Patents by Inventor Phillippe Guichard

Phillippe Guichard 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).

  • Device for encoding digital video signals including means for classifying the video signals into distinct families prior to normalization and quantization
    Patent number: 5079631
    Abstract: Device for encoding digital video signals which are representative of the luminance or the chrominance of a given number of pixels of a picture divided into blocks, including respective circuits for correlation reduction, normalization, quantization, encoding, and rate control, the latter receiving the output signals from the encoding circuit in accordance with a variable rate and supplying rate control signals applied to the normalization circuit and encoded signals at a constant rate at the output of the encoding device.
    Type: Grant
    Filed: March 6, 1990
    Date of Patent: January 7, 1992
    Assignee: U.S. Philips Corporation
    Inventors: Jean-Jacques Lhuillier, Phillippe Guichard