Patent ID: 8639751
Filing Date: 2014-01-28
Classification: G06F,H04L

Abstract:
1. A rights information transmission system comprising a server device and a client device, said rights information transmission system being for transmitting rights information indicating usage rights of a content, from said server device to said client device, via a communication network, wherein said server device includes: wherein said client device includes: wherein said client device stores the generated communication identification information in said second data storing unit, and transmits the communication identification information to said server device using said second communication unit, wherein said server device stores, in said first data storing unit, the communication identification information received by said receiving unit, and transmits a response message to said client device using said first communication unit, the response message indicating that the communication identification information has been received, wherein, when said second communication unit receives the response message, said client device generates the request information using said request information generating unit, and transmits a rights information request message to said server device using said second communication unit, the rights information request message including at least the request information and the communication identification information, wherein, when said first communication unit receives the rights information request message, said server device (i) generates, using said rights information generating unit, the rights information for transmission in response to the request information, (ii) updates the rights information managed by said server device, (iii) stores the communication identification information and the rights information for transmission in said first data storing unit, and (iv) transmits a response message including the rights information for transmission to said client device, using said first communication device, wherein, when said second communication unit receives the response message, said client device stores the rights information for transmission in said second data storing unit, and transmits, to said server device, a completion message indicating completion of storing the rights information for transmission, and wherein the communication identification information is: