Patent ID: 8130843

Claim:
A moving picture stream generation apparatus which generates a moving picture stream including a random access unit made of pictures including an I-picture as a starting picture in decoding order, said moving picture stream generation apparatus comprising: a first coding unit configured to code first supplemental information included in the random access unit, the first supplemental information indicating pieces of picture type information of the pictures, and the pieces of picture type information being placed in order corresponding to the decoding order of the pictures; a second coding unit configured to code second supplemental information included in the random access unit, the second supplemental information indicating pieces of picture structure information of the pictures, and the pieces of picture structure information being placed in order corresponding to the decoding order of the pictures; a third coding unit configured to code sequential parameter set information which is used for decoding all of the pictures in the random access unit; and a generation unit configured to generate the moving picture stream by adding the coded first, second supplemental information and the sequential parameter set information to the I-picture, wherein picture types shown by the pieces of picture type information of the pictures include at least: an I-picture on which intra coding is performed; a P-picture on which inter coding is performed with reference to a picture per block; a B-picture on which inter coding is performed with reference to two pictures per block, and which can be referred to by an other picture; and a B-picture which cannot be referred to by an other picture, the block being a basic unit of coding, and the picture structure information of each picture includes one of: information indicating that the picture has a field structure; information indicating that the picture has a first frame structure for displaying the picture in form of two display fields; and information indicating that the picture has a second frame structure for displaying the picture in form of three display fields by repeatedly displaying a first display field at a time of using 3-2 pull down.