Patent ID: 7071637

Claim:
A window lifter control system comprising: a first and a second window lifter motor; a first and a second controller that drive the first and second window lifter motors, respectively; and a first and a second sensor that respectively detect a position of first and second window panes associated with the first and second window lifter motors, respectively, wherein the first and second controllers each comprise: a blocking signal generator that generates a blocking signal when at least one of the first and second sensors indicates that at least one of the first and second window panes is approaching a fully closed position thereof, and a checking circuit that checks whether one of the first and second controllers is transmitting a blocking signal, wherein the first controller causes the first window lifter motor to move the first window pane to an approximately closed position if the checking circuit detects the blocking signal from the second controller and causes the first window lifter motor to move the first window pane to a fully closed position if the checking circuit does not detect the blocking signal from the second controller wherein the fully closed position comprises a position where an upper edge portion of a window pane presses against an associated window seal.