Patents by Inventor Yasutoshi AKIBA

Yasutoshi AKIBA 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: 12230175
    Abstract: A circuit device is used for a head-up display apparatus. The circuit device includes a distortion correction circuit and an error detection circuit. The distortion correction circuit performs a distortion correction on input image data as image data of an input image and outputs output image data as image data of an output image after the distortion correction. Respective first divisional areas of a first divisional area group formed by division of the input image correspond to respective second divisional areas of a second divisional area group in the output image in the distortion correction. Here, the error detection circuit detects an occlusion error in a display image of the head-up display apparatus based on the output image data of the respective second divisional areas.
    Type: Grant
    Filed: October 27, 2022
    Date of Patent: February 18, 2025
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Daisuke Kobayashi, Yasutoshi Akiba, Kumar Anandabairavasamy Anand, Wittmeir Manfred, Tyler Dahlman
  • Publication number: 20250053486
    Abstract: A control system includes: an image processing circuit; a first error detection circuit configured to perform first error detection on second image data; a first error code value generation circuit configured to generate a first error code value based on the second image data; a transmission interface circuit; a reception interface circuit; a second error code value generation circuit configured to generate a second error code value based on the second image data; a second error detection circuit configured to perform second error detection based on the first error code value and the second error code value; and a control circuit configured to output a control signal when an error is detected in at least one of the first error detection and the second error detection.
    Type: Application
    Filed: October 29, 2024
    Publication date: February 13, 2025
    Inventors: Yasutoshi AKIBA, Jeffrey ERIC
  • Publication number: 20250037673
    Abstract: A circuit device controls a display device including light source elements and a display panel. The circuit device includes a luminance analysis circuit and a dimmer circuit. The luminance analysis circuit performs luminance analysis on image data of an input image to output luminance information. The dimmer circuit performs local dimming processing for dimming each of the light source elements based on the luminance information and global dimming processing using a global dimming parameter based on a sensor output of an ambient light sensor, to determine light source luminance information indicating light-emission luminance of each of the light source elements. The dimmer circuit performs dimming processing in which a speed to change the light-emission luminance in the global dimming processing is slower than a speed to change the light-emission luminance in the local dimming processing.
    Type: Application
    Filed: July 10, 2024
    Publication date: January 30, 2025
    Inventors: Sebdani mahmood MAZROUEI, Kumar anandabairavasamy ANAND, Stanislav ZAOZERSKII, Yasutoshi AKIBA
  • Publication number: 20250037674
    Abstract: A circuit device includes a luminance analysis circuit and a dimmer circuit. The luminance analysis circuit performs luminance analysis on image data of an input image to output luminance information. The dimmer circuit determines light source luminance information indicating light-emission luminance of each of light source elements according to the luminance information. The dimmer circuit determines the light-emission luminance of the light source element from the luminance information of a pixel by using a weight corresponding to a distance between the pixel and the light source element. The dimmer circuit sets an attenuation degree of the weight with respect to the distance to a first attenuation degree when a global dimming parameter is a first value. The dimmer circuit sets the attenuation degree to a second attenuation degree higher than the first attenuation degree when the global dimming parameter is a second value smaller than the first value.
    Type: Application
    Filed: July 26, 2024
    Publication date: January 30, 2025
    Inventors: Sebdani mahmood MAZROUEI, Kumar anandabairavasamy ANAND, Stanislav ZAOZERSKII, Yasutoshi AKIBA
  • Patent number: 12210426
    Abstract: A control system includes: an image processing circuit; a first error detection circuit configured to perform first error detection on second image data; a first error code value generation circuit configured to generate a first error code value based on the second image data; a transmission interface circuit; a reception interface circuit; a second error code value generation circuit configured to generate a second error code value based on the second image data; a second error detection circuit configured to perform second error detection based on the first error code value and the second error code value; and a control circuit configured to output a control signal when an error is detected in at least one of the first error detection and the second error detection.
    Type: Grant
    Filed: September 1, 2022
    Date of Patent: January 28, 2025
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Yasutoshi Akiba, Jeffrey Eric
  • Patent number: 12170069
    Abstract: A display system includes a circuit device and a first light source driver to an n-th light source driver. The circuit device performs local dimming control on a display device including a display panel and a backlight. The first light source driver to the n-th light source driver drive the backlight based on dimming information of the local dimming control. An i-th light source driver PWM-drives an i-th light source element group among the first light source element group to the n-th light source element group provided in a target area based on dimming information for the target area. The target area is an area to be driven by the first light source driver to the n-th light source driver among a plurality of areas of the backlight in the local dimming control.
