Patent ID: 8285899

Claim:
A smart SD card, including: SD interface, for providing an access interface for peripheral devices in the manner of file system, wherein a smart card interface file is set in the file system; SD storage unit, for providing a storage space; smart card, for providing application service; and SD controller, for identifying an operation to the file system from the peripheral devices, and accessing to the smart card if the operation directing to the smart card interface file, otherwise, accessing to the SD storage unit; wherein the SD controller interprets a writing operation to the smart card interface file from the peripheral device as sending command to the smart card, and interprets a reading operation as receiving response data returned by the smart card, and wherein the smart card returns a command response information to the SD controller, and then the SD controller identifies the command response information, if the SD controller identifies that there is data returned, the SD controller automatically sends an obtaining command to obtain the response data such that the peripheral device reads and obtains the response data after the SD controller have received all of the response data.