Optical image stabilizer and camera module including the same
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorRuslan Krey
Life of this patent
Estimating the term…
Abstract
An optical image stabilizer including an angular velocity calculator configured to receive an angular velocity signal from an angular velocity sensor and output a corrected angular velocity signal and an angular position signal; a state detector configured to calculate an autocorrelation value according to the corrected angular velocity signal, compare the autocorrelation value with a threshold value to determine a stopped state or a moving state of a camera module, and output a corrected angular position signal and control coefficients; and a lens controller configured to control a lens module according to the corrected angular position signal and the control coefficients.
Claims19
An optical image stabilizer, comprising:
- an angular velocity calculator configured to receive an angular velocity signal from an angular velocity sensor and output a corrected angular velocity signal and an angular position signal;
- a state detector configured to calculate an autocorrelation value on the corrected angular velocity signal, wherein the corrected angular velocity signal and the angular velocity signal from the angular velocity are devoid of luminance data, compare the autocorrelation value with a threshold value to determine a stopped state or a moving state of a camera module, and output a corrected angular position signal and control coefficients;
- and
- a lens controller configured to control a lens module according to the corrected angular position signal and the control coefficients.
A camera module, comprising:
- an angular velocity sensor configured to detect an angular velocity and output an angular velocity signal;
- an angular velocity calculator configured to receive the angular velocity signal from the angular velocity sensor and output a corrected angular velocity signal and an angular position signal;
- a state detector configured to calculate an autocorrelation value on the corrected angular velocity signal, wherein the corrected angular velocity signal is devoid of luminance data, comparing the autocorrelation value with a threshold value to determine a stopped state or a moving state of the camera module, and output a corrected angular position signal and control coefficients;
- a lens controller configured to output a control signal according to the corrected angular position signal and the control coefficients;
- and
- a lens module configured to adjust a position of a lens barrel according to the control signal.
Dependencies are inferred from the claim text.