| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an electronic blackboard device which stores image data written additionally into data and voice data obtained during a session in relation to time. SOLUTION: Display data shown in a display means 11 is stored in display memory 10 at a point of time when handwritten data is not entered from a touch panel 12 for a specified time, and at the same time, an identification code is added to voice data to be entered into voice memory 9 by controlling a coding means 5. Further, the display data shown in the display means 11 is entirely stored in display memory 10 at the time of a storage operation for the display data during the beginning a of a session, and only difference data between the previously stored display data and display data available at a point of time when the display data is stored anew, is to be stored in the display memory 10 when the second and following storage operations for the display data are performed.</p> |
