Dynamic control method, useful for controlling backlight module of a liquid crystal display, comprises capturing image data with many grayscale levels, and performing statistical analysis for generating many distribution factors from data

摘要

Dynamic control method for controlling a backlight module of a liquid crystal display (LCD), comprises: capturing an image data including many grayscale levels; performing a statistical analysis for generating many distribution factors from the data; transferring the data without modification to the LCD when the data representing a static image; and transferring the data with a modification to the LCD, and setting the module to a reduced intensity when a maximum value in the grayscale values is not close to a maximum value of the grayscale level of the LCD's. Dynamic control method for controlling a backlight module of a liquid crystal display (LCD), comprises: (a) capturing an image data including many grayscale levels, where the image data is used to display the grayscale levels in at least one color to the LCD; (b) performing a statistical analysis for generating many distribution factors from the image data; (c) determining whether the image data representing a static image; (d) transferring the image data without modification to the LCD for the case, the image data representing the static image, and obtaining the same intensity of the backlight module, or shortening the switching duration of the backlight module; (e) determining whether an average of the grayscale level lies close to a maximum value in grayscale values for the case, the image data representing the static image, where the average of the grayscale level and the maximum value in the grayscale values are included in the distribution factors; (f) transferring the image data without modification to the LCD, and obtaining the same intensity of the backlight module or setting the backlight module to a determined intensity when the average of the grayscale level is close to the maximum value in the grayscale values; (g) determining whether the maximum value in the grayscale values is close to a maximum value of the grayscale level of the LCD's, when the average of the grayscale level is close to the maximum value in the grayscale values; (h) transferring the image data without modification to the LCD, and setting the backlight module to the determined intensity for the case the maximum value in the grayscale values is close to the maximum value of the grayscale level of the LCD's; (j) transferring the image data with a modification by transformation of a gamma curve or a linear equation to the LCD, and setting the backlight module to a reduced intensity when the maximum value in the grayscale values is not close to the maximum value of the grayscale level of the LCD's; and (k) repeating the steps (a)-(j) for the next image data.