Patent ID: 8036388

Claim:
An information receiving system for receiving by first and second information receiving devices content data distributed from an information sending device, wherein: said first information receiving device having usage right of said content data comprises: at least one first memory to store data and instructions; and at least one first processor configured to access the at least one first memory and, when executing the instructions, to: send first registration information of said first information receiving device to said second information receiving device, receive second registration information of said second information receiving device, wherein the first registration information is different than the second registration information, and determine, based on the second registration information, whether or not said content data for said second information receiving device can be used; and said second information receiving device comprises: at least one second memory to store data and instructions; and at least one second processor configured to access the at least one memory and, when executing the instructions, to: receive said first registration information of said first information receiving device, and determine, based on said second registration information, whether or not said content data for said first information receiving device can be used, and wherein said first and second information receiving devices mutually determine whether or not said content data can be used, and said usage right is sent and passed from the first information receiving device to the second information receiving device if said first and second information receiving devices both determine that said content data can be used.