Patents by Inventor Bernth A. T. Johansson

Bernth A. T. Johansson 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).

  • Patent number: 8884807
    Abstract: A system and method for pseudo real time collection of receive signal data in a single- or multi-channel ground penetrating radar. Each channel transmits electromagnetic impulses into a medium under test during each of a plurality of runs over the medium. Run receive signals are received in response to the transmitted impulses. Each run receive signal is sampled multiple times at a run sample rate. The sample points of each run are delayed by delay sequences with respect to the sample points of the other runs. The sample points of the individual runs are stored as a composite set of sample points representative of a receive signal sampled at an effective sample rate equal to a multiple of the run sample rate where the multiple is the number of runs.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: November 11, 2014
    Assignee: MalÄ Geoscience USA
    Inventors: Bernth A. T. Johansson, Johan Gustaf Friborg
  • Patent number: 7586433
    Abstract: Systems and methods for generating trigger signals in a ground penetrating radar. In one embodiment, sequence data is generated based on a desired triggering sequence for an array of antennas. The sequence may be generated based on position data from position devices and operational modes. According to one embodiment, as the sequence data is generated it is transferred to, and stored on, a dual port memory device through a first side of the dual port memory device. The sequence data can then be accessed independently through a second side of the dual port memory device. This data may be used by a logical network to produce antenna trigger signals as a logical combination of timing input signals and the sequence data.
    Type: Grant
    Filed: March 26, 2007
    Date of Patent: September 8, 2009
    Assignee: Mala Geoscience AB
    Inventors: Bernth A. T. Johansson, Tommy Leijon
  • Patent number: 6617996
    Abstract: A ground penetrating radar system including a processor for generating audible output signals having discrete frequency components representative of the depth of buried targets. The amplitude of the audible frequency components is representative of the size or mass of the target.
    Type: Grant
    Filed: June 14, 2001
    Date of Patent: September 9, 2003
    Assignee: Mala Geoscience AB
    Inventors: Bernth A. T. Johansson, Johan Gustaf Friborg, A. B. Marlene Bergstrom
  • Publication number: 20020196177
    Abstract: A ground penetrating radar system including a processor for generating audible output signals having discrete frequency components representative of the depth of buried targets. The amplitude of the audible frequency components is representative of the size or mass of the target.
    Type: Application
    Filed: June 14, 2001
    Publication date: December 26, 2002
    Inventors: Bernth A. T. Johansson, Johan Gustaf Friborg, A. B. Marlene Bergstrom
  • Patent number: 6496137
    Abstract: Methods and systems consistent with this invention identify a buried object using array-based ground penetrating radar having a control device, a plurality of transmit antennas, and a plurality of receive antennas. Such methods and systems receive a transmit timing input signal and a receive timing input signal. Such methods and systems comprise a first delay circuit for receiving the transmit timing input signal and generating a number of intermediate transmit timing signals delayed with respect to each other by a delay time, and transmit output switch circuit to select either the transmit timing input signal or a corresponding one of the intermediate transmit timing signals as a corresponding output transmit timing signal.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: December 17, 2002
    Assignee: Mala GeoScience AB
    Inventor: Bernth A. T. Johansson