A plurality of groups of linearly adjustable control potentiometers control respective lights of a given light scene in a given area. A particular group of potentiometers to control the scene is selected by a respective push-button switch on the control panel. Each of the potentiometer control sliders...http://www.google.fr/patents/US4727296?utm_source=gb-gplus-shareBrevet US4727296 - Lighting scene control panel and control circuit
