second GPU by routing function calls to the first GPU or the second GPU. The switching of GPU resources may be based on power management, system events such as hot-plug events, load management, user requests, any other factor, or any combination thereof. In some embodiments, a virtual frame buffer driver is provided that interfaces with the frame buffer of the GPU and provides a virtual view of the frame buffer to manage additional system application programming interfaces (APIs) during the switch.
    Type: Application
    Filed: May 9, 2016
    Publication date: November 10, 2016
    Inventors: David J. Redman, Changki Min, Phillip J. Churchill, Adrian T. Sheppard, David A. Leech, Unmesh Sahasrabuddhe, Ian Hendry, Eve Brasfield
  • Patent number: 9336557
    Abstract: Methods and apparatus for processing media signals. In one embodiment, a data processing device processes fixed and variable rate data using a first and second processing unit. The processing comprises real-time processing of audio/video signals by a graphics processing unit (GPU) and/or central processing unit (CPU). The processing units process data efficiently by establishing one processor as always processing variable rate data, and using one or more schemes for determining processor will process fixed rate data. A shared memory enables the processors to communicate with one another in order to determine which will process the fixed rate data. In one scheme for determining which of the processors will process the fixed rate data the second processor need merely be unlocked. In another embodiment, the second processor must be unlocked and immediately available.
    Type: Grant
    Filed: May 1, 2013
    Date of Patent: May 10, 2016
    Assignee: Apple Inc.
    Inventors: Brett D. George, Changki Min, David A. Leech, Matthew X. Mora, Niel D. Warren, Rajabali M. Koduri, Ronald N. Isaac
  • Patent number: 9336028
    Abstract: Systems and methods are disclosed to enable switching of graphics processing unit (GPU) resources based on different factors. Embodiments include a virtual graphics driver as an interface between GPU drivers and the applications or graphics framework executing on an electronic device. The virtual graphics driver may switch GPU resources from a first GPU to a second GPU by routing function calls to the first GPU or the second GPU. The switching of GPU resources may be based on power management, system events such as hot-plug events, load management, user requests, any other factor, or any combination thereof. In some embodiments, a virtual frame buffer driver is provided that interfaces with the frame buffer of the GPU and provides a virtual view of the frame buffer to manage additional system application programming interfaces (APIs) during the switch.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: May 10, 2016
    Assignee: APPLE INC.
    Inventors: David J. Redman, Changki Min, Philip J. Churchill, Adrian T. Sheppard, David A. Leech, Unmesh Sahasrabuddhe, Ian Hendry, Eve Brasfield
  • Publication number: 20130293558
    Abstract: Methods and apparatus for processing media signals. In one embodiment, a data processing device processes fixed and variable rate data using a first and second processing unit. The processing comprises real-time processing of audio/video signals by a graphics processing unit (GPU) and/or central processing unit (CPU). The processing units process data efficiently by establishing one processor as always processing variable rate data, and using one or more schemes for determining processor will process fixed rate data. A shared memory enables the processors to communicate with one another in order to determine which will process the fixed rate data. In one scheme for determining which of the processors will process the fixed rate data the second processor need merely be unlocked. In another embodiment, the second processor must be unlocked and immediately available.
    Type: Application
    Filed: May 1, 2013
    Publication date: November 7, 2013
    Inventors: Brett D. George, Changki Min, David A. Leech, Matthew X. Mora, Neil D. Warren, Rajabali M. Koduri, Ronald N. Isaac
  • Publication number: 20100328323
    Abstract: Systems and methods are disclosed to enable switching of graphics processing unit (GPU) resources based on different factors. Embodiments include a virtual graphics driver as an interface between GPU drivers and the applications or graphics framework executing on an electronic device. The virtual graphics driver may switch GPU resources from a first GPU to a second GPU by routing function calls to the first GPU or the second GPU. The switching of GPU resources may be based on power management, system events such as hot-plug events, load management, user requests, any other factor, or any combination thereof. In some embodiments, a virtual frame buffer driver is provided that interfaces with the frame buffer of the GPU and provides a virtual view of the frame buffer to manage additional system application programming interfaces (APIs) during the switch.
    Type: Application
    Filed: June 25, 2009
    Publication date: December 30, 2010
    Applicant: APPLE INC.
    Inventors: David J. Redman, Changki Min, Philip J. Churchill, Adrian T. Sheppard, David A. Leech, Unmesh Sahasrabuddhe, Ian Hendry, Eve Brasfield