A horizontally oriented curve is produced on a raster type cathode ray tube display by storing curve data words in a memory and placing a series of dots on the cathode ray tube screen with each dot being at a height dictated by the value of the respective data word and at a horizontal position dependent...http://www.google.de/patents/US4117473?utm_source=gb-gplus-sharePatent US4117473 - Display system for displaying information in the form of a horizontally oriented curve on a raster type CRT
