Patents by Inventor Congyi Xu

Congyi Xu 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).

  • Generation and use of specific probability tables for arithmetic coding in data compression systems
    Patent number: 8473428
    Abstract: In one embodiment, when executing data compression or decompression for a data set, a particular compression category of the data set is determined, and a corresponding probability table specific to the particular compression category of the data set is accessed. Then, one of either arithmetic coding (e.g., an encoder device) or decoding (e.g., a decoder device) may be performed on the data set based on the specific probability table. Specifically, in one or more other embodiments, techniques may statistically generate probability tables specific to particular compression categories.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: June 25, 2013
    Assignee: Cisco Technology, Inc.
    Inventors: Xiang Li, Congyi Xu
  • GENERATION AND USE OF SPECIFIC PROBABILITY TABLES FOR ARITHMETIC CODING IN DATA COMPRESSION SYSTEMS
    Publication number: 20100161523
    Abstract: In one embodiment, when executing data compression or decompression for a data set, a particular compression category of the data set is determined, and a corresponding probability table specific to the particular compression category of the data set is accessed. Then, one of either arithmetic coding (e.g., an encoder device) or decoding (e.g., a decoder device) may be performed on the data set based on the specific probability table. Specifically, in one or more other embodiments, techniques may statistically generate probability tables specific to particular compression categories.
    Type: Application
    Filed: December 18, 2008
    Publication date: June 24, 2010
    Inventors: Xiang Li, Congyi Xu