Patent ID: 7792415
Filing Date: 2010-09-07
Classification: H04N

Abstract:
1. A picture coding apparatus which (i) codes pictures, on a picture-by-picture basis, each picture including at least a pixel data storage unit for storing pixel data and a supplemental information storage unit, for storing supplemental information, being located ahead of the pixel data storage unit, and (ii) generates a random access unit, as a part of a stream, including the coded pictures, the picture coding apparatus comprising: a coding unit configured to generate a piece of coded pixel data by coding a piece of pixel data of each of the pictures; a first information generation unit configured to generate sequence parameter set information which is a parameter group to be commonly referenced for decoding pieces of coded pixel data included in the random access unit, and to code the generated sequence parameter set information; a second information generation unit configured to generate, for each piece of coded pixel data, a piece of picture parameter set information which is a parameter group to be referenced for decoding each piece of the coded pixel data, and to code the generated piece of picture parameter set information; a first storage unit configured to store the piece of the coded pixel data in each of the pixel data storage units; a second storage unit configured to store the coded sequence parameter set information in a supplemental information storage unit of a coded picture which is located at a head of the random access unit; and a third storage unit configured to store a predetermined number of coded pieces of picture parameter set information in the supplemental information storage unit of the coded picture which is located at a head of the random access unit, wherein the third storage unit is configured to store the coded piece of picture parameter set information in a supplemental information storage unit of a coded picture which refers to the coded piece of picture parameter set information, the coded piece of picture parameter set information being different from the predetermined number of the coded pieces of picture parameter set information stored by the third storage unit.