| 摘要 |
<p>The invention concerns a method for information transmission through modification of at least one part of an image signal in a video signal, directed towards at least one information processing system (2) through the intermediary of at least one scanner screen (1), and in which: at least one part of the image signal is modified to permit visualization, on at least one scanner screen (1), of at least one modified zone (3) containing the said information; a sensor device (4) is positioned opposite the modified zone in order to detect the information transmitted; the information detected is transmitted to the processing system (2). The modified zone (3) comprises a marker device facilitating precise positioning of the sensor device (4), thus enabling the size of the said modified zone (3) to be reduced.</p> |
