Patent ID: 8058912
Filing Date: 2011-11-15
Classification: H03K

Abstract:
1. An electronic device, comprising: a signal generator for generating reset signals when the electronic device is powered on and when the electronic device is powered off; and a processing module resetting in response to the reset signals; the signal generator comprising: wherein one terminal of the first capacitor is connected to the input terminal, the other terminal of the first capacitor is grounded, one terminal of the second capacitor is connected to the output terminal, the other terminal of the second capacitor is grounded, the reset signals are generated during the charging and discharging process of the second capacitor; the switching unit comprises: a first switch component configured to turn on when the electronic device is powered on, and turn off after the electronic device is powered off; a second switch component configured to keep an off-state to cause the second capacitor to be charged by the input voltage when the first switch component turns on, and configured to turn on to ground the second capacitor when the first switch component turns off; a first resistor; a second resistor; a third resistor; and a fourth resistor; a terminal of each of the first resistor, the second resistor, and the fourth resistor is connected to the input terminal; the other terminal of the second resistor is grounded via the third resistor; the other terminal of the fourth resistor is connected to a second terminal of the first switch component and a first terminal of the second switch component; the other terminal of the first resistor is connected to a second terminal of the second switch component, the second terminal of the second switch component is connected to the output terminal, a first terminal of the first switch component is connected to a connected node between the second and third resistors; a third terminal of the first switch component is grounded, and a third terminal of the second switch component is grounded.