Patents by Inventor Kengo Nagata

Kengo Nagata 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).

  • Publication number: 20250088292
    Abstract: A wireless apparatus according to one aspect of the present invention includes an acquisition unit configured to acquire a communication quality index indicating communication quality of a link for each of a plurality of links forming a multi-link with another wireless apparatus; and a multi-link control unit configured to determine whether to suspend use of a first link having the lowest communication quality among the plurality of links based on comparison between the communication quality index for the first link and a first threshold.
    Type: Application
    Filed: January 28, 2022
    Publication date: March 13, 2025
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Hanae OTANI, Kengo NAGATA, Akira KISHIDA, Shoko SHINOHARA, Yusuke ASAI, Yasushi TAKATORI
  • Publication number: 20250031474
    Abstract: To provide a technique for improving image quality. A light detection apparatus includes: a semiconductor layer including a first surface and a second surface mutually positioned on opposite sides in a thickness direction; a plurality of photoelectric conversion regions provided on the semiconductor layer so as to be adjacent to each other via a separation region that stretches in the thickness direction of the semiconductor layer; a transistor provided for each of the photoelectric conversion regions on the side of the first surface of the semiconductor layer; and a transparent electrode which is provided on the side of the second surface of the semiconductor layer and to which a potential is applied. In addition, the separation region includes a conductor which stretches in the thickness direction of the semiconductor layer and the conductor is electrically connected on the side of the second surface of the semiconductor layer to the transparent electrode.
    Type: Application
    Filed: November 28, 2022
    Publication date: January 23, 2025
    Inventors: TAKAFUMI MORIKAWA, KENGO NAGATA, TOMOMI ITO, ATSUSHI MASAGAKI, KAZUYOSHI YAMASHITA, SHOTA MATSUYAMA, AKIRA DAICHO, KAZUHIRO YONEDA, JUNICHI MATSUO, YUTA NAKAMOTO, HIROSHI FUKUNAGA, KYOSUKE ITO, YUSUKE OTAKE, TOSHIFUMI WAKANO
  • Publication number: 20250024382
    Abstract: A terminal apparatus includes a determination unit and a transmission unit. The determination unit determines a target of transmission power regulation based on a beacon frame. The transmission unit, in a case where it is determined that the target of regulation is not a transmission power density, transmits a first frame in a first frequency band, and in a case where it is determined that the target of regulation is a transmission power density, transmits a second frame which is a duplicate of the first frame in a second frequency band while transmitting the first frame in the first frequency band.
    Type: Application
    Filed: August 18, 2021
    Publication date: January 16, 2025
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Akira KISHIDA, Kengo NAGATA, Shoko SHINOHARA, Hanae OTANI, Yusuke ASAI, Yasushi TAKATORI
  • Publication number: 20240430750
    Abstract: A wireless apparatus according to an aspect of the present invention includes a threshold determination unit that determines a threshold used for determining a usage state of a frequency channel, the threshold determination unit setting the threshold to a first value when a first priority that is a priority of a frame to be transmitted is a first priority level and setting the threshold to a second value higher than the first value when the first priority is a second priority level higher than the first priority level, and a carrier sense control unit that determines the usage state of the frequency channel based on a comparison between reception power of a frame detected on the frequency channel by carrier sense and the threshold.
    Type: Application
    Filed: August 18, 2021
    Publication date: December 26, 2024
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Hanae OTANI, Kengo NAGATA, Akira KISHIDA, Shoko SHINOHARA, Yusuke ASAI, Yasushi TAKATORI
  • Publication number: 20240421259
    Abstract: A light emitting device includes: a flip-chip type light emitting element; a sealing portion; and a lens as defined herein, the light emitting element includes an n-type layer, an active layer, an electron blocking layer, a composition gradient layer, a p-type contact layer, and a p-side electrode as defined herein, and a thickness of the composition gradient layer is set such that light directed from the active layer toward the n-type layer and light directed from the active layer toward a side opposite to the n-type layer and then reflected by the p-side electrode toward the n-type layer strengthen each other in a direction perpendicular to a main surface of the light emitting element due to interference.
