Patents Represented by Attorney J. Stephan Yeo

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  • Vector transform coder with multi-layered codebooks and dynamic bit allocation
    Patent number: 5521988
    Abstract: In a vector transform coding (VTC) scheme for image and video compression, a multi-layered codebook structure and a dynamic bit-allocation scheme in the vector transform domain are employed. The main advantage of this technique is that distortion is controlled by dynamically allocating more bits to vectors causing larger distortions and less bits to vectors causing smaller distortions.
    Type: Grant
    Filed: April 5, 1994
    Date of Patent: May 28, 1996
    Assignee: GTE Laboratories Incorporated
    Inventors: Weiping Li, Ya-Qin Zhang