| 摘要 |
A URI converting portion 302 converts a URI contained in data received by a receiving portion 301 into a fixed length URI. The fixed length URI is stored to a reception information storing portion 303 along with the data received by the receiving portion 301. On the other hand, a URI of desired contents data that is input from a URI input portion 307 is converted into a fixed length URI by a URI converting portion 305. A URI comparing portion 306 compares the fixed length URI stored in the reception information storing portion 303 with an output of the URI converting portion 305. When a match is detected as the compared result, the indefinite length URIs corresponding to the fixed length URIs (namely, the URI contained in the received data and the URI that is input from the URI input portion 307) are compared. When a match is detected as the compared result, it is determined that the contents data to which the indefinite length URI is added is that contents data that the user desires. <IMAGE> |
