Method for generating a video image comprising a geometrical...

Details Method for generating a video image comprising a geometrical... Method for generating a video image comprising a geometrical...

G - Physics

09

G

375/36

G09G 3/00 (2006.01) H04N 5/262 (2006.01) H04N 5/275 (2006.01)

Patent

CA 1230433

-49- ABSTRACT OF THE DISCLOSURE A generator for generating shapes derived from a square comprises a memory for storing the values of the function ¦X¦ and a memory for storing the values of the function ¦Y¦, an adder for delivering a value M =¦X¦+¦Y¦, and a memory for delivering control signals to a video switcher as a function of the value of M. In the case of points located inside a square corresponding to the equation ¦X¦ + ¦Y¦ = K, the value of M is smaller than K. The address values X and Y are computed as a function of the coordinates of the point considered in the image to be generated and as a function of the geometrical transformations to be made in the figure in order to vary its shape and its position.

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