Patents by Inventor Hideaki Takada

Hideaki Takada 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: 11885984
    Abstract: A housing including a first viewing direction and a second viewing direction opposite to the first viewing direction, a first display unit disposed to be spaced from a top surface on a side of one end of the housing at a first interval with a display surface facing the housing, a second display unit disposed on a side of the other end of the housing, a first optical element configured to transmit a portion of light emitted from the first display unit and reflect a portion of the light, a second optical element configured to transmit a portion of light emitted from the second display unit and reflect a portion of the light, and a third optical element configured to transmit a portion of the light emitted from the first display unit and the second display unit and reflect a portion of the light.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: January 30, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Motohiro Makiguchi, Hideaki Takada
  • Patent number: 11843763
    Abstract: Provided is a display method that prevents degradation of image quality due to ghosting. The display method performed with a display apparatus includes a viewpoint position detection step (S1) for detecting a viewpoint position d that is an interval between a reflection screen and a viewer ?, a diffusion property control step (S2) for controlling a diffusion property of the reflection screen 40 in accordance with the viewpoint position d, and a projection step for projecting multiple viewpoint video images having disparity from multiple projectors to the reflection screen. The diffusion property control step (S2) includes controlling the diffusion property of the reflection screen 40 by varying a voltage or a duty cycle of an ac signal that is applied to a diffuser layer included in the reflection screen.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: December 12, 2023
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Motohiro Makiguchi, Hideaki Takada
  • Patent number: 11706402
    Abstract: Provided is an image generation technology capable of suppressing unpleasantness associated with fluctuation in image quality caused by the viewer's viewpoint movement.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: July 18, 2023
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Motohiro Makiguchi, Hideaki Takada
  • Publication number: 20230161174
    Abstract: A floating image display apparatus of the present embodiment includes: a first display unit (11) that is installed to have a display surface facing toward a ground; a first optical element (21) that is installed to be inclined with respect to the ground, and transmits a part of light emitted from the first display unit (11) and reflects a part of the light; a second display unit (12) that is installed to have a display surface perpendicular to the ground; and a second optical element (22) that is installed to be perpendicular to the ground, and transmits a part of light emitted from the second display unit (12) and reflects a part of the light.
    Type: Application
    Filed: April 21, 2020
    Publication date: May 25, 2023
    Inventors: Motohiro MAKIGUCHI, Hideaki TAKADA, Takashi SATO
  • Patent number: 11652979
    Abstract: A stereoscopic image display system includes: a plurality of projectors arranged side by side with predetermined spacing and project respectively viewpoint images for installation positions in the same direction, the viewpoint images being related to the same object; a screen displaying a superimposed image for the object, based on two adjacent images, among the projected images, that are the closest from a line-of-sight direction of an observer; and an image holding unit holding information about a first viewpoint image to which pattern information for shifting a phase corresponding to a predetermined period is added and information about a second viewpoint image from which the pattern information is subtracted, which are generated from each of a plurality of base images as the viewpoint images to be respectively projected by the plurality of projectors. Each projector projects the first and second viewpoint images related to preceding and succeeding stages onto the screen.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: May 16, 2023
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Motohiro Makiguchi, Hideaki Takada
  • Publication number: 20220353448
    Abstract: A plurality of comparison circuits each including a first terminal for inputting a first analog signal and a second analog signal and a second terminal connected to a wiring for transmission of a ramp signal A first operation changes an electric potential of the wiring from a predetermined electric potential to a first electric potential to cause at least one of the plurality of comparison circuits to retain a first offset. A second operation, after the first operation, converts the first analog signal into a digital signal. A third operation, after the second operation, changes the electric potential of the wiring to an electric potential included in a range of from the predetermined electric potential to the first electric potential. A fourth operation, after the third operation, converts the second analog signal into a digital signal.
    Type: Application
    Filed: April 25, 2022
    Publication date: November 3, 2022
    Inventors: Hideaki Takada, Hiroaki Kameyama, Masanori Ogura, Makiko Saito, Takuya Hara
  • Publication number: 20220256136
    Abstract: A stereoscopic image display system (1) includes: a plurality of projectors (20-0 to 20-16) that are arranged side by side with predetermined spacing and project respectively viewpoint images for installation positions in the same direction, the viewpoint images being related to the same object; a screen (10) that displays a superimposed image for the object to be stereoscopically viewed, based on the two adjacent images, among the images respectively projected by the plurality of projectors, that are the closest from a line-of-sight direction of an observer; and an image holding unit that holds information about a first viewpoint image to which pattern information for shifting a phase corresponding to a predetermined period is added and information about a second viewpoint image from which the pattern information is subtracted, which are generated from each of a plurality of base images as the viewpoint images to be respectively projected by the plurality of projectors.
