Patents by Inventor Takafumi Matsumura

Takafumi Matsumura 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: 20240142319
    Abstract: A load sensor includes: an electrically-conductive elastic body; an electrically-conductive member having a linear shape and disposed so as to cross the electrically-conductive elastic body; and a dielectric body disposed between the electrically-conductive elastic body and the electrically-conductive member. A width of the electrically-conductive elastic body in a longitudinal direction of the electrically-conductive member is changed such that a relationship between a load and a contact area between the electrically-conductive elastic body and the electrically-conductive member via the dielectric body becomes close to a linear relationship.
    Type: Application
    Filed: January 5, 2024
    Publication date: May 2, 2024
    Inventors: Yodai MATSUMURA, Takashi MATSUMOTO, Susumu URAGAMI, Yuta MORIURA, Takafumi HAMANO, Hiroyuki FURUYA
  • Publication number: 20240092222
    Abstract: A method for distributing balancing power, the method comprising, preferentially assigning, when a demand response is performed using a plurality of electrified vehicle groups including one or more electrified vehicles each of which includes a communication unit and a balancing resource that is able to supply power to an outside, an integral multiple of control power of each of the electrified vehicle groups to required balancing power required for each of the electrified vehicle groups in target balancing power within a limit of balancing power that each of the electrified vehicle groups is able to supply, and assigning remaining balancing power of the target balancing power to required balancing power required for another resource other than the electrified vehicles, after assigning integral multiple of control power of each of the electrified vehicle groups to required balancing power required for each of the electrified vehicle groups in the target balancing power.
    Type: Application
    Filed: September 14, 2023
    Publication date: March 21, 2024
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takaaki SANO, Takafumi MATSUMURA
  • Publication number: 20240085256
    Abstract: A load sensor is configured to detect, as change in capacitance, change, in a contact area between an electrically-conductive elastic body and a dielectric body, that occurs due to a load applied to an upper face of the load sensor. In the load sensor, a plurality of sensor parts each configured to detect the load are disposed so as to be arranged in a plane direction, and a buffer part configured to suppress displacement of the upper face due to the load applied to a first sensor part from being propagated to a second sensor part adjacent to the first sensor part is disposed between the first sensor part and the second sensor part.
    Type: Application
    Filed: November 13, 2023
    Publication date: March 14, 2024
    Inventors: Yodai MATSUMURA, Takashi MATSUMOTO, Susumu URAGAMI, Yuta MORIURA, Takafumi HAMANO, Hiroyuki FURUYA
  • Patent number: 11502518
    Abstract: This energy management device is provided at a customer and is capable of controlling an electric appliance of the customer by communicating with a server. The server is configured to send a request for demand response. The energy management device includes: a receiver configured to receive the request for the demand response from the server; a transmitter configured to transmit a response indicating participation or nonparticipation with respect to the request; an electric appliance control unit configured to control the electric appliance; and an information acquisition unit configured to acquire information of the electric appliance. When determination that the request for the demand response is not achievable has been made after the response indicating participation has been transmitted, a response indicating nonparticipation is transmitted.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: November 15, 2022
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Takafumi Matsumura
  • Patent number: 11056882
    Abstract: A power management device has power consumption information in a building of a power customer, and stores history information in which the acquired power consumption information and time information indicating a time frame in which power has been consumed in the building are associated with each other. When having received a request based on power supply and demand, the power management device determines ease or difficulty in management of power consumption according to the request, on the basis of the stored history information, and power-management-required time frame information indicating a time frame for which power management according to the request is required, and notifies the power customer of a determination result. Then the power management device receives acceptance or rejection of the request, and transmits response information corresponding to a received content, to a request source.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: July 6, 2021
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Takafumi Matsumura
  • Publication number: 20210200175
    Abstract: This energy management device is provided at a customer and is capable of controlling an electric appliance of the customer by communicating with a server. The server is configured to send a request for demand response. The energy management device includes: a receiver configured to receive the request for the demand response from the server; a transmitter configured to transmit a response indicating participation or nonparticipation with respect to the request; an electric appliance control unit configured to control the electric appliance; and an information acquisition unit configured to acquire information of the electric appliance. When determination that the request for the demand response is not achievable has been made after the response indicating participation has been transmitted, a response indicating nonparticipation is transmitted.
    Type: Application
    Filed: May 11, 2018
    Publication date: July 1, 2021
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Takafumi MATSUMURA
  • Publication number: 20200371485
    Abstract: A power management device has power consumption information in a building of a power customer, and stores history information in which the acquired power consumption information and time information indicating a time frame in which power has been consumed in the building are associated with each other. When having received a request based on power supply and demand, the power management device determines ease or difficulty in management of power consumption according to the request, on the basis of the stored history information, and power-management-required time frame information indicating a time frame for which power management according to the request is required, and notifies the power customer of a determination result. Then the power management device receives acceptance or rejection of the request, and transmits response information corresponding to a received content, to a request source.
