An implementation of CABAC decoder
Shaojun Wei · Journal of Circuits and Systems · 2013
CABAC(Context-based Adaptive Binary Arithmetic coding) is an efficient entropy codec which adopt by H.264.It has a better compression rate than others,such like CAVLC,but harder to implement.This paper gives out an implementation of one-cycle CABAC decoder base on the previous work[1].The critical paths are improved by table replacing,branch prediction,logic moving and inverter optimization;the area is also reduced by registers redesigning.The decoder is typed out,test chip achieves a decoding rate of 250Mbin/s @1.03mW and reduces 46% area consuming comparing with the previous implementation.