    Type: Application
    Filed: June 13, 2024
    Publication date: December 19, 2024
    Inventors: Koji OKUNO, Yoshiki SAITO, Masaki OYA, Kengo NAGATA, Tetsuya TAKEUCHI, Satoshi KAMIYAMA, Motoaki IWAYA, Hisanori ISHIGURO, Rie IWATSUKI
  • Patent number: 12160797
    Abstract: A base station (10) according to an embodiment includes a data processing unit (101) and a wireless signal processing unit (103). The data processing unit (101) generates a MAC frame. The MAC frame includes input data and an identification bit (CB). The identification bit (CB) indicates that data is extended broadcast data. The wireless signal processing unit (103) converts the MAC frame into a wireless signal to distribute the wireless signal.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: December 3, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Yasuhiko Inoue, Shoko Shinohara, Akira Kishida, Kengo Nagata, Yusuke Asai, Yasushi Takatori
  • Publication number: 20240373213
    Abstract: A transmitting station includes a fragmentation unit, a packet number allocation unit, an encryption unit, a wireless signal processing unit, and a retransmission control unit. The fragmentation unit divides data into fragments. The packet number allocation unit allocates a first packet number to the fragments. The encryption unit encrypts the fragments on the basis of the first packet number. The wireless signal processing unit transmits the fragments encrypted as a wireless signal to a receiving station. When retransmitting the data, the retransmission control unit instructs the packet number allocation unit to reset the first packet number to an initial value, requests the receiving station to reset a second packet number managed by the receiving station to an initial value for decryption of the fragments encrypted, and instructs the fragmentation unit to reconfigure an unsuccessfully transmitted fragment.
    Type: Application
    Filed: August 30, 2021
    Publication date: November 7, 2024
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Akira KISHIDA, Kengo NAGATA, Shoko SHINOHARA, Hanae OTANI, Yusuke ASAI, Yasushi TAKATORI
  • Publication number: 20240340829
    Abstract: A transmitting station which is a station that transmits a wireless signal includes a first wireless signal processing unit, a second wireless signal processing unit, and a transmission timing adjustment unit. The first wireless signal processing unit transmits and receives a wireless signal using a first channel. The second wireless signal processing unit transmits and receives a wireless signal using a second channel different from the first channel. The transmission timing adjustment unit adjusts transmission timings of first data and second data on the basis of a first status associated with the first wireless signal processing unit and a second status associated with the second wireless signal processing unit.
    Type: Application
    Filed: August 18, 2021
    Publication date: October 10, 2024
    Inventors: Akira KISHIDA, Kengo NAGATA, Shoko SHINOHARA, Hanae OTANI, Yusuke ASAI, Yasushi TAKATORI
  • Publication number: 20240340685
    Abstract: An access point of an embodiment includes first and second wireless signal processing units and a link management unit. The link management unit establishes a multi-link with a first wireless terminal apparatus using the first and second wireless signal processing units. The link management unit is capable of setting at least the multi-link to a first operation mode and sets the first and second wireless signal processing units to an intermittent operation mode in the first operation mode. When the multi-link is set to the first operation mode and first data addressed to the first wireless terminal apparatus is input, the link management unit causes at least one wireless signal processing unit associated with a traffic identifier attached to the first data to transmit a beacon signal including information indicating that the first data has been buffered.
    Type: Application
    Filed: August 18, 2021
    Publication date: October 10, 2024
    Inventors: Akira KISHIDA, Kengo NAGATA, Shoko SHINOHARA, Hanae OTANI, Yusuke Asai, Yasushi TAKATORI
  • Patent number: 12087877
    Abstract: A light-emitting element includes a first n-type contact layer, a light-emitting layer that is located on the first n-type contact layer and emits light at a wavelength of not less than 210 nm and not more than 365 nm, a p-type layer that includes AlxGayIn1-x-yN (0?x+y?1, 0?x, y?1) and is located above the light-emitting layer, a second n-type contact layer that includes AlxGayIn1-x-yN (0?x+y?1, 0?x, y?1), is located on the p-type layer and forms a tunnel junction with the p-type layer, an n-electrode connected to the first n-type contact layer, and a p-electrode connected to the second n-type contact layer. Band gaps of the p-type layer and the second n-type contact layer are larger than a band gap of the light-emitting layer.
    Type: Grant
    Filed: February 1, 2022
    Date of Patent: September 10, 2024
    Assignee: TOYODA GOSEI CO., LTD.
