Patents by Inventor Masayuki Imanishi

Masayuki Imanishi 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: 20210217618
    Abstract: The method of forming a nitride semiconductor film includes intermittently sputtering a target of gallium nitride inside a vacuum chamber containing nitrogen and argon, and depositing sputtered particles of the gallium nitride that are scattered from the target inside the vacuum chamber, on a substrate having a temperature of 560 degrees C. or higher and 650 degrees C. or lower. A ratio of a flow rate of the nitrogen to a sum of the flow rate of the nitrogen and a flow rate of the argon supplied to the vacuum chamber is 6% or higher and 18% or lower.
    Type: Application
    Filed: March 31, 2021
    Publication date: July 15, 2021
    Inventors: Nobuaki TAKAHASHI, Hitoshi MIURA, Koji NEISHI, Ryuji KATAYAMA, Yusuke MORI, Masayuki IMANISHI
  • Publication number: 20210087707
    Abstract: A group-III nitride substrate includes: a first region having a first impurity concentration in a polished surface; and a second region having a second impurity concentration lower than the first impurity concentration in the polished surface, wherein a first dislocation density of the first region is lower than a second dislocation density of the second region.
    Type: Application
    Filed: September 17, 2020
    Publication date: March 25, 2021
    Applicant: Panasonic Corporation
    Inventors: Yusuke MORI, Masashi YOSHIMURA, Masayuki IMANISHI, Akira KITAMOTO, Junichi TAKINO, Tomoaki SUMI, Yoshio OKAYAMA
  • Patent number: 10927476
    Abstract: A production method for a group III nitride crystal, the production method includes: preparing a plurality of group III nitride pieces as a plurality of seed crystals on a substrate, and growing a group III nitride crystal by bringing a surface of each of the seed crystals into contact with a melt that comprises at least one group III element selected from gallium, aluminum, and indium, and an alkali metal in an atmosphere comprising nitrogen, and thereby reacting the group III element and the nitrogen in the melt, wherein the step of growing a group III nitride crystal includes: growing a plurality of first group III nitride crystals whose cross-sections each have a triangular shape or a trapezoidal shape, from the plurality of seed crystals; and growing second group III nitride crystals each in a gap among the plurality of first group III nitride crystals.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: February 23, 2021
    Assignees: OSAKA UNIVERSITY, PANASONIC CORPORATION
    Inventors: Yusuke Mori, Masayuki Imanishi, Masashi Yoshimura, Kousuke Murakami, Yoshio Okayama
  • Patent number: 10910511
    Abstract: There is provided a manufacturing method of a III-V compound crystal including a seed-crystal-formed substrate provision step of providing a seed-crystal-formed substrate in which a III-V compound seed crystal has been formed on a substrate, a seed crystal partial separation step of separating part of a portion in contact with the substrate in the III-V compound seed crystal from the substrate, and a crystal growth step of generating and growing the III-V compound crystal by reacting a group III element and a group V element with use of the III-V compound seed crystal as a nucleus after the seed crystal partial separation step.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: February 2, 2021
    Assignees: OSAKA UNIVERSITY, DISCO CORPORATION
    Inventors: Yusuke Mori, Masashi Yoshimura, Mamoru Imade, Masayuki Imanishi, Hiroshi Morikazu, Shin Tabata, Takumi Shotokuji
  • Publication number: 20200311442
    Abstract: An orientation detection device obtains a detection information of a sensor that detects a displacement in the vertical direction occurring in the vehicle, computes a pitch angle of the vehicle on the basis of the detection information, obtains a gradient information indicating a gradient of a road on which the vehicle travels, and corrects a correlation between the detection information used in computation and the pitch angle on the basis of the gradient information.
