Video interface for capturing an incoming video signal and reformatting the video signal
Digital image interpolator with multiple interpolation algorithms
Flicker reduction and size adjustment for video controller with interlaced video output
Method and apparatus for forming a video signal using motion estimation and signal paths with different interpolation processing
Method and apparatus for upscaling an image in both horizontal and vertical directions Patent #: 5739867
ApplicationNo. 105079 filed on 06/25/1998
US Classes:348/441, FORMAT CONVERSION348/446, Progressive to interlace348/447, Field rate type flicker compensating348/581Size change
ExaminersPrimary: Kostak, Victor R.
Attorney, Agent or Firm
International ClassH04N 007/01
AbstractA method and system is disclosed for scaling computer video in the process of scan rate conversion. In the disclosed system and method storage is provided for at least two lines of graphics pixels per video component composing the computer graphics signals and less than a full frame's worth of the graphics pixels. The graphics pixels are stored as they are provided so that the newest graphics pixels or a linear combination of the newest graphics pixels and stored graphics pixels overwrite previously-stored graphics pixels. In a repeating pattern for every RV VGA lines, where RVࣙ2, television pixels composing the television video signals are generated from a weighted sum of the stored graphics pixels such that a different precomputed set of weights are used to compute the television pixels for each of the generated television lines. The television signals are horizontally and vertically scaled so the graphics image corresponding to the computer graphics signals being converted fits within a television display.