| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problems of pseudo synchronization and out of synchronization caused by erroneous detection of a synchronization code, in an encoder. <P>SOLUTION: The encoder includes a multiplexer 111 for multiplexing a plurality kinds of variable length codes having code words obtained by compressing and coding an image signal and decodable in forward and backward directions, to generate a multiplexed code string 201; and an output encoder 200 for assembling the input string 201 into an output code string 205. The encoder 200 inserts a synchronization code into any one of a plurality of periodically predetermined synchronization code inserting positions in the code string 205 according to a synchronization code insertion request signal 203, and inserts information indicative of a boundary of the code string 201 into the code string 205. <P>COPYRIGHT: (C)2004,JPO |