    Type: Application
    Filed: May 6, 2020
    Publication date: October 1, 2020
    Inventors: Shunsuke SHIBATA, Masayuki IMANISHI, Takeshi HATO, Daisuke TAKEMORI, Hiroto BANNO
  • Publication number: 20200273435
    Abstract: A display control device controls display of a virtual image which is superimposed on foreground of a vehicle by projection of a display light image from an optical unit to a projection area. The display control device sets a projection position of the display light image which is projected in the projection area on the basis of a relative position of a superimposition object on which the virtual image is superimposed, obtains a measurement information from one vehicle height sensor measuring a displacement in a vertical direction occurring in the vehicle, obtains a gradient information indicating a gradient of a road on which the vehicle travels on the basis of three-dimensional map data, and corrects the projection position of the display light image on the basis of the measurement information and the gradient information.
    Type: Application
    Filed: May 6, 2020
    Publication date: August 27, 2020
    Inventors: Shunsuke SHIBATA, Masayuki IMANISHI, Norio SAMMA, Takeshi HATO, Takeshi KAWASHIMA, Sei IGUCHI, Hiroto BANNO, Daisuke TAKEMORI
  • Publication number: 20200263317
    Abstract: A method of manufacturing a group-III nitride crystal includes: a seed crystal preparation step of preparing a plurality of dot-shaped group-III nitrides on a substrate as a plurality of seed crystals for growth of a group-III nitride crystal; and a crystal growth step of bringing surfaces of the seed crystals into contact with a melt containing an alkali metal and at least one group-III element selected from gallium, aluminum, and indium in an atmosphere containing nitrogen and thereby reacting the group-III element with the nitrogen in the melt to grow the group-III nitride crystal.
    Type: Application
    Filed: February 6, 2020
    Publication date: August 20, 2020
    Applicants: OSAKA UNIVERSITY, Panasonic Corporation
    Inventors: Yusuke MORI, Masayuki IMANISHI, Masashi YOSHIMURA, Kousuke MURAKAMI, Shinsuke KOMATSU, Masahiro TADA, Yoshio OKAYAMA
  • Publication number: 20200263320
    Abstract: An object of the present invention is to provide a method for producing a group III nitride crystal in which generation of breaking or cracks is less likely to occur. To achieve the object, the method for producing a group III nitride crystal includes: seed crystal preparation including disposing a plurality of crystals of a group III nitride as a plurality of seed crystals on a substrate; and crystal growth including growing group III nitride crystals by contacting a surface of each of the seed crystals with a melt containing at least one group III element selected from gallium, aluminum, and indium and an alkali metal in an atmosphere containing nitrogen. In the seed crystal preparation, the plurality of seed crystals are disposed within a hexagonal region provided on the substrate.
    Type: Application
    Filed: February 17, 2020
    Publication date: August 20, 2020
    Inventors: Yoshio OKAYAMA, Shinsuke KOMATSU, Masahiro TADA, Yusuke MORI, Masayuki IMANISHI, Masashi YOSHIMURA
  • Publication number: 20200255975
    Abstract: A method of manufacturing a group-III nitride crystal includes: preparing a seed substrate; and supplying a group-III element oxide gas and a nitrogen element-containing gas at a supersaturation ratio (Po/Pe) greater than 1 and equal to or less than 5, then, growing a group-III nitride crystal on the seed substrate, wherein the Po is a supply partial pressure of the group-III element oxide gas, and the Pe is an equilibrium partial pressure of the group-III element oxide gas.
    Type: Application
    Filed: January 30, 2020
    Publication date: August 13, 2020
    Applicants: OSAKA UNIVERSITY, Panasonic Corporation
    Inventors: Yusuke MORI, Masashi YOSHIMURA, Masayuki IMANISHI, Akira KITAMOTO, Junichi TAKINO, Tomoaki SUMI
  • Publication number: 20200132462
    Abstract: A sensor calibration device acquires a measured value of an attitude of a vehicle based on an output of an attitude sensor, acquires vehicle speed information indicating a traveling speed of the vehicle, acquires map information on a road on which the vehicle travels, and sets a calibration value applied to the measured value to cause a calculated position of the vehicle calculated based on the vehicle speed information and the measured value to come close to a reference position indicated in the map information.
