Patents by Inventor Yuta Ashida

Yuta Ashida 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: 11127289
    Abstract: A traffic congestion estimating device includes: a traffic congestion starting point and end point identifying unit that identifies a traffic congestion end point and a traffic congestion starting point for defining a traffic congestion area, based on position information detected for each vehicle; an inflow/outflow estimation unit that estimates an inflow to the traffic congestion end point at every time period, as well as, an outflow from the traffic congestion starting point at that time period, based on a traffic volume that was measured by a sensor on the upstream side of the traffic congestion end point, a traffic volume that was measured by a sensor on the downstream side of the traffic congestion starting point, and the position information; and a traffic congestion area updating unit that updates the traffic congestion end point, based on the inflow, and updates the traffic congestion starting point, based on the outflow.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: September 21, 2021
    Assignee: NEC CORPORATION
    Inventor: Yuta Ashida
  • Publication number: 20210242852
    Abstract: A balun includes first to fourth lines and a stack. A plurality of first conductor layers forming the first and third lines are located in a first region in the stack. A plurality of second conductor layers forming the second and fourth lines are located in a second region in the stack. A ground conductor layer is located closer to the second region than to the first region. The plurality of second conductor layers include a conductor layer pair where a distance between two conductor layers is smallest.
    Type: Application
    Filed: January 28, 2021
    Publication date: August 5, 2021
    Applicant: TDK CORPORATION
    Inventors: Yuta ASHIDA, Masahiro TATEMATSU, Shuhei SAWAGUCHI, Shigemitsu TOMAKI, Tetsuzo GOTO, Takeshi KIJIMA
  • Patent number: 11081767
    Abstract: A multilayered filter device includes a multilayer stack, a band pass filter, a first band elimination filter, and a second band elimination filter. The band pass filter and the first and second band elimination filters are each constructed using the multilayer stack. The band pass filter includes a plurality of first resonators with open ends. Each band elimination filter includes a connection path, and a second resonator coupled to the connection path. The connection path includes an impedance transformer. The second resonator includes a conductor line constituting a distributed constant line.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: August 3, 2021
    Assignee: TDK CORPORATION
    Inventors: Yuta Ashida, Noriyuki Hirabayashi, Shigemitsu Tomaki
  • Publication number: 20210234249
    Abstract: A directional coupler includes first to fourth terminals, a first line, a second line, a ground conductor portion, and a stack. The first line includes a first center portion, a first connecting portion, and a second connecting portion. The second line includes a second center portion, a third connecting portion, and a fourth connecting portion. A distance between the first and third connecting portions and a distance between the second and fourth connecting portions decrease toward the first and second center portions. The first to fourth terminals are located on a bottom surface of the stack.
    Type: Application
    Filed: January 22, 2021
    Publication date: July 29, 2021
    Applicant: TDK CORPORATION
    Inventors: Yuta ASHIDA, Masahiro TATEMATSU, Shuhei SAWAGUCHI, Shigemitsu TOMAKI
  • Patent number: 11056793
    Abstract: Disclosed herein is an antenna module that includes a circuit layer having a filter circuit, an antenna layer having a radiation conductor, a wiring layer having a connection wiring, a first ground pattern provided on a surface of the circuit layer, a second ground pattern provided between the circuit layer and the wiring layer, a third ground pattern provided between the wiring layer and the antenna layer, and a signal terminal provided on the surface of the circuit layer where the first ground pattern is cut away. The clearance region is located so as not to overlap the filter circuit as viewed in a lamination direction. The signal terminal is connected to the filter circuit through a pillar conductor penetrating the circuit layer and the connection wiring. The radiation conductor receives power through a feed pattern connected to the filter circuit.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: July 6, 2021
    Assignee: TDK CORPORATION
    Inventors: Yasuyuki Hara, Yuta Ashida
  • Publication number: 20210118296
    Abstract: Provided are a traffic status estimation device and the like with which it is possible to estimate the traffic status with high precision even in a situation in which there are few sections with sensors installed therein and the vehicle travel history is inadequate. This traffic status estimation device includes: a traffic status estimation unit that estimates the traffic status in sections in which sensors are not installed on the basis of the similarity of the traffic status among sets comprising a plurality of time bands and a plurality of sections that include sections in which sensors are installed and sections in which sensors are not installed, and on the basis of the traffic status in the sections in which sensors are installed; and an output unit that outputs the traffic status estimated by the traffic status estimation unit.
