Patents by Inventor Xixin Qian

Xixin Qian 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).

  • Screen saver trigger using partial still picture detection
    Patent number: 8356319
    Abstract: A method of determining when to activate a screen saver for a display device comprises selecting as a sample set a sparse subset of pixels which collectively form a display frame. An evaluation is performed of only the pixels in the sample set, to determine over a plurality of display frames whether pixels within the sample set have undergone a sufficient amount of change so that burn-in is unlikely. A determination is then made of whether to activate the screen saver based on a result of the evaluation.
    Type: Grant
    Filed: January 11, 2008
    Date of Patent: January 15, 2013
    Assignee: CSR Technology Inc.
    Inventors: Gustavo A. Fernandez, Xixin Qian
  • SCREEN SAVER TRIGGER USING PARTIAL STILL PICTURE DETECTION
    Publication number: 20090179909
    Abstract: A method of determining when to activate a screen saver for a display device comprises selecting as a sample set a sparse subset of pixels which collectively form a display frame. An evaluation is performed of only the pixels in the sample set, to determine over a plurality of display frames whether pixels within the sample set have undergone a sufficient amount of change so that burn-in is unlikely. A determination is then made of whether to activate the screen saver based on a result of the evaluation.
    Type: Application
    Filed: January 11, 2008
    Publication date: July 16, 2009
    Applicant: Zoran Corporation
    Inventors: Gustavo A. Fernandez, Xixin Qian