Patents by Inventor An-Chao Tsai

An-Chao Tsai 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).

  • Direction detection algorithms for H.264/AVC intra prediction
    Patent number: 8204114
    Abstract: A block intra prediction direction detection algorithm comprises acts of dividing a block, finding directions from edge assent rules, determining a main edge of the block, selecting prediction modes from the main edge, choosing base prediction modes and using all unique selected and base prediction modes in intra prediction. The algorithms comprise a 4×4 block intra prediction direction detection algorithm, a 16×16 luminance block intra prediction direction detection algorithm and an 8×8 chrominance block intra prediction direction detection algorithm.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: June 19, 2012
    Assignee: National Cheng-Kung University
    Inventors: Jhing-Fa Wang, Wei-Guang Lin, An-Chao Tsai
  • DIRECTION DETECTION ALGORITHMS FOR H.264/AVC INTRA PREDICTION
    Publication number: 20090052534
    Abstract: A block intra prediction direction detection algorithm comprises acts of dividing a block, finding directions from edge assent rules, determining a main edge of the block, selecting prediction modes from the main edge, choosing base prediction modes and using all unique selected and base prediction modes in intra prediction. The algorithms comprise a 4×4 block intra prediction direction detection algorithm, a 16×16 luminance block intra prediction direction detection algorithm and an 8×8 chrominance block intra prediction direction detection algorithm.
    Type: Application
    Filed: July 3, 2008
    Publication date: February 26, 2009
    Applicant: NATIONAL CHENG-KUNG UNIVERSITY
    Inventors: Jhing-Fa WANG, Wei-Guang LIN, An-Chao TSAI