Patent ID: 8774283

Claim:
An information processing apparatus that encodes image data, comprising: comparison means for comparing frames or fields constituting image data in increments of a line block including image data equivalent to a number of lines needed to generate coefficient data equivalent to one line of sub-bands of at least lowest frequency components, and the comparison means compares, with respect to the image data, a difference value between frames or a difference value between fields with a threshold; generation means for generating concealment information indicating a method of concealing an error in a line block in accordance with a comparison result received from the comparison means, the concealment information includes flag information indicating whether or not a line block constituting a frame or a field is replaceable with a line block constituting another frame or another field; encoding means for generating encoded data by encoding, using an entropy coding system, coefficient data reordered in advance in the order in which the coefficient data is used in executing a combining process of combining coefficient data of a plurality of sub-bands decomposed in frequency bands to generate image data; control means for controlling so as to multiplex, after the encoded data is generated, the concealment information with the encoded data.