Patent ID: 7552281

Claim:
An apparatus for processing data using an external memory, the apparatus comprising: an external memory power supply for providing power to the external memory; an external memory insertion detector for detecting insertion/removal of the external memory, and continuing to detect an inserted state of the external memory when the power provided from the external memory power supply is terminated in the inserted state of the external memory; a first controller for, when the external memory is in use, providing power to the external memory by controlling the external memory power supply, and terminating the power provided to the external memory via the external memory power supply when the external memory is not in use, generating a data list by detecting data from the external memory, and processing normal data among the data stored in the external memory; a second controller for processing video data among the data stored in the external memory; a switch that is switched to the first controller in a process of processing the normal data stored in the external memory, and switched to the second controller in a process of processing the video data stored in the external memory; and an internal memory for storing a program required for using the external memory and storing the generated data list of the external memory, wherein the first controller reads a previously generated data list without regenerating a new data list when power is provided again to the external memory.