Patents by Inventor Takafumi Tanaka

Takafumi Tanaka 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: 11001338
    Abstract: A bicycle electric component comprises a wireless communicator, a power source, and a switcher. The wireless communicator is configured to receive a wireless signal. The power source is configured to supply a first electric power to the wireless communicator. The switcher is configured to change an electric connection state between the wireless communicator and the power source. The switcher includes an electric generator configured to generate a second electric power by an external input to a bicycle.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: May 11, 2021
    Assignee: SHIMANO INC.
    Inventors: Takafumi Suzuki, Takaya Masuda, Toshihiko Takahashi, Masafumi Tanaka
  • Publication number: 20210132418
    Abstract: This eyewear comprises: a frame; an input unit which is disposed in the frame and accepts a first instruction operation and a second instruction operation that are different from each other; an optical module which is held in the frame and has an optical characteristic that changes by electric control; and a control unit which changes the optical characteristic of the optical module by selectively executing an upper-class function by the first instruction operation, and selectively executing a lower-class function by the second instruction operation. Consequently, the eyewear enabling execution of a larger number of functions with a simpler manipulation can be provided.
    Type: Application
    Filed: February 20, 2018
    Publication date: May 6, 2021
    Inventors: Akihiro MURAMATSU, Yoshinobu OKADA, Eiichiro HIKOSAKA, Akifumi AONO, Ryuki KAN, Takafumi OHTO, Sho TANAKA
  • Patent number: 10995844
    Abstract: In a breather structure of a transmission, a gear chamber of the transmission is disposed between an engine and an electric motor control device for an electric motor, and a breather piping is inserted into a breather hole in an upper wall of the gear chamber. When viewed from above, in a vehicle width direction, a part of an intake system member and the electric power control device are overlapped together, and a part of the intake system member and the gear chamber are overlapped together. Therefore, a direction of water splashed up from a road surface and flowing forward is changed downward so that the breather hole is easily covered with water. However, since an atmosphere opening part of the breather piping is disposed above the electric motor chamber, even if the breather hole is covered with water, a breather function is not lost.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: May 4, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Hiroyuki Kita, Takafumi Maruyama, Katsuhisa Tanaka
  • Publication number: 20210126707
    Abstract: A communication system transmits relay data through a communication path including a plurality of sections in which different communication schemes are used. A relay communication device is provided between a first section and a second section which are adjacent sections. The relay communication device includes a receiving unit receiving the relay data from the first section through a frame of a first communication scheme, and a relaying unit configuring, in a frame of a second communication scheme used to transmit the relay data to a relay destination, signal quality information representing signal quality calculated for a physical link in each of the sections through which the relay data is transmitted before arriving at the relay communication device, and outputting the frame of the second communication scheme to the second section.
    Type: Application
    Filed: June 5, 2019
    Publication date: April 29, 2021
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takafumi TANAKA, Shokei KOBAYASHI, Seiki KUWABARA, Yoshiaki YAMADA
  • Publication number: 20210028857
    Abstract: There is provided an optical transmission system in which a plurality of optical transmission and reception apparatuses perform 1-to-N transmission and reception of optical signals (N is an integer equal to or greater than 1), the optical transmission system being configured to select a communication condition that includes at least a modulation scheme or a baud rate and is a communication condition when each of the optical transmission and reception apparatuses performs transmission and reception in accordance with a transmission line condition that is between any one first optical transmission and reception apparatus and each of second optical transmission and reception apparatuses, which are N grounds, other than the first optical transmission and reception apparatus.
    Type: Application
    Filed: March 1, 2019
    Publication date: January 28, 2021
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Fumikazu INUZUKA, Shokei KOBAYASHI, Akira HIRANO, Wataru KAWAKAMI, Tetsuro INUI, Seiki KUWABARA, Kei KITAMURA, Takafumi TANAKA, Takuya ODA, Hideki NISHIZAWA, Seiji OKAMOTO
  • Publication number: 20210013963
    Abstract: A state estimating device includes a pre-processing unit and an estimating unit. The pre-processing unit acquires data representing at one or more of a phase of a signal transmitted from a transmission unit of a transmission device and received at a reception unit of another transmission device via a transmission path, a reception strength, a reception quality, a voltage after conversion into an electric signal, and a signal processing parameter used in reception processing, and processes the acquired data into feature data to be used for state estimation. The estimating unit estimates a state of the transmission path, an abnormal state of the transmission unit, or an abnormal state of the reception unit, on the basis of the feature data.
