Abstract: A color sequential image method for displaying images using two color fields includes analyzing and sorting percentages of a plurality of colors constituting an input color image, in which a first color possesses a most percentage, a second color possesses a middle percentage, and a third color possesses a third percentage. The method further includes forming a first color field image according to the first color and the third color, and a second color field image according to the second color and the third color.

Abstract: A method, image processing apparatus, and computer readable medium for image enhancement are provided. In the method, a low-resolution image is received and upscaled to generate an upscaled image having first pixels. Edge detection is performed on the upscaled image to obtain edge information of the first pixels. Each piece of the edge information includes an edge direction and an edge intensity, and each of the edge directions includes a horizontal and vertical component having a constant summation. A non-edge region of the upscaled image is enhanced to generate a high-resolution detail image; based on unsharp masking sharpening methods, an edge region of the low-passed upscaled image is enhanced according to the horizontal and vertical components of the edge directions to generate a high-resolution edge image. Image fusion is performed on the high-resolution edge image and the high-resolution detail image according to the edge intensities to generate a super-resolution image.

Abstract: Visual or photic stimuli generating methods, devices and control systems for inducing steady-state visual evoked potential (SSVEP) from human viewers without causing discomfort to the viewers or distorting the embedding images are disclosed. The control system includes a stimuli-generating device and an electroencephalography (EEG) sensing device. The stimuli-generating device includes a first and a second light source. The first light source generates a flickering light with a first wavelength while a second light source generates another flickering light with one or more wavelength(s) differ from that of the first one. Together, the light sources generate visual/photic stimuli flickering above their critical flicker fusion threshold while maintaining the colorfulness and hue of the embedding images. At least one electrode of the EEG sensing device is connected to each viewer, configured to receive and analyze his/her EEG signals in order to detect and determine his/her responses to the stimuli.

Abstract: A color sequential image method for displaying images using two color fields includes analyzing and sorting percentages of a plurality of colors constituting an input color image, in which a first color possesses a most percentage, a second color possesses a middle percentage, and a third color possesses a third percentage. The method further includes forming a first color field image according to the first color and the third color, and a second color field image according to the second color and the third color.

Abstract: A color adjustment method for a color sequential liquid crystal display (LCD) having at least one white light source is provided. In the color adjustment method, firstly, an original image signal is converted into a target color point located in a chromaticity diagram in a color space. Then, a modified image signal having white data is calculated according to the original image signal. Afterwards, the modified image signal is converted into a main color point located in the chromaticity diagram by using a matrix group. Then, a plurality of subfield data are calculated according to the main color point and the target color point. The subfield data are used for enabling the main color point to fall on the target color point.

Abstract: An adaptive feedback control method of a field sequential color display includes: a rearrangement step of converting gray-scale values of a three primary color field of an input image into gray-scale values of a new three primary color field and a dominated color field; a sampling step of performing a pixel sampling on a resolution of the input image in a sampling interval; a feedback control step of performing a pixel by pixel sum operation for each separated color on a color break-up value and a color value of the input image in a Lu?v? color space to obtain a color difference sum, and performing a feedback control at a bit precision on the color difference sum; and a liquid crystal/backlight synchronization step of synchronizing a liquid crystal signal and a backlight grayscale value of the input image according to the minimum color difference sum.

Abstract: An adaptive feedback control method of a field sequential color display includes converting gray-scale values of a three primary color field of an input image into gray-scale values of a new three primary color field and a dominated color field (D-field); performing sampling; performing a pixel by pixel sum operation for each separated color through color gamut conversion to obtain a color difference sum; performing a feedback control at a bit precision to obtain a minimum color difference sum; and then performing a liquid crystal/backlight synchronization step of synchronizing a liquid crystal signal and a backlight gray-scale value of the input image; or dividing the input image into a plurality of blocks; performing feedback control operations; obtaining a minimum sum in each block to serve as an optical backlight value, thereby reducing a CBU phenomenon, and minimizing or controlling the generated CBUs to reduce the operation loads.

Abstract: A cumulative function of image is obtained according to its gray levels of pixels. This function is then mapped to obtain a backlight modulation function according to a reference line. The backlight brightness provided for different regions of the liquid crystal display are decided by the backlight modulation function while displaying the images.

Abstract: A backlight driving method, which provides three kinds of light sources comprising a red light source, a blue light source, and a green light source. The driving method includes dividing a frame into four sub-frames, and lighting the green light sources twice during two sub-frames respectively, dividing the first frame and the second frame into four sub-frames respectively, lighting the four light sources in the four sub-frames in a first lighting order during the first frame, and lighting the four light sources in the four sub-frames using a second lighting order during the second frame, wherein the first order is different from the second order.

Abstract: A method of generating frame control signals for reducing reaction time comprises following steps: analyzing an input frame signal; generating a first reference liquid crystal control signal of a frame; setting a second liquid crystal control signal range and thereby generating a second reference liquid crystal control signal; generating a second backlight control signal according to the first reference liquid crystal control signal and the second reference liquid crystal control signal; and generating a second liquid crystal control signal of each pixel according to the second backlight control signal. By confining the second backlight control signal to the second liquid crystal control signal range, the reaction time of the liquid crystals is reduced and the frame quality of LCD devices is enhanced.

