Abstract: Disclosure is a method for randomly and dynamically generating a dynamic index, incorporated in a dynamic index system to improve the color performance of a display, comprises: transmitting video data to the dynamic index system; dynamically generating a substantially random number by a pseudo-random number generating unit; selecting the m bits of the substantially random number as a target adapted to as a position code of the dynamic pattern index matrix; and generating the two-dimensional dynamic pattern index matrix (M×N) by operating the position code.

Abstract: Disclosured is a dithering system applied to a multimedia player. The dithering system comprises a pattern generator to generate video data; a processing unit to receive the video data as pre-processed by way of fixed-pattern and output; a timing controller to receive the output video data; and a dynamic index system comprising a pseudo-random generating unit and a dynamic pattern index generating unit, wherein the dynamic index system receives the video data provided by the timing controller, then a substantially random number is generated via the operation of the pseudo-random generating unit, continuously a dynamic pattern index is generated via the operation of the dynamic pattern index generating unit so as to allow the dynamic pattern index be the index of the dithering data.

Abstract: In the liquid crystal display device having a back-light source for illumination, image data is provided to the panel in successive frames such that the optical response of the liquid crystal in each pixel within a frame period has an impulse-like shape. The back-light source is controlled to illuminate the liquid crystal display panel such that the illumination is provided to the pixels for only part of the frame period. The optical response curve has a rising portion followed by a falling portion, and the back-light source is controlled by a timing control module such that the back-light is turned off at least when the optical response curve is in the falling portion. It is also possible to remove the image data from the pixels, or to control the charging and discharging of the electrodes to produce the impulse-like shape.

Abstract: Amethod for processing an image is provided. The method is to calculate the amount of original gray levels in a frame according to the original gray level difference between each pixel and an adjacent pixel thereof and adjusts the contrast of the frame according to the calculated amount of gray levels and the contrast difference between the current frame and the previous frame.

Abstract: DDR_SDRAM chips running at 1.5 clock rate are used for transferring image data from an image data source to a source driver in a display panel. In general, P DDR_SDRAM chips running at a 1.5 clock rate are used to store frame data in N frames. If the frame date in each of the N frames is n bits and the memory space in the DDR_SDRAM chip is m, then P is a smallest integer equal to or greater than N multiplied by (n/m). In data transfer in a frame, a line period is partitioned into N segments and each DDR-SDRAM chip is separated into (N?1) parts such that the parts are used to read different data in the different frames. In order to share I/O pins when using a number of DDR_SDRAM chips, the read/write sequence for the all DDR_SDRAM chips follows the same command and address.

Abstract: A method for driving an active matrix display wherein each image frame is divided into a number of displayed frame portions, each of which is followed by a darker frame portion. The image data in the darker frame portion is removed so as to allow the pixel luminance to diminish. The temporal separation between the displayed frame portion and the following darker frame portion is smaller than a frame time. In a display where the lines are driven repetitively for forming the display image in a plurality of frame times, the image data provided to a pixel, after the luminance in that pixel changes from low to high, is adjusted so that the brightness of the pixel in the preceding frame times appear higher or not lower than that in following frames times.

Abstract: An image sharpness method is provided. The image sharpness method includes the steps of determining a plurality of sharpness gray level increments for a current pixel in accordance with a non-linear visual function and gray level differences between the current pixel and the neighboring pixels of the current pixel, using the sum of the sharpness gray level increments as a total sharpness gray level increment, and using the sum of the total sharpness gray level increment and the gray level of the current pixel as a sharpness gray level of the current pixel.

Abstract: A method for driving a liquid crystal display includes: a) receiving a video signal from a first group of gray scales values; b) comparing a current frame of the video signal with a previous frame to determine whether the current frame is in a static state or in a dynamic state; c) when the current frame is determined to be in the static state, converting the video signal to a driving signal; d) when the current frame is determined to be in the dynamic state, calculating a overdrive signal. The value of the driving signal is selected from a second group of gray scale values having at least one decimal point gray scale and having the same number of gray scale values as that of the first group of gray scale values. The value of the overdrive signal is selected from the first group of gray scale values.

