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COMPOSING METHOD AND APPARATUS

  • US 3,668,685 A
  • Filed: 02/20/1970
  • Issued: 06/06/1972
  • Est. Priority Date: 02/20/1970
  • Status: Expired due to Term
First Claim
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1. A layout device comprising a cathode ray tube and means for producing graphics on the face of the tube in response to coded data, means for deriving a coordinate of a point on the face of the cathode ray tube comprising a device movable along a coordinate axis, said device having a portion extending perpendicular to the axis across the face of the tube, voltage dividing means having a voltage output which is varied in accordance with the movement of the device along the coordinate, said voltage dividing means having a first pair of terminals and said voltage output being a portion of the voltage difference between first terminals plus the voltage of a first one of said terminals, and adjustable power supply means for selectively varying the voltage applied to at least one of said terminals, and means responsive to said output voltage to provide digital coordinate data.

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