Abstract: The present invention provides a display method for an LCD device with reduced color break-up, comprising the following steps: generating a control signal for each sub-frame, and displaying the sub-frames successively. The present invention generates, according to brightness of a screen to be displayed, second backlight control signals and second LC control signals for each display region in the each sub-frame and then, according to the second backlight control signals and the second LC control signals, displays a chromatic sub-frame and a plurality of monochromatic sub-frames successively so that the screen to be displayed can be viewed through human vision. The present invention can not only facilitate reducing color break-up (CBU) of the LCD device, but also can contributes to the LCD device advantaged by high contrast, high color saturation, low power consumption and low manufacturing costs.

Abstract: A color adjustment method for a color sequential liquid crystal display (LCD) having at least one white light source is provided. In the color adjustment method, firstly, an original image signal is converted into a target color point located in a chromaticity diagram in a color space. Then, a modified image signal having white data is calculated according to the original image signal. Afterwards, the modified image signal is converted into a main color point located in the chromaticity diagram by using a matrix group. Then, a plurality of subfield data are calculated according to the main color point and the target color point. The subfield data are used for enabling the main color point to fall on the target color point.

Abstract: An adaptive feedback control method of a field sequential color display includes converting gray-scale values of a three primary color field of an input image into gray-scale values of a new three primary color field and a dominated color field (D-field); performing sampling; performing a pixel by pixel sum operation for each separated color through color gamut conversion to obtain a color difference sum; performing a feedback control at a bit precision to obtain a minimum color difference sum; and then performing a liquid crystal/backlight synchronization step of synchronizing a liquid crystal signal and a backlight gray-scale value of the input image; or dividing the input image into a plurality of blocks; performing feedback control operations; obtaining a minimum sum in each block to serve as an optical backlight value, thereby reducing a CBU phenomenon, and minimizing or controlling the generated CBUs to reduce the operation loads.

Abstract: An adaptive feedback control method of a field sequential color display includes: a rearrangement step of converting gray-scale values of a three primary color field of an input image into gray-scale values of a new three primary color field and a dominated color field; a sampling step of performing a pixel sampling on a resolution of the input image in a sampling interval; a feedback control step of performing a pixel by pixel sum operation for each separated color on a color break-up value and a color value of the input image in a Lu?v? color space to obtain a color difference sum, and performing a feedback control at a bit precision on the color difference sum; and a liquid crystal/backlight synchronization step of synchronizing a liquid crystal signal and a backlight grayscale value of the input image according to the minimum color difference sum.

Abstract: A color sequential method for displaying images is suitable for applying in a display with pixels. Each of frames is formed by displaying a first sub-frame, a second sub-frame and a third sub-frame within a displaying time by the pixels. By calculating differences in gray levels between neighboring pixels, variations are gained. Then, a first just noticeable difference is provided, and the pixels having the variations larger than the first just noticeable difference are detected. Next, times of displaying the first, the second and the third sub-frames in the pixels are raised within the displaying time.

Abstract: A method of generating frame control signals for reducing reaction time comprises following steps: analyzing an input frame signal; generating a first reference liquid crystal control signal of a frame; setting a second liquid crystal control signal range and thereby generating a second reference liquid crystal control signal; generating a second backlight control signal according to the first reference liquid crystal control signal and the second reference liquid crystal control signal; and generating a second liquid crystal control signal of each pixel according to the second backlight control signal. By confining the second backlight control signal to the second liquid crystal control signal range, the reaction time of the liquid crystals is reduced and the frame quality of LCD devices is enhanced.

Abstract: The present invention provides a display method for an LCD device with reduced color break-up, comprising the following steps: generating a control signal for each sub-frame, and displaying the sub-frames successively. The present invention generates, according to brightness of a screen to be displayed, second backlight control signals and second LC control signals for each display region in the each sub-frame and then, according to the second backlight control signals and the second LC control signals, displays a chromatic sub-frame and a plurality of monochromatic sub-frames successively so that the screen to be displayed can be viewed through human vision. The present invention can not only facilitate reducing color break-up (CBU) of the LCD device, but also can contributes to the LCD device advantaged by high contrast, high color saturation, low power consumption and low manufacturing costs.

Abstract: A backlight driving method, which provides three kinds of light sources comprising a red light source, a blue light source, and a green light source. The driving method includes dividing a frame into four sub-frames, and lighting the green light sources twice during two sub-frames respectively, dividing the first frame and the second frame into four sub-frames respectively, lighting the four light sources in the four sub-frames in a first lighting order during the first frame, and lighting the four light sources in the four sub-frames using a second lighting order during the second frame, wherein the first order is different from the second order.

Abstract: A cumulative function of image is obtained according to its gray levels of pixels. This function is then mapped to obtain a backlight modulation function according to a reference line. The backlight brightness provided for different regions of the liquid crystal display are decided by the backlight modulation function while displaying the images.

Abstract: A fan frame provides fixing parts extending downward to embrace a radiator with a hook end catching lower side of the radiator respectively. A guard device is disposed on the frame with hard skeletons to surround a fan wheel so that fluid can enter the radiator via the openings. Hence, the openings of the guard device can increase flow rate of the fluid entering the radiator, decrease noise and prevent foreign objects entering the fan wheel.