Patents by Inventor Takashi Takeda

Takashi Takeda 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: 11941165
    Abstract: A temperature stimulus presentation device includes a presentation unit that generates heat at a predetermined temperature, and a control unit that changes an area of the presentation unit depending on whether or not a temperature stimulus is presented.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: March 26, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Arinobu Niijima, Toki Takeda, Takafumi Mukouchi, Takashi Sato
  • Patent number: 11940632
    Abstract: A virtual image display device is provided. Included in the virtual image display device are: an image light generating device; a projection optical system configured to project image light emitted from the image light generating device; a folding mirror configured to reflect, in an intersecting direction, the image light from the projection optical system; a semi-transmissive mirror configured to reflect a portion of the image light from the folding mirror; a concave surface mirror configured to reflect, toward the semi-transmissive mirror, the image light reflected at the semi-transmissive mirror to form an exit pupil, in which an entrance pupil is formed between the projection optical system and the semi-transmissive mirror.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: March 26, 2024
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Daiki Matsumoto, Masatoshi Yonekubo, Takashi Takeda
  • Publication number: 20240092361
    Abstract: An electronic device includes a storage that stores the gross weight of the vehicle V, an identification part that identifies a plurality of speed limits on a road on which the vehicle V is traveling, and an output part that outputs a first speed limit among the plurality of speed limits as an applied speed limit when the gross weight stored in the storage is equal to or greater than a threshold, and output a second speed limit which is higher than the first speed limit among the plurality of speed limits as the applied speed limit when the gross weight is not equal to or greater than the threshold.
    Type: Application
    Filed: September 12, 2023
    Publication date: March 21, 2024
    Inventors: Takashi KAWANO, Ai TAKEDA, Masahiro SEKI
  • Publication number: 20240092381
    Abstract: An electronic device includes: a recognition part that recognizes a plurality of signs indicating content of the regulations relating to traveling of a vehicle on the basis of a captured image obtained by capturing a region ahead of the vehicle; a first identification part that identifies, as a corresponding sign, a sign corresponding to a lane in which the vehicle travels among the plurality of signs recognized by the recognition part; and an output part that outputs information corresponding to content of the regulations indicated by the corresponding sign.
    Type: Application
    Filed: September 12, 2023
    Publication date: March 21, 2024
    Inventors: Takashi KAWANO, Ai TAKEDA, Masahiro SEKI
  • Patent number: 11927754
    Abstract: A virtual image display device includes: an image light generating device; a projection optical system configured to project image light emitted from the image light generating device; a folding mirror configured to reflect, in an intersecting direction, the image light from the projection optical system; a semi-transmissive mirror configured to reflect a portion of the image light from the folding mirror; and a concave surface mirror configured to reflect, toward the semi-transmissive mirror, the image light reflected at the semi-transmissive mirror to form an exit pupil, in which an optical axis of the image light extending from the image light generating device to the folding mirror is disposed between a first virtual extension plane obtained by imaginarily extending the semi-transmissive mirror and a second virtual extension plane obtained by imaginarily extending the concave surface mirror.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: March 12, 2024
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Daiki Matsumoto, Masatoshi Yonekubo, Takashi Takeda
  • Publication number: 20240075928
    Abstract: An unmanned vehicle management system includes: an inter-vehicle distance determination unit that determines an inter-vehicle distance between a sprinkling vehicle and an unmanned vehicle traveling behind the sprinkling vehicle in a same direction as that of the sprinkling vehicle based on a sprinkling state from a sprinkling spray provided in the sprinkling vehicle traveling in a work site; and an output unit that outputs, to the unmanned vehicle, inter-vehicle distance data indicating the inter-vehicle distance determined by the inter-vehicle distance determination unit.
    Type: Application
    Filed: January 5, 2022
    Publication date: March 7, 2024
    Applicant: Komatsu Ltd.
    Inventors: Kazuma Takeda, Takashi Hiranaka, Kenta Osagawa
  • Publication number: 20240036659
    Abstract: An electronic pen is provided with a light source that emits irradiation light, a rotatable rotating body, a deflecting member that deflects, toward the rotating body, the irradiation light emitted by the light source and transmits the irradiation light reflected by the rotating body, and a detecting member that receives the irradiation light transmitted through the deflecting member.
