Patents by Inventor Jean L. Lassallette

Jean L. Lassallette 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 processing logarithmic signals, and its application to a frequency diversity radar
    Patent number: 4531124
    Abstract: The device for processing logarithmic signals is intended to deliver the logarithm of the sum of the signals which are given under the logarithm sign. The digital processing device receives at least two logarithmic signals and comprises a subtracting circuit for forming the difference between the logarithmic signals applied to the inputs and a transcoder circuit for performing the operation ##EQU1## where Log r1 and Log r2 are respectively the signals applied to the inputs of the device and an adding circuit for performing the operation ##EQU2## and delivering the desired signal Log (r1+r2).
    Type: Grant
    Filed: December 4, 1981
    Date of Patent: July 23, 1985
    Assignee: Thomson CSF
    Inventors: Jean L. Lassallette, Guy Lepere, Gerard Rotat