    Type: Application
    Filed: December 24, 2019
    Publication date: April 30, 2020
    Inventors: Shunsuke SHIBATA, Masayuki IMANISHI, Norio SAMMA, Takeshi HATO, Takeshi KAWASHIMA, Daisuke TAKEMORI, Hiroto BANNO, Sei IGUCHI
  • Publication number: 20200082184
    Abstract: An object detection device acquires a plurality of images captured by a camera mounted in a moving body and acquires movement information of the camera. The object detection device extracts an edge from a first image among the acquired images. The object detection device calculates a plurality of candidate points corresponding to the edge in a second image, based on the movement information and calculates candidate points corresponding to a plurality of heights as height candidates of the edge. The object detection device calculates a correlation index value between the edge and each of the plurality of candidate points and detects the candidate point with the largest correlation as a correspondence point of the edge. The object detection device detects an object at a position of the edge when the correlation index value of the detected correspondence point is equal to or smaller than a predetermined threshold.
    Type: Application
    Filed: November 13, 2019
    Publication date: March 12, 2020
    Inventors: Hideki SHIRAI, Masayuki IMANISHI, Hirohiko YANAGAWA
  • Publication number: 20200017993
    Abstract: A group-III nitride substrate includes: a base material part of a group-III nitride including a front surface, a back surface, and an inner layer between the front surface and the back surface, wherein the carbon concentration of the front surface of the base material part is higher than the carbon concentration of the inner layer.
    Type: Application
    Filed: July 10, 2019
    Publication date: January 16, 2020
    Inventors: Yusuke MORI, Masashi YOSHIMURA, Masayuki IMANISHI, Akira KITAMOTO, Junichi TAKINO, Tomoaki SUMI, Yoshio OKAYAMA
  • Publication number: 20190333481
    Abstract: A display control device for controlling a display position of a virtual image displayed and superimposed on a foreground in a vehicle (A), includes: an information acquisition unit for acquiring state information of the vehicle and extracting attitude change information and vibration information of the vehicle from the state information; a position correction unit for correcting a displacement of the display position of the virtual image with respect to the foreground caused by the attitude change of the vehicle, based on the attitude change information; a rough road determination unit for determining whether a road is a rough road, the road on which the vehicle is traveling or scheduled to travel, based on the vibration information; and a correction suppression unit for suppressing a correction control of the display position executed by the position correction unit and continuing to display the virtual image, based on a rough road determination.
    Type: Application
    Filed: July 11, 2019
    Publication date: October 31, 2019
    Inventors: Takeshi HATO, Takeshi KAWASHIMA, Daisuke TAKEMORI, Hiroto BANNO, Akira KAMIYA, Shingo YAMASHITA, Shunsuke SHIBATA, Masayuki IMANISHI, Norio SAMMA
  • Patent number: 10455273
    Abstract: Provided is a signal processing device including a control information acquiring unit configured to acquire image control information regarding control of an image, an image receiver configured to selectively receive one or more images transmitted using multicast based on the image control information, one or more image processing units configured to perform an image process on an image received by the image receiver based on the image control information, and an image sender configured to transmit an image subjected to the image process by the image processing unit based on the image control information, the image being transmitted using multicast.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: October 22, 2019
    Assignee: SONY CORPORATION
    Inventors: Koichi Ogasawara, Masayuki Imanishi, Atsushi Maruyama, Seishi Tomonaga
  • Publication number: 20190271096
    Abstract: A production method for a group III nitride crystal, the production method includes: preparing a plurality of group III nitride pieces as a plurality of seed crystals on a substrate, and growing a group III nitride crystal by bringing a surface of each of the seed crystals into contact with a melt that comprises at least one group III element selected from gallium, aluminum, and indium, and an alkali metal in an atmosphere comprising nitrogen, and thereby reacting the group III element and the nitrogen in the melt, wherein the step of growing a group III nitride crystal includes: growing a plurality of first group III nitride crystals whose cross-sections each have a triangular shape or a trapezoidal shape, from the plurality of seed crystals; and growing second group III nitride crystals each in a gap among the plurality of first group III nitride crystals.
