Oliff & Berridge
Apparatus for driving and controlling power window while prohibiting drive of the motor during an initial period
 In an apparatus for driving and controlling a power window according to the present invention, a blanking period is provided to stop the comparison between a variation amount of motor current and a threshold value, during a predetermined period of time T after the drive of the motor has been started. The catching of a foreign object is detected based on the motor current value in the latter half Tm of the blanking period, and is detected based on the variation amount of the motor current after the blanking period. Erroneous operation due to noise at the beginning of the drive of the motor is prevented, and the catching of a foreign object is reliably detected. 
Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho
H H H
H02P H02H H02H
inventional additional inventional
Shuichi Hiromitsu Yukio
Kawase Mizuno Iwasaki