    Type: Grant
    Filed: July 10, 2023
    Date of Patent: December 17, 2024
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Tatsuhiro Hasu, Yasutoshi Akiba
  • Patent number: 12112714
    Abstract: A circuit device includes a luminance analysis circuit, a luminance information calculation circuit, and a color correction circuit. The luminance analysis circuit executes luminance analysis on image data, and obtains dimming information for local dimming control based on a result of the luminance analysis. The luminance information calculation circuit calculates, based on the dimming information on n×m light source elements, luminance information indicating a luminance of light reaching a target pixel from the n×m light source elements. Among the plurality of light source elements of the backlight, the n×m light source elements are arranged around the target pixel for color correction in the local dimming control. The color correction circuit executes color correction on image data on the target pixel based on the luminance information, and outputs the image data after the color correction to the display device.
    Type: Grant
    Filed: July 10, 2023
    Date of Patent: October 8, 2024
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Yasutoshi Akiba, Kumar Anandabairavasamy Anand, Sebdani Mahmood Mazrouei, Tyler Dahlman
  • Publication number: 20240321154
    Abstract: A circuit device includes a storing section configured to store a rendering image and a warp processing section. The warp processing section includes a coordinate converting section, a coordinate-address converting section, and an output section. The coordinate converting section converts, with coordinate conversion based on warp parameters and rotation correction parameters, an output coordinate, which is a coordinate on a display image, into an input coordinate, which is a coordinate on the rendering image. The coordinate-address converting section converts the input coordinate into a read address of the storing section. The output section reads out pixel data of the rendering image from the read address of the storing section and outputs, based on the read-out pixel data, pixel data in the output coordinate of the display image.
    Type: Application
    Filed: June 5, 2024
    Publication date: September 26, 2024
    Inventors: Yasutoshi AKIBA, Jeffrey ERIC
  • Publication number: 20240265488
    Abstract: A circuit apparatus includes a memory unit and a warp processing unit. The memory unit stores a warp object image. The warp processing unit performs warp processing on the warp object image and generates a display image displayed in a display area. The warp processing unit performs the warp processing on an image of a first view object of the warp object image based on a first warp parameter for vibration correction and distortion correction. Further, the warp processing unit performs the warp processing on an image of a second view object of the warp object image based on a second warp parameter for the distortion correction.
    Type: Application
    Filed: March 27, 2024
    Publication date: August 8, 2024
    Inventors: Yasutoshi AKIBA, Kumar Anandabairavasamy ANAND, Jeffrey ERIC
  • Patent number: 12020605
    Abstract: A circuit device includes a storing section configured to store a rendering image and a warp processing section. The warp processing section includes a coordinate converting section, a coordinate-address converting section, and an output section. The coordinate converting section converts, with coordinate conversion based on warp parameters and rotation correction parameters, an output coordinate, which is a coordinate on a display image, into an input coordinate, which is a coordinate on the rendering image. The coordinate-address converting section converts the input coordinate into a read address of the storing section. The output section reads out pixel data of the rendering image from the read address of the storing section and outputs, based on the read-out pixel data, pixel data in the output coordinate of the display image.
    Type: Grant
    Filed: June 1, 2022
    Date of Patent: June 25, 2024
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Yasutoshi Akiba, Jeffrey Eric
  • Publication number: 20240169886
    Abstract: A circuit device includes an image splitting circuit, a first output terminal group to an n-th output terminal group, and a switching circuit. The image splitting circuit splits input image data into first image data and second image data. The switching circuit allocates the first image data to any i output terminal groups among the first output terminal group to the n-th output terminal group, and outputs the first image data from the i output terminal groups to a first display. The switching circuit allocates the second image data to any j output terminal groups among output terminal groups obtained by excluding the i output terminal groups from the first output terminal group to the n-th output terminal group, and outputs the second image data from the j output terminal groups to a second display.
    Type: Application
    Filed: November 16, 2023
    Publication date: May 23, 2024
    Inventor: Yasutoshi AKIBA
  • Patent number: 11983838
    Abstract: A circuit apparatus includes a memory unit and a warp processing unit. The memory unit stores a warp object image. The warp processing unit performs warp processing on the warp object image and generates a display image displayed in a display area. The warp processing unit performs the warp processing on an image of a first view object of the warp object image based on a first warp parameter for vibration correction and distortion correction. Further, the warp processing unit performs the warp processing on an image of a second view object of the warp object image based on a second warp parameter for the distortion correction.
    Type: Grant
    Filed: September 28, 2021
    Date of Patent: May 14, 2024
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Yasutoshi Akiba, Kumar Anandabairavasamy Anand, Jeffrey Eric
  • Patent number: 11930305
    Abstract: A circuit apparatus is used in a laser projector that projects an image onto a projection surface by using laser beams having different wavelengths or a plurality of colors. The circuit apparatus includes a distortion correction circuit and an output circuit. The distortion correction circuit performs distortion correction on a color basis on display image data corresponding to the plurality of colors. The output circuit outputs the display image data as a result of the distortion correction. The distortion correction circuit performs the distortion correction on a color basis by using warp parameters different from one another among the plurality of colors.
