| 摘要 |
The present invention relates to a transmission apparatus and method, a reception apparatus and method, and a transmission and reception system by which content which meets the needs at the time can be acquired. A server 11 generates a PDI-Q representative of a question about the tastes of a user of a client 12, and transmits the PDI-Q and a provider side PDI-BA representative of an answer set by a provider providing content to the question about the tastes of the user and represented in a bitmap index to the client 12. The client 12 generates, in response to the PDI-Q transmitted thereto from the server 11, a user side PDI-BA representative of an answer of the user to the question and represented in a bitmap index. Then, the client 12 carries out matching between the user side PDI-BA and the provider side PDI-BA transmitted from the server 11 with each other to determine acquisition of content distributed from the server 11. The present invention can be applied to a broadcasting system which broadcasts a digital television program. |
