CONTEXT-BASED ADAPTIVE VARIABLE LENGTH CODING DECODER FOR H.264/AVC

摘要

PURPOSE: A context-based adaptive variable length coding decoder for a H.264/AVC is provided to form a CAVLC decoder with a reduced look-up table by providing a CAVLC(Context-based Adaptive Variable Length Coding) decoder which generates a symbol length of total zeros and a coeff token with an arithmetic operation. CONSTITUTION: A bit stream register stores a bit stream value. A flush unit renews the bit stream register. A leading zero detector detects a leading zero. An information generator generates a suffix bit stream from bit streams. A sub decoder block includes a coeff token & Tls sign decoder, a total zeros decoder, a level decoder, and a multi symbol run before decoder. A controller controls the sub decoder block.