| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve a technology for reproducing broadcast program content in an environment where broadcast program content is viewed by using a computer in such a state that a tuner is connected to the computer so as to be attached/detached. <P>SOLUTION: In a PC30, a tuner unique key is captured from a tuner 20, and a PC unique key is acquired, and a key (combination unique key) which is unique to the combination of the tuner and the PC is generated from the tuner unique key and the PC unique key. Then, in the PC 30, the combination unique key is output to a tuner encryption part 48 in response to a real time reproduction command from a user, and encrypted digital data output from the encryption part are input to a PC in response to this output, and an encryption releasing part 76 is made to try the encryption release of the encrypted digital data by using the combination unique key. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
