Patent ID: 8244387

Claim:
A method of controlling an operating member from a first position to a second position, comprising: initially increasing an operating speed of the operating member from zero while increasing an acceleration value of the operating member from zero and then decreasing the acceleration value to zero; subsequently decreasing the operating speed while decreasing the acceleration value from zero and then increasing the acceleration value to zero; and controlling a derivative of the acceleration value of the operating member such that the derivative during an acceleration increasing time during which the acceleration value is increased and the derivative during an acceleration decreasing time during which the acceleration value is decreased are asymmetric with respect to each other, wherein the derivatives during the acceleration increasing time and the acceleration decreasing time are controlled to be asymmetric with respect to each other, in each of at least one of an acceleration period during which the operating speed of the operating member is increased from zero, and a deceleration period during which the operating speed is decreased to zero.