Patents by Inventor Marianne Kerguiduff

Marianne Kerguiduff 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).

  • Echo canceller
    Patent number: 5414767
    Abstract: An echo canceller arrangement (1) receives data x(i) which are likely to generate an echo r(i), and data y(i)+r(i) affected by the echo. An echo synthesizer (50) forms a replica r'(i) of the echo r(i) on the basis of a series of data delayed by delay elements 70.sub.1 . . . 70.sub.N and weighted by weight factors c.sub.k, where k=1, . . . , N. An arithmetic element (85) determines the factors c.sub.k according to:c.sub.k (i+1)=c.sub.k (i)+d.multidot.c.sub.k (i).multidot.sign[x(i-k).multidot.e(i)] where d<1.
    Type: Grant
    Filed: November 23, 1993
    Date of Patent: May 9, 1995
    Assignee: U.S. Philips Corporation
    Inventor: Marianne Kerguiduff