Patent ID: 8279093
Filing Date: 2012-10-02
Classification: G06F,Y02D

Abstract:
1. An apparatus for detecting whether an electrical connector of a peripheral device is connected to an electrical connection port, the apparatus comprising: a controller, including a signal output pin for initiating a detection signal and a signal feedback pin; a voltage dropping resistor and a detection capacitor, in which one end of the detection capacitor is electrically coupled to the voltage dropping resistor, and the voltage dropping resistor is electrically coupled to the signal output pin of the controller; a feedback wire, having one end electrically coupled to a conjunction node of the voltage dropping resistor and the detection capacitor and the other end electrically coupled to the signal feedback pin of the controller; and a detection pin, disposed in the electrical connection port and electrically coupled to the other end of the detection capacitor; wherein the apparatus is arranged such that when the detection pin is not electrically coupled to the electrical connector, the detection signal passes through the voltage dropping resistor to form a first feedback signal fed back to the signal feedback pin of the controller, and when the detection pin is electrically coupled to the electrical connector, the detection capacitor is charged and discharged to form a second feedback signal fed back to the signal feedback pin of the controller.