| 摘要 |
<p>PURPOSE:To obtain a writing input information protecting method prevented from unclear lines or malfunction even if noises are applied to input information by comparing the coordinate information of writing information and command information twice. CONSTITUTION:Whether a point inputted to an area decision part 10 is a writing area or a command area is discriminated, and in case of the writing area, the coordinate values x, y are outputted to the 1st writing register 11. In case of the command area, the coordinate values x, y are outputted to a command discrimination part 16. The 1st writing register 11 stores the coordinate values x1, y1 of the current input point. In case of continuous inputs, the 2nd writing register 12 stores the coordinate values x2, y2 of the precedent input point and outputs the values x2, y2 to the 1st gate 15. A differential unit 13 finds out the difference DELTAx, DELTAy (DELTAx=¦x1-x2¦ and DELTAy=¦y1-y2¦) between the values x1, y1 stored in the 1st register 11 and the values x2, y2 stored in the 2nd register 12 and outputs the difference to the 1st comparator 14.</p> |
