Patent ID: 6687830
Filing Date: 2004-02-03
Classification: G06F

Abstract:
An energy-saving control method for power-on identification, comprising the steps of:providing a sensing/scanning circuit for obtaining identification data; providing an output interface for receiving and storing the identification data from the sensing/scanning circuit, and providing a clock signal; providing a security control unit for receiving the identification data from the output interface to compare with pre-stored identification data and selectively send out a correct confirmation signal or an incorrect confirmation signal; providing a control interface for receiving the clock signal from the output interface to determine whether to supply power to the security control unit; providing a power supply which is triggered to supply power by receiving the correct confirmation signal from the security control unit; activating a switch to supply power to the output interface; supplying power to the sensing/scanning circuit for a time duration determined by a timer after the output interface is powered on; and supplying power to the security control unit when the timer reaches its count, and, when the security control unit has sent the confirmation signal, the output interface and security control unit are powered off immediately.