Abstract: A system for driving a liquid crystal display is provided. The system receives a video signal including a first predetermined gray level signal and a second predetermined gray level signal. The system includes a memory, an impulse signal module, a first multiplexer and a detection unit. The memory stores the first predetermined gray level signal. The impulse signal module receives the first and second predetermined gray level signal to generate a plurality of impulse signals. The first multiplexer receives the plurality of impulse signals and outputs the second predetermined gray level signal or the plurality of impulse signals according to the first control signal. The detection unit generates a first control signal to be applied to the first multiplexer according to the first predetermined gray level signal and the second predetermined gray level signal.

Abstract: A pixel driving method is used in a liquid crystal display. First, a temperature t of the liquid crystal display is detected. An initial level, and a target level are provided. A corresponding coefficient an is looked up in a lookup table based on the initial level and the target level. An overdrive level OD is estimated by substituting the coefficient an and a function of the temperature f(t) into the formula: OD = ? n = 0 N ? a n ? f ? ( t ) n Thereafter, a pixel is driven by the overdrive level OD to reach the target level within a time frame. The lookup table comprises a plurality of columns and rows. The columns define the initial levels, and the rows define the target levels. Each of a plurality of coefficients an corresponds to an intersection formed by one column and one row.

Abstract: A display driving circuit. The circuit comprises a data driver outputting a first, second, third and fourth data signal through a data line, a scan driver outputting a first and second scan signal through a first and second scan line, a first, second, third and fourth display cell receiving the first, second, third and fourth data signal through the data line and receiving the first and second scan signal through the first and second scan line, a first switch coupling the first display cell to the data line when the first scan and data signals are asserted, and isolating them from each other when the first scan and second data signals are asserted, and a second switch coupling the third display cell to the data line when the second scan and third data signals are asserted, and isolating them from each other when the second scan and fourth data signals are asserted.

Abstract: A scan method for use in a flat panel display comprising K groups of lines, comprising the following steps. First, K sequences S1 to SK are provided. A scan order is then determined according to the K sequences S1 to SK. Thereafter, the K groups of lines are synchronously scanned by the scan order. K is an integer not less than 2. Each group of lines comprises at least M lines.

Abstract: A LCD (Liquid Crystal Display) with improved motion image quality and a driving method therefor. The LCD includes a pixel, a data driving circuit and a scan driving circuit. The data driving circuit generates over driving pixel data and gray pixel data according to pixel data of a Nth frame and pixel data of a (N+1)th frame, and outputs driving voltages, which correspond to the over driving pixel data, black pixel data and the gray pixel data, to the pixel at first, second and third time. The scan driving circuit outputs a scan signal at the first time, second time and third time to enable the pixel to receive the driving voltages corresponding to the over driving pixel data, the black pixel data and the gray pixel data. The driving voltages enables the pixel to generate a brightness curve similar to a pulse curve.

Abstract: A method for driving a liquid crystal display (LCD) includes receiving image data of each display unit of the LCD in every display period to determine gray levels of the display units, controlling a gate driver of the LCD to scan each of the display units at least twice every display period, controlling a source driver of the LCD to generate a switch signal, controlling the source driver to determine the gray levels of one row of the display units when the switch signal is at a first voltage level, and controlling the source driver to drive one row of the display units to a predetermined gray level status when the switch signal is at a second voltage level.

Abstract: A method of multiple-frame scanns for a display includes generating K line-triggering signals within a period in which one frame is finished completed scanning from a first line to a last line, generating K clocks of different phases for triggering K input data, and displaying K input data on the display according to the K line-triggering signals and the K clocks of different phases.

Abstract: A display driving circuit. The circuit comprises a data driver outputting a first, second, third and fourth data signal through a data line, a scan driver outputting a first and second scan signal through a first and second scan line, a first, second, third and fourth display cell receiving the first, second, third and fourth data signal through the data line and receiving the first and second scan signal through the first and second scan line, a first switch coupling the first display cell to the data line when the first scan and data signals are asserted, and isolating them from each other when the first scan and second data signals are asserted, and a second switch coupling the third display cell to the data line when the second scan and third data signals are asserted, and isolating them from each other when the second scan and fourth data signals are asserted.