| 摘要 |
<p>PURPOSE:To make the entire processing efficient by not scanning a coefficient data at the coding and not reproducing the data at the decoding side but terminating processing when a consecutive zero coefficient data at the end of zigzag scanning is in existence in a block to be coded or decoded. CONSTITUTION:For example, a coder 22 generates a Huffman code data from a data from a buffer 7 by using combination between a run length value of consecutive zero data and its succeeding non-zero data and outputs the result as a coding data 23. Then a count 18 of a counter 14 and a count 16 of a count register 6 are compared, when they are coincident, a count coincidence signal 17 is informed to the coder 22. Thus, in the code processing after one- dimensional array conversion, when the final data in a block is zero, the coding processing is attained without scanning the data. Thus, the processing efficiency of final consecutive zero data in zigzag scanning in a block is improved.</p> |
