Patents by Inventor Syuji Aizawa

Syuji Aizawa 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).

  • Intrusion-object detection system, method of detecting intrusion-object and method of detecting malfunction
    Patent number: 7994912
    Abstract: A method determining a malfunction when a reception signal fluctuates at a receiver owing to malfunctions occurring on a leaky cable and its related devices. The method determines, among range bins correlating the reception signal with a distance from a feed end of a radio-wave radiation unit and a radio-wave reception unit, based on a correlation between a time-delay from a transmission time of a transmission signal until a reception time of the reception signal and a transmission path distance of the reception signal in the radio-wave radiation unit and the radio-wave reception unit, when, comparing the reception signal with the transmission signal with respect to the range bin corresponding to a far end, a level of amplitude reduction in the reception signal exceeds a predetermined ratio, that a malfunction is present in either the radio-wave radiation unit or radio-wave reception unit.
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: August 9, 2011
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kenji Inomata, Takashi Hirai, Syuji Aizawa, Noriyuki Miyake
  • INTRUSION-OBJECT DETECTION SYSTEM, METHOD OF DETECTING INTRUSION-OBJECT AND METHOD OF DETECTING MALFUNCTION
    Publication number: 20100238029
    Abstract: A method determining a malfunction when a reception signal fluctuates at a receiver owing to malfunctions occurring on a leaky cable and its related devices. The method determines, among range bins correlating the reception signal with a distance from a feed end of a radio-wave radiation unit and a radio-wave reception unit, based on a correlation between a time-delay from a transmission time of a transmission signal until a reception time of the reception signal and a transmission path distance of the reception signal in the radio-wave radiation unit and the radio-wave reception unit, when, comparing the reception signal with the transmission signal with respect to the range bin corresponding to a far end, a level of amplitude reduction in the reception signal exceeds a predetermined ratio, that a malfunction is present in either the radio-wave radiation unit or radio-wave reception unit.
    Type: Application
    Filed: January 12, 2006
    Publication date: September 23, 2010
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kenji Inomata, Takashi Hirai, Syuji Aizawa, Noriyuki Miyake