In the case of modifying available copy count information which is contained in distribution data, the distribution data being distributed from a distribution server and stored in a PC which serves as a receiving device, the PC sends a reuse request to the distribution server. Thereafter, the PC receives...http://www.google.com/patents/US20020036800?utm_source=gb-gplus-sharePatent US20020036800 - Information distribution system, information distribution device, information receiving device, information distribution method, information distribution program, recording medium recording the information distribution program, information receiving method, information receiving program, and recording medium recording the information receiving program