    Type: Application
    Filed: February 13, 2019
    Publication date: January 14, 2021
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Seiki KUWABARA, Wataru KAWAKAMI, Hideki NISHIZAWA, Seiji OKAMOTO, Akira HIRANO, Shokei KOBAYASHI, Tetsuro INUI, Takuya ODA, Fumikazu INUZUKA, Takafumi TANAKA
  • Patent number: 10686520
    Abstract: A transmission quality estimation system includes, three or more nodes and a transmission quality estimation device configured to estimate, transmission quality. A multi-core fiber having a plurality of cores, the multi-core fiber being used in at least a partial segment of a connection between the nodes. A node of the nodes includes a core connection unit configured to drop, add or relay light transmitted from, to or to each of to the plurality of cores of the multi-core fiber. The transmission quality estimation device includes an estimation unit configured to estimate transmission quality between the nodes on the basis of a transmission quality measurement light dropped by the core connection unit.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: June 16, 2020
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takuya Oda, Tetsuro Inui, Akira Hirano, Wataru Imajuku, Shoukei Kobayashi, Takafumi Tanaka, Yutaka Miyamoto, Hidehiko Takara
  • Patent number: 10637568
    Abstract: A transmission quality estimation system includes, three or more nodes and a transmission quality estimation device configured to estimate, transmission quality. A multi-core fiber having a plurality of cores, the multi-core fiber being used in at least a partial segment of a connection between the nodes. A node of the nodes includes a core connection unit configured to drop, add or relay light transmitted from, to or to each of to the plurality of cores of the multi-core fiber. The transmission quality estimation device includes an estimation unit configured to estimate transmission quality between the nodes on the basis of a transmission quality measurement light dropped by the core connection unit.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: April 28, 2020
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takuya Oda, Tetsuro Inui, Akira Hirano, Wataru Imajuku, Shoukei Kobayashi, Takafumi Tanaka, Yutaka Miyamoto, Hidehiko Takara
  • Patent number: 10615868
    Abstract: A communication system which includes: three or more nodes; a multi-core fiber having a plurality of cores, the multi-core fiber being used in at least a partial segment of a connection between the nodes; a detection signal output unit configured to output a fault detection signal transmitted by the core provided in the multi-core fiber configured to connect together the nodes; and a fault detection unit configured to determine whether a fault has occurred between the nodes on the basis of a detection result of the fault detection signal.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: April 7, 2020
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takuya Oda, Tetsuro Inui, Akira Hirano, Wataru Imajuku, Shoukei Kobayashi, Takafumi Tanaka, Yutaka Miyamoto, Hidehiko Takara
  • Patent number: 10587472
    Abstract: Accommodation design for wavelength and sub-? paths in a communication network is performed. If sub-? path accommodation is possible according to search for a wavelength path present in a single-hop logical route, the accommodation in the wavelength path is executed. If sub-? path accommodation is possible according to search for a wavelength path present in a multi-hop logical route, a logical route is selected based on the wavelength path and the sub-? path is accommodated in the wavelength path. Additionally, each physical route suitable for the sub-? path accommodation is searched for. If the route can accommodate a wavelength path set in a single-hop logical route by available wavelength allocation, the sub-? path is accommodated in the wavelength path. Furthermore, routes in consideration of overlapping of nodes, pipelines, and links and operation rate are selected based on information about the start and end nodes of each of redundant routes.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: March 10, 2020
    Assignee: Nippon Telegraph And Telephone Corporation
    Inventors: Akihiro Kadohata, Akira Hirano, Atsushi Watanabe, Fumikazu Inuzuka, Takafumi Tanaka
  • Publication number: 20200016570
    Abstract: Provided is a particulate alkaline earth metal ion adsorbent having a large adsorption capacity. The particulate alkaline earth metal ion adsorbent comprising: a potassium hydrogen dititanate hydrate represented by a chemical formula K2-xHxO.2TiO2.nH2O, wherein x is 0.5 or more and 1.3 or less, and n is greater than 0; and no binder, wherein the particulate alkaline earth metal ion adsorbent has a particle size range of 150 ?m or more and 1000 ?m or less.
