Patent ID: 8689030

Claim:
An electronic apparatus comprising: a display; a display controller that displays an image on the display in accordance with an image signal input; a first power supply unit that coverts an alternating-current power into a first power having a first voltage, and supplies the first power to the display; a shutoff unit that shuts off the alternating-current power being supplied to the first power supply unit, based on the image signal; and a second power supply unit that converts the alternating-current power into a second power having a second voltage and supplies the second power to the display controller and the shutoff unit, wherein the shutoff unit includes a relay circuit and a relay circuit controller, and when the relay circuit controller transmits a set signal to the relay circuit, the relay circuit supplies the alternating-current power to the first power supply unit, and when the relay circuit controller transmits a reset signal to the relay circuit, the relay circuit shuts off the alternating-current power being supplied to the first power supply unit, and wherein the relay circuit controller monitors an output of the first power supply unit, and when the first power is not output from the first power supply unit though the set signal has been transmitted to the relay circuit, the relay circuit controller transmits the set signal to the relay circuit, and when the first power is output from the first power supply unit though the reset signal has been transmitted to the relay circuit, the relay circuit controller transmits the reset signal to the relay circuit.