Patent ID: 6885704
Filing Date: 2005-04-26
Classification: H04N

Abstract:
1. A coding apparatus of a time-varying image signal, the coding apparatus comprising: an intra-coding section that intra-codes information within a plurality of blocks that are formed by division of a picture within the time-varying image signal; and a coding controlling section that controls the intra-coding so that N>1 pictures of the time-varying image signal are successively intra-coded by the intra-coding section from the beginning of a communication, wherein: the picture quality of each intra-coded picture is represented by the corresponding intra-coded information, and the coding controlling section encodes the N pictures such that the picture qualities of (N−1) pictures, from the beginning of the communication, are more coarse than the picture quality of the Nth picture, from the beginning of the communication.