| 摘要 |
<p>PURPOSE:To attain the simultaneous write type plotting operations by attaining the input of a terminal write type plotting means which owns at least one token and then attaining the input of a terminal erasion type plotting means which owns all tokens. CONSTITUTION:When the communication is started, each terminal owns its own token and a pencil is selected as a plotting means. A pen input processing part of a plotting processing part 13 clears a plotting mode flag and waits for a state where a pen is put down on a tablet. When the pen is put down on the tablet, the plotting mode flag is set and the presence or absence of its own token is checked. If the presence of its own token is confirmed, a fact whether the selected plotting means is equal to an eraser or not. If so, a fact whether the partner token also exists or not. If so, the pen position is transmitted to the partner terminal like a case where the pencil is selected and the display of its own is changed. Then the pen position is repetitively transmitted to the partner terminal until the pen moves up from the tablet, and a pen locus is plotted.</p> |
