Patent ID: 7036742

Claim:
A method to safely read from and write to a memory card in a memory card reader device, wherein power is safely provided to the said memory card reader device and the said memory card, wherein the said memory card reader device can safely read data from or write data to the said memory card, which comprises the steps of: providing a first switch, a second switch, a join mechanism and an ejecting button, wherein, the said first switch is coupled to the said second switch, another switch is coupled to the ground while the said first switch or the said second switch is coupled to a power, and the said ejecting button further comprises an elasticity element; inserting the said memory card into a slot of the said memory card reader device, meanwhile, the said memory card compresses the said join mechanism, which thereby makes the said second switch turn into an on state, and then makes the said first switch and the said second switch turn into a close loop state, thus the said power passes to the said memory card reader device so that the said memory card reader device can read data from or write data to the said memory card; and pressing the said ejecting button, meanwhile, the said ejecting button compresses the said elasticity element, which thereby makes the said first switch turn into an off state, and makes the said memory card eject from the said memory card reader device when it compresses the said join mechanism, and forces the said first switch and the said second switch to turn into an off state, and then makes the said power and the said memory card turn into an open loop state so as to eject the said memory card, while a user does not have to continually compress the said ejecting button, the said elasticity element will force the said ejecting button back to its original position, which makes the said first switch turn into the said close state and the said second switch turn into the said open state.