    Type: Application
    Filed: January 9, 2019
    Publication date: September 5, 2019
    Applicants: OSAKA UNIVERSITY, Panasonic Corporation
    Inventors: Yusuke MORI, Masayuki IMANISHI, Masashi YOSHIMURA, Kousuke MURAKAMI, Yoshio OKAYAMA
  • Patent number: 10324677
    Abstract: Provided is an image transmission system including an image control device, and at least two signal processing devices. The signal processing devices each include an image receiver configured to selectively receive one or more images transmitted using multicast based on image control information transmitted from the image control device, one or more image processing units configured to perform an image process on an image received by the image receiver based on the image control information, and an image sender configured to transmit an image subjected to the image process by the image processing unit based on the image control information, the image being transmitted using multicast.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: June 18, 2019
    Assignee: SONY CORPORATION
    Inventors: Seishi Tomonaga, Koichi Ogasawara, Atsushi Maruyama, Masayuki Imanishi
  • Patent number: 10260165
    Abstract: There is provided a method for manufacturing a nitride crystal substrate, including: arranging a plurality of seed crystal substrates made of a nitride crystal in a planar appearance, so that their main surfaces are parallel to each other and their lateral surfaces are in contact with each other; growing a first crystal film using a vapor-phase growth method on a surface of the plurality of seed crystal substrates arranged in the planar appearance, and preparing a combined substrate formed by combining the adjacent seed crystal substrates each other by the first crystal film; growing a second crystal film using a liquid-phase growth method on a main surface of the combined substrate so as to be embedded in a groove that exists at a combined part of the seed crystal substrates, and preparing a substrate for crystal growth having a smoothened main surface; and growing a third crystal film using the vapor-phase growth method, on the smoothed main surface of the substrate for crystal growth.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: April 16, 2019
    Assignees: Osaka University, Sciocs Company Limited, Sumitomo Chemical Company, Limited
    Inventors: Yusuke Mori, Masashi Yoshimura, Mamoru Imade, Masayuki Imanishi, Masatomo Shibata, Takehiro Yoshida
  • Publication number: 20190088816
    Abstract: There is provided a manufacturing method of a III-V compound crystal including a seed-crystal-formed substrate provision step of providing a seed-crystal-formed substrate in which a III-V compound seed crystal has been formed on a substrate, a seed crystal partial separation step of separating part of a portion in contact with the substrate in the III-V compound seed crystal from the substrate, and a crystal growth step of generating and growing the III-V compound crystal by reacting a group III element and a group V element with use of the III-V compound seed crystal as a nucleus after the seed crystal partial separation step.
    Type: Application
    Filed: September 19, 2018
    Publication date: March 21, 2019
    Inventors: Yusuke Mori, Masashi Yoshimura, Mamoru Imade, Masayuki Imanishi, Hiroshi Morikazu, Shin Tabata, Takumi Shotokuji
  • Patent number: 10171802
    Abstract: A calibration method for calibrating an attitude of a camera mounted on a vehicle using markers each arranged vertically and each positioned at a pre-designated height from a road surface. The method includes: a first process including shooting an image of the markers with the camera, thereby generating a two-dimensional image; a second process including converting the two-dimensional image into a bird's eye view image on a specific plane so that the bird's eye view image reflects the height of each of the markers; and a third process including calculating a parameter of the camera based on a position difference between the markers in the specific plane obtained in the second process.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: January 1, 2019
    Assignee: DENSO CORPORATION
    Inventors: Hitoshi Tanaka, Masayuki Imanishi
  • Patent number: 10116975
    Abstract: [Object] To provides a controller capable of switching a video so that the video is not distorted on the receiving side when the video is transmitted using IP multicast [Solution] There is provided a controller including a bandwidth reservation unit configured to, when an instruction given to a receiving device that receives a first video stream transmitted via IP multicast to receive a second video stream after receiving the first video stream is acquired, acquire information on a status of a network topology and a transmitted video stream and to reserve a network bandwidth for transmitting the second video stream in addition to the first video stream, and a reception instruction unit configured to send out an instruction to receive the second video stream to the receiving device by using the network bandwidth reserved by the bandwidth reservation unit.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: October 30, 2018
    Assignee: SONY CORPORATION
    Inventors: Masayuki Imanishi, Masaaki Shino, Yoshiyuki Kunito, Yasuto Masuda