Abstract: An image compensation circuit for controlling a luminance of a display panel is configured to: receive a plurality of image data; perform gamma tuning to convert the plurality of image data into a plurality of original gamma codes according to a plurality of first compensation values corresponding to a first operation mode; calculate a plurality of gamma difference values between the plurality of first compensation values and a plurality of second compensation values corresponding to a second operation mode; and calculate a plurality of output gamma codes corresponding to the second operation mode according to the plurality of original gamma codes by using the plurality of gamma difference values.

Abstract: The invention provides a color calibration device, a color calibration method and a calibration table generation method. The color calibration device includes a calibration table circuit, a ratio circuit and an image processing circuit. The calibration table circuit provides a selected calibration table including a plurality of zone calibration parameters. Each of the zone calibration parameters corresponds to a corresponding zone among a plurality of zones of a display panel. The ratio circuit calculates a subpixel calibration parameter corresponding to a current subpixel according to at least one of the zone calibration parameters in the selected calibration table. The image processing circuit calibrates original subpixel data of the current subpixel according to the subpixel calibration parameter to generate calibrated subpixel data of the current subpixel.

Abstract: The present invention provides an image compensation circuit generating output image data to drive a display panel having pixels. The image compensation circuit includes first/second control circuits and first/second compensation circuits. The first control circuit may receive input image data for the pixels and generate a plurality of first compensation values corresponding to compensation for voltage drop on the display panel according to the input image data. The first compensation circuit may compensate the input image data for the pixels with the first compensation values. The second control circuit may receive the first compensation values from the first control circuit and generate a plurality of second compensation values corresponding to compensation for channel length modulation (CLM) effect of the pixels according to the first compensation values.

Abstract: An electronic device includes three delay-locked loops, three dummy voter circuits, and a voter circuit. Each of the three delay-locked loops has a first input end, a second input end, an output end to maintain the phase difference between the reference clock signal received from the first input end and the intermediate clock signal output from the output end. Each of the three voter circuits is connected between the second input end and the output end of each of the three delay-locked loops to delay the phase of the intermediate clock signal by the phase difference. The voter circuit receives the intermediate clock signal from each of the three delay-locked loops, and outputs an output clock signal according to the logic of the intermediate clock signal from each of the three delay-locked loops. The phase difference compensates for the phase delay of the intermediate clock signal passing through the voter circuit.

Abstract: The present invention provides an image compensation circuit generating output image data to drive a display panel having pixels. The image compensation circuit includes first/second control circuits and first/second compensation circuits. The first control circuit may receive input image data for the pixels and generate a plurality of first compensation values corresponding to compensation for voltage drop on the display panel according to the input image data. The first compensation circuit may compensate the input image data for the pixels with the first compensation values. The second control circuit may receive the first compensation values from the first control circuit and generate a plurality of second compensation values corresponding to compensation for channel length modulation (CLM) effect of the pixels according to the first compensation values.

Abstract: A display control circuit transforms a plurality of input points of an input image to a plurality of target subpixels of a display panel. In the display panel, a first row of the target subpixels and a second row of the target subpixels are non-aligned in a vertical direction. The display control circuit includes a subpixel rendering circuit. The subpixel rendering circuit maps a first row of the input points to the first row of the target subpixels, and maps a second row of the input points to the second row of the target subpixels. The coordinates of the first row of the input points are respectively equivalent to the coordinates of the first row of the target subpixels. The coordinates of the second row of the input points are respectively equivalent to the coordinates of the second row of the target subpixels being shifted in a horizontal direction.

Abstract: A coordinate mapping method is applied to a plurality of input points of an input image and a plurality of target subpixels of a display panel. In the display panel, a first row of the target subpixels and a second row of the target subpixels are non-aligned in a vertical direction. The coordinate mapping includes the following steps. A first row of the input points are mapped to the first row of the target subpixels, and a second row of the input points are mapped to the second row of the target subpixels. The coordinates of the first row of the input points are respectively equivalent to the coordinates of the first row of the target subpixels. The coordinates of the second row of the input points are respectively equivalent to the coordinates of the second row of the target subpixels being shifted in a horizontal direction.

Abstract: A method of handling overdrive for image data includes the steps of: receiving a current image data and a previous image data; obtaining an overdrive image data by finding an overdrive lookup table according to the current image data and the previous image data; generating a weighting mask comprising a plurality of weighting parameters; calculating an output image data by combining the overdrive image data with the current image data according to one of the weighting parameters corresponding to a pixel of the current image data; and outputting the output image data to the pixel.

Abstract: A method of handling overdrive for image data includes the steps of: receiving a current image data and a previous image data; obtaining an overdrive image data by finding an overdrive lookup table according to the current image data and the previous image data; generating a weighting mask comprising a plurality of weighting parameters; calculating an output image data by combining the overdrive image data with the current image data according to one of the weighting parameters corresponding to a pixel of the current image data; and outputting the output image data to the pixel.

Abstract: An image processing apparatus includes a high-frequency component translating unit, a high-frequency component extracting unit, a detail-gain generating unit and an image output unit. The high-frequency component translating unit extracts and translates first high-frequency components of an input image to generate a first image. The high-frequency component extracting unit extracts second high-frequency components to generate a second image. The detail-gain generating unit stores a conversion table and generates detail gains respectively associated with input pixels in the input image according to pixel values of the input pixels and the conversion table. The image output unit calculates a weighted superposition of the first image and the second image and generates a high frequency component of an output image according to the weighted superposition and the detail gains.

Abstract: An image processing apparatus includes a gradient calculation unit, a direction determining unit, a directional interpolation unit, and a blender unit. The gradient calculation unit processes an input image to generate gradient magnitudes and gradient angles associated with input pixels of the input image. The direction determining unit generates interpolation angles and directional confidence values according to the gradient magnitudes and gradient angles. The directional interpolation unit performs directional interpolation on the input image according to the interpolation angles, so as to generate a first image with an image resolution different from the input image. The blender receives the first image and a second image generated from interpolating the input image, and blends the first image and the second image according to the directional confidence values to generate an output image.

Abstract: An image processing apparatus includes a high-frequency component translating unit, a high-frequency component extracting unit, a detail-gain generating unit and an image output unit. The high-frequency component translating unit extracts and translates first high-frequency components of an input image to generate a first image. The high-frequency component extracting unit extracts second high-frequency components to generate a second image. The detail-gain generating unit stores a conversion table and generates detail gains respectively associated with input pixels in the input image according to pixel values of the input pixels and the conversion table. The image output unit calculates a weighted superposition of the first image and the second image and generates a high frequency component of an output image according to the weighted superposition and the detail gains.

Abstract: An image processing apparatus includes a gradient calculation unit, a direction determining unit, a directional interpolation unit, and a blender unit. The gradient calculation unit processes an input image to generate gradient magnitudes and gradient angles associated with input pixels of the input image. The direction determining unit generates interpolation angles and directional confidence values according to the gradient magnitudes and gradient angles. The directional interpolation unit performs directional interpolation on the input image according to the interpolation angles, so as to generate a first image with an image resolution different from the input image. The blender receives the first image and a second image generated from interpolating the input image, and blends the first image and the second image according to the directional confidence values to generate an output image.