Patents by Inventor Takaaki Tanaka

Takaaki 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).

  • Publication number: 20190270452
    Abstract: A vehicle control device according to an example in the present disclosure detects a monitoring target vehicle that may potentially cut into an own-lane from an adjacent lane. Further, the vehicle control device first executes an evasive preparation when sensing a predetermined relative motion of the monitoring target vehicle relative to the flow of the adjacent lane. The vehicle control device executes an evasive action to avoid interference between the monitoring target vehicle and the own-vehicle.
    Type: Application
    Filed: February 25, 2019
    Publication date: September 5, 2019
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Yoichiro KATSURA, Yoshinori WATANABE, Takaaki TANAKA, Tadashi OMACHI
  • Publication number: 20190217835
    Abstract: An autonomous traveling vehicle, equipped with autonomous traveling function on a standard machine, has a high-pressure selector valve placed on a flow path in which pressure-oil is supplied from a standard brake valve (SBV) installed in the standard machine to a hydraulic brake. A flow path is installed to connect the high-pressure selector valve and an autonomous brake control valve (ABCV) that is supplied with pressure-oil delivered by a hydraulic pump. Further, an autonomous traveling controller is installed to perform control for autonomous travel, and an autonomous brake controller is installed to perform open or close control on the ABCV in response to a braking instruction from the autonomous traveling controller. When the brake pedal is stepped on, the pressure-oil flows from the SBV to the hydraulic brake, and when the autonomous traveling controller outputs a stop instruction, the pressure-oil flows from the ABCV to the hydraulic brake.
    Type: Application
    Filed: March 5, 2018
    Publication date: July 18, 2019
    Inventors: Takayuki SATO, Takaaki TANAKA, Hidefumi ISHIMOTO
  • Patent number: 10320159
    Abstract: By grounding a metal first housing, radiation noise generated from the coupling circuit is shielded. Further, by enclosing the first housing in a metal second housing in a manner such that the first housing and the second housing do not come into contact with each other, and grounding the second housing by connecting the second housing to an engine block, radiation noise generated by the capacitive component between the coupling circuit and the first housing is shielded by the second housing. As a result, the influence of this noise on peripheral devices of the high frequency discharge ignition device can be suppressed.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: June 11, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yasuyuki Shimizu, Takaaki Tanaka, Akira Nakagawa
  • Patent number: 10310364
    Abstract: The light source device and the projection display apparatus include a solid-state light source unit, a dichroic mirror, a fluorescent plate, a first wave plate, and a multi-reflection mirror. The solid-state light source unit emits first and second linearly polarized light rays at a predetermined ratio, the first and the second linearly polarized light rays being orthogonal to each other. The dichroic mirror separates the first and the second linearly polarized light rays, and combines blue light with yellow light. The fluorescent plate emits the yellow light to the dichroic mirror when the fluorescent plate is excited by the first linearly polarized light ray separated by the dichroic mirror. The first wave plate converts the second linearly polarized light ray separated by the dichroic mirror, into circularly polarized light. The multi-reflection mirror reflects the circularly polarized light to the dichroic mirror as the blue light.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: June 4, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Manabu Okuno, Takaaki Tanaka
  • Publication number: 20190155294
    Abstract: An autonomous driving system includes an electronic control unit configured to generate, based on a target route, a target path in a predetermined coordinate system and a speed plan specifying a passage time at a control point on the target path, and rebuild, based on an actual speed of a vehicle, the speed plan when an operation intervention is performed during autonomous driving performed by autonomous driving control for causing the vehicle to travel along the target path according to the speed plan, the operation intervention changing a braking force acting on the vehicle, and perform the autonomous driving control by using an actuator mounted on the vehicle.
    Type: Application
    Filed: October 1, 2018
    Publication date: May 23, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Go INOUE, Takahiro YOKOTA, Yoshinori WATANABE, Takaaki TANAKA
  • Patent number: 10265818
    Abstract: In a machine tool, when machining is in a steady zone, a rotation phase of a main spindle at the time of measurement in the N-th sampling is calculated, and the calculated rotation phase and the measurement value are recorded in a recording section so as to be associated with each other. The measurement and calculation of the rotation phase of the main spindle at the time of each measurement are continued for plural times of rotations of the main spindle, and thus the measurement values are obtained at various rotation phases, whereby change in drive force during one rotation of the main spindle is finally calculated.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: April 23, 2019
    Assignee: Okuma Corporation
    Inventor: Takaaki Tanaka
  • Patent number: 10261401
    Abstract: A light source device has a blue solid-state light source, a red solid-state light source, a first retardation plate, a dichroic mirror, a phosphor plate, a second retardation plate, and a reflector. The first retardation plate causes light from the blue solid-state light source to have a phase difference. The dichroic mirror provides the light from the blue solid-state light source with polarization separation, receiving the light from the blue solid-state light source and light from the red solid-state light source in an identical direction. The phosphor plate emits fluorescence light, excited by one light, separated by the dichroic mirror. The second retardation plate converts, into circular polarization, polarization of the light from the red solid-state light source and other light, separated by the dichroic mirror. The reflector reflects light converted into circular polarization by being passed through the second retardation plate.
