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    • 30. 发明申请
    • OPTICAL IMAGE STABILIZATION
    • 光学图像稳定
    • US20110115926A1
    • 2011-05-19
    • US12948430
    • 2010-11-17
    • Stuart MCLEODEwan Findlay
    • Stuart MCLEODEwan Findlay
    • H04N5/228
    • G02B27/646G03B5/00G03B2205/0007G03B2205/0084G03B2217/005H04N5/23258H04N5/23287
    • An optical image stabilization (OIS) system may be used in a camera having an optical system which includes a motion compensating optical element driven by an actuator. The system may include a motion sensor providing a motion signal, a frequency detector for detecting a dominant frequency being that frequency within the motion signal which may produce the most significant motion blurring in the image produced by the camera, and a tunable high-pass filter for filtering the motion signal and supplying the filtered motion signal as an actuator control signal. The tunable high pass filter may be tuned based upon the dominant frequency to a filter characteristic which provides a phase lead substantially canceling a phase lag of the actuator at that frequency.
    • 可以在具有光学系统的照相机中使用光学图像稳定(OIS)系统,该光学系统包括由致动器驱动的运动补偿光学元件。 该系统可以包括提供运动信号的运动传感器,用于检测主要频率的频率检测器,该主频是运动信号内的频率,其可以产生由相机产生的图像中最重要的运动模糊,以及可调谐高通滤波器 用于过滤运动信号并将滤波的运动信号提供为致动器控制信号。 可调谐高通滤波器可以基于主频到滤波器特性来调节,该滤波器特性提供相位引线,从而在该频率下基本上消除致动器的相位滞后。