| 摘要 |
A method for protecting private content stored in a portable memory device are provided, wherein the portable memory device comprises a micro-controller unit, a USB connector, a memory array, a decoder, a storage for storing various application programs, and a backup power supply, characterized in that the method comprises steps of generating a protection signal in response to an initiating action and transmitting the signal to the micro-controller unit; recoverably deleting original file systems from the memory array USB the micro-controller unit in response to the received protection signal, and storing the original file system into the storage as a backup for the recovery purpose. Advantageously, the original file system can be recovered in response to a correct password input, or else can be permanently deleted in response to an incorrect password input, when the portable memory device is in connection with a personal computer
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