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公开(公告)号：US20230274712A1
公开(公告)日：2023-08-31
申请号：US18160558
申请日：2023-01-27
发明人： Yasutoshi AKIBA
CPC分类号： G09G3/3426 , G06T5/006 , G09G3/36 , G09G2320/0626 , G09G2320/0666 , G09G2360/16
摘要： 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.
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公开(公告)号：US20230245627A1
公开(公告)日：2023-08-03
申请号：US18160685
申请日：2023-01-27
发明人： Yasutoshi AKIBA
IPC分类号： G09G3/34
CPC分类号： G09G3/3406 , G09G2320/0242 , G09G2320/0626 , G09G2360/16 , G09G2320/0233
摘要： A circuit device includes: a color correction circuit configured to perform color correction on image data to output display image data to a display device; a reverse color correction circuit configured to perform reverse color correction of the color correction on the display image data to output image data after being subjected to the reverse color correction; and a comparison circuit configured to compare the image data with the image data after being subjected to the reverse color correction to output a result of the comparison as error detection information of the display image data.
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公开(公告)号：US20200342567A1
公开(公告)日：2020-10-29
申请号：US16860142
申请日：2020-04-28
摘要： A circuit device (100) includes a coordinate transform circuit (20) and a mapping processing circuit (30). The coordinate transform circuit (20) performs coordinate transformation from an input coordinate (IXY1) to an output coordinate (QXY1). The mapping processing circuit (30) generates a second image (IMG2) to be displayed in a display panel for displaying an image in a curved screen display by performing mapping processing on a first image (IMG1) that is input based on the output coordinate (QXY1). The coordinate transform circuit (20) performs the coordinate transformation from the input coordinate (IXY1) to the output coordinate (QXY1) by performing computation processing using a second or more order polynomial representing the coordinate transformation.
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公开(公告)号：US20240013739A1
公开(公告)日：2024-01-11
申请号：US18349747
申请日：2023-07-10
IPC分类号： G09G3/34
CPC分类号： G09G3/3426 , G09G2360/16 , G09G2320/0646 , G09G2310/08 , G09G2320/0242
摘要： 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.
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公开(公告)号：US20240013738A1
公开(公告)日：2024-01-11
申请号：US18349679
申请日：2023-07-10
发明人： Tatsuhiro HASU , Yasutoshi AKIBA
IPC分类号： G09G3/34
CPC分类号： G09G3/3426 , G09G2320/064 , G09G2320/0242 , G09G2320/0247 , G09G2310/08
摘要： 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.
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公开(公告)号：US20230140248A1
公开(公告)日：2023-05-04
申请号：US17974822
申请日：2022-10-27
IPC分类号： G02B27/01
摘要： 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 performs detection of a distortion correction error of the respective second divisional areas by comparing the input image data of the respective first divisional areas to the output image data of the respective second divisional areas.
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公开(公告)号：US20240265488A1
公开(公告)日：2024-08-08
申请号：US18618059
申请日：2024-03-27
CPC分类号： G06T3/18 , G02B27/0101 , G06T5/50 , G06T5/80 , G02B2027/014 , G06T2207/20221
摘要： 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.
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公开(公告)号：US20230206814A1
公开(公告)日：2023-06-29
申请号：US18086704
申请日：2022-12-22
发明人： Yasutoshi AKIBA
IPC分类号： G09G3/20
CPC分类号： G09G3/2066 , G09G2320/0271 , G09G2340/06 , G09G2360/12
摘要： 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.
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公开(公告)号：US20230111544A1
公开(公告)日：2023-04-13
申请号：US17963224
申请日：2022-10-11
发明人： Yasutoshi AKIBA
摘要： 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.
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公开(公告)号：US20230011356A1
公开(公告)日：2023-01-12
申请号：US17860133
申请日：2022-07-08
发明人： Yasutoshi AKIBA
IPC分类号： H04N9/31
摘要： 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.
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