    Type: Application
    Filed: May 23, 2019
    Publication date: August 11, 2022
    Inventors: Motohiro Makiguchi, Hideaki Takada
  • Publication number: 20220239894
    Abstract: Provided is an image generation technology capable of suppressing unpleasantness associated with fluctuation in image quality caused by the viewer's viewpoint movement.
    Type: Application
    Filed: May 31, 2019
    Publication date: July 28, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Motohiro MAKIGUCHI, Hideaki TAKADA
  • Publication number: 20220201233
    Abstract: A photoelectric conversion device includes a pixel that outputs a pixel signal in accordance with an incident light, a plurality of signal holding units each configured to hold the pixel signal, an AD conversion unit that converts the pixel signal from analog signal to digital signal, a first switch circuit provided between the pixel and the plurality of signal holding units, and a second switch circuit provided between the plurality of signal holding units and the AD conversion unit. The first switch circuit is configured to connect the pixels to the plurality of signal holding units individually to hold one pixel signal in the plurality of signal holding units, respectively, in different sampling periods, the second switch circuit is configured to switch connection between the plurality of signal holding units and the AD conversion unit, and pixel signals held in the plurality of signal holding units are averaged and output.
    Type: Application
    Filed: March 11, 2022
    Publication date: June 23, 2022
    Inventors: Hideaki Takada, Kazuo Yamazaki
  • Publication number: 20220191464
    Abstract: Provided is a display method that prevents degradation of image quality due to ghosting. The display method performed with a display apparatus includes a viewpoint position detection step (S1) for detecting a viewpoint position d that is an interval between a reflection screen and a viewer ?, a diffusion property control step (S2) for controlling a diffusion property of the reflection screen 40 in accordance with the viewpoint position d, and a projection step for projecting multiple viewpoint video images having disparity from multiple projectors to the reflection screen. The diffusion property control step (S2) includes controlling the diffusion property of the reflection screen 40 by varying a voltage or a duty cycle of an ac signal that is applied to a diffuser layer included in the reflection screen.
    Type: Application
    Filed: May 14, 2019
    Publication date: June 16, 2022
    Inventors: Motohiro Makiguchi, Hideaki TAKADA
  • Patent number: 11356790
    Abstract: Provided is a sound image reproduction device, sound image reproduction method, and sound image reproduction program that can support monaural sound sources and is capable of imparting directivity to virtual sound sources in a space.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: June 7, 2022
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Kimitaka Tsutsumi, Kenichi Noguchi, Hideaki Takada, Yoichi Haneda
  • Patent number: 11310453
    Abstract: A photoelectric conversion device includes a pixel that outputs a pixel signal in accordance with an incident light, a plurality of signal holding units each configured to hold the pixel signal, an AD conversion unit that converts the pixel signal from analog signal to digital signal, a first switch circuit provided between the pixel and the plurality of signal holding units, and a second switch circuit provided between the plurality of signal holding units and the AD conversion unit. The first switch circuit is configured to connect the pixels to the plurality of signal holding units individually to hold one pixel signal in the plurality of signal holding units, respectively, in different sampling periods, the second switch circuit is configured to switch connection between the plurality of signal holding units and the AD conversion unit, and pixel signals held in the plurality of signal holding units are averaged and output.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: April 19, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hideaki Takada, Kazuo Yamazaki
  • Patent number: 11265533
    Abstract: Provided is an image generation technology capable of suppressing unpleasant feelings caused by fluctuation in image quality caused by the viewer's viewpoint movement. The image generation technology includes an image generation unit configured to generate a pseudo viewpoint image I?k and a pseudo viewpoint image I??k, by using disparity inducing edge D?k having a phase difference ?k from a viewpoint image I, where ?k(1?k?K) is set as a real number satisfying 0<?1< . . . <?K??/2, an output image generation unit configured to generate an output image Outm(1?m?2K?1), from the pseudo viewpoint image I(m)(1?m?2K+1), the viewpoint image I is set as a pseudo viewpoint image I?0, where the pseudo viewpoint images I?k, I??k (0?k?K) are arranged in a sequence of I?k, I?(K?1), . . . , I?1, I?0(=I), I??1, . . . , and I??K is set as I(1), I(2), . . . , I(K), I(K+1), I(K+2), . . .
