Patents by Inventor Tatsuma Hirano

Tatsuma Hirano 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: 10447349
    Abstract: A wireless communication system includes a first tag installed on a ground outside a track for a running train, the first tag being driven by wirelessly received power, a second tag installed outside a side face of the train and above the first tag, the side face extending in a running direction, the second tag being driven by wirelessly received power, a wireless communicator which is installed in the train and performs wireless communication with the first tag and the second tag, and an antenna which is installed in the train and has a gain in directions of the first tag and the second tag.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: October 15, 2019
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takahiro Sekiguchi, Noritaka Deguchi, Tatsuma Hirano, Makoto Higaki, Kazuhiro Inoue
  • Patent number: 10417068
    Abstract: An information processing apparatus includes a receiving unit and a determining unit. The receiving unit receives read information that is read by a reading unit from a storage medium a plurality of number of times. The determining unit determines abnormality in a reading process performed by the reading unit, based on a first result acquired by comparing a time interval of reading the read information with a first threshold, or on a second result acquired by comparing the number of times the reading is performed with a second threshold.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: September 17, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tatsuma Hirano, Takahiro Sekiguchi
  • Patent number: 10231231
    Abstract: One of a plurality of radio terminals that transmit radio signals to a radio base station under a space multiplexing scheme, including a receiving unit that receives an access right request signal with respect to the radio base station from an other radio terminal, a prevention unit that prevents transmission of radio signals when receiving radio signals directed to an other radio terminal, a cancellation unit that cancels the prevention of transmission when receiving an access right assignment signal during the prevention of transmission and a transmitting unit that transmits a data signal to the radio base station according to the assignment signal, wherein radio signals are transmitted to the radio base station simultaneously with the other radio terminals and under the space multiplexing scheme.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: March 12, 2019
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Ryoko Matsuo, Tatsuma Hirano, Toshihisa Nabetani, Tomoko Adachi, Kiyoshi Toshimitsu
  • Publication number: 20190037570
    Abstract: A wireless communication apparatus which can simultaneously conduct communication on at least two frequency channels is described. The apparatus includes a communication unit which refers to a connection management table to determine a communication system which can be used by a wireless communication terminal using an identifier of the wireless communication terminal, and conducts communication with the wireless communication terminal on a second frequency channel using the communication system, when a request from the wireless communication terminal to change the first frequency channel to the second frequency channel is permitted.
    Type: Application
    Filed: September 17, 2018
    Publication date: January 31, 2019
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoko ADACHI, Toshihisa NABETANI, Kiyoshi TOSHIMITSU, Tatsuma HIRANO
  • Patent number: 10111227
    Abstract: A wireless communication apparatus which can simultaneously conduct communication on at least two frequency channels is described. The apparatus includes a communication unit which refers to a connection management table to determine a communication system which can be used by a wireless communication terminal using an identifier of the wireless communication terminal, and conducts communication with the wireless communication terminal on a second frequency channel using the communication system, when a request from the wireless communication terminal to change the first frequency channel to the second frequency channel is permitted.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: October 23, 2018
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoko Adachi, Toshihisa Nabetani, Kiyoshi Toshimitsu, Tatsuma Hirano
  • Publication number: 20180067792
    Abstract: An information processing apparatus includes a receiving unit and a determining unit. The receiving unit receives read information that is read by a reading unit from a storage medium a plurality of number of times. The determining unit determines abnormality in a reading process performed by the reading unit, based on a first result acquired by comparing a time interval of reading the read information with a first threshold, or on a second result acquired by comparing the number of times the reading is performed with a second threshold.
    Type: Application
    Filed: February 23, 2017
    Publication date: March 8, 2018
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Tatsuma HIRANO, Takahiro Sekiguchi
  • Publication number: 20180054785
    Abstract: A wireless communication apparatus includes a transmitter that transmits a first frame and a second frame with multiplexing and a receiver that receives a third frame sent in response to the first frame and a forth frame sent in response to the second frame, wherein a first receipt completion timing at which the third frame is fully received by the receiver and a second receipt completion timing at which the forth frame is fully received by the receiver are synchronized by controlling at least one of first content of the first frame, a first transmission method by which the first frame is sent, second content of the second frame and a second transmission method by which the second frame is sent.
