UNIFIED TRANSFORM UNIT OF H.264 ENCODER, CAPABLE OF MAXIMALLY ENHANCING THE PERFORMANCE THROUGH CONTROLLING THE FLOW OF DATA

摘要

PURPOSE: A unified transform unit of H.264 encoder is provided to process forward integer conversion, quantization, backward quantization, backward integer conversion, Hahamard conversion at one converter through controlling flow of data, thereby minimizing hardware cost.;CONSTITUTION: A forward integer converter(10) performs 2-D integer transform by repeating performance of 1-D integer transform. A forward Hadamard buffer(50) stores output value of DC(Direct Current). A quantization unit(20) quantizes value of the forward integer conversion unit. A backward quantization unit(30) restores value of the quantization unit to pervious state of the quantization. A backward integer converter(40) performs 2-D integer conversion by repeating performance of 1-D integer conversion about output value of the backward quantization unit.;COPYRIGHT KIPO 2010