| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide the portable telephone set where a malfunction prevention mode is more surely released automatically. SOLUTION: When depression of an operation key is discriminated in the step 110, whether or not a malfunction prevention mode is set is discriminated in the step 120. When no malfunction prevention mode is set, the processing corresponding to the operation key is conducted. On the other hand, when the malfunction prevention mode is set, whether or not a touch sensor is valid is discriminated in the step 130, and whether or not a human body is in contact in the succeeding step 140 is discriminated. When a contact of the human body is discriminated, the processing corresponding to the depressed key is conducted. Since the touch sensor discriminates the presence of the contact of human body only when the operation key is depressed, then the presence of the contact is surely discriminated without concentration of the processing on other control and then the malfunction prevention function is tentatively released.</p> |
