Patents by Inventor Tomotaka Takahashi

Tomotaka Takahashi 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: 11962048
    Abstract: A fuel cell system includes a fuel cell stack and a control device that controls operation of the fuel cell system based on a measured voltage value measured by a voltage sensor. When the fuel cell system is started and a value measured by a temperature sensor is equal to or less than a temperature determined in advance, the control device raises the voltage of the fuel cell stack until a voltage condition determined in advance is met, by supplying a cathode with an oxidant gas before current sweep is started. The control device sets a voltage command value and a current command value such that an operation point of the fuel cell stack is on an equal power line of the fuel cell stack when the operation point is caused to transition in at least a part of a transition period.
    Type: Grant
    Filed: April 6, 2021
    Date of Patent: April 16, 2024
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryouichi Namba, Masahiro Ito, Manabu Takahashi, Tomotaka Ishikawa
  • Patent number: 11879975
    Abstract: A measurement apparatus including: a laser that outputs a frequency-modulated laser beam; a branch that splits the frequency-modulated laser beam into a reference light and a measurement light; a beat signal generator that generates a beat signal by mixing the reference light and a reflected light that is reflected by radiating the measurement light onto an object to be measured; a frequency analyzer that frequency-analyzes the beat signal; a storage that stores a reference frequency signal which is a frequency signal obtained by converting a reference signal output by the beat signal generator in a state without the object to be measured; and calculation circuitry that calculates a difference between propagation distances of the reference light and the measurement light.
    Type: Grant
    Filed: August 9, 2021
    Date of Patent: January 23, 2024
    Assignee: Mitutoyo Corporation
    Inventors: Shinji Komatsuzaki, Yoshimasa Suzuki, Tomotaka Takahashi
  • Patent number: 11867809
    Abstract: A measurement apparatus includes a laser apparatus, a branching part that branches a frequency-modulated laser beam output by the laser apparatus into a reference light and a measurement light; a beat signal generation part that generates a beat signal by mixing a reflected light and the reference light, a conversion part that converts the beat signal into a digital signal at a first sampling rate and frequency-analyses it, an extraction part that extracts a signal component corresponding to a cavity frequency from the frequency-modulated laser beam, a digital filter that digitally filters the extracted signal component at a second sampling rate; and a calculation part that calculates a difference in a propagation distance between the reference light and the measurement light.
    Type: Grant
    Filed: July 6, 2020
    Date of Patent: January 9, 2024
    Assignee: Mitutoyo Corporation
    Inventors: Yoshimasa Suzuki, Shinichi Hara, Shinji Komatsuzaki, Ryusuke Kato, Hiroki Ujihara, Masayuki Nara, Tomotaka Takahashi
  • Publication number: 20230311332
    Abstract: A thin mobile communication terminal includes: a rectangular enclosure; two arms wherein one end of each arm is rotationally supported by a rotary shaft against corresponding one of both side surfaces of long sides of the enclosure; a hand at another end of each arm; a leg provided on one side surface of short sides of the enclosure in an independently movable manner; a rotary motor for rotating the rotary shaft that supports corresponding one of the two arms on one end of the corresponding one of the arms; an imaging unit provided on a main surface of the enclosure; and a controller that controls the rotary motor.
    Type: Application
    Filed: June 7, 2023
    Publication date: October 5, 2023
    Inventor: Tomotaka Takahashi
  • Patent number: 11415406
    Abstract: A laser apparatus, a measurement apparatus, and a measurement method are provided in which the laser apparatus outputs a frequency-modulated laser beam with a plurality of modes and includes: an optical cavity that has a gain medium for amplifying a light to be input, and an optical SSB modulator for shifting a frequency of the light amplified by the gain medium: and a control part that controls the optical SSB modulator to shift a frequency of a light to be input to the optical SSB modulator.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: August 16, 2022
    Assignees: Mitutoyo Corporation, 3D Innovation Co., Ltd
    Inventors: Shinji Komatsuzaki, Tomotaka Takahashi, Hiroki Ujihara
  • Publication number: 20220100230
    Abstract: A thin portable communication terminal that includes a casing having a rectangular parallelepiped shape; one pair of arm portions each having one end that is axially supported to be turnable with respect to corresponding one of both side faces on longer sides of the casing; hand portions each disposed at another end of corresponding one of the one pair of arm portions; and a leg portion disposed on one side face that is on a shorter side of the casing and is capable of independent movement.
    Type: Application
    Filed: December 14, 2021
    Publication date: March 31, 2022
    Inventor: Tomotaka Takahashi
  • Publication number: 20220057512
    Abstract: A measurement apparatus including: a laser that outputs a frequency-modulated laser beam; a branch that splits the frequency-modulated laser beam into a reference light and a measurement light; a beat signal generator that generates a beat signal by mixing the reference light and a reflected light that is reflected by radiating the measurement light onto an object to be measured; a frequency analyzer that frequency-analyzes the beat signal; a storage that stores a reference frequency signal which is a frequency signal obtained by converting a reference signal output by the beat signal generator in a state without the object to be measured; and calculation circuitry that calculates a difference between propagation distances of the reference light and the measurement light.
    Type: Application
    Filed: August 9, 2021
    Publication date: February 24, 2022
    Applicant: Mitutoyo Corporation
    Inventors: Shinji KOMATSUZAKI, Yoshimasa SUZUKI, Tomotaka TAKAHASHI
  • Publication number: 20210356591
    Abstract: A measurement apparatus includes a laser apparatus, a branching part that splits a laser beam into reference light and measurement light, a condensing part that condenses the measurement light onto an object to be measured, a control part that adjust a focal position where the condensing part condenses the measurement light, and a distance calculation part that calculates distance to the object to be measured on the basis of an optical path difference between the reference light and the measurement light, wherein the condensing part includes a first lens and a correspondence calculation part that calculates a correspondence between a focal position of the condensing part and a position of the first lens on the basis of a position of the first lens and a distance to the object to be measured.