    Type: Application
    Filed: July 27, 2023
    Publication date: February 1, 2024
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Takashi TAKEDA
  • Patent number: 11796816
    Abstract: A virtual image display apparatus includes a first display device for a right eye, a second display device for a left eye, and an adjustment device configured to adjust display positions, and the first display device and the second display device are configured to guide imaging light in a second direction intersecting a first direction in which the first display device and the second display device are aligned, and display the first image and the second image and the adjustment device makes an adjustment to provide an overlapping area in which the first image and the second image are visually recognized in the overlapping area and an independent area in which the first image and the second image are visually recognized independently.
    Type: Grant
    Filed: November 29, 2021
    Date of Patent: October 24, 2023
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Takashi Takeda
  • Publication number: 20230296912
    Abstract: A projector includes a self-luminous display element configured to emit image light that is multicolored and has a predetermined wavelength band for each color of light, a first diffraction element configured to diffract the image light from the display element, and a second diffraction element configured to emit the image light while making angular compensation, by diffracting the image light, for angular separation of the image light occurring depending on the wavelength band of each color of light when diffracted by the first diffraction element.
    Type: Application
    Filed: March 15, 2023
    Publication date: September 21, 2023
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Takashi TAKEDA
  • Patent number: 11754839
    Abstract: A display module includes an image light generation device, a light-guiding member, a first reflection surface configured to reflect the imaging light incident via the light-guiding member, a first diffraction element configured to diffract the imaging light, and a second diffraction element configured to diffract the image light and form an exit pupil. The image light is sequentially incident on a first deflection surface, a second deflection surface, a second reflection surface, a third reflection surface, a fourth reflection surface, and a third deflection surface inside the light-guiding member, and a distance from a reference position where an optical axis of the exit pupil and an emission surface intersect to the second deflection surface is longer than a distance from the reference position to the first deflection surface and longer than a distance from the reference position to the second reflection surface.
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: September 12, 2023
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Masatoshi Yonekubo, Mitsutaka Ide, Takashi Takeda
  • Publication number: 20230282895
    Abstract: A secondary battery protection apparatus includes a temperature sensitive element having a characteristic value that varies in accordance with a change in temperature of a secondary battery. The secondary battery protection apparatus includes a switching circuit provided in a charge-and-discharge path between a secondary battery and an external device. The secondary battery protection apparatus includes a secondary battery protection circuit configured to control charge and discharge using the switching circuit to protect the secondary battery from temperature. The secondary battery protection circuit includes a comparison circuit configured to compare a voltage against a threshold voltage, the voltage corresponding to the change in the temperature of the secondary battery. The secondary battery protection circuit includes a conversion circuit that is controlled such that a first input of the comparison circuit is electrically coupled to a first terminal of the secondary battery protection circuit.
    Type: Application
    Filed: December 27, 2022
    Publication date: September 7, 2023
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Yohei WATANABE, Takashi TAKEDA, Junji TAKESHITA, Daisuke SUZUKI
  • Patent number: 11662587
    Abstract: A virtual image display device includes an image light generation device, a projection optical system configured to project image light emitted from the image light generation device, a folding mirror configured to reflect the image light from the projection optical system, a semi-transmissive mirror configured to reflect part of the image light from the folding mirror, and a concave surface mirror configured to reflect, the image light reflected by the semi-transmissive mirror to form an exit pupil, wherein an optical axis of the projection optical system is arranged in a direction intersecting a reference plane including an optical axis extending from the folding mirror to the semi-transmissive mirror and an optical axis extending from the concave surface mirror to the exit pupil, and a display region of the image light generation device is arranged inclined in accordance with inclinations of the folding mirror and the semi-transmissive mirror that are arranged.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: May 30, 2023
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Daiki Matsumoto, Masatoshi Yonekubo, Takashi Takeda
  • Patent number: 11656469
    Abstract: A light-guiding device includes a pair of light-guiding portions, a pair of light-incident portions that causes image light to be incident on the pair of light-guiding portions respectively, and a pair of light-emitting portions that emit image light, guided by the pair of light-guiding portions, to outside respectively, in which a pair of optical members including the pair of light-guiding portions are coupled by a central member having light transmissivity, and separate overcoat layers are provided at the optical member on one side and at the optical member on another side with respect to an approximate center of the central member.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: May 23, 2023
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Toshiaki Miyao, Masayuki Takagi, Takashi Takeda, Tokito Yamaguchi
  • Patent number: 11646569
    Abstract: A secondary battery protection circuit for protecting a secondary battery, including: a low-voltage detecting circuit configured to detect a voltage across the secondary battery that is lower than a second voltage for low voltage detection, the second voltage being set to be lower than a first voltage for overdischarge detection; and a switching circuit configured to cause a gate of a charge control NMOS transistor to be fixed at a potential at a high side power supply terminal, upon detecting, by the low-voltage detecting circuit, that the voltage across the secondary battery is lower than the second voltage for low voltage detection.
