Patents by Inventor Hiroyuki Somiya

Hiroyuki Somiya 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).

  • Obstacle detection device and obstacle detection system
    Patent number: 6424289
    Abstract: An obstacle detection system includes a leaky transmission path, a leaky receiving path opposite to the leaky transmission path, a spread spectrum signal generator connected to an end of the leaky transmission path and generating a spread spectrum signal for radiation from the leaky transmission path to detect an obstacle. A correlator is connected to an end of the leaky receiving path to calculate a level of correlation between a reference spread spectrum signal and a spread spectrum signal received by the leaky receiving path. A detector detects an obstacle in accordance with a change in the level of correlation calculated by the correlator.
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: July 23, 2002
    Assignees: Mitsubishi Denki Kabushiki Kaisha, Central Japan Railway Company
    Inventors: Tadamasa Fukae, Kenji Morihara, Takashi Kawakami, Hiroyuki Somiya
  • Obstacle detection device and obstacle detection system
    Publication number: 20010052871
    Abstract: An obstacle detection includes a transmission leakage transmission path, a receiving leakage transmission path opposite to the transmission leakage transmission path, a spread spectrum signal generation means connected to an end of the transmission leakage transmission path and generating a spread spectrum signal for detection of an obstacle for radiation from the transmission leakage transmission path. A correlation means is connected to an end of the receiving leakage transmission path so as to calculate a level of correlation between a reference spread spectrum signal and a spread spectrum signal received by the receiving leakage transmission path. A detecting means detects an obstacle in accordance with a change in the level of correlation calculated by the correlation means.
    Type: Application
    Filed: June 1, 2001
    Publication date: December 20, 2001
    Inventors: Tadamasa Fukae, Kenji Morihara, Takashi Kawakami, Hiroyuki Somiya