Patent ID: 7009355

Claim:
A wiper control system comprising: a rain droplet detector with a plurality of switches that are configured to be electrically connected by rain droplets, each switch outputting one of two different signals according to an electrical connection thereof; a multiplexer receiving signals from each of the plurality of the switches, the multiplexer being configured to repeatedly perform a process of selecting one of the received signals and outputting the selected signal; a count register connected to the multiplexer to receive the signal output from the multiplexer, the count register counting a number of the signals corresponding to the electrical connection of the switches of the rain droplet detector and outputting a counted value; and a wiper control unit connected to the count register to receive the counted value, the wiper control unit controlling a speed of a wiper based on the counted value, further comprising a clock signal provider providing a clock signal to the multiplexer, wherein the multiplexer selects one of the signals input from the rain droplet detector based on the received clock signal, further comprising a wiper position sensor detecting a position of the wiper and outputting a corresponding wiper position signal, wherein the clock signal provider receives the wiper position signal and is configured to output the clock signal when the wiper rotates by a predetermined angle.