    Type: Application
    Filed: March 1, 2018
    Publication date: January 16, 2020
    Inventors: Takashi SAKUMA, Makoto KOMATSU, Takeshi IZUMI, Takayasu TANAKA, Takafumi TANAKA, Hidenori ISHIOKA, Ayaka ANDO, Tomoko YOSHIMI, Nobuyuki HASHIMOTO, Hiroaki UCHIDA, Shigeru NAGAOKA
  • Patent number: 10527781
    Abstract: A communication system includes three or more nodes and a multi-core fiber having a plurality of cores, the multi-core fiber being used in at least a partial segment of the connection between the nodes is provided. One node of the nodes is connected to the multi-core fiber and includes a connector configured to add and drop a signal to and from an allocated core exclusively allocated from among the cores as a communication path between the one node and another node of the nodes and/or configured to relay a signal transmitted through another core of the cores allocated for communication between other nodes in the multi-core fiber connected to the one node, and a relative positional relationship between a connection position of the allocated core in which a signal is added or dropped in the connector and a connection position of another core in which a signal is relayed in the connector is the same for all of the nodes connected to the multi-core fiber.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: January 7, 2020
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takuya Oda, Tetsuro Inui, Akira Hirano, Wataru Imajuku, Shoukei Kobayashi, Takafumi Tanaka, Yutaka Miyamoto, Hidehiko Takara
  • Patent number: 10511381
    Abstract: A communication system includes three or more nodes, and a multi-core fiber having a plurality of cores, the multi-core fiber being used in at least a partial segment of a connection between the nodes, wherein each of nodes includes: a fault information transmitting device configured to transmit fault information indicating that a fault has occurred in a communication path between one node and another node of the nodes when it is detected that it is not possible to perform communication between the one node and the another node; and a fault location specifying device configured to specify a section between nodes in which a fault has occurred on the basis of the fault information received from the fault information transmitting device provided in each of the nodes.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: December 17, 2019
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takuya Oda, Tetsuro Inui, Akira Hirano, Wataru Imajuku, Shoukei Kobayashi, Takafumi Tanaka, Yutaka Miyamoto, Hidehiko Takara
  • Patent number: 10306177
    Abstract: According to one embodiment, an electronic apparatus includes a display, a support part which supports the display, and an opposed part which is opposed to at least part of the support part at a side opposite to the display. The electronic apparatus also includes a rotator which includes a first end part and a second end part that is located opposite to the first end part. The rotator is rotatable between a first position where the second end part is positioned between the support part and the opposed part and a second position which is different from the first position. The electronic apparatus also includes a control part which abuts against the rotator that is located in the first position and is capable of stopping rotation of the rotator.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: May 28, 2019
    Assignee: TOSHIBA VISUAL SOLUTIONS CORPORATION
    Inventor: Takafumi Tanaka
  • Publication number: 20180375579
    Abstract: A communication system includes three or more nodes and a multi-core fiber having a plurality of cores and being used in at least a partial segment of the connection between the nodes. One node of the nodes is connected to the multi-core fiber and includes a connector configured to add and drop a signal to and from an allocated core exclusively allocated for communication between the one node and another node of the nodes and/or configured to relay a signal transmitted through another core allocated to communication between the other nodes in multi-core fibers connected to the one node.
    Type: Application
    Filed: November 22, 2016
    Publication date: December 27, 2018
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takuya ODA, Tetsuro INUI, Akira HIRANO, Wataru IMAJUKU, Shoukei KOBAYASHI, Takafumi TANAKA, Yutaka MIYAMOTO, Hidehiko TAKARA
  • Publication number: 20180358773
    Abstract: An optical amplification system includes: three or more nodes; a multi-core fiber having a plurality of cores, the multi-core fiber being used in at least a partial segment of the connection between the nodes; an amplification light input unit configured to input amplification light to a core of the plurality of cores of the multi-core fiber; an amplification unit configured to amplify communication light transmitted through at least one core of the plurality of cores of the multi-core fiber using the amplification light, the amplification unit being provided in the nodes or between the nodes; and an amplification light coupling unit configured to couple the amplification light input by the amplification light input unit to the amplification unit.
