Patents by Inventor Christoph Schulien

Christoph Schulien 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).

  • Adjustment for equalization parameters in receivers
    Patent number: 7184475
    Abstract: A method of adjusting equalization parameters in a receiver wherein a bit error rate (BER) in a data stream is measured from the number of corrected bits in data blocks which have an information section and an error correction section. A predetermined equalization parameter is changed, and the bit error rate (BER) after change is again measured to find out how to change the predetermined equalization parameter until an optimum is reached. When adjusting the threshold value of the receiver, the history of occurring bits preceding the actual sampled bit is taken into consideration in that the amount and direction of adjustment is derived from a look-up table.
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: February 27, 2007
    Assignee: Lucent Technologies Inc.
    Inventors: Ralf Dohmen, Christoph Schulien, Herbert Haunstein, Achim Herzberger, Georg Roell, Konrad Sticht
  • Method and apparatus for correcting the phase of a clock in a data receiver
    Patent number: 7065160
    Abstract: A method for correcting the phase of a clock in a data receiver which receives a data flow representing different signal levels with logical high and low signal values and signal transitions positioned therebetween, wherein the positions of such signal transitions between respective two adjacent logical signal values are evaluated for correcting the phase of the clock. The position of a signal transition between a first pair of signal values on one level (11) or a second pair of signal values on the other level (00) is weighted stronger in the evaluation then the positions of signal transitions between adjacent single signal values (1,0) of different signal levels.
    Type: Grant
    Filed: January 9, 2002
    Date of Patent: June 20, 2006
    Assignee: Lucent Technologies Inc.
    Inventors: Matthias Berger, Claus Dorschky, Herbert Haunstein, Frank Kunz, Christoph Schulien, Konrad Sticht
  • Method and apparatus for correcting the phase of a clock in a data receiver
    Publication number: 20030128779
    Abstract: A method for correcting the phase of a clock in a data receiver which receives a data flow representing different signal levels with logical high and low signal values and signal transitions positioned therebetween, wherein the positions of such signal transitions between respective two adjacent logical signal values are evaluated for correcting the phase of the clock. The position of a signal transition between a first pair of signal values on one level (11) or a second pair of signal values on the other level (00) is weighted stronger in the evaluation then the positions of signal transitions between adjacent single signal values (1,0) of different signal levels.
    Type: Application
    Filed: January 9, 2002
    Publication date: July 10, 2003
    Inventors: Matthias Berger, Claus Dorschky, Herbert Haunstein, Frank Kunz, Christoph Schulien, Konrad Sticht
  • Adjustment of equalization parameters in receivers
    Publication number: 20020181573
    Abstract: A method of adjusting equalization parameters in a receiver wherein a bit error rate (BER) in a data stream is measured from the number of corrected bits in data blocks which have an information section and an error correction section. A predetermined equalization parameter is changed, and the bit error rate (BER) after change is again measured to find out how to change the predetermined equalization parameter until an optimum is reached. When adjusting the threshold value of the receiver, the history of occurring bits preceding the actual sampled bit is taken into consideration in that the amount and direction of adjustment is derived from a look-up table.
    Type: Application
    Filed: January 22, 2002
    Publication date: December 5, 2002
    Inventors: Ralf Dohmen, Christoph Schulien, Herbert Haunstein, Achim Herzberger, Georg Roell, Konrad Sticht