Patent ID: 8319651
Filing Date: 2012-11-27
Classification: H02J

Abstract:
1. An electronic device, comprising: a power port configured for connecting to an external power source; a processing unit; an LED module comprising an anode and a cathode; a hardware indication unit connected to the power port; a first control switch electrically connected with the power port, the anode of the LED module, and the hardware indication unit; a software indication unit connected to the processing unit; a second control switch electrically connected with the cathode of the LED module, the software indication unit, and ground; a switching circuit connected between the first control switch and the anode of the LED module; wherein, when the electronic device is powered off and the power port connects the external power source to recharge a rechargeable battery of the electronic device, the cathode of the LED module is grounded, the hardware indication unit directs the first control switch to turn on and off alternatingly, the connection between the anode of the LED module and the power port is established and disconnected alternatingly, and the LED module flashes; when the electronic device is powered on and the power port connects the external power source to recharge the rechargeable battery, the switching circuit disconnects the connection between the first control switch and the anode of the LED module and connects the anode of the LED module to a high voltage point, the software indication unit directs the second control switch to turn on and off alternatingly, and the connection between the cathode of the LED module and the ground is established and disconnected alternatingly, thereby the LED module flashes.