Patents by Inventor Claude R. Galand

Claude R. Galand 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).

  • Process for compressing data relative to voice signals and device applying said process
    Patent number: 4216354
    Abstract: A voice signal is transmitted digitally at reduced bit rate by use of data compression. The original frequency components of a telephone band width of the voice signal sampled at 8 KHz and quantized with 12 bits are transformed into three parameters: SIGNAL data representing adaptive quantization for lower frequency (300-800 Hz) sub-bands; COEF data representing pre-emphasized parcor type coefficients for the higher frequency (800-3000 Hz) band; and, ENERGY data representing higher frequency short term energy level. The three parameters are multiplexed for transmission in binary-code form, thereby representing a recoding of the original binary-coded voice signals.
    Type: Grant
    Filed: November 29, 1978
    Date of Patent: August 5, 1980
    Assignee: International Business Machines Corporation
    Inventors: Daniel J. Esteban, Claude R. Galand, Daniel Mauduit, Jean Menez