Patents by Inventor Yuh-Ruey Lee

Yuh-Ruey Lee 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).

  • Low-complexity spatial downscaling video transcoder and method thereof
    Patent number: 7180944
    Abstract: A low-complexity spatial downscaling video transcoder and method thereof are disclosed. The transcoder comprises a decoder having a reduced DCT-MC unit, a DCT-domain downscaling unit, and an encoder. The decoder performs the DCT-MC operation at a reduced-resolution for P-/B-frames in an MPEG coded bit-stream. The DCT-domain downscaling unit is used for spatial downscaling in the DCT-domain. After the downscaling and the motion vectors re-sampling, the encoder determines the encoding modes and outputs the encoded bit-stream. Compared with the original CDDT, this invention can achieve significant computation reduction and speeds up the transcoder without any quality degradation.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: February 20, 2007
    Assignee: Industrial Technology Research Institute
    Inventors: Chia-Wen Lin, Yuh-Ruey Lee, Yeh-Kai Chou
  • Low-complexity spatial downscaling video transcoder and method thereof
    Publication number: 20050169377
    Abstract: A low-complexity spatial downscaling video transcoder and method thereof are disclosed. The transcoder comprises a decoder having a reduced DCT-MC unit, a DCT-domain downscaling unit, and an encoder. The decoder performs the DCT-MC operation at a reduced-resolution for P-/B-frames in an MPEG coded bit-stream. The DCT-domain downscaling unit is used for spatial downscaling in the DCT-domain. After the downscaling and the motion vectors re-sampling, the encoder determines the encoding modes and outputs the encoded bit-stream. Compared with the original CDDT, this invention can achieve significant computation reduction and speeds up the transcoder without any quality degradation.
    Type: Application
    Filed: July 8, 2004
    Publication date: August 4, 2005
    Inventors: Chia-Wen Lin, Yuh-Ruey Lee, Yeh-Kai Chou