COMMUNICATION SYSTEM, OUTPUT DEVICE, INFORMATION PROCESSOR, METHOD FOR CONTROLLING THE SAME, STORAGE MEDIUM WITH ITS PROGRAM STORED AND THE SAME PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a device, a system and a method for safely and inexpensively and easily performing data selling by preventing the illegal copy or illegal alteration of data such as photographs. SOLUTION: Data selected by a user side are directly transmitted from a provider side to an output device having a prescribed function. Thus, the data can be transmitted without going through the information processor of the user side, and the data can be prevented from being altered or illegally obtained. Also, charging information generated according to the output of the data is directly transmitted from the output device to the provider side. Thus, the charging information can be transmitted without going through the information processor of the user side, and the charging information can be prevented from being altered.