| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent reproduced data such as released cryptograph flowing through a network, etc. from being restored as normal digital data even when a malicious user acquires the reproduced data. <P>SOLUTION: The data transmitting device comprises: an error correction code generating means 13 for generating an error correction code to reproduced data to be transmitted to display devices 201 to 204; a data deteriorating means 15 for deteriorating the reproduced data by changing the reproduced data with the error correction code within a restorable range; and a transmitting means 16 that can transmit the error correction code generated by the error correction code generating means 13 and the reproduced data deteriorated by the data deteriorating means 15 to the display devices 201 to 204. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
