CABAC BINARY ARITHMETIC ENCODER FOR HIGH SPEED PROCESSING OF UHD IMGE

摘要

The present invention relates to a CABAC binary arithmetic encoder for high-speed processing of UHD images, and when the context model value (ValMPS) input from the context modeler is equal to the bin value (binVal), the symbol (MPS) having the highest probability of exiting the current encoding bin (MPS) , Least Probable Symbol (LPS) that determines the least likely probability of exiting the current coding bin if ValMPS is not equal to the bin value, and, if the ValMPS is not equal to the bin value, the current coding bin When the range of the range (Range) is less than a certain range, the range update stage to perform the normalization, and outputs the range of the normalization (Cnt_RenormE) and the MPS range (rMPS) required for calculating the minimum boundary value (Low) of the range. Add the value of rMPS and the Low to obtain the ivlLow value for the next call, and it is necessary to generate a bitstream for the currently encoded bin through the ivlLow value and the Cnt_RenormE. By yirueojim the bit stream through the information bits for the blank to a minimum threshold update stage and the current encoding and outputting the information bits to the bit stream generation stage for outputting, it is possible to reduce the maximum delay time (Critical Path) optimally.