TOUCH-SENSITIVE SYSTEM AND METHOD FOR CONTROLLING THE OPERATION THEREOF

摘要

A touch-sensitive system comprises a light transmissive panel (1) defining a touch surface and an opposite surface; an illumination arrangement (3) comprising emitters (2) configured to introduce light into the panel (1) for propagation in the panel (1) in an emission pattern; a light detection arrangement (5) comprising detectors (4) configured to receive the light propagating in the panel (1). A control unit (6) is arranged to control the operation of the touch-sensitive system. The control unit (6) executes a control method to monitor the light received in the light detecting arrangement (5) for detection of touches on the touch surface, the touches attenuating the light propagating in the panel (1). The control method also selects a mode for the emission pattern in dependence of the occurrence of touches on the touch surface and controls the emission pattern in accordance with the selected mode.