×

Method and apparatus for scaling images having a plurality of scan lines of pixel data

  • US 5,793,379 A
  • Filed: 08/29/1997
  • Issued: 08/11/1998
  • Est. Priority Date: 04/03/1995
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of scaling images in a digital display system having a central processing unit, and a graphics control circuit including a frame buffer, comprising the steps of:

  • interpolating the pixels of each scan line of pixels to a selected scale using the central processing unit as the scan line is written,replicating in the slow scan direction each interpolated scan line being sent to the frame buffer to a selected scale using circuitry of the graphics control circuit,interpolating scan lines in the slow scan direction utilizing selected scan lines stored in the frame buffer as input scan lines, andreplacing existing scan lines which have been selected for interpolation with the interpolated scan lines.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×