| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a variable length coding method capable of constituting a variable length code which can be decoded forwards and backwards, reduces useless bit patterns and improves coding efficiency. <P>SOLUTION: A code word table is configured for storing a plurality of code which can be decoded forward and backward and in which the code of the level of a DCT coefficient after quantization is added to the final bit in correspondence with the last DCT coefficient after quantization and the various combination of runs and levels, and a code word inputted from the code word table corresponding to the last DCT coefficient after quantization and the combination of runs and levels is selected and outputted as coded data. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
