Patents by Inventor Sven Kordan

Sven Kordan 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 AND APPARATUS FOR LOSSLESS ENCODING OF A SOURCE SIGNAL, USING A LOSSY ENCODED DATA STREAM AND A LOSSLESS EXTENSION DATA STREAM
    Publication number: 20090306993
    Abstract: The invention is related to lossless encoding of a source signal, using a lossy encoded data stream and a lossless extension data stream which together form a lossless encoded data stream for said source signal, whereby lossless audio compression means audio coding with bit-exact reproduction of the original PCM samples at decoder output. The lossy encoding/decoding may be an mp3 coding/decoding. The invention uses an integer MDCT and frequency domain de-correlation and time domain de-correlation for the residual signal of the base-layer lossy audio codec. The exploitation of side information from the lossy base-layer codec allows for reduction of redundancies in the gross bit stream, thus improving the coding efficiency of the lossy based lossless codec.
    Type: Application
    Filed: July 12, 2007
    Publication date: December 10, 2009
    Applicant: THOMSON LICENSING
    Inventors: Oliver Wuebbolt, Florian Keiler, Peter Jax, Sven Kordan, Johannes Boehm