    Type: Application
    Filed: November 17, 2017
    Publication date: April 22, 2021
    Applicant: NEC Corporation
    Inventors: Yuta ASHIDA, Itaru NISHIOKA
  • Patent number: 10957959
    Abstract: A band-pass filter includes first to sixth stage resonators. Each resonator includes a resonator conductor portion formed of a conductor line. The resonator conductor portion has a first end and a second end which are opposite ends of the conductor line. The resonator conductor portion of each of the first and sixth stage resonators includes a narrow portion, a first wide portion located between the narrow portion and the first end, and a second wide portion located between the narrow portion and the second end. Each of the first and sixth stage resonators is lower in unloaded Q than the other resonators.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: March 23, 2021
    Assignee: TDK CORPORATION
    Inventors: Yuta Ashida, Noriyuki Hirabayashi, Shigemitsu Tomaki
  • Patent number: 10950123
    Abstract: Provided is a traffic control system being capable of maintaining service quality provided by a toll-way. A traffic control system 1 includes a prediction unit 210 and a control unit 230. The prediction unit 210 predicts a traffic state on one path among a plurality of paths from a first location to a second location. The control unit 230 controls, when the traffic state predicted on the one path does not satisfy a predetermined service level, distributed numbers of vehicles among the plurality of paths on the first location in such a way that the traffic state on the one path satisfies the predetermined service level.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: March 16, 2021
    Assignee: NEC CORPORATION
    Inventors: Itaru Nishioka, Yuta Ashida
  • Patent number: 10950917
    Abstract: A dielectric filter includes a plurality of dielectric resonators. The dielectric filter further includes a plurality of resonator bodies corresponding to the plurality of dielectric resonators, and a peripheral dielectric portion lying around the plurality of resonator bodies. Each of the plurality of resonator bodies is formed of a first dielectric having a first relative permittivity. The peripheral dielectric portion is formed of a second dielectric having a second relative permittivity lower than the first relative permittivity. Each of the plurality of resonator bodies includes a plurality of individual elements separated from each other.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: March 16, 2021
    Assignee: TDK CORPORATION
    Inventors: Yuta Ashida, Noriyuki Hirabayashi, Shigemitsu Tomaki
  • Patent number: 10854939
    Abstract: A dielectric filter has a first input/output port, a second input/output port, an even number of dielectric resonators, and a capacitor for capacitively coupling the first input/output port and the second input/output port. The even number of dielectric resonators are provided between the first input/output port and the second input/output port in circuit configuration, and are configured so that two dielectric resonators adjacent to each other in circuit configuration are magnetically coupled to each other.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: December 1, 2020
    Assignee: TDK CORPORATION
    Inventors: Yuta Ashida, Noriyuki Hirabayashi, Shigemitsu Tomaki
  • Publication number: 20200303798
    Abstract: A multilayered filter device includes a multilayer stack, a band pass filter, a first band elimination filter, and a second band elimination filter. The band pass filter and the first and second band elimination filters are each constructed using the multilayer stack. The band pass filter includes a plurality of first resonators with open ends. Each band elimination filter includes a connection path, and a second resonator coupled to the connection path. The connection path includes an impedance transformer. The second resonator includes a conductor line constituting a distributed constant line.
    Type: Application
    Filed: March 12, 2020
    Publication date: September 24, 2020
    Applicant: TDK CORPORATION
    Inventors: Yuta ASHIDA, Noriyuki HIRABAYASHI, Shigemitsu TOMAKI
  • Patent number: 10784551
    Abstract: A band-pass filter includes a main body, five resonators, a shield, and a partition. The main body is formed of a dielectric. The partition is formed of a conductor. The five resonators are configured so that capacitive coupling is established between every two of the resonators adjacent to each other in circuit configuration. Each of the five resonators includes a resonator conductor portion. A first stage resonator and a fifth stage resonator are magnetically coupled to each other although not adjacent to each other in circuit configuration. The partition extends to pass between the respective resonator conductor portions of the first stage resonator and the fifth stage resonator, and is electrically connected to the shield.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: September 22, 2020
    Assignee: TDK CORPORATION
    Inventors: Yuta Ashida, Noriyuki Hirabayashi, Shigemitsu Tomaki
  • Patent number: 10749234
    Abstract: A band-pass filter includes five resonators. The five resonators are configured so that capacitive coupling is established between every two of the resonators adjacent to each other in circuit configuration. The first stage resonator and the fifth stage resonator are magnetically coupled to each other. The second stage resonator and the fourth stage resonator are capacitively coupled to each other. Each of the five resonators includes a resonator conductor portion. The respective resonator conductor portions of the first and fifth stage resonators are physically adjacent to each other. The respective resonator conductor portions of the second and fourth stage resonators are physically adjacent to each other. The respective resonator conductor portions of the first and second stage resonators are physically adjacent to each other. The respective resonator conductor portions of the fourth and fifth stage resonators are physically adjacent to each other.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: August 18, 2020
    Assignee: TDK CORPORATION
    Inventors: Yuta Ashida, Noriyuki Hirabayashi, Shigemitsu Tomaki
  • Patent number: 10727557
    Abstract: A dielectric filter includes a plurality of dielectric resonators. The dielectric filter also includes: a plurality of resonator body portions each formed of a first dielectric and respectively corresponding to the plurality of dielectric resonators, the first dielectric having a first relative permittivity; a peripheral dielectric portion formed of a second dielectric and lying around the plurality of resonator body portions, the second dielectric having a second relative permittivity lower than the first relative permittivity; and a shield portion formed of a conductor. Either one of a temperature coefficient of resonant frequency of the first dielectric at 25° C. to 85° C. and a temperature coefficient of resonant frequency of the second dielectric at 25° C. to 85° C. has a positive value and the other has a negative value.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: July 28, 2020
    Assignee: TDK CORPORATION
    Inventors: Yuta Ashida, Shigemitsu Tomaki, Yousuke Futamata, Shin Takane, Yasuharu Miyauchi, Kazunari Kimura
  • Publication number: 20200219331
    Abstract: According to the present invention, there is provided an information processing apparatus (30) of a second administrator, the apparatus including: a first obtainment unit (31) that obtains first information collected by a first information collection apparatus installed over a first road managed by a first administrator; a second obtainment unit (32) that obtains second information collected by a second information collection apparatus installed over a second road managed by the second administrator; and a notification unit (33) that notifies the first administrator of at least one of the first information and information detected on the basis of the first information.
