ELECTRONIC DEVICE CAPABLE OF AUTOMATICALLY RESETTING AND AUTOMATIC RESETTING METHOD THEREOF

摘要

The present invention is to provide an electronic device capable of automatically resetting, which includes a main circuit system and an external circuit system. The main circuit system is able to send out a power supply state signal according to the voltage thereof and an activation state signal according to whether the main circuit system is properly activated. The external circuit system is able to receive the power supply state signal and the activation state signal, switch a switch between a turned-on state and a turned-off state for automatically cutting off electricity supplied to the main circuit system through the switch while the main circuit system is improperly activated and then supplying electricity to the main circuit system thereafter. Thus, whenever the electronic device is improperly activated, the electricity supplied to the main circuit system can be automatically cut off and then restored to reset the main circuit system automatically.

主权项

1. A method for automatically resetting an electronic device, the method being applicable to an electronic device comprising a main circuit system and an external circuit system, the main circuit system comprising a motherboard provided thereon at least with a first power receiving unit, a first control unit, and at least one peripheral unit, the first power receiving unit being electrically connected to a power supply unit through a switch, wherein when the switch is in a turned-on state, the first power receiving unit receives electricity from the power supply unit, supplies the electricity to the motherboard, the first control unit, and the peripheral unit, and sends out a power supply state signal according to voltage of the first control unit or of the peripheral unit, the first control unit being configured for driving the peripheral unit to perform functions thereof; the external circuit system comprising a second control unit and a timing unit, the second control unit being electrically connected to the first control unit, the motherboard, and the switch in order to receive signals sent by the first control unit and the first power receiving unit and switch the switch between the turned-on state and a turned-off state, the timing unit being electrically connected to the second control unit, the method comprising the steps, to be performed by the second control unit, of:
receiving the electricity from the power supply unit, and then driving the timing unit to time; receiving an activation state signal from the first control unit after a first predetermined time elapses; sending a turn off signal to the switch to switch the switch to the turned-off state, if the activation state signal is not received or if the activation state signal indicates improper activation of the main circuit system; receiving the power supply state signal from the first power receiving unit to confirm that the main circuit system is in a powered-off state; driving the timing unit to time; sending a turn on signal to the switch to switch the switch to the turned-on state, after a second predetermined time elapses; receiving the power supply state signal from the first power receiving unit to confirm that the main circuit system is properly supplied with power; driving again the timing unit to time, and after the first predetermined time elapses, receiving a second activation state signal from the first control unit; and terminating execution of the method when the activation state signal or the second activation state signal indicates proper activation of the main circuit system.