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TECHNIQUE TO INCREASE THE APPARENT DYNAMIC RANGE OF A VISUAL DISPLAY
TECHNIQUE TO INCREASE THE APPARENT DYNAMIC RANGE OF A VISUAL DISPLAY
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机译:扩大视觉显示器视在动态范围的技术
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摘要
A method of digital signal translation wherein the value of a data word 48 is dithered over time such that the average value of the data word 48 is a more accurate approximation of the desired value of than is possible with a single data word of the same resolution. Three non-exclusive embodiments are taught using multiple memory lookup tables 58 to perform the translation function. In one embodiment a counter 60 is used to sequentially select lookup tables for each translation. A second embodiment uses a random means to select the current lookup table. A third embodiment applies temporal dithering to the technique of spatial dithering to dither super-pixels and increase the number of intensity levels a display is capable of displaying.
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