Patent ID: 8476791
Filing Date: 2013-07-02
Classification: F25D,H02J,Y02B,Y04S

Abstract:
1. A method for reducing power consumed in an electronic product operating for a long time, the method comprising: measuring, by a sensor unit, a state associated with an operation of a load of the electronic product and outputting measured data; determining, by a controller, whether a predetermined control condition is satisfied for a predetermined duration by using the output measured data; if the predetermined control condition is satisfied for the predetermined duration, stopping, by the controller, the operation of the load and turning off a power switching unit to cut off the external power to the load while the electronic product is in a normal operation; and if the predetermined control condition is not satisfied, turning on, by the controller, the power switching unit to supply the external power and driving the load again, wherein the determining comprises: if the predetermined control condition is satisfied, calculating a discharge time of a power switching power unit and a sleep-mode power unit and comparing the calculated discharge time with a natural discharge time of the power switching power unit and the sleep-mode power unit; and wherein if the calculated discharge time is greater than or equal to the natural discharge time, the electronic product operates in a power supply mode, and wherein if the calculated discharge time is less than the natural discharge time, the electronic product operates in a power cut-off mode.