Patents by Inventor Changan Lao

Changan Lao 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).

  • Memory management based on automatic full-screen detection
    Patent number: 8368707
    Abstract: A window surface associated with a first application is automatically detected as an exclusive window surface for a display. In response, the system automatically transitions to a full-screen mode in which a graphics processor flushes content to the display. The full-screen mode includes flipping between a front surface buffer and a back surface buffer associated with the first application. It is subsequently detected that the window surface associated with the first application is not an exclusive window surface for the display. In response, the system automatically transitions to a windowed mode in which the graphics processor flushes content to the display. In windowed mode, the system frame buffer is flushed to the display. The transition to windowed mode includes a minimum number of buffer content copy operations between the front surface buffer, the back surface buffer and the system frame buffer.
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: February 5, 2013
    Assignee: Apple Inc.
    Inventors: Changan Lao, Kenneth C. Dyke, John Stauffer
  • MEMORY MANAGEMENT BASED ON AUTOMATIC FULL-SCREEN DETECTION
    Publication number: 20100289806
    Abstract: A window surface associated with a first application is automatically detected as an exclusive window surface for a display. In response, the system automatically transitions to a full-screen mode in which a graphics processor flushes content to the display. The full-screen mode includes flipping between a front surface buffer and a back surface buffer associated with the first application. It is subsequently detected that the window surface associated with the first application is not an exclusive window surface for the display. In response, the system automatically transitions to a windowed mode in which the graphics processor flushes content to the display. In windowed mode, the system frame buffer is flushed to the display. The transition to windowed mode includes a minimum number of buffer content copy operations between the front surface buffer, the back surface buffer and the system frame buffer.
    Type: Application
    Filed: May 18, 2009
    Publication date: November 18, 2010
    Applicant: APPLE INC.
    Inventors: Changan Lao, Kenneth C. Dyke, John Stauffer