    Type: Application
    Filed: October 18, 2017
    Publication date: February 22, 2018
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Toshihisa NABETANI, Kiyoshi TOSHIMITSU, Tomoko ADACHI, Ryoko MATSUO, Tatsuma HIRANO
  • Patent number: 9826492
    Abstract: A wireless communication apparatus includes a transmitter that transmits a first frame and a second frame with multiplexing and a receiver that receives a third frame sent in response to the first frame and a forth frame sent in response to the second frame, wherein a first receipt completion timing at which the third frame is fully received by the receiver and a second receipt completion timing at which the forth frame is fully received by the receiver are synchronized by controlling at least one of first content of the first frame, a first transmission method by which the first frame is sent, second content of the second frame and a second transmission method by which the second frame is sent.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: November 21, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Toshihisa Nabetani, Kiyoshi Toshimitsu, Tomoko Adachi, Ryoko Matsuo, Tatsuma Hirano
  • Publication number: 20170310368
    Abstract: A wireless communication system includes a first tag installed on a ground outside a track for a running train, the first tag being driven by wirelessly received power, a second tag installed outside a side face of the train and above the first tag, the side face extending in a running direction, the second tag being driven by wirelessly received power, a wireless communicator which is installed in the train and performs wireless communication with the first tag and the second tag, and an antenna which is installed in the train and has a gain in directions of the first tag and the second tag.
    Type: Application
    Filed: July 6, 2017
    Publication date: October 26, 2017
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takahiro SEKIGUCHI, Noritaka DEGUCHI, Tatsuma HIRANO, Makoto HIGAKI, Kazuhiro INOUE
  • Publication number: 20170290093
    Abstract: A wireless communication apparatus which can simultaneously conduct communication on at least two frequency channels is described. The apparatus includes a communication unit which refers to a connection management table to determine a communication system which can be used by a wireless communication terminal using an identifier of the wireless communication terminal, and conducts communication with the wireless communication terminal on a second frequency channel using the communication system, when a request from the wireless communication terminal to change the first frequency channel to the second frequency channel is permitted.
    Type: Application
    Filed: June 14, 2017
    Publication date: October 5, 2017
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoko ADACHI, Toshihisa NABETANI, Kiyoshi TOSHIMITSU, Tatsuma HIRANO
  • Patent number: 9730142
    Abstract: A wireless communication device transmits data to a relay destination being one of first relaying devices capable of communicating out of relaying devices; obtains first information, from each first relaying device, that indicates a representative value of remaining operating times of relaying devices present on a relay route from the first relaying device to a target device; determines to perform a new route search, based on the first information; increases a transmission power; then transmits a request; receive responses from all or a part of second relaying devices, which are relaying devices that have received the request, including pieces of second information each of which indicates a representative value of remaining operating times of relaying devices present on a relay route from the second relaying device to the target device; and selects a relay destination of data from among the second relaying devices based on the pieces of second information.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: August 8, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takaomi Murakami, Shinya Murai, Takeshi Ishihara, Ren Sakata, Cam Ly Nguyen, Tatsuma Hirano, Toshiyuki Nakanishi, Keiji Yamamoto
  • Patent number: 9713152
    Abstract: A wireless communication apparatus which can simultaneously conduct communication on at least two frequency channels is described. The apparatus includes a communication unit which refers to a connection management table to determine a communication system which can be used by a wireless communication terminal using an identifier of the wireless communication terminal, and conducts communication with the wireless communication terminal on a second frequency channel using the communication system, when a request from the wireless communication terminal to change the first frequency channel to the second frequency channel is permitted.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: July 18, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoko Adachi, Toshihisa Nabetani, Kiyoshi Toshimitsu, Tatsuma Hirano
  • Patent number: 9699707
    Abstract: According to an embodiment, a calculation method is for performing calculation on a wireless network including multiple terminals and multiple base stations. The method includes calculating a first probability with which a first base station and a second terminal are capable of connection with (h?1) hops, h being a finite integer equal to or larger than 2, and a first terminal and the second terminal are capable of direct connection with each other, by using a probability with which the first terminal and the second terminal are capable of direct connection with each other and a probability with which the second terminal and the first base station are capable of direct connection with each other; and calculating a second probability with which the first terminal is capable of connection with at least one of the base stations with h hops by using the first probability.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: July 4, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Cam Ly Nguyen, Hiroyuki Kitagawa, Tatsuma Hirano, Ren Sakata
  • Patent number: 9648590
    Abstract: A communication device includes a receiver, a transmitter and an interruption module. The receiver receives an allocation signal indicating a first period usable by the communication device and a second period usable by a plurality of communication devices including the communication device. The transmitter transmits a transmission signal in the first period. If the transmission of the transmission signal is completed within the first period, the interruption module interrupts at least a part of power supply to the receiver in the second period. If the transmission of the transmission signal is not completed within the first period and directivity of radio waves used by a second communication device includes a direction of the communication device in a communication period allocated before the second period, the transmitter transmits the transmission signal in the second period.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: May 9, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tetsu Nakajima, Tomoko Adachi, Kiyoshi Toshimitsu, Tatsuma Hirano, Yoriko Utsunomiya
  • Publication number: 20170118730
    Abstract: A wireless communication apparatus includes a transmitter that transmits a first frame and a second frame with multiplexing and a receiver that receives a third frame sent in response to the first frame and a forth frame sent in response to the second frame, wherein a first receipt completion timing at which the third frame is fully received by the receiver and a second receipt completion timing at which the forth frame is fully received by the receiver are synchronized by controlling at least one of first content of the first frame, a first transmission method by which the first frame is sent, second content of the second frame and a second transmission method by which the second frame is sent.
    Type: Application
    Filed: January 5, 2017
    Publication date: April 27, 2017
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Toshihisa NABETANI, Kiyoshi TOSHIMITSU, Tomoko ADACHI, Ryoko MATSUO, Tatsuma HIRANO
  • Patent number: 9565644
    Abstract: A wireless communication apparatus includes a transmitter that transmits a first frame and a second frame with multiplexing and a receiver that receives a third frame sent in response to the first frame and a forth frame sent in response to the second frame, wherein a first receipt completion timing at which the third frame is fully received by the receiver and a second receipt completion timing at which the forth frame is fully received by the receiver are synchronized by controlling at least one of first content of the first frame, a first transmission method by which the first frame is sent, second content of the second frame and a second transmission method by which the second frame is sent.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: February 7, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Toshihisa Nabetani, Kiyoshi Toshimitsu, Tomoko Adachi, Ryoko Matsuo, Tatsuma Hirano
  • Patent number: 9307533
    Abstract: A wireless communication apparatus which can simultaneously conduct communication on at least two frequency channels is described. The apparatus includes a communication unit which refers to a connection management table to determine a communication system which can be used by a wireless communication terminal using an identifier of the wireless communication terminal, and conducts communication with the wireless communication terminal on a second frequency channel using the communication system, when a request from the wireless communication terminal to change the first frequency channel to the second frequency channel is permitted.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: April 5, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tomoko Adachi, Toshihisa Nabetani, Kiyoshi Toshimitsu, Tatsuma Hirano
  • Publication number: 20160088629
    Abstract: A wireless communication apparatus which can simultaneously conduct communication on at least two frequency channels is described. The apparatus includes a communication unit which refers to a connection management table to determine a communication system which can be used by a wireless communication terminal using an identifier of the wireless communication terminal, and conducts communication with the wireless communication terminal on a second frequency channel using the communication system, when a request from the wireless communication terminal to change the first frequency channel to the second frequency channel is permitted.
    Type: Application
    Filed: December 3, 2015
    Publication date: March 24, 2016
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoko Adachi, Toshihisa Nabetani, Kiyoshi Toshimitsu, Tatsuma Hirano
  • Publication number: 20160007305
    Abstract: A wireless communication apparatus includes a transmitter that transmits a first frame and a second frame with multiplexing and a receiver that receives a third frame sent in response to the first frame and a forth frame sent in response to the second frame, wherein a first receipt completion timing at which the third frame is fully received by the receiver and a second receipt completion timing at which the forth frame is fully received by the receiver are synchronized by controlling at least one of first content of the first frame, a first transmission method by which the first frame is sent, second content of the second frame and a second transmission method by which the second frame is sent.
    Type: Application
    Filed: September 15, 2015
    Publication date: January 7, 2016
    Inventors: Toshihisa Nabetani, Kiyoshi Toshimitsu, Tomoko Adachi, Ryoko Matsuo, Tatsuma Hirano
  • Publication number: 20160007330
    Abstract: One of a plurality of radio terminals that transmit radio signals to a radio base station under a space multiplexing scheme, including a receiving unit that receives an access right request signal with respect to the radio base station from an other radio terminal, a prevention unit that prevents transmission of radio signals when receiving radio signals directed to an other radio terminal, a cancellation unit that cancels the prevention of transmission when receiving an access right assignment signal during the prevention of transmission and a transmitting unit that transmits a data signal to the radio base station according to the assignment signal, wherein radio signals are transmitted to the radio base station simultaneously with the other radio terminals and under the space multiplexing scheme.
    Type: Application
    Filed: September 11, 2015
    Publication date: January 7, 2016
    Inventors: Ryoko Matsuo, Tatsuma Hirano, Toshihisa Nabetani, Tomoko Adachi, Kiyoshi Toshimitsu