A method for controlling a windshield wiper, particularly on a motor vehicle, in which a rain sensor is located on the windshield to be wiped in the region of the windshield wiper and gives off a sensor signal as a function of the amount of wetness. The rate of change of the sensor signal after the windshield...http://www.google.com.au/patents/US5140234?utm_source=gb-gplus-sharePatent US5140234 - Windshield wiper control based on rate of change of sensor signal
