| 摘要 |
PROBLEM TO BE SOLVED: To provide means for more intuitively performing the management of information to be written by a user on an interactive whiteboard than a conventional manner.SOLUTION: When a user performs a writing operation by using a device 12 on a screen 10 to which a background image is projected, LED rays of light with which the screen 10 is irradiated from the device 12 are imaged, and the position is specified by image analysis so that orbit data showing written characters or graphics can be generated, and that an orbit image shown in the orbit data can be displayed on the screen 10. An authority such as the possibility of preservation, printing or deletion or the presence/absence of encryption is preliminarily given to the device 12, and the configurations of the processing of the orbit data to be generated by writing using the device 12 are determined in accordance with the authority. Therefore, it is possible for the user to intuitively instruct the possibility of preservation, printing or deletion or the presence/absence of encryption of characters or graphics to be written by selecting the device 12 to be used for writing. |