    Type: Application
    Filed: June 27, 2018
    Publication date: July 9, 2020
    Applicant: NEC CORPORATION
    Inventors: Itaru NISHIOKA, Yuta ASHIDA, Michihiko YUSA, Takeshi NAKAJIMA
  • Publication number: 20200161767
    Abstract: Disclosed herein is an antenna module that includes a circuit layer having a filter circuit, an antenna layer having a radiation conductor, a wiring layer having a connection wiring, a first ground pattern provided on a surface of the circuit layer, a second ground pattern provided between the circuit layer and the wiring layer, a third ground pattern provided between the wiring layer and the antenna layer, and a signal terminal provided on the surface of the circuit layer where the first ground pattern is cut away. The clearance region is located so as not to overlap the filter circuit as viewed in a lamination direction. The signal terminal is connected to the filter circuit through a pillar conductor penetrating the circuit layer and the connection wiring. The radiation conductor receives power through a feed pattern connected to the filter circuit.
    Type: Application
    Filed: November 19, 2019
    Publication date: May 21, 2020
    Inventors: Yasuyuki HARA, Yuta ASHIDA
  • Patent number: 10658737
    Abstract: A composite electronic component includes a multilayer stack, a filter, and an antenna. The filter is located within the multilayer stack and interposed between a first ground conductor layer and a second ground conductor layer. The antenna includes a radiation element. The radiation element is located on a side of the second ground conductor layer opposite from the first ground conductor layer. When viewed in a direction parallel to the stacking direction of the multilayer stack, the radiation element entirely lies inside the perimeter of the second ground conductor layer. The multilayer stack includes a plurality of connection conductor sections arranged around the filter and connecting the first ground conductor layer and the second ground conductor layer.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: May 19, 2020
    Assignee: TDK CORPORATION
    Inventors: Yuta Ashida, Yasuyuki Hara, Toshiki Tate
  • Patent number: 10658720
    Abstract: A multilayer electronic component includes a multilayer stack, and a band elimination filter formed using the multilayer stack. The band elimination filter includes a first input/output end, a second input/output end, a connection path connecting the first and second input/output ends, and a resonator coupled to the connection path. The connection path includes an impedance transformer. The resonator includes a first conductor line constituting a first distributed constant line. The impedance transformer includes a second conductor line constituting a second distributed constant line, and a through hole line section connected in series to the second conductor line.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: May 19, 2020
    Assignee: TDK CORPORATION
    Inventors: Yuta Ashida, Noriyuki Hirabayashi, Shigemitsu Tomaki
  • Publication number: 20200143672
    Abstract: The purpose of the present invention is to improve the precision with which a traffic congestion starting point and a traffic congestion ending point are specified in a section in which a sensor is not installed.
    Type: Application
    Filed: March 19, 2018
    Publication date: May 7, 2020
    Applicant: NEC Corporation
    Inventor: Yuta ASHIDA
  • Publication number: 20200106148
    Abstract: A band-pass filter includes first to sixth stage resonators. Each resonator includes a resonator conductor portion formed of a conductor line. The resonator conductor portion has a first end and a second end which are opposite ends of the conductor line. The resonator conductor portion of each of the first and sixth stage resonators includes a narrow portion, a first wide portion located between the narrow portion and the first end, and a second wide portion located between the narrow portion and the second end. Each of the first and sixth stage resonators is lower in unloaded Q than the other resonators.
    Type: Application
    Filed: August 27, 2019
    Publication date: April 2, 2020
    Applicant: TDK CORPORATION
    Inventors: Yuta ASHIDA, Noriyuki HIRABAYASHI, Shigemitsu TOMAKI