Patents by Inventor Jürgen Zeller

Jürgen Zeller 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).

  • Encryption and decryption of multi-media data
    Patent number: 6735311
    Abstract: A method for ciphering multimedia includes the entering of an ciphering index in a definition data block of the multimedia data, this index pointing to an ciphering algorithm which is to be used. In response to the ciphering index in the definition data block one of a plurality of ciphering algorithms is selected. The multimedia data are ciphered using the selected ciphering algorithm. Various additional entries in the definition data block which is assigned to the multimedia data permit the clearing or enabling of a deciphering device, rapid access to a database of ciphered multimedia data and a customer- and data-specific use of the multimedia data while taking copyright aspects into account.
    Type: Grant
    Filed: October 26, 1998
    Date of Patent: May 11, 2004
    Assignee: Fraunhofer-Gellschaft zur Forderung der Angewandten Forschung E.V.
    Inventors: Niels Rump, Jürgen Zeller, Harald Popp
  • Process for sensing manipulations of digital information
    Patent number: 6370209
    Abstract: In a method for detecting a manipulation performed on digital information the erroneous determination of a manipulation during processing disturbances is prevented by subdividing the information into information subunits from each of which an identification is derived which is assigned to the respective information subunit. After processing the information subunits together with their identifications, potentially manipulated information subunits are determined on the basis of their identifications. This enables the whole of the information to be classified as manipulated if at least two information subunits which are correlated with respect to time or location have been determined to have been potentially manipulated.
    Type: Grant
    Filed: May 6, 1999
    Date of Patent: April 9, 2002
    Assignee: Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V.
    Inventors: Jürgen Zeller, Heinz Gerhäuser
  • Process of low sampling rate digital encoding of audio signals
    Patent number: 6185539
    Abstract: In a method for coding an audio signal digitized at a low sampling rate to obtain time domain audio samples. A frequency domain representation of the time domain audio samples is produced. The frequency domain representation includes successive frequency lines. These frequency lines are grouped into a plurality of scale factor bands. The successive frequency lines in a scale factor band are coded with the same scale factor. A plurality of regions is formed by grouping the scale factor bands, wherein successive scale factor bands form a region within which all the scale factors are coded with the same number of bits, which is determined according to the largest scale factor of the region. The scale factors assigned to scale factor bands within the highest region that includes the higher frequency successive frequency lines are set to zero. The frequency lines in the highest region are coded using the zero-valued scale factors that correspond to a multiplication factor of 1.
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: February 6, 2001
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Oliver Kunz, Martin Dietz, Rainer Buchta, Jürgen Zeller, Karlheinz Brandenburg, Martin Sieler, Heinz Gerhäuser