| 摘要 |
PROBLEM TO BE SOLVED: To provide a new method for adjusting the luminance power of a displayed picture to an actual viewing environment and contrast setting without reducing the number of video levels displayed. SOLUTION: The present invention relates to a new method for power level control of a display device and to an apparatus for carrying out the method. Classically, the contrast/brightness control and the power management (based on an average power level control) are made independently. These two controls can be contradictory. According to the present invention, the power level mode, more particularly, the number of sustain pulses within a video frame is selected as a function of the average power level (APL) of the picture to be displayed and the picture control signal representing the desired contrast and/or brightness value. COPYRIGHT: (C)2007,JPO&INPIT
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