Patents by Inventor Atsushi Takizawa
Atsushi Takizawa 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).
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Publication number: 20240178886Abstract: A reception-side apparatus includes: M receive antennas; and a processor configured to execute a first process of acquiring a first signal received from a first transmission-side apparatus from among signals simultaneously received from the N transmission-side apparatuses by receive diversity processing, and acquiring first data by demodulating and decoding the first signal. In the case of N>M, the processor acquires, for each of all patterns of a combination of a first signal, second signals from M?1 transmission-side apparatuses which are to be cancelled by receive diversity processing and third signals from N?M transmission-side apparatuses which are not to be cancelled by the receive diversity processing, a power ratio of power of the first signal relative to total power of the second and third signals based on a predetermined weight and a channel estimate of each signal, and selects a combination with the largest power ratio from among all the patterns.Type: ApplicationFiled: February 7, 2024Publication date: May 30, 2024Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kenichi TAKIZAWA, Masafumi MORIYAMA, Fumihide KOJIMA, Atsushi KUROSAWA
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Publication number: 20240171205Abstract: A wireless communication control method suppresses interference using an MMSE weight in an environment of wireless communication where the number of transmission stations transmitting a signal to a receiving station is larger than the number of reception antennas of the receiving station. The receiving station calculates power of an interference signal included in a signal received by the receiving station from the transmission stations the number of which is larger than the number of reception antennas, the interference signal corresponding to a part by which the number of transmission stations exceeds the number of reception antennas. The receiving station calculates the MMSE weight depending on the power of the interference signal, recalculates the power of the interference signal using the MMSE weight, and recalculates the MMSE weight depending on the recalculated power of the interference signal.Type: ApplicationFiled: January 24, 2024Publication date: May 23, 2024Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kenichi TAKIZAWA, Masafumi MORIYAMA, Fumihide KOJIMA, Atsushi KUROSAWA
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Patent number: 11977219Abstract: An optical correction is predictively performed based on a result of AI learning previously performed by use of learning data including measurement data. The optical compensation system is provided with wavefront correction optics, a sensor and a controller. The wavefront correction optics corrects a wavefront of light that passes through a given optical path. The sensor obtains environmental information in the optical path. The controller calculates, based on the environmental information, a predicted wavefront disturbance of the light that has passed through the optical path and controls the wavefront correction optics so as to cancel the predicted wavefront disturbance.Type: GrantFiled: August 7, 2019Date of Patent: May 7, 2024Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., RIKEN, INSTITUTE FOR LASER TECHNOLOGYInventors: Masashi Iwashimizu, Hiroyuki Daigo, Shingo Nishikata, Kazunori Masukawa, Atsushi Ochiai, Toshikazu Ebisuzaki, Satoshi Wada, Yoshiyuki Takizawa, Masayuki Maruyama, Shinji Motokoshi
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Patent number: 11979988Abstract: Disclosed herein is an electric circuit module that includes a circuit board, an electronic component mounted on an upper surface of the circuit board, and a mold member that covers the upper and side surfaces of the circuit board. The lower area of the side surface of the circuit board is exposed so as not to be covered with the mold member.Type: GrantFiled: February 14, 2022Date of Patent: May 7, 2024Assignee: TDK CORPORATIONInventors: Shuichi Takizawa, Atsushi Yoshino, Yuki Okino, Hiromu Harada
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Publication number: 20240111009Abstract: Preventing blood flow artifacts from being increased in an imaging plane allows reduction of the blood flow artifacts in the cross section subsequently excited. In the imaging using a spin-echo (SE) pulse sequence, an excitation width of a 90° pulse is extended from an imaging plane to one side. This one side indicates a downstream side of the blood flow with respect to a vessel of interest. In imaging multiple slices, the order of measuring the multiple imaging slices is set along the direction in which the width is extended.Type: ApplicationFiled: September 15, 2023Publication date: April 4, 2024Inventors: Kazuho Kamba, Masahiro Takizawa, Taisei Ueda, Nobuyuki Yoshizawa, Atsushi Kuratani, Kosuke Ito