    Type: Grant
    Filed: July 8, 2022
    Date of Patent: March 12, 2024
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Yasutoshi Akiba
  • Publication number: 20240038181
    Abstract: A display control system according to an embodiment includes: a processing device configured to calculate global dimming information for global dimming control on a backlight of a display device, and perform color correction on image data based on the global dimming information; and a circuit device configured to perform display control on the display device based on the image data from the processing device. The circuit device includes a dimming control circuit that calculates, based on the image data and the global dimming information from the processing device, local dimming information for local dimming control on the backlight, and a light source control circuit that performs light source control on the backlight based on the local dimming information from the dimming control circuit.
    Type: Application
    Filed: July 26, 2023
    Publication date: February 1, 2024
    Inventors: Shingo NOAMI, Yasutoshi AKIBA
  • Patent number: 11887526
    Abstract: A circuit device includes: a color reduction circuit configured to execute color reduction processing from input image data in which pixel data is m bits to color-reduced image data in which pixel data is n bits, and configured to apply spatial error diffusion or temporal error diffusion in the color reduction processing; a storage circuit storing the color-reduced image data; and an image conversion circuit configured to execute image conversion processing, which is at least one of mapping processing and scaling processing, on the color-reduced image data stored in the storage circuit to output output image data, and configured to execute interpolation processing, which is in the image conversion processing, of generating pixel data of the output image data from a plurality of pieces of pixel data of the color-reduced image data.
    Type: Grant
    Filed: December 22, 2022
    Date of Patent: January 30, 2024
    Inventor: Yasutoshi Akiba
  • Publication number: 20240013739
    Abstract: A circuit device includes a luminance analysis circuit, a luminance information calculation circuit, and a color correction circuit. The luminance analysis circuit executes luminance analysis on image data, and obtains dimming information for local dimming control based on a result of the luminance analysis. The luminance information calculation circuit calculates, based on the dimming information on n×m light source elements, luminance information indicating a luminance of light reaching a target pixel from the n×m light source elements. Among the plurality of light source elements of the backlight, the n×m light source elements are arranged around the target pixel for color correction in the local dimming control. The color correction circuit executes color correction on image data on the target pixel based on the luminance information, and outputs the image data after the color correction to the display device.
    Type: Application
    Filed: July 10, 2023
    Publication date: January 11, 2024
    Inventors: Yasutoshi AKIBA, Kumar anandabairavasamy ANAND, Sebdani Mahmood MAZROUEI, Tyler DAHLMAN
  • Publication number: 20240013738
    Abstract: A display system includes a circuit device and a first light source driver to an n-th light source driver. The circuit device performs local dimming control on a display device including a display panel and a backlight. The first light source driver to the n-th light source driver drive the backlight based on dimming information of the local dimming control. An i-th light source driver PWM-drives an i-th light source element group among the first light source element group to the n-th light source element group provided in a target area based on dimming information for the target area. The target area is an area to be driven by the first light source driver to the n-th light source driver among a plurality of areas of the backlight in the local dimming control.
    Type: Application
    Filed: July 10, 2023
    Publication date: January 11, 2024
    Inventors: Tatsuhiro HASU, Yasutoshi AKIBA
  • Patent number: 11869393
    Abstract: Provided is a circuit device used in a display device of a head-up display that performs image projection using display image data and a light source. The circuit device includes: a dimming control circuit configured to perform dimming control of the light source based on image data; a color correction circuit configured to perform color correction on the image data in accordance with a result of the dimming control to output the display image data; and a blinding error detection circuit configured to perform a blinding error detection process of the head-up display in accordance with the display image data and the result of the dimming control.
    Type: Grant
    Filed: January 27, 2023
    Date of Patent: January 9, 2024
    Inventor: Yasutoshi Akiba
  • Patent number: 11837183
    Abstract: A circuit device is used in a head-up display device including a display panel and a backlight device having a plurality of light emitting elements. The circuit device includes a distortion correction circuit and an image analysis circuit. The distortion correction circuit performs distortion correction on input image data and outputs output image data after the distortion correction. The image analysis circuit analyzes image data to be analyzed, which is the input image data or the output image data, and, based on an analysis result, and performs backlight control processing of turning off a light emitting element corresponding to a display area that becomes transparent when projected by the head-up display device among a plurality of display areas corresponding to the plurality of light emitting elements in the display panel.
    Type: Grant
    Filed: October 11, 2022
    Date of Patent: December 5, 2023
    Inventor: Yasutoshi Akiba
  • Publication number: 20230274712
    Abstract: Provided is a circuit device used in a display device of a head-up display that performs image projection using display image data and a light source. The circuit device includes: a dimming control circuit configured to perform dimming control of the light source based on image data; a color correction circuit configured to perform color correction on the image data in accordance with a result of the dimming control to output the display image data; and a blinding error detection circuit configured to perform a blinding error detection process of the head-up display in accordance with the display image data and the result of the dimming control.
    Type: Application
    Filed: January 27, 2023
    Publication date: August 31, 2023
    Inventor: Yasutoshi AKIBA