| 摘要 |
PURPOSE: A supplementary device for tracking a location is provided to easily search a mobile phone, when a user lost the mobile phone. CONSTITUTION: A supplementary device for tracking a location in a mobile phone comprises a supplementary battery, a tracking signal receiver, power supply malfunction detector, a first switch, a second switch, a voice processor, and a controller. The supplementary battery is buit in the mobile phone. The tracking signal receiver generates a warning signal when the tracking signal is received. The first switch is connected between a main battery and the tracking signal receiver, and provides the power supply to the tracking signal receiver. The second switch is on by the warning signal. The voice processor is connected to an emergent power supply provider, and is operated when the emergent power supply is provided. The controller outputs a warning signal. |