    Type: Grant
    Filed: July 12, 2018
    Date of Patent: April 16, 2019
    Assignee: Panasonic Intellectual Property Management Co. Ltd.
    Inventor: Takaaki Tanaka
  • Patent number: 10263396
    Abstract: A problem exists in that, as a loop through which high frequency energy conducts is long, it is difficult to suppress noise generated from the loop and suppress an influence thereof on peripheral equipment. A high frequency discharge ignition device according to this invention is a structure integrally constituted by a second housing into which a high frequency energy supply circuit is built and a first housing into which an output circuit is built, wherein the high frequency energy supply circuit is connected to the output circuit by a connection terminal so as to be connected to a spark plug which is mounted on a grounded object. Further, the high frequency energy supply circuit is grounded via a conducting member disposed in a through hole provided in the first housing.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: April 16, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takaaki Tanaka, Yasuyuki Shimizu
  • Publication number: 20190072840
    Abstract: The light source device according to the present disclosure includes: a solid-state light source that emits red light having a luminous flux; a solid-state light source that emits green light having a luminous flux; a solid-state light source that emits blue light having a luminous flux; a dichroic mirror that combines, into combined light, the red light, the green light, and the blue light having exited from the respective solid-state light sources; a dynamic diffusion plate on which the combined light having exited from the dichroic mirror is incident; and a luminous-flux splitting element that splits the luminous flux that having exited from the solid-state light sources for emitting at least one of the red light, the green light, and the blue light.
    Type: Application
    Filed: August 8, 2018
    Publication date: March 7, 2019
    Inventor: TAKAAKI TANAKA
  • Publication number: 20190064400
    Abstract: The light source device of the projection display apparatus according to the present disclosure includes: solid-state light sources that individually emit blue light, green light, and red light; a plurality of dichroic mirrors that combine the blue light, the green light, and the red light having exited from the solid-state light sources; a first diffusion plate on which the combined light having been combined by the plurality of dichroic mirrors is incident; a dynamic diffusion plate that is disposed at a position at which the combined light having exited from the first diffusion plate converges and starts to diverge.
    Type: Application
    Filed: August 1, 2018
    Publication date: February 28, 2019
    Inventor: TAKAAKI TANAKA
  • Patent number: 10203593
    Abstract: A light source device according to the present disclosure includes: a plurality of solid-state light source units; a polarization combination mirror for combining polarized lights incident from the plurality of the solid-state light source units; a half-wavelength plate having a strip shape, for converting a polarization azimuth of one of polarized lights coming from the polarization combination mirror; another half-wavelength plate for controlling proportions of intensities of polarization components of the polarized lights incident from the former half-wavelength plate; a dichroic mirror for separating the polarized lights incident from the latter half-wavelength plate; a phosphor plate for emitting light, upon being excited by the polarized light having been separated by the dichroic mirror.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: February 12, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Takaaki Tanaka
  • Publication number: 20190041735
    Abstract: A light source device has a blue solid-state light source, a red solid-state light source, a first retardation plate, a dichroic mirror, a phosphor plate, a second retardation plate, and a reflector. The first retardation plate causes light from the blue solid-state light source to have a phase difference. The dichroic mirror provides the light from the blue solid-state light source with polarization separation, receiving the light from the blue solid-state light source and light from the red solid-state light source in an identical direction. The phosphor plate emits fluorescence light, excited by one light, separated by the dichroic mirror. The second retardation plate converts, into circular polarization, polarization of the light from the red solid-state light source and other light, separated by the dichroic mirror. The reflector reflects light converted into circular polarization by being passed through the second retardation plate.
    Type: Application
    Filed: July 12, 2018
    Publication date: February 7, 2019
    Inventor: TAKAAKI TANAKA
  • Patent number: 10193312
    Abstract: In order to transmit high frequency energy to a coupling circuit, if the high frequency energy is transmitted via a harness provided with a high-voltage cable, the loop in which the high frequency energy is conducted is long, and thus, noise occurring from the loop is increased. Thus, shielding is needed to be provided to the entire apparatus. The present invention has a structure in which: a high frequency energy supply circuit and a coupling circuit are connected by a connection member; and a housing having therein the high frequency energy supply circuit is integrated with a housing having therein the coupling circuit. Accordingly, the entire apparatus can be downsized and noise occurring from the loop can be reduced.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: January 29, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yasuyuki Shimizu, Takaaki Tanaka, Yusuke Naruse
  • Patent number: 10153708
    Abstract: A three-level power converter includes a first module housing a vertical arm forming a three-level power conversion circuit; a second module disposed adjacent to the first module and housing an intermediate arm forming the three-level power conversion circuit; high-potential and low-potential connecting terminal boards each extending vertically, and having a lower end connected to connecting terminals on an upper surface of the first module, and an upper end provided with an external connecting end; and a flat intermediate-potential connecting terminal board extending vertically, and having a lower end connected to connecting terminals on an upper surface of the second module, and an upper end provided with an external connecting end. The high-potential, low-potential, and intermediate-potential connecting terminal boards are stacked close to and parallel to one another. Each of the external connecting ends is connected to a corresponding terminal of a DC capacitor.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: December 11, 2018
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Koji Maruyama, Takaaki Tanaka
  • Publication number: 20180335685
    Abstract: The light source device and the projection display apparatus include a solid-state light source unit, a dichroic mirror, a fluorescent plate, a first wave plate, and a multi-reflection mirror. The solid-state light source unit emits first and second linearly polarized light rays at a predetermined ratio, the first and the second linearly polarized light rays being orthogonal to each other. The dichroic mirror separates the first and the second linearly polarized light rays, and combines blue light with yellow light. The fluorescent plate emits the yellow light to the dichroic mirror when the fluorescent plate is excited by the first linearly polarized light ray separated by the dichroic mirror. The first wave plate converts the second linearly polarized light ray separated by the dichroic mirror, into circularly polarized light. The multi-reflection mirror reflects the circularly polarized light to the dichroic mirror as the blue light.
