Patents by Inventor Catherine Raimondo

Catherine Raimondo 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).

  • Method and apparatus for coding digital data using vector quantizing techniques
    Patent number: 5444488
    Abstract: A vector quantization encoder comprises a codebook built with the so-called Linde-Buzo-Gray (LBG) algorithm, an intermediary codebook built from the initial codebook (LBG) and a Hash-table containing subsets of the initial codebook (LBG). Vector quantization is then performed in two steps. First, a multistep prequantization of an input vector gives an index in the Hash-table which points to a subset of vectors of the initial codebook (LBG). Then a full search is performed within the pointed subset of vectors of the initial codebook (LBG).
    Type: Grant
    Filed: June 15, 1993
    Date of Patent: August 22, 1995
    Assignee: International Business Machines Corporation
    Inventors: Eric Goubault, Emmanuel Lancon, Jean Menez, Catherine Raimondo