Patent ID: 6986031

Claim:
A device for processing a control action from a user in an electronic apparatus, comprising: a controller for outputting a voltage signal having a voltage deviation when the user performs the control action to the electronic apparatus; and a detection circuit for receiving the voltage signal and outputting an interrupt signal when the voltage deviation occurs to inform the electronic apparatus of the control action and an uninterrupted signal when the voltage deviation does not occur, the detection circuit comprising: a comparator having an inverse terminal, a non-inverse terminal, and an output terminal; a diode connected to the inverse terminal and the non-inverse terminal, so that a forward bias voltage can be established between the inverse terminal and the non-inverse terminal; and a capacitor connected to the inverse terminal and the ground, wherein when a reverse bias voltage applies to the diode after the voltage deviation occurs, the capacitor starts to release its charges until a forward bias voltage is established again between the inverse terminal and the non-inverse terminal.