    Type: Grant
    Filed: January 20, 2022
    Date of Patent: May 9, 2023
    Assignee: MITSUMI ELECTRIC CO., LTD.
    Inventor: Takashi Takeda
  • Publication number: 20230139134
    Abstract: Provided is a virtual image display apparatus including a display device configured to emit an imaging light; a first mirror configured to reflect the imaging light from the display device; a refractive reflective optical member including a mirror portion configured to reflect the imaging light reflected by the first mirror; and a second mirror configured to reflect the imaging light reflected by the mirror portion toward a position of an exit pupil, wherein a distance from the display device to the first mirror is shorter than a distance from the position of the exit pupil to the second mirror; and a first angle ? formed by the imaging light incident on the second mirror and the imaging light reflected by the second mirror is greater than 0° and 45° or less.
    Type: Application
    Filed: October 28, 2022
    Publication date: May 4, 2023
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Takashi TAKEDA
  • Patent number: 11640060
    Abstract: A head-mounted display includes an image display device including a panel unit serving as a display element configured to display an image, a colored optical member disposed on a light path of imaging light emitted from the panel unit and having a yellowness of a predetermined value or greater, and a coloring correction optical member configured to correct a degree of coloring of the imaging light of the entire light path in accordance with the yellowness of the colored optical member.
    Type: Grant
    Filed: October 27, 2020
    Date of Patent: May 2, 2023
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Tokito Yamaguchi, Masayuki Takagi, Toshiaki Miyao, Akira Komatsu, Takashi Takeda
  • Publication number: 20230102935
    Abstract: A projection device according to the present disclosure includes a light emission display panel in which a plurality of pixels including a light emission element are arranged in a matrix shape, a scanning mirror configured to reflect, toward a scanned surface, imaging light emitted from the light emission display panel and performs two-dimensional scanning of the reflected imaging light on the scanned surface, and a projection optical system configured to guide the imaging light from the light emission display panel to the scanning mirror.
    Type: Application
    Filed: September 29, 2022
    Publication date: March 30, 2023
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Takashi TAKEDA
  • Publication number: 20230080118
    Abstract: An information processing device functions as a slave device connected to a master device via a communication network including a daisy chain connection. The information processing device includes: a communication part which performs communication processing using the communication network; a storage control part which performs control to store in a storage part communication state information indicating a communication state in the communication network detected in the communication part; a determination part which, with reference to the communication state information stored in the storage part, determines whether a communication load of a predetermined value or more is present in the communication network; and an output control part which, if the determination part determines that the communication load is present, performs control to output a result of the determination.
    Type: Application
    Filed: January 18, 2021
    Publication date: March 16, 2023
    Applicant: OMRON Corporation
    Inventors: Takashi TAKEDA, Hirohito MIZUMOTO
  • Patent number: 11598968
    Abstract: The image display device includes an image generating unit that emits first image light, a pupil expanding element that expands a diameter of a light flux included in the first image light from the image generating unit to obtain second image light, a first light condensing optical system that condenses the second image light and forms an intermediate image, and a second light condensing optical system that condenses light from the intermediate image and generates a virtual image on eye of a viewer, in a plane including at least the image generating unit, the pupil expanding element, and the eye of the viewer, a maximum emission angle of the first image light is smaller than a maximum viewing angle of the virtual image, and the diameter of the light flux included in the second image light is greater than that of a light flux included in the virtual image.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: March 7, 2023
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Masatoshi Yonekubo, Osamu Yokoyama, Takashi Takeda, Mitsutaka Ide, Daisuke Ishida
  • Publication number: 20230064446
    Abstract: The invention provides a cable abnormality assessment system, a slave device, and a cable abnormality assessment method. A cable abnormality assessment system is provided with a diagnosis control unit for assessing a cable abnormality on the basis of link-up information between a communication unit and another machine connected to the other end of a cable, and first and second information that are the respective results of abnormality diagnosis by a signal line diagnosis unit with regard to one and the other of two pair signal lines of the cable.
    Type: Application
    Filed: February 9, 2021
    Publication date: March 2, 2023
    Applicant: OMRON Corporation
    Inventor: Takashi TAKEDA