Patents by Inventor Shou-Jen Wu

Shou-Jen Wu 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).

  • Patent number: 8422546
    Abstract: A video encoder includes a region detector module that classifies blocks of video frames. An adaptive filter module applies a median filter to a block based upon a block classification assigned by the region detector module. An adaptive quantization module quantizes a block according to a quantization method adaptively determined based upon a block classification assigned by the region detection module. In one example, a video encoder adaptively determines a median filter selected using a block classification. In another example, a video encoder adaptively determines whether to drop an isolated last transform coefficient based on the block classification, and/or applies a dead-zone selected using the block classification.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: April 16, 2013
    Assignee: Microsoft Corporation
    Inventors: Chih-Lung Lin, Minghui Xia, Pohsiang Hsu, Shou-Jen Wu
  • Publication number: 20060268990
    Abstract: A video encoder includes a region detector module that classifies blocks of video frames. An adaptive filter module applies a median filter to a block based upon a block classification assigned by the region detector module. An adaptive quantization module quantizes a block according to a quantization method adaptively determined based upon a block classification assigned by the region detection module. In one example, a video encoder adaptively determines a median filter selected using a block classification. In another example, a video encoder adaptively determines whether to drop an isolated last transform coefficient based on the block classification, and/or applies a dead-zone selected using the block classification.
    Type: Application
    Filed: May 25, 2005
    Publication date: November 30, 2006
    Applicant: Microsoft Corporation
    Inventors: Chih-Lung Lin, Minghui Xia, Pohsiang Hsu, Shou-Jen Wu