| 摘要 |
PURPOSE: A system for intercepting a virus invasion is provided to cut-off an invasion of a computer virus by developing a hardware device and a software program for eliminating a computer virus completely. CONSTITUTION: In computer virus output data having the first virus, only output screen contents being displayed on a monitor(24) are detected by applying a duplicating machine principle. The virus information data are converted into information data not having a virus. A hardware virus invasion cut-off device(20) for eliminating an invasion of a virus when external data of a communication line are inputted and a computer virus invasion cut-off device for eliminating an invasion of various kinds of software viruses are developed. Various computer viruses being invaded from an exterior are cut-off completely and source data are protected.
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