| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To extremely reduce such a malfunction that an input operation is resultantly received regardless of the fact that a user is not in operation depending on a use environment. <P>SOLUTION: An optical sensor 9 is arranged directly under an operation switch 2 arranged at a front face on a glass plate 1 which is an electric insulating material while determining the presence or absence a finger 4 of the user by the optical sensor, and when both a signal of the operation switch 2 and a signal of the optical sensor 9 reach a control part 7, the malfunction of the operation switch is reduced even in any environment by determining that the operation is effective by the control part 7. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
