DIGITAL CONTENT CIRCULATION MANAGING CENTER, DIGITAL CONTENT USER TERMINAL, DIGITAL CONTENT CIRCULATION SYSTEM, DIGITAL CONTENT MANAGING METHOD, DIGITAL CONTENT USING METHOD, AND STORAGE MEDIUM

摘要

PROBLEM TO BE SOLVED: To protect a copyright by succeeding just copyright information on secondary use and distribution such as the compilation and change of a digital content in the digital content circulation. SOLUTION: Information is circulated in the system of a digital content package constituted of a digital content, access control information and copyright information. When the digital content is used, it can be used only through a package control means. Thus, copyright information can be succeeded even if the digital content is compiled.