| 摘要 |
<p>PURPOSE:To improve the universal applicability by using properly a scan detecting means having the prescribed resolution and an analog detecting means having the high resolution. CONSTITUTION:A matrix switch sense device consists of an electronic controller 7 serving as a logical arithmetic circuit containing a CPU 1, a ROM 2, a RAM 3, an A/D converter 4, an external interface circuit 5, etc., a matrix switch 10 including drive lines x1-xn and sense lines y1-yn, the selective switch circuits 15-18, a power supply switch circuit 20, etc. The contacts are secured between those sense lines and drive lines with touches. These contact areas and the specific areas formed by the superposition between both lines are successively scanned by a scan detecting means. Then, the contact areas are detected by the analog signals detected from both lines forming the specific areas. Thus, it is possible to avoid such a case where the depression of >=2 points are mistaken for the depression of a single point.</p> |
