Patent ID: 8185709
Filing Date: 2012-05-22
Classification: G06F

Abstract:
1. A security system for an external data storage apparatus comprising: a data storage, in which data is stored; a high-speed serial bus, which connects the data storage with a data terminal, which reads and writes the data stored in the data storage; a key input unit, which converts an identification (ID), which is input by operation of a user, to an electrical signal and outputs the converted signal; a memory, which stores and sets the ID input by the key input unit; and a control circuit, which, when the ID input by the key input unit is applied, compares the input ID with the preset ID stored in the memory, drives the data storage based on the compared result, and re-arranges storage sectors of the data storage when the data terminal, connected with an error of the ID or without input of the ID, provides access, wherein the control circuit comprises: a security processor, which compares the ID applied through the key input unit with the preset ID and outputs an ID equality signal when the IDs are equal to each other; a data storage controller, which records normal file system information in a boot information sector and/or a file system information sector of the data storage when the ID equality signal of the security processor is received, and normally drives the data storage; and a high-speed serial bus controller, which detects whether or not the high-speed serial bus is connected with the data terminal when the ID equality signal of the security processor is applied.