Patent ID: 8117128

Claim:
A content usage management system for performing transaction processing of a content which is usable by a user device, said content usage management system comprising: a user device which comprise an information processing apparatus; a clearing center information processing apparatus that manages payment of a content usage fee using electronic credits, said clearing center comprising at least one information processing apparatus; an issue log sent from the clearing center information processing apparatus to the user device; a usage log containing information about the issue log sent from the user device to a service provider, said service provider comprising at least one information processing apparatus; and a receive log created by the service provider information processing apparatus after receipt of the usage log from the user device, wherein, the issue log contains an effective payment period for the content usage fee, the clearing center information processing apparatus allows said user device to pay the content usage fee within the effective payment period by way of the user device sending the usage log to the service provider which in turn sends the receive log to the clearing center information processing apparatus to initiate an electronic money transfer between a user account and a service provider account, said issue log expires after the effective payment period elapses, said clearing center information processing apparatus comprises user management data in which at least one user device identifier is associated with information relating to the effective payment period, said clearing center information processing apparatus searches said user management data for user devices having issue logs that expire within a predetermined time period, and said clearing center information processing apparatus sends a warning message to user devices with issue logs expiring within the predetermined time period.