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Patent number: 11929795Abstract: A reception-side apparatus includes: M receive antennas; and a processor configured to execute a first process of acquiring a first signal received from a first transmission-side apparatus from among signals simultaneously received from the N transmission-side apparatuses by receive diversity processing, and acquiring first data by demodulating and decoding the first signal. In the case of N>M, the processor acquires, for each of all patterns of a combination of a first signal, second signals from M?1 transmission-side apparatuses which are to be cancelled by receive diversity processing and third signals from N?M transmission-side apparatuses which are not to be cancelled by the receive diversity processing, a power ratio of power of the first signal relative to total power of the second and third signals based on a predetermined weight and a channel estimate of each signal, and selects a combination with the largest power ratio from among all the patterns.Type: GrantFiled: December 22, 2022Date of Patent: March 12, 2024Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kenichi Takizawa, Masafumi Moriyama, Fumihide Kojima, Atsushi Kurosawa
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Patent number: 11916581Abstract: A wireless communication control method suppresses interference using an MMSE weight in an environment of wireless communication where the number of transmission stations transmitting a signal to a receiving station is larger than the number of reception antennas of the receiving station. The receiving station calculates power of an interference signal included in a signal received by the receiving station from the transmission stations the number of which is larger than the number of reception antennas, the interference signal corresponding to a part by which the number of transmission stations exceeds the number of reception antennas. The receiving station calculates the MMSE weight depending on the power of the interference signal, recalculates the power of the interference signal using the MMSE weight, and recalculates the MMSE weight depending on the recalculated power of the interference signal.Type: GrantFiled: December 12, 2022Date of Patent: February 27, 2024Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kenichi Takizawa, Masafumi Moriyama, Fumihide Kojima, Atsushi Kurosawa
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Patent number: 10930185Abstract: An information processing apparatus provided with a display portion including a plurality of sub-pixels every pixel, connected to an output apparatus for presenting an image displayed on the display portion to a user through a lens, and producing the image to be displayed on the display portion receives source image data becoming an object of display, obtains a corresponding pixel on the source image data by information on a position of the sub-pixel and a predetermined conversion expression every sub-pixel included in a pixel with respect to the respective pixels constituting corrected image data, and determines luminances of the respective sub-pixels based on a pixel value of the pixel on the source image obtained every sub-pixel, thereby producing the corrected image data.Type: GrantFiled: May 19, 2016Date of Patent: February 23, 2021Assignee: Sony Interactive Entertainment Inc.Inventors: Atsushi Takizawa, Takamasa Araki, Rei Miyazaki, Shotaro Tada
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Patent number: 10672110Abstract: To solve a problem that when there is an error in a mounting position in mounting a lens and thus an optical axis of the lens and a center of a display is shifted, centers of images seen by the left and right eyes of a user individually, are shifted and thus an intended sense of distance cannot be presented to the user. An output apparatus includes a display portion including a plurality of sub-pixels every pixel, and a lens arranged on a display surface side of the display portion, and outputs information on an assembly error representing position shift between an optical axis of the lens and a center of the display portion. An information processing apparatus produces corrected image data obtained by correcting image data becoming an object of display based on the information on the assembly error output from the output apparatus.Type: GrantFiled: May 19, 2016Date of Patent: June 2, 2020Assignee: Sony Interactive Entertainment Inc.Inventors: Atsushi Takizawa, Takamasa Araki, Rei Miyazaki, Shotaro Tada
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Patent number: 10629107Abstract: An information processing apparatus generates a reference image including information to be presented to a user in accordance with a first attitude of an HMD identified at a first point in time. Based on the difference between the first attitude and a second attitude of the HMD identified at a second point in time after the first point in time, the information processing apparatus generates from the reference image a display image to be displayed on the HMD. Upon generation of the display image, the later the timing for displaying a specific image in the display image displayed on the HMD, the larger the amount of displacement is made by the information processing apparatus between the position of the specific pixel in the display image and the position of a corresponding image in the reference image serving as the source from which to set the pixel value of the specific pixel.Type: GrantFiled: November 14, 2016Date of Patent: April 21, 2020Assignee: Sony Interactive Entertainment Inc.Inventors: Takashi Yamamoto, Takakazu Ikeda, Atsushi Takizawa, Kenichiro Yokota
