Dynamic subfield coding method for color plasma display image
A technology of a plasma display screen and an encoding method, which is applied in the field of dynamic subfield encoding of a color plasma display screen image, can solve the problems that MPD cannot achieve the best, cannot take into account the brightness level, etc., and achieves the goal of reducing dynamic false contours and improving image quality. Effect
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Embodiment 1
[0054] Such as figure 1 , the original data DATA first passes through the finder 11, and the output of the finder 11 is a one-to-many encoding scheme, and outputs K groups of subfield encodings, that is, outputs all possible subfield encoding schemes of a certain brightness level represented by the original data DATA. These K groups of subfield codes are sent to MPD calculator 12 and selector 14 for use. The MPD calculator 12 performs MPD calculation on the K groups of subfield codes input by the finder 11 and the processed subfield coding scheme of the last adjacent pixel unit sent from the buffer 15, and K groups of calculation results are obtained and sent for comparison Device 13. In the comparator 13 , the K groups of MPD values sent by the MPD calculator 12 are compared with each other to find the minimum MPD value, and the comparison result is sent to the selector 14 . The selector 14 selects a group of coded outputs from the K groups of subfield codes sent by the f...
Embodiment 2
[0059] Such as figure 2 , the original data DATA first passes through a finder 21, and the output result of the finder 21 is input to the finder 22. A total of K look-up tables are set in the finder 22, and the finder 22 searches for a corresponding one according to the output of the finder 21. The output of the look-up table is exactly all subfield encoding schemes corresponding to the original luminance DATA, which is also 1 To-many correspondence; the result of each lookup table is input to the corresponding MPD calculator, represented as MPD calculator 23 . In the MPD calculator 23, there are K path MPD calculators corresponding to the K look-up tables contained in the finder 22, and the MPD calculations are carried out with the subfield encoding (from the buffer 27) of the processed adjacent pixels respectively, which The calculation result is input to the comparator corresponding to the comparator 24 . Corresponding K comparators are also arranged in the comparator 24...
Embodiment 3
[0064] Such as image 3As shown, the original data DATA first passes through a finder 31, and the search result is output to the finder 32. In the finder 32, K tables are set for searching, and the finder 32 searches for a corresponding look-up table and a certain address according to the output of the finder 31, and its output is exactly all sub-levels corresponding to a certain brightness level. Field coding is also a one-to-many correspondence, and the results of these lookup tables are sent to the data format adjustment unit 33 . In the data format adjustment unit 33, the data format adjustment circuits of the K roads corresponding to the look-up table provided in the finder 32 are provided with each other independently, and the data format adjustment circuits of the K roads adjust the different data of the input K roads into a unified The data format is then input to the selector 34. The selector 34 selects a channel of adjusted data input from the data adjustment forma...
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