Patent ID: 7487423

Claim:
A decoding method, comprising: receiving encoded data and encoding information including information for arithmetic decoding of the encoded data and synchronization information of at least one synchronization point set at a predetermined period within the received encoded data, the encoded data being decodable based upon the information for the arithmetic decoding of the encoded data; obtaining decoding information corresponding to the synchronization point, while decoding the encoded data using upon the information of the arithmetic decoding of the encoded data; comparing the received information of the synchronization point with the decoding information for detecting a transmission error; and continuing to decode the encoded data if the encoding information and decoding information for the one synchronization point match and continuing to decode the encoded data located beyond the corresponding synchronization point with reference to the encoding information if the encoding information and decoding information do not match by limiting a transmission error region to be between the corresponding synchronization point and a previous synchronization point.