Patents by Inventor Alain Deconche

Alain Deconche 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).

  • Patent number: 4527278
    Abstract: A frequency correction method used in the receiver of a data transmission system in which a synchronizing word is transmitted before the data. During each of several steps there are calculated at least one pair of in-phase partial correlations C.sub.r (k-1), C.sub.r (k) and at least one pair of quadrature partial correlations C.sub.i (k-1), C.sub.i (k). The partial correlations of the order (k-1) and (k) in each step relate to two consecutive portions of the same length of a local synchronizing word and the samples of the received demodulated signal; the portions of a step p are greater than the portions of step p-1; the partial correction of a step p are phase-corrected by taking account of the frequency correlation calculated in step p-1. A frequency deviation is calculated from the partial correlations of each step. The final frequency correction to be retained is the sum of the frequency deviations calculated at the end of each step.
    Type: Grant
    Filed: April 7, 1983
    Date of Patent: July 2, 1985
    Assignee: U.S. Philips Corporation
    Inventors: Alain Deconche, Jean-Pierre H. Van Uffelen