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Touch screen target designator

  • US 4,286,289 A
  • Filed: 10/31/1979
  • Issued: 08/25/1981
  • Est. Priority Date: 10/31/1979
  • Status: Expired due to Term
First Claim
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1. In a target tracking system having a tracker for providing gimbal commands for pointing an object along a target line-of-sight, an imaging sensor means for detecting the target position with respect to the object line-of-sight, and an image display means for visually displaying the target image, the improvement comprising:

  • a touch screen overlay disposed adjacent the image display means for viewing visual display of said target image therethrough and having touch selectable outputs identifying where coordinates are touched on the touch screen, and control interface means coupled between said touch screen overlay outputs and said tracker for providing track enable and coordinate position input signals indicative of said target position in the field of view of said imaging sensor means said control interface means comprising first and second channels coupled to said touch screen outputs for separately processing signals indicative of respective x and y coordinate data and a track enable signal to said tracker, each of said channels comprising counter means adapted to receive coordinate axis input data and reset input data, a digital to analog converter, quadrant logic means adapted for coupling signal data from said counter means to said converter, and operational amplifier means coupled to and responsive to said converter for providing coordinate axis output data for providing tracker input position data.

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