Abstract: For performing saturation control of one or more selected colors of the image, respective color values of the selected color(s) are pre-defined. Meanwhile, a specified pixel is selected from the image. Then distance(s) between the color space coordinate of the specified pixel and the color space coordinate(s) of the selected color(s) is (are) calculated. The color values of the specified pixel are thus adjusted depending on comparing results of the distance(s) with corresponding threshold distance(s).

Abstract: Method and related circuit for color depth enhancement of displays is provided. In an embodiment of the invention, when emulating an interpolated color level between a first and a second color levels the display can display, a color channel component of the first color level and another color channel component of the second color level are selected for color dithering and color depth enhancement.

Abstract: In an image compensation method, formats of images are identified based on ambient color quantity information. If the image is in text format or of high contrast, over compensation is barred to avoid edge effect. A compensation coefficient is set basing on edge eigenvalue of images. The compensation value is fine tuned based on a threshold value to obtain finer compensation result.

Abstract: Input image signals are spatially and temporally compensated. First, gray scales of a target pixel in a current frame and in a previous frame are compared to determine whether to spatially and temporally compensate the input image signals or not. Next, in accordance to weight parameters and gray scales of pixels adjacent to the target pixel, the target pixel of the current frame is spatially compensated. Further, based on the gray scale of the target pixel of the previous frame, the target pixel of the current frame after spatial compensation is temporally compensated.

Abstract: A control circuit of a liquid crystal display (LCD) panel and a method thereof are provided. The circuit includes a frame memory, a look-up table (LUT) module, and a signal processor. The frame memory provides a previous value of a pixel, and the previous value includes at least one bit of a previous frame data of the pixel. The LUT module provides a plurality of basic values according to the previous value and a current value of the pixel, and the current value includes at least one bit of a current frame data of the pixel. The signal processor produces a driving value according to the basic values and replaces the current frame data with the driving value.

Abstract: A method for color correction is provided. In this method, a plurality of groups of gray levels and luminance of light source of display device are respectively selected by color measurement system. The selected data of each color light are respectively calculated to obtain fitting functions which can fit the gray level data of each interval. The fitting luminance of the gray levels in interval is obtained by the fitting function and formed into a lookup table. Then in order to correspond a gamma curve of normalized gray data of image to a predetermined target curve, the two gamma curves are first taken to logarithmic calculation and the modified gray signals are obtained from the lookup table, then the modified gray signals are transmitted out for providing the display device to express the gray distribution state. The method for color correction is applicable to various display devices, especially liquid crystal display device.

Abstract: A method for color correction is provided. In this method, a plurality of groups of gray levels and luminance of light source of display device are respectively selected by color measurement system. The selected data of each color light are respectively calculated to obtain fitting functions which can fit the gray level data of each interval. The fitting luminance of the gray levels in interval is obtained by the fitting function and formed into a lookup table. Then in order to correspond a gamma curve of normalized gray data of image to a predetermined target curve, the two gamma curves are first taken to logarithmic calculation and the modified gray signals are obtained from the lookup table, then the modified gray signals are transmitted out for providing the display device to express the gray distribution state. The method for color correction is applicable to various display devices, especially liquid crystal display device.