Patent ID: 7770327
Filing Date: 2010-08-10
Classification: E05F,E05Y

Abstract:
1. A power window system comprising: at least one power-operated window of a vehicle, said at least one power-operated window including a windowpane; a motor generating a mechanical power for opening and closing the power-operated window; a drive mechanism coupled with the motor and configured to move the windowpane in opening and closing directions, using the mechanical power supplied from the motor; a transducer generating a signal usable to derive therefrom a position and a motion direction of the windowpane varying according to movement of the windowpane; a memory in which the position and the motion direction of the windowpane are storable; and a controller electrically connected with the motor, the drive mechanism, the transducer and the memory, to control the movement of the windowpane, the controller configured to work out the position and the motion direction of the windowpane based upon the signal generated by the transducer, wherein if a supply voltage for the motor drops below a predetermined level during the movement of the windowpane, the controller outputs a stop signal instructing the motor to stop rotating, and stores in the memory a first position and a motion direction of the windowpane derived from a first signal generated by the transducer, and wherein the controller compares a second position of the windowpane derived from a second signal generated by the transducer when the supply voltage for the motor is restored to the predetermined level or higher with the first position of the windowpane stored in the memory and if the second position is different from the first position, the first position stored in the memory is corrected toward the motion direction by an amount corresponding to a difference between the first and second positions.