| 摘要 |
PURPOSE:To display input information on this side and an opposite side in real time, to easily erase part of information which is inputted yet, and to temporarily display a pointer mark at the indication point of a pen without storing the point. CONSTITUTION:When a character or figure is drawn on a tablet 1 with the stylus pen 1a, a coordinate read circuit 7 detects the XY coordinate position of the pen from the sensor information of the pen and inputs the data to a microcomputer 8. The microcomputer 8 writes the position data in a screen memory 9 and also sends them out to a telephone line 12 through a transmission control part 10 and a modem 11. Position data of screen memories 9 on this side and opposite side are displayed at display parts 2 in real time through respective display circuits 13. The tablet 1 is provided with mode keys for writing, erasure, and indication and a top of one of the keys is touched with the pen to input a subsequent operation mode to the microcomputer, so that corresponding operation is performed. Functions of telephone and FAX can be added. |
