Patents by Inventor Werner Keesen

Werner Keesen 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).

  • Method for recording and/or reproducing digitally coded signals with interframe and interframe coding
    Patent number: 4969055
    Abstract: A method for recording and/or reproducing digitally coded video signals. A frame sequence is coded in such a way that an intraframe coded picture having a fixed or variable block length is recorded at the beginning. A fixed number of interframe coded pictures follow. The block length of the interframe coded pictures can be both fixed and variable. A cutting begins with and ends before an intraframe coded picture.
    Type: Grant
    Filed: August 25, 1988
    Date of Patent: November 6, 1990
    Inventors: Gunter Oberjatzas, Werner Keesen, Jean-Yves Catros, Christian J. Richard
  • Transformation circuit
    Patent number: 4860097
    Abstract: A circuit for the transformation of digital video signals, which circuit includes components operative for effecting transformation of a digital video signal in the form of a matrix of signal elements in a sequence which processes the matrix signal elements row by row and column by column, respectively.
    Type: Grant
    Filed: December 14, 1987
    Date of Patent: August 22, 1989
    Assignee: Deutsche Thomson-Brandt GmbH
    Inventors: Wolfgang Hartnack, Werner Keesen, Herbert Schutze
  • Method for correcting television signals
    Patent number: 4807033
    Abstract: Method of correcting television signals transmitted in blocks, including detecting defective blocks with an error detection circuit and calculating substitute information for a block determined to be defective from an environment of the defective block or from a television signal preceding in time the signal containing the defective block.
    Type: Grant
    Filed: October 1, 1986
    Date of Patent: February 21, 1989
    Assignee: Deutsche Thomson-Brandt GmbH
    Inventors: Werner Keesen, Wolfgang Hartnack, Dietrich Westerkamp