Patents by Inventor Karel J. Rijkse

Karel J. Rijkse 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).

  • System comprisisng at least one encoder for coding a digital signal and at least one decoder for decoding a coded digital signal, and encoder and decoder for use in the system
    Patent number: 5422672
    Abstract: An encoder for coding a digital signal comprises an encoder input for receiving the digital signal; a first data processor, having an input which is coupled to the encoder input, for generating a first coded digital signal at a first output of the first data processor; a first reduction device coupled to the encoder input, for reducing the received digital signal; a second data processor, having an input which is coupled to the first reduction device, for generating a second coded digital signal at a first output of the second data processor; a first encoder memory having an input which is coupled to a second output of the first data processor, and having an output which is coupled to the input of the first data processor; a second encoder memory having an input which is coupled to a second output of the second data processor, and having an output which is coupled to the input of the second data processor; and a first encoder prediction device having a first side which is coupled to the second output of the s
    Type: Grant
    Filed: March 8, 1993
    Date of Patent: June 6, 1995
    Assignee: Koninklijke PTT Nederland N.V.
    Inventors: Roel T. Horst, Arian Koster, Karel J. Rijkse, Dolf A. Schinkel