Importance

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Abstract

A security device for a digital computer system having a peripheral device and peripheral device controller, includes a security user input/output unit which displays the contents stored in the peripheral device and receives the information for the protection of the peripheral device, a security system controller which is connected to the security user input/output unit, and protects and controls the peripheral device, and a security controller which is connected to the security system controller, the peripheral device controller and the peripheral device, and protects the peripheral device from being controlled by the peripheral device controller to provide a security device operated under another operating system by using hardware, thereby allowing a computer system to interface with an input/output device or a file in a normal state while the security device protects the computer system.

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First Claim