Patent ID: 8773348

Claim:
A driving device used in a display equipment, the display equipment comprising a light modulator for image display and a light source emitting light into the light modulator, wherein the driving device is used to control the light source and drive the light modulator, the driving device comprising: a detection unit, which is used to select pixel data at a specified location of a first image signal and a last image signal of an image currently displayed within a determined time section; an interpretation unit, which is used to compare and interpret the pixel data detected in the first image signal and the last image signal; a conversion unit, which is used to convert an interpretation results information of the interpretation unit into a standard signal used for adjusting the light intensity of the light source; and a light source adjustment unit, which is used to adjust the light intensity of the light source according to the standard signal of the conversion unit, wherein when the judgment result of the interpretation unit is that the pixel data detected from the first image signal and from the last image signal are the same and the image is a static image, the light source conversion unit outputs a standard signal corresponding to a first drive power; otherwise, when the image is a video image, the light source conversion unit outputs a standard signal corresponding to a second drive power, wherein the first drive power is higher than the second drive power.