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Patent number: 10614558Abstract: To solve a problem that when there is an error in a mounting position in mounting a lens and thus an optical axis of the lens and a center of a display is shifted, centers of images seen by the left and right eyes of a user individually, are shifted and thus an intended sense of distance cannot be presented to the user. An output apparatus includes a display portion including a plurality of sub-pixels every pixel, and a lens arranged on a display surface side of the display portion, and outputs information on an assembly error representing position shift between an optical axis of the lens and a center of the display portion. An information processing apparatus produces corrected image data obtained by correcting image data becoming an object of display based on the information on the assembly error output from the output apparatus.Type: GrantFiled: May 19, 2016Date of Patent: April 7, 2020Assignee: Sony Interactive Entertainment Inc.Inventors: Atsushi Takizawa, Takamasa Araki, Rei Miyazaki, Shotaro Tada
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Patent number: 10607417Abstract: A position/posture acquiring unit of image generating apparatus acquires information on the position and posture of the head of a user. A view screen control unit sets a view screen according to the point of view of a user. An original image operating unit disposes an original image in a virtual space and moves the position thereof in response to movement of the point of view of the user. In addition, the original image operating unit calculates the amount of displacement of pixels in such a manner that an object looks fixed. Thereby, the original image operating unit sets a reference vector for each pixel of the image plane. The original image operating unit decides the reference vector by interpolation regarding a pixel for which the reference vector is not set. A displayed image generating unit carries out mapping of the original image onto the view screen by using the obtained reference vectors to generate a displayed image. An output unit outputs the displayed image.Type: GrantFiled: January 26, 2017Date of Patent: March 31, 2020Assignee: Sony Interactive Entertainment inc.Inventors: Nobuo Sasaki, Atsushi Takizawa
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Patent number: 10362297Abstract: A marker detection block 20 scans a taken image of a plurality of markers of a fixture worn on the head of a user so as to detect a two-dimensional coordinate on the taken image of the plurality of markers. A viewpoint position correction block 30 corrects a viewpoint position of the user without use of a coordinate in a Z direction of the markers but by use of the detected two-dimensional coordinate of the plurality of markers. A stereoscopic image generation block 40 generates a parallax image obtained when a three-dimensional object is viewed from the corrected viewpoint position.Type: GrantFiled: August 26, 2015Date of Patent: July 23, 2019Assignee: SONY INTERACTIVE ENTERTAINMENT INC.Inventors: Atsushi Takizawa, Nobuo Sasaki
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Publication number: 20190164354Abstract: A position/posture acquiring unit of image generating apparatus acquires information on the position and posture of the head of a user. A view screen control unit sets a view screen according to the point of view of a user. An original image operating unit disposes an original image in a virtual space and moves the position thereof in response to movement of the point of view of the user. In addition, the original image operating unit calculates the amount of displacement of pixels in such a manner that an object looks fixed. Thereby, the original image operating unit sets a reference vector for each pixel of the image plane. The original image operating unit decides the reference vector by interpolation regarding a pixel for which the reference vector is not set. A displayed image generating unit carries out mapping of the original image onto the view screen by using the obtained reference vectors to generate a displayed image. An output unit outputs the displayed image.Type: ApplicationFiled: January 26, 2017Publication date: May 30, 2019Applicant: Sony Interactive Entertainment Inc.Inventors: Nobuo Sasaki, Atsushi Takizawa
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Publication number: 20180315364Abstract: An information processing apparatus 10 generates a reference image including information to be presented to a user in accordance with a first attitude of an HMD 100 identified at a first point in time. Based on the difference between the first attitude and a second attitude of the HMD 100 identified at a second point in time after the first point in time, the information processing apparatus 10 generates from the reference image a display image to be displayed on the HMD 100. Upon generation of the display image, the later the timing for displaying a specific image in the display image displayed on the HMD 100, the larger the amount of displacement is made by the information processing apparatus 10 between the position of the specific pixel in the display image and the position of a corresponding image in the reference image serving as the source from which to set the pixel value of the specific pixel.Type: ApplicationFiled: November 14, 2016Publication date: November 1, 2018Applicant: Sony Interactive Entertainment Inc.Inventors: Takashi Yamamoto, Takakazu Ikeda, Atsushi Takizawa, Kenichiro Yokota