    Type: Application
    Filed: November 22, 2016
    Publication date: December 13, 2018
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takuya ODA, Tetsuro INUI, Akira HIRANO, Wataru IMAJUKU, Shoukei KOBAYASHI, Takafumi TANAKA, Yutaka MIYAMOTO, Hidehiko TAKARA
  • Publication number: 20180359024
    Abstract: A communication system which includes: three or more nodes; a multi-core fiber having a plurality of cores, the multi-core fiber being used in at least a partial segment of a connection between the nodes; a detection signal output unit configured to output a fault detection signal transmitted by the core provided in the multi-core fiber configured to connect together the nodes; and a fault detection unit configured to determine whether a fault has occurred between the nodes on the basis of a detection result of the fault detection signal.
    Type: Application
    Filed: November 22, 2016
    Publication date: December 13, 2018
    Applicant: Nippon Telegraph and Telephone Corporation
    Inventors: Takuya ODA, Tetsuro INUI, Akira HIRANO, Wataru IMAJUKU, Shoukei KOBAYASHI, Takafumi TANAKA, Yutaka MIYAMOTO, Hidehiko TAKARA
  • Publication number: 20180351639
    Abstract: A communication system includes three or more nodes, and a multi-core fiber having a plurality of cores, the multi-core fiber being used in at least a partial segment of a connection between the nodes, wherein each of nodes includes: a fault information transmitting device configured to transmit fault information indicating that a fault has occurred in a communication path between one node and another node of the nodes when it is detected that it is not possible to perform communication between the one node and the another node; and a fault location specifying device configured to specify a section between nodes in which a fault has occurred on the basis of the fault information received from the fault information transmitting device provided in each of the nodes
    Type: Application
    Filed: November 22, 2016
    Publication date: December 6, 2018
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takuya ODA, Tetsuro INUI, Akira HIRANO, Wataru IMAJUKU, Shoukei KOBAYASHI, Takafumi TANAKA, Yutaka MIYAMOTO, Hidehiko TAKARA
  • Publication number: 20180343067
    Abstract: A node included in an optical power supply system which includes three or more nodes and a multi-core fiber having a plurality of cores, the plurality of cores being used in at least a partial segment of the connection between the nodes includes: a power supply light dropping unit configured to drop a portion or all of a power supply light from one core of the plurality of cores of the multi-core fiber; a photoelectric conversion unit configured to convert the portion or all of the power supply light dropped by the power supply light dropping unit to an electrical signal; and a power supply target facility configured to operate with the electrical signal converted by the photoelectric conversion unit.
    Type: Application
    Filed: November 22, 2016
    Publication date: November 29, 2018
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takuya ODA, Tetsuro INUI, Akira HIRANO, Wataru IMAJUKU, Shoukei KOBAYASHI, Takafumi TANAKA, Yutaka MIYAMOTO, Hidehiko TAKARA
  • Publication number: 20180341060
    Abstract: A communication system includes three or more nodes and a multi-core fiber having a plurality of cores, the multi-core fiber being used in at least a partial segment of the connection between the nodes is provided. One node of the nodes is connected to the multi-core fiber and includes a connector configured to add and drop a signal to and from an allocated core exclusively allocated from among the cores as a communication path between the one node and another node of the nodes and/or configured to relay a signal transmitted through another core of the cores allocated for communication between other nodes in the multi-core fiber connected to the one node, and a relative positional relationship between a connection position of the allocated core in which a signal is added or dropped in the connector and a connection position of another core in which a signal is relayed in the connector is the same for all of the nodes connected to the multi-core fiber.
    Type: Application
    Filed: November 22, 2016
    Publication date: November 29, 2018
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takuya ODA, Tetsuro INUI, Akira HIRANO, Wataru IMAJUKU, Shoukei KOBAYASHI, Takafumi TANAKA, Yutaka MIYAMOTO, Hidehiko TAKARA