    Type: Application
    Filed: May 17, 2021
    Publication date: November 18, 2021
    Applicant: Mitutoyo Corporation
    Inventors: Ryusuke KATO, Tomotaka TAKAHASHI
  • Publication number: 20210190474
    Abstract: A laser apparatus, a measurement apparatus, and a measurement method are provided in which the laser apparatus outputs a frequency-modulated laser beam with a plurality of modes and includes: an optical cavity that has a gain medium for amplifying a light to be input, and an optical SSB modulator for shifting a frequency of the light amplified by the gain medium: and a control part that controls the optical SSB modulator to shift a frequency of a light to be input to the optical SSB modulator.
    Type: Application
    Filed: December 17, 2020
    Publication date: June 24, 2021
    Applicants: Mitutoyo Corporation, 3D Innovation Co., Ltd.
    Inventors: Shinji KOMATSUZAKI, Tomotaka TAKAHASHI, Hiroki UJIHARA
  • Publication number: 20210011155
    Abstract: A measurement apparatus includes a laser apparatus, a branching part that branches a frequency-modulated laser beam output by the laser apparatus into a reference light and a measurement light; a beat signal generation part that generates a beat signal by mixing a reflected light and the reference light, a conversion part that converts the beat signal into a digital signal at a first sampling rate and frequency-analyses it, an extraction part that extracts a signal component corresponding to a cavity frequency from the frequency-modulated laser beam, a digital filter that digitally filters the extracted signal component at a second sampling rate; and a calculation part that calculates a difference in a propagation distance between the reference light and the measurement light.
    Type: Application
    Filed: July 6, 2020
    Publication date: January 14, 2021
    Applicant: Mitutoyo Corporation
    Inventors: Yoshimasa Suzuki, Shinichi Hara, Shinji Komatsuzaki, Ryusuke Kato, Hiroki Ujihara, Masayuki Nara, Tomotaka Takahashi
  • Publication number: 20180186002
    Abstract: Provision of a robot which has a simpler configuration and is capable of a stand-up operation. A posture controlling section (10) changes a posture of a robot 1 from a sitting posture to a bridge posture. In the bridge posture, a projected point (T), which represents a center of gravity of the robot (1) projected onto a plane parallel to a support polygon (R) of the robot (1), is at a position that is outside the support polygon (R) and near a right leg part 6 and a left leg part 7.
    Type: Application
    Filed: July 8, 2016
    Publication date: July 5, 2018
    Inventors: TAKAHIRO INOUE, AKIRA MOTOMURA, TOMOTAKA TAKAHASHI
  • Patent number: 8895911
    Abstract: An optical encoder includes a scale having diffraction gratings formed at predetermined pitches in a measurement axis direction, a detection head relatively movable with respect to the scale, the detection head including a light source portion configured to irradiate the scale with light, and a plurality of receiver portions configured to receive light reflected by or transmitted through the diffraction gratings of the scale, at different phases, and a signal processing device configured to perform signal processing to light reception signals output from the receiver portions of the detection head, to produce quadrature differential signals. The signal processing device is configured to calculate alignment adjustment monitor signals corresponding to a Lissajous radius of the quadrature differential signals in order to detect misalignment of the detection head with respect to the scale.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: November 25, 2014
    Assignee: Mitutoyo Corporation
    Inventor: Tomotaka Takahashi
  • Patent number: 8666261
    Abstract: A photoelectric encoder includes a scale; a detector; alight application section; a pair of origin signal reception sections; and a signal processing section adapted to provide the maximum value of the signal level output from the origin signal reception sections by side lobe light occurring as reflected on the origin mark as a stipulated value, provide an effective area of origin detection between the first position at which output of one of the origin signal reception sections for outputting a larger signal level than the stipulated value earlier than the relative displacement becomes a larger signal level than the stipulated value and the first position at which output of the other origin signal reception section exceeds the stipulated value and then becomes a smaller signal level than the stipulated value, and configured to generate the origin detection signal in the effective area.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: March 4, 2014
    Assignee: Mitutoyo Corporation
    Inventor: Tomotaka Takahashi
  • Patent number: D696324
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: December 24, 2013
    Assignee: K. K DeAgostini Japan
    Inventor: Tomotaka Takahashi
  • Patent number: D794692
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: August 15, 2017
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Akira Haranaka, Yasuyuki Sugino, Tomotaka Takahashi
  • Patent number: D806805
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: January 2, 2018
    Assignee: Vstone Co., Ltd.
    Inventor: Tomotaka Takahashi
  • Patent number: D810014
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: February 13, 2018
    Assignees: SHARP KABUSHIKI KAISHA, KABUSHIKI KAISHA ROBO GARAGE
    Inventors: Akira Haranaka, Tomotaka Takahashi
  • Patent number: D857809
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: August 27, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Fuminori Kataoka, Hiromi Tonegawa, Norihide Umeyama, Tomotaka Takahashi, Taichi Shimaya, Shigeki Tohyama
  • Patent number: D873353
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: January 21, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Fuminori Kataoka, Hiromi Tonegawa, Norihide Umeyama, Tomotaka Takahashi, Taichi Shimaya
  • Patent number: D973033
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: December 20, 2022
    Assignee: ROBO GARAGE CO., LTD.
    Inventor: Tomotaka Takahashi