| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an apparatus and a method for driving a piezoelectric actuator. <P>SOLUTION: The apparatus for driving the piezoelectric actuator includes: a lens position sensing part 21 sensing a position of a lens 20 and generating a sensed lens position value; a lens control part 22 comparing the sensed lens position value with a target lens position value for auto-focus to determine a moving direction of the lens; and an actuator driving part generating an actuator driving signal for driving the piezoelectric actuator to move the lens in the moving direction of the lens determined by the lens control part, wherein the lens control part temporarily stops the operation of the actuator driving part, and receives input of the sensed lens position value corresponding to the lens position sensed by the lens position sensing part and compares the sensed lens position value with the target lens position value while the operation of the actuator driving part is temporarily stopped. <P>COPYRIGHT: (C)2009,JPO&INPIT |
