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: 11885984Abstract: 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: GrantFiled: April 11, 2019Date of Patent: January 30, 2024Assignee: Nippon Telegraph and Telephone CorporationInventors: Motohiro Makiguchi, Hideaki Takada
-
Patent number: 11843763Abstract: 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: GrantFiled: May 14, 2019Date of Patent: December 12, 2023Assignee: Nippon Telegraph and Telephone CorporationInventors: Motohiro Makiguchi, Hideaki Takada
-
Patent number: 11706402Abstract: Provided is an image generation technology capable of suppressing unpleasantness associated with fluctuation in image quality caused by the viewer's viewpoint movement.Type: GrantFiled: May 31, 2019Date of Patent: July 18, 2023Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Motohiro Makiguchi, Hideaki Takada
-
Publication number: 20230161174Abstract: 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: ApplicationFiled: April 21, 2020Publication date: May 25, 2023Inventors: Motohiro MAKIGUCHI, Hideaki TAKADA, Takashi SATO
-
Patent number: 11652979Abstract: 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: GrantFiled: May 23, 2019Date of Patent: May 16, 2023Assignee: Nippon Telegraph and Telephone CorporationInventors: Motohiro Makiguchi, Hideaki Takada
-
Publication number: 20220353448Abstract: 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: ApplicationFiled: April 25, 2022Publication date: November 3, 2022Inventors: Hideaki Takada, Hiroaki Kameyama, Masanori Ogura, Makiko Saito, Takuya Hara
-
Publication number: 20220256136Abstract: 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: ApplicationFiled: May 23, 2019Publication date: August 11, 2022Inventors: Motohiro Makiguchi, Hideaki Takada
-
Publication number: 20220239894Abstract: Provided is an image generation technology capable of suppressing unpleasantness associated with fluctuation in image quality caused by the viewer's viewpoint movement.Type: ApplicationFiled: May 31, 2019Publication date: July 28, 2022Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Motohiro MAKIGUCHI, Hideaki TAKADA
-
Publication number: 20220201233Abstract: 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: ApplicationFiled: March 11, 2022Publication date: June 23, 2022Inventors: Hideaki Takada, Kazuo Yamazaki
-
Publication number: 20220191464Abstract: 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: ApplicationFiled: May 14, 2019Publication date: June 16, 2022Inventors: Motohiro Makiguchi, Hideaki TAKADA
-
Patent number: 11356790Abstract: 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: GrantFiled: April 15, 2019Date of Patent: June 7, 2022Assignee: Nippon Telegraph and Telephone CorporationInventors: Kimitaka Tsutsumi, Kenichi Noguchi, Hideaki Takada, Yoichi Haneda
-
Patent number: 11310453Abstract: 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: GrantFiled: December 2, 2019Date of Patent: April 19, 2022Assignee: CANON KABUSHIKI KAISHAInventors: Hideaki Takada, Kazuo Yamazaki
-
Patent number: 11265533Abstract: 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: GrantFiled: April 3, 2019Date of Patent: March 1, 2022Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Motohiro Makiguchi, Hideaki Takada, Taiki Fukiage, Shinya Nishida
-
Patent number: 11122363Abstract: 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 poinType: GrantFiled: February 28, 2019Date of Patent: September 14, 2021Assignee: Nippon Telegraph and Telephone CorporationInventors: Kimitaka Tsutsumi, Kenichi Noguchi, Hideaki Takada, Yoichi Haneda
-
Publication number: 20210262096Abstract: 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: ApplicationFiled: February 13, 2020Publication date: August 26, 2021Inventors: Hideaki TAKADA, Tomoharu NAKAYAMA, Hisamitsu YAMAMOTO, Yukinori ODA
-
Patent number: 11101487Abstract: 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: GrantFiled: March 27, 2019Date of Patent: August 24, 2021Assignee: HONDA MOTOR CO., LTD.Inventor: Hideaki Takada
-
Patent number: 11094733Abstract: 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: GrantFiled: October 14, 2019Date of Patent: August 17, 2021Assignee: CANON KABUSHIKI KAISHAInventors: Akira Oseto, Tatsunori Kato, Ryunosuke Ishii, Takanori Watanabe, Atsushi Suzuki, Koichiro Iwata, Kazuo Yamazaki, Hideaki Takada, Akira Ohtani
-
Patent number: 11073068Abstract: 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: GrantFiled: February 14, 2019Date of Patent: July 27, 2021Assignee: HONDA MOTOR CO., LTD.Inventors: Hideaki Takada, Sho Takada
-
Patent number: 10992886Abstract: 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: GrantFiled: September 3, 2019Date of Patent: April 27, 2021Assignee: CANON KABUSHIKI KAISHAInventors: Kazuo Yamazaki, Shinichiro Shimizu, Yasuhiro Oguro, Yu Arishima, Hideaki Takada
-
Publication number: 20210116718Abstract: 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: ApplicationFiled: April 11, 2019Publication date: April 22, 2021Inventors: Motohiro Makiguchi, Hideaki Takada