Hand-shake correction method and apparatus of camera module for use in mobile device
摘要
A hand-shake correction apparatus and method for a camera module for typical use in a mobile device. A camera unit includes an angular velocity sensor for sensing an angular velocity of a hand-shake motion of a camera, a position detection sensor for detecting a current position of an image sensor, and an actuator for actuating the image sensor. An Optical Image Stabilizer (OIS) circuit unit controls the actuator using a multi-rate Proportional Integrate Derivative (PID) control scheme that performs control a plurality of times using a shorter control period compared with existing PID controls for a basic period, in which a reference value is updated according to a control reference value by which the image sensor optimally shifts to correct a hand-shake motion.
申请公布号
EP1936956(A2)
申请公布日期
2008.06.25
申请号
EP20070123534
申请日期
2007.12.19
申请人
SAMSUNG ELECTRONICS CO., LTD.;SEOUL NATIONAL UNIVERSITY INDUSTRY FOUNDATION