    Inventor: Kengo Nagata
  • Patent number: 12032425
    Abstract: A data processing apparatus (14) according to an embodiment includes a data processing unit (105) and a wireless unit (104). The wireless unit receives the data converted by the data processing unit and wirelessly transmits the input data to an access point. The data processing unit converts, when a remaining amount input from a battery (12) is in a first state, the input data with a first setting and outputs the converted data to the wireless unit. The data processing unit converts, when the remaining amount of the battery is in a second state different from the first state, the input data with a second setting and outputs the converted data to the wireless unit. A capacity per unit time of the data after conversion is different between the first setting and the second setting.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: July 9, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Yasuhiko Inoue, Shoko Shinohara, Kengo Nagata, Yusuke Asai, Akira Kishida, Yasushi Takatori
  • Publication number: 20240205798
    Abstract: A base station of an embodiment includes a first wireless signal processing unit, a second wireless signal processing unit, and a beacon management unit. The first wireless signal processing unit is configured to be able to transmit and receive a wireless signal using a first channel. The second wireless signal processing unit is configured to be able to transmit and receive a wireless signal using a second channel different from the first channel. The beacon management unit manages transmission of a beacon of the first wireless signal processing unit so that the first beacon is periodically transmitted from the first radio signal processing unit, and manages transmission of a beacon of the second wireless signal processing unit so that the first beacon and a second beacon including information simplified than information included in the first beacon are periodically switched and transmitted from the second wireless signal processing unit.
    Type: Application
    Filed: April 19, 2021
    Publication date: June 20, 2024
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Akira KISHIDA, Yasuhiko INOUE, Kengo NAGATA, Yusuke ASAI, Yasushi TAKATORI
  • Publication number: 20240098819
    Abstract: A transmitting station (TX) of an embodiment includes first and second radio signal processing units (STA1 and STA2) and a link management unit (LM). The link management unit establishes multi-link with a receiving station by using the first and second radio signal processing units, and manages communication using the multi-link. The link management unit distributes a plurality of data units to the first and second radio signal processing units. The first radio signal processing unit transmits a first data unit group among the plurality of data units to the receiving station, and transmits first information indicating the sequence number of the data unit included in the first data unit group to the receiving station.
    Type: Application
    Filed: December 28, 2020
    Publication date: March 21, 2024
    Inventors: Akira KISHIDA, Yasuhiko INOUE, Kengo NAGATA, Yusuke ASAI, Yasushi TAKATORI
  • Publication number: 20240098783
    Abstract: A wireless apparatus according to one aspect of the present invention includes a reception unit configured to receive, on a frequency channel, a frame including first identification information for identifying the priority level of the frame, and a carrier sensing control unit configured to determine a threshold based on the first identification information, and determine a usage state of the frequency channel based on a comparison between received power of the frame and the determined threshold.
    Type: Application
    Filed: February 18, 2021
    Publication date: March 21, 2024
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Hanae OTANI, Akira KISHIDA, Kengo NAGATA, Yusuke ASAI, Yasuhiko INOUE, Yasushi TAKATORI
  • Patent number: 11916164
    Abstract: A method for manufacturing a light-emitting element includes providing the light-emitting element that includes a light-emitting layer with an emission wavelength of not more than 306 nm and a p-type layer including AlGaInN including Mg as an acceptor, and removing hydrogen in the p-type layer from the light-emitting element by irradiating the light-emitting element with ultraviolet light at a wavelength of not more than 306 nm from outside and treating the light-emitting element with heat in a state in which a reverse voltage, or a forward voltage lower than a threshold voltage of the light-emitting element, or no voltage is applied to the light-emitting element. The removing of hydrogen in the p-type layer from the light-emitting element is performed in a N2 atmosphere at not less than 650° C. or in a N2+O2 atmosphere at not less than 500° C.
