Patent ID: 7290047
Filing Date: 2007-10-30
Classification: G06F,H04L

Abstract:
1. A license information exchange system for exchanging license information indicating details of a right between a server device and a client device via a communication network the license information exchange system comprising: a first device which is the server device; and a second device which is the client device, wherein the first device includes: wherein the second device includes: wherein the second data storing unit has client unique information for identifying the second device held therein, wherein the request information generating unit is operable to generate the request information concerning the license information, and send the client unique information and the request information to the first device through the second communication unit, wherein the first device is operable to generate the communication unique information through the communication unique information generating unit, when receiving the client unique information and the request information through the first communication unit, hold the client unique information, the communication unique information and the request information as a set in the first data storing unit, and further send the communication unique information to the second device through the first communication unit, wherein the second device is operable to hold the communication unique information in the second data storing unit, when receiving the communication unique information through the second communication unit, and send at least the communication unique information to the first device, wherein the first device further includes a license information generating unit operable to generate the license information according to the request information, and wherein the first device is operable to search for the request information held in the first data storing unit based on the communication unique information, when receiving the communication unique information through the first communication unit, have the license information generating unit generate sending license information sent to the second device based on the searched request information, holds at least the sending license information and the communication unique information as a set in the first data storing unit, and send the sending license information to the second device through the second communication unit after deleting the request information.