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).
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Publication number: 20230319804Abstract: 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: ApplicationFiled: June 7, 2023Publication date: October 5, 2023Applicant: International Semiconductor GroupInventors: Tomoko ADACHI, Toshihisa NABETANI, Kiyoshi TOSHIMITSU, Tatsuma HIRANO
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Patent number: 11729746Abstract: According to one embodiment, a base station communicably connected to a wireless terminal is provided. The base station includes a processor and a transmitter. The processor is configured to acquire communication condition information indicating conditions of wireless communication with the wireless terminal. The transmitter is configured to transmit the communication condition information to a system managing a first network slice and a second network slice which can be used by the base station.Type: GrantFiled: March 1, 2021Date of Patent: August 15, 2023Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Haruka Obata, Toshihisa Nabetani, Tomoya Tandai, Miyuki Ogura, Tatsuma Hirano, Tsuyoshi Kogawa
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Patent number: 11706750Abstract: 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: GrantFiled: June 8, 2022Date of Patent: July 18, 2023Assignee: International Semiconductor GroupInventors: Tomoko Adachi, Toshihisa Nabetani, Kiyoshi Toshimitsu, Tatsuma Hirano
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Patent number: 11671214Abstract: According to one embodiment, a wireless communication apparatus includes transmitter circuitry, receiver circuitry and processing circuitry. The processing circuitry is configured to determine, based on a first acknowledgement frame and a second acknowledgement frame, a first data frame received by a first wireless communication apparatus and not received by a second wireless communication apparatus among data frames. The processing circuitry is configured to determine that the transmitter circuitry transmits at least one of the first data frame and a second data frame to the second wireless communication apparatus, and the first wireless communication apparatus transmits the first data frame to the second wireless communication apparatus.Type: GrantFiled: September 10, 2020Date of Patent: June 6, 2023Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Masahiro Sekiya, Toshihisa Nabetani, Tatsuma Hirano, Toshio Ariga
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Patent number: 11638317Abstract: According to one embodiment, an electronic apparatus includes a transmitter. The transmitter transmits data to be transmitted to a third wireless communication apparatus and a first wireless signal to instruct transmission of the data to the third wireless communication apparatus, to the first and second wireless communication apparatuses. The transmitter transmits, if any second wireless signal transmitted from the first or second wireless communication apparatuses is not detected within a first period after transmission of the first wireless signal, a third wireless signal to instruct transmission of the data to the third wireless communication apparatus to the first and second wireless communication apparatuses in order to instruct retransmission of the data.Type: GrantFiled: September 1, 2020Date of Patent: April 25, 2023Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Tatsuma Hirano, Toshio Ariga, Masahiro Sekiya, Toshihisa Nabetani
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Patent number: 11626939Abstract: According to one embodiment, a wireless apparatus determines a state of a first wireless link with a first mobile station and a state of a second wireless link with a second mobile station in a first communication mode, and transmits a first signal to the first and the second mobile stations in accordance with the states of the first and the second wireless links. In response to the first signal, the first communication mode is changed to a second communication mode in which the wireless apparatus communicates with the second mobile station via a direct communication between the first and the second mobile stations.Type: GrantFiled: March 10, 2021Date of Patent: April 11, 2023Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Miyuki Ogura, Toshihisa Nabetani, Tomoya Tandai, Tatsuma Hirano, Tsuyoshi Kogawa, Haruka Obata
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Publication number: 20230083380Abstract: According to one embodiment, a wireless relay device in a multi-hop network including at least a gateway device, the wireless relay device comprises a determination unit configured to determine whether a wireless device connected to the wireless relay device supports a routing protocol of the multi-hop network, and a notification unit configure to notify the gateway device or another wireless relay device in the multi-hop network of information for identifying the wireless device when the determination unit determines that the wireless device does not support the routing protocol.Type: ApplicationFiled: March 3, 2022Publication date: March 16, 2023Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Takaomi MURAKAMI, Miyuki OGURA, Tatsuma HIRANO, Toshihisa NABETANI
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Publication number: 20230073722Abstract: According to one embodiment, a wireless device includes an identification information generation unit, a framing unit, and a transmission unit. The identification information generation unit generates identification information for identifying a packet among all other flooding packets to be relayed on the wireless network by arithmetic processing. The framing unit generates a wireless frame when a packet is transmitted to another wireless device as an origin node. The wireless frame includes the packet and the identification information generated by the identification information generation unit. The transmission unit transmits the wireless frame including the packet and the identification information generated by the identification information generation unit.Type: ApplicationFiled: February 28, 2022Publication date: March 9, 2023Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Miyuki OGURA, Masahiro SEKIYA, Takaomi MURAKAMI, Toshihisa NABETANI, Tatsuma HIRANO
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Publication number: 20230054227Abstract: According to one embodiment, an authentication device includes a memory and a processor. The memory stores a private key used for wireless communication executed by using each of network slices. The processor transmits a first random number for updating a first private key used for the wireless communication executed by using a first network slice and use start timing information regarding use start timing of the updated first private key to the wireless communication device by using a second network slice. The first private key updated based on the first random number is stored in the memory, and used for the wireless communication between a base station and the wireless communication device based on the use start timing.Type: ApplicationFiled: February 24, 2022Publication date: February 23, 2023Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Tatsuma HIRANO, Miyuki OGURA, Toshihisa NABETANI
