SYSTEM AND METHOD FOR PERFORMING DATA BACKUP OF DIGITAL VIDEO RECORDER

摘要

A system and method for performing data backup of a digital video recorder determines if a second safe mechanism key stored in a secure digital (SD) card is valid when the SD card is detected by the digital video recorder, and changes a data storage path from a first hard disk of the digital video recorder to the SD card if the safe mechanism key stored in the SD card is valid. The system and method further changes the data storage path from the SD card to a second hard disk when the second hard disk is installed, and copies backup data stored in the SD card to the second hard disk.