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Publication number: 20180247579Abstract: An information processing apparatus provided with a display portion including a plurality of sub-pixels every pixel, connected to an output apparatus for presenting an image displayed on the display portion to a user through a lens, and producing the image to be displayed on the display portion receives source image data becoming an object of display, obtains a corresponding pixel on the source image data by information on a position of the sub-pixel and a predetermined conversion expression every sub-pixel included in a pixel with respect to the respective pixels constituting corrected image data, and determines luminances of the respective sub-pixels based on a pixel value of the pixel on the source image obtained every sub-pixel, thereby producing the corrected image data.Type: ApplicationFiled: May 19, 2016Publication date: August 30, 2018Applicant: Sony Interactive Entertainment Inc.Inventors: Atsushi Takizawa, Takamasa Araki, Rei Miyazaki, Shotaro Tada
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Publication number: 20180247392Abstract: To solve a problem that when there is an error in a mounting position in mounting a lens and thus an optical axis of the lens and a center of a display is shifted, centers of images seen by the left and right eyes of a user individually, are shifted and thus an intended sense of distance cannot be presented to the user. An output apparatus (12) includes a display portion including a plurality of sub-pixels every pixel, and a lens arranged on a display surface side of the display portion, and outputs information on an assembly error representing position shift between an optical axis of the lens and a center of the display portion. An information processing apparatus (11) produces corrected image data obtained by correcting image data becoming an object of display based on the information on the assembly error output from the output apparatus.Type: ApplicationFiled: May 19, 2016Publication date: August 30, 2018Applicant: Sony Interactive Entertainment Inc.Inventors: Atsushi Takizawa, Takamasa Araki, Rei Miyazaki, Shotaro Tada
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Patent number: 9766458Abstract: An image generating system includes a first attitude data obtaining unit obtaining first attitude data indicating an attitude of a head-mounted display in first timing; a reference image generating unit generating a reference image showing a state of looking at a virtual three-dimensional space from a viewpoint, a position and a sight line direction of the viewpoint being identified on a basis of the first attitude data; a second attitude data obtaining unit obtaining second attitude data indicating the attitude of the head-mounted display in second timing; a corresponding position identifying unit identifying a corresponding position for each pixel within a display image to be displayed on the head-mounted display; a pixel value identifying unit identifying a pixel value of the pixel within the display image, the pixel being associated with the corresponding position; and a display image generating unit generating the display image.Type: GrantFiled: February 15, 2016Date of Patent: September 19, 2017Assignees: SONY CORPORATION, SONY INTERACTIVE ENTERTAINMENT INC.Inventors: Takakazu Ikeda, Takashi Yamamoto, Atsushi Takizawa, Kenichiro Yokota
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Publication number: 20170230644Abstract: A marker detection block 20 scans a taken image of a plurality of markers of a fixture worn on the head of a user so as to detect a two-dimensional coordinate on the taken image of the plurality of markers. A viewpoint position correction block 30 corrects a viewpoint position of the user without use of a coordinate in a Z direction of the markers but by use of the detected two-dimensional coordinate of the plurality of markers. A stereoscopic image generation block 40 generates a parallax image obtained when a three-dimensional object is viewed from the corrected viewpoint position.Type: ApplicationFiled: August 26, 2015Publication date: August 10, 2017Inventors: Atsushi TAKIZAWA, Nobuo SASAKI
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Publication number: 20160252730Abstract: An image generating system includes a first attitude data obtaining unit obtaining first attitude data indicating an attitude of a head-mounted display in first timing; a reference image generating unit generating a reference image showing a state of looking at a virtual three-dimensional space from a viewpoint, a position and a sight line direction of the viewpoint being identified on a basis of the first attitude data; a second attitude data obtaining unit obtaining second, attitude data indicating the attitude of the head-mounted display in second timing; a corresponding position identifying unit identifying a corresponding position for each pixel within a display image to be displayed on the head-mounted display; a pixel value identifying unit identifying a pixel value of the pixel within the display image, the pixel being associated with the corresponding position; and a display image generating unit generating the display image.Type: ApplicationFiled: February 15, 2016Publication date: September 1, 2016Inventors: Takakazu IKEDA, Takashi YAMAMOTO, Atsushi TAKIZAWA, Kenichiro YOKOTA