BITSTREAM PROCESSOR OPERATING VARIABLE LENGTH CODE CODEC

摘要

PURPOSE: A bit stream processor processing a variable length code codec is provided to support a multi-standard codec by using a syntax processor which controls a table storing a plurality of zigzag scan orders. CONSTITUTION: A syntax processor(170) outputs a run value and a level value by syntax-processing a bit stream. A zigzag table(190) stores a plurality of zigzag scan orders. A run-level processor(150) performs the run-level decoding by receiving the run value and the level value. The run-level processor stores the execution result according to the zigzag order corresponding to the codec of the bit stream among the zigzag scan orders. The syntax processor stores a new zigzag scan order in the zigzag table. The run-level processor is comprised of a hardwired logic. The syntax processor comprises a general microprocessor.