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Adaptive electronic zoom control

  • US 6,704,048 B1
  • Filed: 08/27/1998
  • Issued: 03/09/2004
  • Est. Priority Date: 08/27/1998
  • Status: Expired due to Fees
First Claim
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1. An adaptive electronic zoom system having electronic pan and tilt capability, comprisinga camera comprising an image sensor, said image sensor defining an imager area with an imager width, an imager height and an imager center;

  • a controller responsive to at least an input signal, the controller generating control signals;

    an address generator responsive to the control signals and adapted to select a zoom area located within the imager area, said zoom area having a zoom width, a zoom height and a zoom center, wherein the imager width and imager height divided by the respective zoom width and zoom height, respectively, define a zoom ratio and wherein the horizontal distance between said zoom center and said image center defines a pan position and the vertical distance between said zoom center and said image center defines a tilt position;

    wherein the controller automatically increases the zoom ratio as a function of the respective pan and tilt position so that the zoom area is located entirely within the imager area.

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