| 摘要 |
<p>PROBLEM TO BE SOLVED: To add identification information being not easily removable even if a high digital technique is used to dynamic image data by writing identification information to a picture frame having a prescribed picture frame interval in a plurality of picture frames. SOLUTION: Each picture frame of dynamic image data (a) comprising a plurality of successive picture frames entered from an input terminal 1 is read by a picture reading part 8 and outputted to an output terminal 9 after temporary written in a picture storage memory 2. An identification number is written in the specified position of the frame for every 30 picture frame at a timing that this each picture frame is temporarily written in the picture storage memory 2. As a result, the picture frame in which the identification number is written is mixed for every 30 picture frame in the plurality of picture frames sequentially outputted from the output terminal 9. This identification number instantly appears for 0.03 seconds is not recognized by people only by paying a general attention.</p> |
