Virus proof tech. for computer

Virus proof tech. for computer

  • CN 1,322,424 C
  • Filed: 12/20/1994
  • Issued: 06/20/2007
  • Est. Priority Date: 12/20/1994
  • Status: Active Grant
First Claim
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1. , a kind of computing machine antivirus card, it is characterized in that comprising in the antivirus card hard disk command decoder and tri-state switch, wherein the output terminal of code translator connects the break-make control end of tri-state switch, by logical circuit the instruction of the computer access hard disk that comprises the virus instruction of encroaching on hard disk is deciphered, when revising the place of safety that some physical space of hard disk forms, code translator can be controlled tri-state switch and disconnect, when not revising the place of safety that some physical space of hard disk forms, code translator can be controlled the tri-state switch closure.

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