Patents by Inventor Ouyang He

Ouyang He 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).

  • DCT/IDCT with minimum multiplication
    Patent number: 7035332
    Abstract: A method, apparatus, computer medium, and other embodiments for discrete cosine transform and inverse discrete cosine transform (DCT/IDCT) of image signals are described. A DCT/IDCT module includes a plurality of different cores. One embodiment of a core includes two sets of lookup tables to provide multiplication and add operations for the DCT and IDCT functions. Another embodiment of a core include one set of lookup tables, while another embodiment of a core includes no lookup table. The DCT/IDCT module provides forward DCT and IDCT functionality without the use of additional multipliers.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: April 25, 2006
    Assignee: WIS Technologies, Inc.
    Inventors: Ouyang He, Li Sha, Shuhua Xiang, Ping Zhu, Yaojun Luo