Patents by Inventor James Ian King

James Ian King 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).

  • Cable detection apparatus and method
    Patent number: 7235980
    Abstract: A cable detection apparatus is disclosed having a filter, the filter transmitting components of a signal detected substantially at certain harmonics of a first frequency. The filter may also attenuate the signal at certain even harmonics thereof. A method of detecting and/or locating cables in the same manner is also disclosed.
    Type: Grant
    Filed: March 21, 2006
    Date of Patent: June 26, 2007
    Assignee: Radiodetection Limited
    Inventors: Richard D. Pearson, James Ian King
  • Methods and systems for generating phase-derivative sound
    Patent number: 7184951
    Abstract: Methods and systems for digitally generating sound from phase and amplitude information of a narrow bandwidth signal, such as a narrow bandwidth locator signal. Phase-derivative information is determined from the phase information. The bandwidth of the phase-derivative information is spread out, or stretched, over a wider bandwidth, so that the frequency variations will be more perceptible to users. The result is combined with an audio band carrier frequency, the result of which controls an oscillator. The oscillator output is combined with the amplitude information to generate an analog audio signal that is modulated with the amplitude information and the phase-derivative information. The amplitude information wider bandwidth phase-derivative information are used to modulate an audio carrier in both frequency and amplitude.
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: February 27, 2007
    Assignee: Radiodetection Limted
    Inventors: John Mark Royle, James Ian King, Richard David Pearson
  • Cable detection apparatus and method
    Patent number: 6977508
    Abstract: A cable detection apparatus is disclosed having a filter, the filter transmitting components of a signal detected substantially at certain harmonics of a first frequency. The filter may also attenuate the signal at certain even harmonics thereof. A method of detecting and/or locating cables in the same manner is also disclosed.
    Type: Grant
    Filed: March 31, 2003
    Date of Patent: December 20, 2005
    Assignee: Radiodetection Limited
    Inventors: Richard D. Pearson, James Ian King
  • Cable detection apparatus and method
    Publication number: 20040189322
    Abstract: A cable detection apparatus is disclosed having a filter, the filter transmitting components of a signal detected substantially at certain harmonics of a first frequency. The filter may also attenuate the signal at certain even harmonics thereof. A method of detecting and/or locating cables in the same manner is also disclosed.
    Type: Application
    Filed: March 31, 2003
    Publication date: September 30, 2004
    Inventors: Richard D. Pearson, James Ian King
  • Methods and systems for generating-phase derivative sound
    Publication number: 20030158729
    Abstract: Methods and systems for digitally generating sound from phase and amplitude information of a narrow bandwidth signal, such as a narrow bandwidth locator signal. Phase-derivative information is determined from the phase information. The bandwidth of the phase-derivative information is spread out, or stretched, over a wider bandwidth, so that the frequency variations will be more perceptible to users. The result is combined with an audio band carrier frequency, the result of which controls an oscillator. The oscillator output is combined with the amplitude information to generate an analog audio signal that is modulated with the amplitude information and the phase-derivative information. The amplitude information wider bandwidth phase-derivative information are used to modulate an audio carrier in both frequency and amplitude.
    Type: Application
    Filed: February 15, 2002
    Publication date: August 21, 2003
    Applicant: Radiodetection Limited
    Inventors: John Mark Royle, James Ian King, Richard David Pearson