Patent ID: 7231727

Claim:
An apparatus for removing moisture generated on a surface comprising: a surface resistance detector for detecting resistance of the surface, and outputting a corresponding signal; a static electricity preventer circuit for preventing generation of static electricity to signals sensed by the surface resistance detector; a moisture sensor comprising, a reference current generator for generating a reference current, a current detector for determining moisture generation states by detecting variations of a current that flows according to resistance of the surface resistance detector, comparing the detected current variations with the reference current, and outputting a moisture sensing signal based on the determined moisture generation state, a detection signal output unit for outputting corresponding logical value signals according to detected values output by the current detector, a signal smoother for converting the logical value signals output by the detection signal output unit into smoothed digital signals, and outputting the digital signals, and a current source supply for supplying a current source used for an operation of the current detector and the detection signal output unit, wherein the current source supply comprises a first through third current sources for supplying power used for an operation of the current detector, and a fourth current source for supplying a current used for operation of the detection signal output unit; a controller for receiving the moisture sensing signal from the moisture sensor, and controlling to removing moisture generated on the surface; and a driver being operable according to a control signal output by the controller, for removing the moisture generate on the surface.