    Type: Application
    Filed: April 16, 2018
    Publication date: November 26, 2020
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Takafumi MATSUMURA
  • Patent number: 10756426
    Abstract: Proposed is a millimeter-wave band communication device which does not generate spatial resonance in a cover shielding unnecessary radio waves from the outside. Disclosed is a millimeter-wave band communication device including: a substrate; a radio frequency circuit element for a millimeter-wave band provided on the substrate; and a cover made of a bulk material that covers at least a part of the radio frequency circuit element and a surface of the substrate, the cover being formed by blending a dielectric loss material in a base.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: August 25, 2020
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Hideyuki Nagaishi, Akira Kuriyama, Takafumi Matsumura
  • Publication number: 20200003887
    Abstract: A speed measurement device and a speed measurement method are proposed which can calculate a speed even in a case where an intensity of a reflection wave is weakened with respect to an irradiation wave emitted from a radar module. A speed measurement device mounted in a vehicle generates an irradiation wave to emit the wave to a ground, receives a reflection wave from the ground of the irradiation wave, and generates a frequency difference signal between the emitted irradiation wave and the received reflection wave. Then, in a case where the intensity of the generated frequency difference signal is equal to or more than a predetermined value (amplitude threshold), a measurement speed is calculated on the basis of the frequency difference signal. Further, in the speed measurement device, the amplitude threshold used at the time of next measuring is changed based on a state of a system.
    Type: Application
    Filed: January 25, 2018
    Publication date: January 2, 2020
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Takafumi MATSUMURA, Masayuki SATOU
  • Publication number: 20190190142
    Abstract: Proposed is a millimeter-wave band communication device which does not generate spatial resonance in a cover shielding unnecessary radio waves from the outside. Disclosed is a millimeter-wave band communication device including: a substrate; a radio frequency circuit element for a millimeter-wave band provided on the substrate; and a cover made of a bulk material that covers at least a part of the radio frequency circuit element and a surface of the substrate, the cover being formed by blending a dielectric loss material in a base.
    Type: Application
    Filed: April 13, 2017
    Publication date: June 20, 2019
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Hideyuki NAGAISHI, Akira KURIYAMA, Takafumi MATSUMURA
  • Patent number: 9810779
    Abstract: To provide a radar module used for a speed measuring device or the like, in which dispersion of intensity distribution of electromagnetic waves emitted from the radar module via a lens is small, the radar module using a substrate with a plane antenna formed on a surface of the substrate includes: a lens having one end face that is plane and another end face that is spherical. In the radar module, a plane side of the lens is disposed to contact the plane antenna, and a spherical side of the lens is disposed in a remote field of the plane antenna.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: November 7, 2017
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Takafumi Matsumura, Hideyuki Nagaishi
  • Patent number: 9766330
    Abstract: A speed sensor which aligns a normal direction of one patch antenna which is disposed on a mounted board, and an optical axis of a dielectric lens uses a frame for inclining a sensor module, in order to obtain a component cos ? in a traveling direction when the speed sensor is installed on a horizontally vertical surface of an automobile or a railway car. When beams are condensed by using the one patch antenna and the cannonball-shaped dielectric lens, the dielectric lens is inclined and a bottom surface portion of the lens is cut with a plane parallel with a surface of the antenna-mounted board. The one patch antenna is configured by one patch and a GND electrode and the gain center of radiation characteristics is a normal direction of the antenna board. However, the radiation characteristics have a substantially hemisphere surface wave shape.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: September 19, 2017
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Hideyuki Nagaishi, Takafumi Matsumura
  • Publication number: 20150346334
    Abstract: A speed sensor which aligns a normal direction of one patch antenna which is disposed on a mounted board, and an optical axis of a dielectric lens uses a frame for inclining a sensor module, in order to obtain a component cos ? in a traveling direction when the speed sensor is installed on a horizontally vertical surface of an automobile or a railway car. When beams are condensed by using the one patch antenna and the cannonball-shaped dielectric lens, the dielectric lens is inclined and a bottom surface portion of the lens is cut with a plane parallel with a surface of the antenna-mounted board. The one patch antenna is configured by one patch and a GND electrode and the gain center of radiation characteristics is a normal direction of the antenna board. However, the radiation characteristics have a substantially hemisphere surface wave shape.
    Type: Application
    Filed: December 13, 2013
    Publication date: December 3, 2015
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Hideyuki NAGAISHI, Takafumi MATSUMURA
  • Publication number: 20150253421
    Abstract: To provide a radar module used for a speed measuring device or the like, in which dispersion of intensity distribution of electromagnetic waves emitted from the radar module via a lens is small, the radar module using a substrate with a plane antenna formed on a surface of the substrate includes: a lens having one end face that is plane and another end face that is spherical. In the radar module, a plane side of the lens is disposed to contact the plane antenna, and a spherical side of the lens is disposed in a remote field of the plane antenna.
