METHOD FOR BURYING ELECTRONIC WATERMARK INFORMATION AND METHOD FOR ANALYZING THE BURYING POSSIBILITY OF THE ELECTRONIC WATERMARK INFORMATION

摘要

PURPOSE: To decrease a load to be applied to digital watermarking information embedding. CONSTITUTION: An auxiliary process (preparation of an embedding strength map) to be carried out by an auxiliary process 13 and a main process (embedding of watermarking information) to be carried out by a main process part 14 are mutually made independent. More specifically, the auxiliary processes to be carried out by the auxiliary process pad 13 are executed whenever contents data may newly be stored in a contents database 151, and the main processes to be carried out by the main process 14 are executed whenever a delivery request for contents is received from a reception terminal 2.