Patent ID: 8111019

Claim:
A sensing type control circuit for an electronic apparatus, comprising: an output unit coupled between an external power source and the electronic apparatus, providing varied power supply to the electronic apparatus according to a control signal; a switch coupled between the external power source and the output unit, disconnecting or connecting the external power source; a control unit, receiving a sensing signal and generating the control signal to the output unit according to the received signal, wherein the control unit comprises: a buffering unit for buffering the received signal until a specific time period has been reached and transmitting the control signal to the output unit when the specific time period has been reached, wherein the buffering unit comprises: a micro-current source providing a stable micro-current; two switches connected in series, wherein one end of the switches connected in series is coupled to the micro-current source and another end is coupled to a ground terminal; and a capacitor, wherein the control unit controls the switches to charge the capacitor according to the received signal, and the specific time period is a time that the micro-current source has finished charging the capacitor; and a sensing unit, comprising a sensing device, sensing an external variation, wherein the sensing unit generates the sensing signal to the control unit when the sensing device senses an excitation.