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Method for securing video images

  • US 6,731,756 B1
  • Filed: 06/21/1999
  • Issued: 05/04/2004
  • Est. Priority Date: 06/21/1999
  • Status: Expired due to Term
First Claim
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1. A method of preventing copying of a displayed image from a computer video memory comprising the steps of:

  • a. decoding an image into the video memory;

    b. controlling video hardware and protecting the video memory, wherein the protecting step comprises locking the video memory and issuing at least one pending operation comprising a suspended video operation in a queue for destroying the contents of the video memory;

    c. displaying the image; and

    d. destroying the image displayed in the video memory via said at least one pending operation if an attempt is made to unlock the video memory.

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  • 4 Assignments
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