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Operating system and data protection

  • US 6,594,780 B1
  • Filed: 10/19/1999
  • Issued: 07/15/2003
  • Est. Priority Date: 10/19/1999
  • Status: Expired due to Term
First Claim
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1. A method of protecting data that resides in locations of a memory in a computer system having a table that identifies a status of the locations of the memory, the method comprising:

  • intercepting a write access command directed to a first location;

    comparing the address of said first location to the table and determining whether said first location is identified as protected;

    if said first location is identified as protected, then determining a second location that is not identified as protected and updating said table to indicate a relationship between said first location and said second location;

    re-directing the write access command to said second location;

    intercepting a subsequent write access command directed to said first location;

    comparing the address of said first location to said table and determining that said first location is identified as protected; and

    re-directing said subsequent write access command to a third location that is not identified as protected and substituting in said table the relationship between said first location and said second location with a relationship between said first location and said third location.

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