| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an encoder and decoder of compressed image data in which a real-time decoding process can be carried out. <P>SOLUTION: When a sign amount per frame of a mid code just before a variable-length encoding is A, a conversion amount into the intermediate code per frame by a piece of variable-length decoding means is K, and an upper-limit value of the sign amount per slice of the intermediate code, immediately prior to the variable length encoding, if N (N: an integer of two or larger) pieces of variable-length decoding means are parallel-operated in slice units is X, the upper limit value X of the sign amount per slice of the intermediate code is set by formula: X≤(N×K-A)/(N-1). <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
