Patent ID: 6975947

Claim:
A power saving apparatus in an appliance, comprising: a DC power supply output unit that outputs a DC voltage of a predetermined level by converting an AC power supply or a battery voltage; a main DC/DC converter that supplied a plurality of operating voltages to a corresponding plurality of devices by converting the DC voltage or the battery voltage; a micro-controller that receives user entered power management data; a plurality of power switches controlled by the micro-controller that selectively disconnect each of the plurality of devices to carry out a power saving function; a CPU DC/DC converter that supplies a CPU voltage to a CPU by converting the DC voltage or the battery voltage outputted from the DC power supply output unit; and an LCD inverter that supplies a LCD with a driving voltage by converting the DC voltage or the battery voltage, wherein the CPU voltage and the driving voltage are each adjusted according to a user's selections in order to carry out the power saving function.