Patent ID: 8254447

Claim:
A moving picture stream generation apparatus which generates a stream including pictures which constitute a moving picture, said moving picture stream generation apparatus comprising: a coding unit operable to code supplemental information included in a random access unit, the random access unit including a group of pictures which belong to the pictures starting with a first I picture which is a first random access point and ending with a picture located immediately-before a second I picture which is a second random access point, the supplemental information includes picture type information, picture sequence information and pieces of picture structure information of the group of pictures, and the pieces of picture structure information being placed in an order that corresponds to a decoding order of the group of pictures; and a generation unit operable to generate a moving picture stream by adding the coded supplemental information to a coded picture corresponding to the first I picture, wherein the picture structure information of each of the group of pictures includes one of: information indicating that the picture has a field structure; and information indicating that the picture has a frame structure, wherein the picture type information of the respective pictures includes 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 which is a basic unit in coding; a first B-picture on which inter-coding is performed with reference to two pictures per block which is a basic unit in coding, and which can be referred to by a picture; and a second B-picture on which inter-coding is performed with reference to two pictures per block which is a basic unit in coding, and which cannot be referred to by any other pictures, wherein the picture structure information of the respective pictures includes information indicating whether the picture structure of each picture is a field structure, a first frame structure, or a second frame structure, wherein the field structure is for alternatively displaying a top field and a bottom field, wherein the first frame structure is for displaying the picture using two display fields, wherein the second frame structure is for displaying the picture using three display fields by repeatedly displaying the first display field at the time of using 3-2 pull down, and wherein the supplemental information is used at the time of trick-play or jump-in playback.