    Type: Grant
    Filed: December 29, 2021
    Date of Patent: February 27, 2024
    Assignees: TOYODA GOSEI CO., LTD., MEIJO UNIVERSITY
    Inventors: Yoshiki Saito, Shinya Boyama, Shinichi Matsui, Hiroshi Miwa, Kengo Nagata, Tetsuya Takeuchi, Hisanori Ishiguro
  • Publication number: 20240064835
    Abstract: A transmitting station (TX) according to an embodiment includes first and second wireless signal processing units (STA1 and STA2) and a link management unit (LM). The first and second wireless signal processing units transmit wireless signals using first and second channels, respectively. The link management unit establishes multi-link with a receiving station. The link management unit manage communication in which the multi-link are used and store first information (TBM) indicating a sequence number of transmission target data. When second information (RBM) indicating the sequence number of the data received by the receiving station is received from the receiving station via the first or second wireless signal processing unit, the link management unit sets a bit corresponding to the sequence number indicated by the second information in the first information as a transmitted bit.
    Type: Application
    Filed: March 24, 2021
    Publication date: February 22, 2024
    Inventors: Akira KISHIDA, Kengo NAGATA, Yasuhiko INOUE, Yusuke ASAI, Yasushi TAKATORI
  • Publication number: 20240056884
    Abstract: A transmitting station (TX) of an embodiment includes first and second radio signal processing units (STA1 and STA2) and a link management unit (LM). The first and second radio signal processing units are configured to be able to transmit a radio signal using first and second channels, respectively, and store information indicating a sequence number of data to be transmitted. The link management unit establishes multi-link with the receiving station by using the first radio signal processing unit and the second radio signal processing unit, and manages communication using the multi-link. The link management unit distributes a plurality of data units to the first and second radio signal processing units. The first radio signal processing unit transmits a first data unit group input from the link management unit among the plurality of data units to the receiving station, and stores first information (TBM) indicating the sequence number of the data unit included in the first data unit group.
    Type: Application
    Filed: December 28, 2020
    Publication date: February 15, 2024
    Inventors: Yasuhiko INOUE, Kengo Nagata, Yusuke Asai, Yasushi TAKATORI, Akira KISHIDA
  • Patent number: 11855108
    Abstract: A solid-state imaging element which detects visible light and ultraviolet light in one pixel provides improved resolution. First and second photoelectric conversion elements each perform photoelectric conversion of incident light. A first accumulation part accumulates electric charges that are photoelectrically converted by the first photoelectric conversion element second accumulation part is disposed on one face of a substrate and accumulates electric charges that are photoelectrically converted by the second photoelectric conversion element. A connection part is connected to the second accumulation part and transfers the electric charges accumulated in the second accumulation part to another face of the substrate.
    Type: Grant
    Filed: September 2, 2019
    Date of Patent: December 26, 2023
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Satoko Iida, Yoshiaki Kitano, Kengo Nagata, Toshiaki Ono, Tomohiko Asatsuma
  • Publication number: 20230413347
    Abstract: A transmitting station includes a first wireless signal processing unit, a second wireless signal processing unit, and a link management unit. The first and second wireless signal processing units are configured to transmit wireless signals using different channels. The link management unit manages link states of the first and second wireless signal processing units. The link management unit is configured to: generate, when first data input is of a specific type, second data that is a duplicate of the first data; attach, first identification information indicating that the first data is original data, to the first data and attach, second identification information indicating that the second data is replicated data, to the second data; and output the first data with the first identification information attached to the first wireless signal processing unit and output the second data with the second identification information attached to the second wireless signal processing unit.
    Type: Application
    Filed: October 13, 2020
    Publication date: December 21, 2023
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Akira KISHIDA, Kengo NAGATA, Yasuhiko INOUE, Yusuke ASAI, Yasushi TAKATORI
  • Publication number: 20230379986
    Abstract: A wireless apparatus according to an embodiment of the present invention includes: first and second processing units configured to transmit and receive wireless signals using different channels; and a link management unit configured to manage a first link between the first processing unit and a terminal and a second link between the second processing unit and the terminal, in which the link management unit receives a request signal requesting data exchange relating to a first traffic identifier from the terminal, associates the first traffic identifier with the second link based on the request signal, and when a second traffic identifier different from the first traffic identifier is associated with the second link, changes the association of the second traffic identifier from the second link to the first link based on the request signal.
    Type: Application
    Filed: October 13, 2020
    Publication date: November 23, 2023
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Akira KISHIDA, Kengo NAGATA, Yasuhiko INOUE, Yusuke ASAI, Yasushi TAKATORI