System, receiver, method, and program for distribution content

摘要

A system ( 100 ) for distributing a content ( 101 ) has a distributor ( 103 ) of the content ( 101 ) and a receiver ( 102 ) for receiving the content ( 101 ) from the distributor ( 103 ). The receiver ( 102 ) has a selector ( 104 ) for selecting a distributor ( 103 ) from a plurality of distributors, content-requesting means ( 105 ) for requesting the content ( 101 ) from the selected distributor ( 103 ), receiving means ( 106 ) for receiving the content ( 101 ), identity-determining means ( 107 ) for determining an identity ( 108 ) associated with the content ( 101 ), and a verifier ( 109 ) for verifying an availability of the content ( 101 ) at the distributor ( 103 ) on the basis of the determined identity ( 108 ). The distributor ( 103 ) of the content ( 101 ) has content request-receiving means ( 110 ) for receiving a request for the content ( 101 ), and a dispatcher ( 111 ) for dispatching the content ( 101 ). The distributor ( 103 ) is arranged to dispatch the content ( 101 ) to the receiver ( 102 ) in response to receiving a request for the content ( 101 ) from the receiver ( 102 ). The receiver ( 102 ) is arranged to only select the distributor ( 103 ) if the verifier ( 109 ) verified the availability of the content ( 101 ) at the distributor ( 103 ).