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.

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.

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.

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.

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.

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.

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.

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.

Abstract: 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.

Abstract: A circuit device 100 includes an error detection circuit 110 and a processing circuit 120. The error detection circuit 110 obtains a glare index value, which is an index value indicating glare of a head-up display, based on image data IMD for head-up display. The error detection circuit 110 determines whether or not a glare index value has exceeded a first threshold value, and when the glare index value exceeds the first threshold value, detects occurrence of a first glare error. When occurrence of a first glare error is detected, the processing circuit 120 performs processing corresponding to the first glare error.

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.

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 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.

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.

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.

Abstract: A circuit device includes a storage circuit, an image conversion circuit, and an error detection circuit. The storage circuit stores received first image data. The image conversion circuit executes an image conversion by a coordinate conversion on the first image data by outputting a reference coordinate indicating a pixel position on the first image data and outputting second image data based on pixel data that is read from the storage circuit based on the output reference coordinate. The error detection circuit executes error detection on the reference coordinate output by the image conversion circuit.

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.

Abstract: An image dividing circuit includes an input interface circuit that receives input image data configured by a total number of horizontal pixels HT, an image data dividing circuit that divides the input image data into first to n-th output image data, and an output interface circuit that includes output circuits for first to n-th channels that output the first to n-th output image data. The parameter n is an integer greater than or equal to 3, and the parameter HT is not an integer multiple of the parameter n. An output circuit for an i-th channel outputs i-th output image data in which at least one of the total number of horizontal pixels and the total number of vertical lines in the i-th channel has been variably adjusted. The parameter i is an integer greater than or equal to 1 but smaller than or equal to n.

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.

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.

Abstract: An image dividing circuit includes an input interface circuit that receives input image data configured by a total number of horizontal pixels HT, an image data dividing circuit that divides the input image data into first to n-th output image data, and an output interface circuit that includes output circuits for first to n-th channels that output the first to n-th output image data. The parameter n is an integer greater than or equal to 3, and the parameter HT is not an integer multiple of the parameter n. An output circuit for an i-th channel outputs i-th output image data in which at least one of the total number of horizontal pixels and the total number of vertical lines in the i-th channel has been variably adjusted. The parameter i is an integer greater than or equal to 1 but smaller than or equal to n.