    Type: Application
    Filed: April 3, 2018
    Publication date: November 22, 2018
    Inventors: MANABU OKUNO, TAKAAKI TANAKA
  • Patent number: 10107341
    Abstract: Provided is a clutch control device for a work machine capable of controlling a fan to an appropriate rotational speed. In the clutch control device for the work machine, a controller includes a target fan rotational speed calculation module that calculates a target fan rotational speed for the fan, a clutch characteristic curve storage module that stores a plurality of clutch characteristic curves, a clutch command calculation module that outputs with reference to a clutch characteristic curve a first clutch control signal corresponding to the target fan rotational speed, a feedback control module that output a second clutch control signal based on the difference between the target fan rotational speed and an actual fan rotational speed, and an adder that adds the first clutch control signal and the second clutch control signal to output a third clutch control signal.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: October 23, 2018
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Naoki Fukuda, Tadashi Osaka, Ryuji Kouno, Masatsugu Arai, Takanobu Ikari, Takaaki Tanaka
  • Patent number: 10100923
    Abstract: In a vehicle including an engine, drive wheels, a power transmission system, and an electronic control unit, during shifting of an automatic transmission, a hydraulic command value of a clutch is set to a higher value as an engine power command value is larger, so that a shift or change of the speed ratio proceeds in an electronic continuously variable transmission and the automatic transmission, in accordance with engine power as a product of the engine speed and engine torque, rather than torque of the engine, etc.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: October 16, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Nobufusa Kobayashi, Masato Yoshikawa, Takaaki Tanaka, Masato Shimoda
  • Publication number: 20180272871
    Abstract: In a regenerative braking device of a dump truck comprising an engine, a first generator and a second generator driven by the engine, at least one travel motor driven by generated electric power of the first generator and at least one fan motor to which generated electric power of the second generator is inputted via a first rectifier circuit, the regenerative braking device comprises: a resistive element to which regenerating electric power from the at least one travel motor in regenerative braking is supplied and which is cooled by at least one fan driven by the at least one fan motor and converts electric energy into heat energy and dissipates heat; and a DC/DC converter that inputs a part of the regenerating electric power which is supplied to the resistive element to an output line of the first rectifier circuit via a second rectifier circuit.
    Type: Application
    Filed: September 8, 2016
    Publication date: September 27, 2018
    Inventors: Tomonori TAKADA, Takanobu IKARI, Takashi IKIMI, Akihiro NAKAMURA, Masatsugu ARAI, Naoki FUKUDA, Takaaki TANAKA
  • Publication number: 20180278027
    Abstract: By grounding a metal first housing, radiation noise generated from the coupling circuit is shielded. Further, by enclosing the first housing in a metal second housing in a manner such that the first housing and the second housing do not come into contact with each other, and grounding the second housing by connecting the second housing to an engine block, radiation noise generated by the capacitive component between the coupling circuit and the first housing is shielded by the second housing. As a result, the influence of this noise on peripheral devices of the high frequency discharge ignition device can be suppressed.
    Type: Application
    Filed: September 21, 2017
    Publication date: September 27, 2018
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yasuyuki SHIMIZU, Takaaki TANAKA, Akira NAKAGAWA
  • Patent number: 10082656
    Abstract: A lamellar bone observation microscope includes: a light source; a condenser lens for focusing light emitted by the light source onto a sample; an objective lens on an opposite side of the sample from the condenser lens; a first polarizing plate between the light source and the condenser lens to pass only a polarization component of the light emitted by the light source; a second polarizing plate configured to pass only a polarization component of the light passed through the sample in accordance with a relative positional relationship with the first polarizing plate; a first wave plate between the first polarizing plate and the condenser lens to introduce a phase difference of ?/4 in a ? direction of the light passed through the first polarizing plate; and a second wave plate for introducing a phase difference of ?/4 in a ? direction of the light passed through the objective lens.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: September 25, 2018
    Assignee: OLYMPUS CORPORATION
    Inventor: Takaaki Tanaka