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Patent number: 11503463Abstract: According to one embodiment, a wireless communication apparatus includes a transmitter. The transmitter transmits, in a first period, a first information frame. The first information frame includes first, verification information and a first key usable in the first period. The transmitter transmits, in the first period and after transmitting the first information frame, a data frame including first data. The transmitter transmits, in the first period and after transmitting the first information frame, a second information frame. The data frame includes a fourth key usable in a second period following the first period. The transmitter transmits, in the second period, a third information frame including third verification information and the fourth key.Type: GrantFiled: March 1, 2021Date of Patent: November 15, 2022Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Tatsuma Hirano, Masahiro Sekiya, Toshihisa Nabetani
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Publication number: 20220303993Abstract: 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: ApplicationFiled: June 8, 2022Publication date: September 22, 2022Applicant: TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventors: Tomoko ADACHI, Toshihisa NABETANI, Kiyoshi TOSHIMITSU, Tatsuma HIRANO
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Patent number: 11363595Abstract: 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: GrantFiled: September 17, 2018Date of Patent: June 14, 2022Assignee: TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATIONInventors: Tomoko Adachi, Toshihisa Nabetani, Kiyoshi Toshimitsu, Tatsuma Hirano
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Publication number: 20220038205Abstract: According to one embodiment, a wireless apparatus determines a state of a first wireless link with a first mobile station and a state of a second wireless link with a second mobile station in a first communication mode, and transmits a first signal to the first and the second mobile stations in accordance with the states of the first and the second wireless links. In response to the first signal, the first communication mode is changed to a second communication mode in which the wireless apparatus communicates with the second mobile station via a direct communication between the first and the second mobile stations.Type: ApplicationFiled: March 10, 2021Publication date: February 3, 2022Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Miyuki OGURA, Toshihisa NABETANI, Tomoya TANDAI, Tatsuma HIRANO, Tsuyoshi KOGAWA, Haruka OBATA
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Publication number: 20210360396Abstract: According to one embodiment, a wireless communication apparatus includes a transmitter. The transmitter transmits, in a first period, a first information frame. The first information frame includes first, verification information and a first key usable in the first period. The transmitter transmits, in the first period and after transmitting the first information frame, a data frame including first data. The transmitter transmits, in the first period and after transmitting the first information frame, a second information frame. The data frame includes a fourth key usable in a second period following the first period. The transmitter transmits, in the second period, a third information frame including third verification information and the fourth key.Type: ApplicationFiled: March 1, 2021Publication date: November 18, 2021Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Tatsuma HIRANO, Masahiro SEKIYA, Toshihisa NABETANI
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Publication number: 20210352630Abstract: According to one embodiment, a base station communicably connected to a wireless terminal is provided. The base station includes a processor and a transmitter. The processor is configured to acquire communication condition information indicating conditions of wireless communication with the wireless terminal. The transmitter is configured to transmit the communication condition information to a system managing a first network slice and a second network slice which can be used by the base station.Type: ApplicationFiled: March 1, 2021Publication date: November 11, 2021Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Haruka OBATA, Toshihisa NABETANI, Tomoya TANDAI, Miyuki OGURA, Tatsuma HIRANO, Tsuyoshi KOGAWA
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Publication number: 20210226746Abstract: According to one embodiment, a wireless communication apparatus includes transmitter circuitry, receiver circuitry and processing circuitry. The processing circuitry is configured to determine, based on a first acknowledgement frame and a second acknowledgement frame, a first data frame received by a first wireless communication apparatus and not received by a second wireless communication apparatus among data frames. The processing circuitry is configured to determine that the transmitter circuitry transmits at least one of the first data frame and a second data frame to the second wireless communication apparatus, and the first wireless communication apparatus transmits the first data frame to the second wireless communication apparatus.Type: ApplicationFiled: September 10, 2020Publication date: July 22, 2021Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Masahiro SEKIYA, Toshihisa NABETANI, Tatsuma HIRANO, Toshio ARIGA
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Publication number: 20210127441Abstract: According to one embodiment, an electronic apparatus includes a transmitter. The transmitter transmits data to be transmitted to a third wireless communication apparatus and a first wireless signal to instruct transmission of the data to the third wireless communication apparatus, to the first and second wireless communication apparatuses. The transmitter transmits, if any second wireless signal transmitted from the first or second wireless communication apparatuses is not detected within a first period after transmission of the first wireless signal, a third wireless signal to instruct transmission of the data to the third wireless communication apparatus to the first and second wireless communication apparatuses in order to instruct retransmission of the data.Type: ApplicationFiled: September 1, 2020Publication date: April 29, 2021Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Tatsuma HIRANO, Toshio ARIGA, Masahiro SEKIYA, Toshihisa NABETANI
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Publication number: 20210084563Abstract: According to one embodiment, an electronic apparatus includes processor circuitry and transmission circuitry. The processor circuitry is configured to acquire information regarding a movement direction and a movement speed of the electronic apparatus, information regarding a movement direction and a movement speed of the first wireless relay apparatus, and information regarding a movement direction and a movement speed of the second wireless relay apparatus, select a relay destination of data from the first wireless relay apparatus and the second wireless relay apparatus based on the movement direction and the movement speed of the electronic apparatus, the first wireless relay apparatus, and the second wireless relay apparatus.Type: ApplicationFiled: March 3, 2020Publication date: March 18, 2021Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Miyuki OGURA, Tatsuma HIRANO
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Patent number: 10447349Abstract: 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: GrantFiled: July 6, 2017Date of Patent: October 15, 2019Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Takahiro Sekiguchi, Noritaka Deguchi, Tatsuma Hirano, Makoto Higaki, Kazuhiro Inoue
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Patent number: 10417068Abstract: 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: GrantFiled: February 23, 2017Date of Patent: September 17, 2019Assignee: Kabushiki Kaisha ToshibaInventors: Tatsuma Hirano, Takahiro Sekiguchi