Patent ID: 8560831

Claim:
A data broadcasting system comprising: a user device that includes: a transmission requesting section that is connected to a network, and transmits, via the network, the user device's own model information and a request to transmit a content on the network, and a content reproduction section that receives an encrypted content which is the content requested by the transmission requesting section and key information which is used to decrypt the content, and decrypts the content to reproduce the key information, a broadcast receiving section that receives a broadcast from a broadcasting station, and a broadcast content display section that displays a content which is received from the broadcasting station and which includes primary link information indicating secondary link information indicating other content on the network, the transmission requesting section includes: a secondary link information requesting section that requests, in response to the primary link information in the content displayed by the broadcast content display section being designated by a user's operation, to transmit the secondary link information indicated by the designated primary link information, accompanied by the user device's own model information, via the network, a secondary link information receiving section that receives the secondary link information requested to transmit by the secondary link information requesting section, via the network, and a content requesting section that requests, in response to the secondary link information received by the secondary link information receiving section being designated by the user's operation, to transmit the content indicated by the designated secondary link information, via the network; and a data broadcasting server that includes: a qualification storage section that stores correspondence information in which model information and reproduction qualification information representing a content reproduction qualification a model included in the model information are associated with each other, a reproduction qualification determination section that refers to the correspondence information upon receipt of the request to transmit the model information and the content sent from the user device, obtains the reproduction qualification information according to the model information of the user device, and determines using a manufacturer ID and a model ID, whether the user device is qualified to reproduce the content requested to transmit from the user device, and a content transmission section that transmits, to the user device, the content determined by the reproduction qualification determination section that the user device is qualified to reproduce, and the key information used to reproduce the content.