| 摘要 |
Liquid crystal displays (LCD) have a number of different gradation levels defining the colors in pixels. Blends of the colors and gradation levels of each color are used to change the colors of dots in the LCD. Both the gradation data and address of the data must be transferred from an image data storage to a driver (controlled by a controller) to update the display. This necessarily leads to the transfer of a large amount of data and consequently leads to the use of a correspondingly large amount of current and the consumption of a large amount of power. To decrease the power consumption, an on/off flag is set for each dot in each of the 15 frames that compose a display screen. The gradation of a dot is determined by ratio of on/off states. The state is held for continuous driving by the driver until the next value is written to the memory, i.e. only dots that have intermediate gradations will have a state change. The controller does not regulate/transfer data for colors that are continuously on or off over one screen, thus decreasing the overall current.
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