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Video window generator with scalable video

  • US 5,402,513 A
  • Filed: 06/27/1994
  • Issued: 03/28/1995
  • Est. Priority Date: 10/15/1991
  • Status: Expired due to Term
First Claim
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1. A video scaling apparatus for scaling down video information originating in an input device end displaying the resulting scaled down video information in a designated window within a screen of an output video device, comprising:

  • a scaling input for receiving scaling information;

    a video input for receiving real time input video information from the input video device;

    means for designating a said window within said screen of said output video device;

    an output for outputting scaled down video information into said designated window within said screen of said output video device in substantially real time; and

    an averaging circuit coupled to said scaling input, said video input, and said output for averaging received said video information corresponding to a predetermined area within a screen of said input video device in accordance with a predetermined averaging algorithm and outputting the averaged video information through said output into a predetermined area of said designated window within said screen of said output video device, the ratio of said predetermined area of said screen of the input video device to said predetermined area of said window within the screen of said output video device being determined by the scaling information received on the scaling input.

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