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Method and apparatus for magnifying computer screen display

  • US 20060146075A1
  • Filed: 01/06/2005
  • Published: 07/06/2006
  • Est. Priority Date: 01/06/2005
  • Status: Active Grant
First Claim
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1. A computer-readable medium containing instructions that, when executed by a computer including a processor, a memory, and a display device, cause the processor to perform operations comprising:

  • receiving a first subroutine call to draw a non-text element on a display device;

    drawing the non-text element into a shadow area;

    receiving a second subroutine call to draw a text element on the display device;

    storing the text element in a storage area;

    composing a first zoom bit map containing a first portion of the shadow area and a first rendering of the text element in the storage area;

    passing the first zoom bit map to a video driver for outputting on the display device;

    composing a second zoom bit map containing a second portion of the shadow area and a second rendering of the text element in the storage area; and

    passing the second zoom bit map to the video driver for outputting on the display device.

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