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: March 1, 2022
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Motohiro Makiguchi, Hideaki Takada, Taiki Fukiage, Shinya Nishida
  • Patent number: 11122363
    Abstract: An acoustic signal processing device 1 includes: a focal point position determination unit 12 that obtains a plurality of sets of initial focal point coordinates, coordinates of the virtual sound source, and a direction of directivity thereof, and for a pair of sets of initial focal point coordinates with different polarities among the plurality of sets of initial focal point coordinates, multiplies the sets of initial focal point coordinates by a rotation matrix based on the coordinates of the virtual sound source to thereby determine sets of focal point coordinates, the rotation matrix being specified from the direction of the directivity; a circular harmonic coefficient conversion unit 13 that calculates weights to be applied to multipoles including the sets of focal point coordinates from a circular harmonic coefficient; a filter coefficient computation unit 14 that, for each of the speakers in the speaker array, computes a weighted driving function to be applied to the speaker from the sets of focal poin
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: September 14, 2021
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Kimitaka Tsutsumi, Kenichi Noguchi, Hideaki Takada, Yoichi Haneda
  • Publication number: 20210262096
    Abstract: An electroless copper plating bath is an electroless copper plating bath with a pH of 5 to 10 containing a hydrazine compound as a reducing agent and not containing formaldehyde. The electroless copper plating bath comprises at least: an amine-based complexing agent or an amine compound; and an aminocarboxylic acid-based complexing agent.
    Type: Application
    Filed: February 13, 2020
    Publication date: August 26, 2021
    Inventors: Hideaki TAKADA, Tomoharu NAKAYAMA, Hisamitsu YAMAMOTO, Yukinori ODA
  • Patent number: 11101487
    Abstract: A fuel cell battery includes a plurality of stacks. Each of the stacks is a module containing a cell, and a base plate and a cover plate sandwiching the cell therebetween. In a state where the stacks are stacked together with a gasket being sandwiched between two adjacent stacks of the stacks, the two adjacent stacks are connected to each other by a connecting bolt. The gasket has, at a central part thereof, a contact plate that is elastic and electrically conductive. When the gasket is sandwiched between the two adjacent stacks, the contact plate is brought into abutment with the cover plate and the base plate.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: August 24, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Hideaki Takada
  • Patent number: 11094733
    Abstract: A semiconductor device has a first transistor of a first conductivity type and a second transistor of a second conductivity type, the first transistor is arranged in an active region of a semiconductor substrate, and a gate electrode and the active region overlap with each other in a plan view and also have a portion located between the source and the drain of the first transistor of the semiconductor substrate. In the channel width direction, an impurity concentration of the second conductivity type is higher at the end than on the center side of the portion.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: August 17, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Akira Oseto, Tatsunori Kato, Ryunosuke Ishii, Takanori Watanabe, Atsushi Suzuki, Koichiro Iwata, Kazuo Yamazaki, Hideaki Takada, Akira Ohtani
  • Patent number: 11073068
    Abstract: According to an aspect of the present invention, it is possible to easily support a spark arrester and prevent an occurrence of damage or sound in the spark arrester due to the effect of an exhaust pressure or external vibration. In a spark arrester, at least a flange part is formed of a spring member. The flange part includes a bent part that is telescopically bent by elastic deformation in a direction along a flow of exhaust gas. The bent part is supported between a tail pipe and a muffler in a state where the elastic deformation of the bent part is allowed.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: July 27, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Hideaki Takada, Sho Takada
  • Patent number: 10992886
    Abstract: Disclosed embodiments perform readout at a high rate without being affected by transition of pixel transistors. A solid state imaging device of an embodiment has a pixel having a photoelectric conversion unit that generates charges, an amplification transistor including an input node that receives a signal based on the charges generated in the photoelectric conversion unit, and a reset transistor that resets the potential of the input node of the amplification transistor; a signal processing circuit that reads out a signal from the pixel via a signal line; and a switch provided between the signal line and an input node of the signal processing circuit, and a signal value of a control signal applied to the gate of the reset transistor changes while the switch is in the off-state.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: April 27, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kazuo Yamazaki, Shinichiro Shimizu, Yasuhiro Oguro, Yu Arishima, Hideaki Takada
  • Publication number: 20210116718
    Abstract: A housing including a first viewing direction and a second viewing direction opposite to the first viewing direction, a first display unit disposed to be spaced from a top surface on a side of one end of the housing at a first interval with a display surface facing the housing, a second display unit disposed on a side of the other end of the housing, a first optical element configured to transmit a portion of light emitted from the first display unit and reflect a portion of the light, a second optical element configured to transmit a portion of light emitted from the second display unit and reflect a portion of the light, and a third optical element configured to transmit a portion of the light emitted from the first display unit and the second display unit and reflect a portion of the light.
    Type: Application
    Filed: April 11, 2019
    Publication date: April 22, 2021
    Inventors: Motohiro Makiguchi, Hideaki Takada