Patent ID: 8035328

Claim:
A state memorizing device for a movable member, comprising: a lock state determining portion for determining whether or not the movable member, which is driven by a motor, is in a locked state, on the basis of a motor current supplied to the motor; an initial positional information memorizing portion for memorizing an initial positional information indicative of a current position of the movable member before the motor is started; a current positional information calculating portion for calculating a current positional information indicative of the current position of the movable member on the basis of the position indicated by the initial positional information and the motor current, the current position of the movable member changes in response to an actuation of the motor; and a current positional information correcting portion for determining the current position of the movable member on the basis of the initial positional information in a case where the lock state determining portion determines that the movable member is in the locked state and an electrification of the motor is stopped after the motor has just been started, irrespective of the current positional information calculated by the current positional information calculating portion after the motor is started.