Invention Grant
- Patent Title: Optical image stabilization
- Patent Title (中): 光学图像稳定
-
Application No.: US12948430Application Date: 2010-11-17
-
Publication No.: US08436908B2Publication Date: 2013-05-07
- Inventor: Stuart McLeod , Ewan Findlay
- