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Co-ordinate detection system

  • US 4,459,476 A
  • Filed: 01/19/1982
  • Issued: 07/10/1984
  • Est. Priority Date: 01/19/1982
  • Status: Expired due to Fees
First Claim
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1. In an X-Y co-ordinate detection system having a display surface for providing a visual display image when excited and across which to develop X-Y co-ordinates, and having means for providing intersecting paths of radiation across the display surface, the improvement comprising:

  • means including radiation-emissive material located near at least one edge of the display surface for developing, when excited, paths of radiation across said surface; and

    means for developing a flying spot of energy for exciting both the display surface for providing the visual display image and the radiation-emissive material for providing the intersecting paths of radiation across the display surface.

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