    Type: Application
    Filed: October 4, 2013
    Publication date: September 10, 2015
    Inventors: Takafumi Matsumura, Hideyuki Nagaishi
  • Publication number: 20130264915
    Abstract: In a rotation angle measurement apparatus using a bridge configuration of a magneto-resistance element, a correct angle is not output when a fault occurs. For this reason, there is a problem in which an upper-layer system using the same is broken down. However, in order to solve this problem, there is provided a rotation angle measurement apparatus including a SIN bridge and a COS bridge each of which includes a magneto-resistance element and a detection unit, wherein the detection unit outputs an angle signal based on a signal output from a normal half bridge when a fault occurs in any one of respective half bridges of the COS bridge or the SIN bridge.
    Type: Application
    Filed: December 20, 2011
    Publication date: October 10, 2013
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Mutsumi Suzuki, Katsuaki Fukatsu, Takafumi Matsumura
  • Patent number: 8300897
    Abstract: There is provided a finger-vein authentication apparatus including a light source for illuminating one surface of both side-surfaces of a fingertip of a finger with light, and an image sensor for imaging the other surface of the fingertip, the light source and the image sensor being positioned at both sides of a nail of the fingertip with the nail sandwiched therebetween, wherein a fingertip guidance jig for supporting the fingertip and a finger-root guidance jig for supporting a finger-root of the finger are disposed between the light source and the image sensor, a light-shielding unit being disposed on the light-source side, the light-shielding unit being used for shielding the illumination light such that the illumination light will not travel to a ball side of the finger.
    Type: Grant
    Filed: October 7, 2008
    Date of Patent: October 30, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Akio Nagasaka, Takafumi Matsumura, Masahide Hayashi, Takafumi Miyatake, Naoto Miura, Harumi Kiyomizu
  • Patent number: 8186208
    Abstract: The present invention provides a small-sized pressure measuring module suitable for replacement of a tire, and a tire pressure monitoring system. The pressure measuring module detects pressure of air within a tire included in a wheel assembly attached to a vehicle body, and wirelessly transmits data on the detected pressure and a module ID of the pressure measuring module to a pressure monitoring device mounted on the vehicle body. The pressure measuring module has an antenna and an identification code. At least a portion of the antenna protrudes to the outside of the wheel assembly from the surface of a wheel included in the wheel assembly through a through-hole communicating with an inner space of the tire. The antenna wirelessly transmits the detected pressure value and the module ID to the pressure monitoring device. The identifier can be viewed from the outside of the wheel assembly and indicates the module ID.
    Type: Grant
    Filed: February 5, 2009
    Date of Patent: May 29, 2012
    Assignee: Hitachi, Ltd.
    Inventor: Takafumi Matsumura
  • Patent number: 8129802
    Abstract: In the manufacturing technology of an integrated MEMS in which a semiconductor integrated circuit (CMOS or the like) and a micro machine are monolithically integrated on a semiconductor substrate, a technology capable of manufacturing the integrated MEMS without using a special process different from the normal manufacturing technology of a semiconductor integrated circuit is provided. A MEMS structure is formed together with an integrated circuit by using the CMOS integrated circuit process. For example, when forming an acceleration sensor, a structure composed of a movable mass, an elastic beam and a fixed beam is formed by using the CMOS interconnect technology. Thereafter, an interlayer dielectric and the like are etched by using the CMOS process to form a cavity. Then, fine holes used in the etching are sealed with a dielectric.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: March 6, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Hiroshi Fukuda, Tsukasa Fujimori, Natsuki Yokoyama, Yuko Hanaoka, Takafumi Matsumura
  • Patent number: 7876929
    Abstract: A thin personal identification device that in which the infrared light source, transmission light quantity control element array, and light receiving element array are positioned on the same side of a living body. A microcomputer controls the array to combine a first image, which is obtained from the living body when one region of the living body is radiated with light transmitted from the infrared light source, with a second image, which is obtained when another region of the living body is radiated, and identifies a person in accordance with the combined image.
    Type: Grant
    Filed: October 4, 2004
    Date of Patent: January 25, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Takafumi Matsumura, Akio Nagasaka, Takafumi Miyatake
  • Patent number: 7825781
    Abstract: A tire pressure monitoring system is capable of ensuring accuracy of the rate of transmission of data via wireless communications without an increase in the number of oscillators and an increase in the cost. The tire pressure monitoring system includes a tire pressure measuring module. The tire pressure measuring module has a microcomputer, an activation control circuit, a pressure sensor, a temperature sensor, a frequency divider, a transmitting circuit, and a battery. The microcomputer has a clock pulse generator, analog-to-digital converter circuits and a controller. The transmitting circuit has an oscillator circuit. The frequency divider divides the frequency of a carrier wave CW output from the oscillator circuit to generate a clock signal, and outputs the clock signal to the controller included in the microcomputer. The clock signal is used for the timing for outputting data to a data signal line DL.
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: November 2, 2010
    Assignee: Hitachi, Ltd.
    Inventor: Takafumi Matsumura