A content billing method for performing billing processing corresponding to use of digital content. After the operation is started, search management processing is performed. In the search management processing, information on whether or not a search period expires is managed. When the search period...http://www.google.es/patents/US7328178?utm_source=gb-gplus-sharePatente US7328178 - Content billing method, and content billing system and content billing apparatus using the content billing method
Content billing method, and content billing system and content billing ...
