Patents by Inventor Johann Heinzl

Johann Heinzl 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).

  • Global positioning system interference detection
    Patent number: 6842498
    Abstract: Systems and methods are described for a GPS receiver capable of functioning in the presence of interference. A method includes detecting an interfering signal including: tuning a band pass filter over a frequency range; and at each of a plurality of incremental frequencies: computing a set of band pass filter coefficients; sending the set of band pass filter coefficients to a digital filter; repeatedly transforming an analog-to-digital converter output having a quantization level in excess of 2 bits into a band pass filter output with the digital filter to obtain a plurality of samples; computing an average of the plurality of samples; and comparing the average to a threshold to detect peaks that exceed a threshold.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: January 11, 2005
    Assignee: Symmetricom, Inc.
    Inventors: Johann Heinzl, Gary Jacobsen, Jining Yang, Kishan Shenoi
  • Global positioning system receiver capable of functioning in the presence of interference
    Publication number: 20030112905
    Abstract: Systems and methods are described for a GPS receiver capable of functioning in the presence of interference. A method includes detecting an interfering signal including: tuning a band pass filter over a frequency range; and at each of a plurality of incremental frequencies: computing a set of band pass filter coefficients; sending the set of band pass filter coefficients to a digital filter; repeatedly transforming an analog-to-digital converter output having a quantization level in excess of 2 bits into a band pass filter output with the digital filter to obtain a plurality of samples; computing an average of the plurality of samples; and comparing the average to a threshold to detect peaks that exceed a threshold.
    Type: Application
    Filed: November 14, 2002
    Publication date: June 19, 2003
    Inventors: Johann Heinzl, Gary Jacobsen, Jining Yang, Kishan Shenoi
  • Global positioning system receiver capable of functioning in the presence of interference
    Patent number: 6512803
    Abstract: Systems and methods are described for a GPS receiver capable of functioning in the presence of interference. A method includes detecting an interfering signal including: tuning a band pass filter over a frequency range; and at each of a plurality of incremental frequencies: computing a set of band pass filter coefficients; sending the set of band pass filter coefficients to a digital filter; repeatedly transforming an analog-to-digital converter output having a quantization level in excess of 2 bits into a band pass filter output with the digital filter to obtain a plurality of samples; computing an average of the plurality of samples; and comparing the average to a threshold to detect peaks that exceed a threshold.
    Type: Grant
    Filed: March 9, 2001
    Date of Patent: January 28, 2003
    Assignee: Symmetricom, Inc.
    Inventors: Johann Heinzl, Gary Jacobsen, Jining Yang, Kishan Shenoi
  • Global positioning system receiver capable of functioning in the presence of interference
    Publication number: 20020012411
    Abstract: Systems and methods are described for a GPS receiver capable of functioning in the presence of interference. A method includes detecting an interfering signal including: tuning a band pass filter over a frequency range; and at each of a plurality of incremental frequencies: computing a set of band pass filter coefficients; sending the set of band pass filter coefficients to a digital filter; repeatedly transforming an analog-to-digital converter output having a quantization level in excess of 2 bits into a band pass filter output with the digital filter to obtain a plurality of samples; computing an average of the plurality of samples; and comparing the average to a threshold to detect peaks that exceed a threshold.
    Type: Application
    Filed: March 9, 2001
    Publication date: January 31, 2002
    Inventors: Johann Heinzl, Gary Jacobsen, Jining Yang, Kishan Shenoi