| 摘要 |
<p>A keypad arrangement is disclosed comprising a scanning unit (30) having a certain number of port line terminals (1 to 11) and a number of sensor cells (21) arranged in half-matrix structure having rows (23) and columns (22) whereby the number of columns (22) and the number of rows (23) each are less than the number of port line terminals. In comparison to normal detection systems, the given detection system allows a significant reduction of the port line terminals required to scan a given number of sensor cells. The device described is preferably applicable in communication devices.</p> |
