| 摘要 |
<p>PROBLEM TO BE SOLVED: To cope with double-click operation of an input device by simple operations. SOLUTION: A main push-button switch on which a finger is constantly placed is replaced with the one in a double action type to be actuated at two stages by changes of pressure, a switch S1 to be turned ON at a first stage of the switch is used as an original main push-button switch and both switches on the second and first stages are turned ON when the push-button switch is strongly depressed when double-click input is necessary. A switch contact terminal at the first stage directly connected with a main push-button input terminal P2 of an encoder IC of a mouse circuit board originally, however a switching circuit constituted of sever electronic components is newly provided and connected with the terminal through the circuit. The new switching circuit instantaneously makes the switch circuit which is already at a conducted state into an open state for about 200 milliseconds and creates the same state as the double-click operations by signal current from the switch contact terminal at the second stage.</p> |
