| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To enable reproduction only when specified conditions are met when video software are distributed through digital broadcasting or a line. <P>SOLUTION: An information processor has a removable recording medium where a ciphered information signal is recorded, a means of connecting with a means of sending additional information through the line when the information signal is reproduced, a means of receiving reproduction condition information from the means of sending the additional information, and a means of deciphering the information signal on the basis of the reproduction condition information and reproducing the information signal. <P>COPYRIGHT: (C)2003,JPO</p> |
