Patents by Inventor Jurgen M. E. Tombal

Jurgen M. E. Tombal 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).

  • Data transmission system for synchronously transmitting an auxiliary bitstream within a main bitstream
    Patent number: 5369669
    Abstract: A data transmission system is proposed in which an auxiliary bitstream of low bitrate (AUX) is coded together with a main bitstream of high bitrate (PRIM) without increasing the transmission rate above the high bitrate. This auxiliary bitstream (AUX) is moreover transmitted synchronously with the main bitstream (PRIM). Transmitter (T) divides the main bitstream (PRIM) in periodically occurring blocks of Y bits and codes one bit of the auxiliary bitstream (AUX) in each of the blocks by using a first (AMI) or a second (VAMI) coding law according to the binary value of that bit. The second law is constructed by violating the first coding law (AMI) according to a predetermined violation law. Redundancy in the first coding law (AMI) is used to introduce symbol sequences not permitted under this first coding law (AMI) and to so obtain the second coding law (VAMI).
    Type: Grant
    Filed: December 22, 1992
    Date of Patent: November 29, 1994
    Assignee: Alcatel N.V.
    Inventors: Jurgen M. E. Tombal, Peter P. F. Reusens, Daniel Sallaerts