| 摘要 |
An apparatus, system, and method that initialize a oapacitive sensing switch and detects a pushed button are described. The apparatus comprises a keypad, a logic component, an initialization threshold, a measured capacitive value, and a processor. The Keypad is disposed on the wireless device and comprises at least one capacitive sensing switch. The logic component is configured to determine a capacitive sensing range for each capacitive sensing switch, wherein the capacitive sensing range corresponds to the difference between the maximum capacitance and the minimum capacitance. The initialization threshold is associated with the capacitive sensing range and each capacitive sensing switch is initialized when the capacitive sensing range exceeds the initialization threshold. The measured capacitive value measures the capacitive value for each capacitive sensing switch and a corresponding push-button threshold determines whether the button has been pushed. The processor is configured to process computer instructions that correspond to each capacitive sensing switch when the capacitive sensing range exceeds the initialization threshold and when the measured capacitive value for each capacitive sensing switch exceeds the push-button threshold. |
