Patents by Inventor Tianjiang Li

Tianjiang Li 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).

  • Video processor timing generation
    Patent number: 8462268
    Abstract: Embodiments of the present invention may provide a clock and timing generation scheme for a video signal processor (e.g., a scaler), which enables fast switching between different input video standards without disturbing the output clock or timing. The scheme also may minimize the number of video frames that are dropped or repeated at the output. This may be achieved by locking the video's output timing to the input timing and also by utilizing a frame buffer to remove instantaneous discontinuities caused when an input is changed.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: June 11, 2013
    Assignee: Analog Devices, Inc.
    Inventors: Seamus Ryan, Weijun Xu, Tianjiang Li, Wei Che, Niall O'Connell
  • Content adaptive scaler based on a farrow structure
    Patent number: 8346021
    Abstract: Embodiments of the present invention are directed to an image processing system. The image processing system may comprise a content detection module having an input to receive a sequence of input pixels and configured to generate an adjustable parameter based on detected differences between adjacent pairs of input pixels, and a digital filter having an input for the sequence of input pixels and a control input coupled to an output of the content detection module. The digital filter may adjust filtering coefficients according to the parameter.
    Type: Grant
    Filed: July 20, 2009
    Date of Patent: January 1, 2013
    Assignee: Analog Devices, Inc.
    Inventors: Lin Li, Tianjiang Li, Wei Che, Huide Li
  • VIDEO PROCESSOR TIMING GENERATION
    Publication number: 20120147267
    Abstract: Embodiments of the present invention may provide a clock and timing generation scheme for a video signal processor (e.g., a scaler), which enables fast switching between different input video standards without disturbing the output clock or timing. The scheme also may minimize the number of video frames that are dropped or repeated at the output. This may be achieved by locking the video's output timing to the input timing and also by utilizing a frame buffer to remove instantaneous discontinuities caused when an input is changed.
    Type: Application
    Filed: December 10, 2010
    Publication date: June 14, 2012
    Applicant: ANALOG DEVICES, INC.
    Inventors: Seamus RYAN, Weijun XU, Tianjiang LI, Wei CHE, Niall O'CONNELL
  • CONTENT ADAPTIVE SCALER BASED ON A FARROW STRUCTURE
    Publication number: 20100283799
    Abstract: Embodiments of the present invention are directed to an image processing system. The image processing system may comprise a content detection module having an input to receive a sequence of input pixels and configured to generate an adjustable parameter based on detected differences between adjacent pairs of input pixels, and a digital filter having an input for the sequence of input pixels and a control input coupled to an output of the content detection module. The digital filter may adjust filtering coefficients according to the parameter.
    Type: Application
    Filed: July 20, 2009
    Publication date: November 11, 2010
    Applicant: Analog Devices, Inc.
    Inventors: Lin LI, Tianjiang LI, Wei CHE, Huide LI