| 摘要 |
<p>An input device for handwritten characters and patterns comprising: a light source (2) and an optical fiber (3), both being provided facing the tip of a light pen (4), a trace reader circuit (5) which receives optical signals from the optical fiber through a photo-sensitive element and supplies electrical signals indicating the direction of the trace, and a micro-computer (14) which receives direction data signals from the trace reader circuit, status signals, and condition signals from a condition key switch (25) and processes these signals in accordance with a programmed pattern recognition algorithm so as to form pattern recognition data. This device optically detects information indicative of characters and patterns while they are being written, and converts this information into electric signals so that it can be input into a computer via an on-line system. </p> |
