The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 30, 2011
Filed:
Dec. 18, 2007
Jun-mo Koo, Suwon-si, KR;
Jin-young Choi, Seoul, KR;
Byung-kwon Kang, Suwon-si, KR;
Dong-hoon Jang, Suwon-si, KR;
Pyo-jae Kim, Seoul, KR;
Dong-sung Song, Seoul, KR;
Hyung-jin Chang, Seoul, KR;
Jun-Mo Koo, Suwon-si, KR;
Jin-Young Choi, Seoul, KR;
Byung-Kwon Kang, Suwon-si, KR;
Dong-Hoon Jang, Suwon-si, KR;
Pyo-Jae Kim, Seoul, KR;
Dong-Sung Song, Seoul, KR;
Hyung-Jin Chang, Seoul, KR;
Samsung Electronics Co., Ltd., Maetan-Dong, Yeongtong-Gu, Suwon-Si, Gyeonggi-Do, KR;
Seoul National University Industry Foundation, Bongcheon-Dong, Gwanak-Gu, Seoul, KR;
Abstract
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.