Patents by Inventor Koichiro Okayama

Koichiro Okayama 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: 9419690
    Abstract: A method for selection of a received telegram in a train wireless communications system including a plurality of wireless base stations situated along the train tracks, for respectively communicating with a higher level device through a wired circuit, and at least one terminal having at least two or more antennas installed in cars of the train moving down the track, during a predetermined transmission interval of a downstream telegram received from a higher level device, the wireless base station twice transmits telegrams that include at least identical content; the terminal, using the plurality of antennas, receives the telegrams transmitted by the wireless base station, selects the received telegram having the best reception from among those received by the plurality of antennas as the received telegram, and transmits a response telegram to the wireless base station, in response to the telegram received from the wireless base station.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: August 16, 2016
    Assignee: Hitachi Kokusai Electric Inc.
    Inventor: Koichiro Okayama
  • Publication number: 20150256232
    Abstract: A method for selection of a received telegram in a train wireless communications system including a plurality of wireless base stations situated along the train tracks, for respectively communicating with a higher level device through a wired circuit, and at least one terminal having at least two or more antennas installed in cars of the train moving down the track, during a predetermined transmission interval of a downstream telegram received from a higher level device, the wireless base station twice transmits telegrams that include at least identical content; the terminal, using the plurality of antennas, receives the telegrams transmitted by the wireless base station, selects the received telegram having the best reception from among those received by the plurality of antennas as the received telegram, and transmits a response telegram to the wireless base station, in response to the telegram received from the wireless base station.
    Type: Application
    Filed: August 26, 2013
    Publication date: September 10, 2015
    Applicant: HITACHI KOKUSAI ELECTRIC INC.
    Inventor: Koichiro Okayama