G - Physics – 06 – F
Patent
G - Physics
06
F
375/46, 350/3.5
G06F 3/153 (2006.01) A63F 13/00 (2006.01) G09F 9/00 (2006.01) H04N 3/22 (2006.01)
Patent
CA 1053365
ABSTRACT OF THE DISCLOSURE For controlling the location of an image and to cause the image to move variously with respect to perpendicular coordinates, such as X, Y coordinates, on a video display tube, a first set of counters is arranged to generate artificial, horizontal and vertical sync pulses for use in conjunction with a video adder for controlling the image on a TV screen. A second set of counters driven from the same clock source as the first supplies information signals to the video adder for controlling the location at which the image will be displayed. Each of the two predetermined counters constituting the second set of counters is capable of being preset to any of a plurality of counts so as to cause a horizontal or vertical displacement of the image on the race of the display tube with respect to the locus defined by the count generated by the first set of counters. .
310679
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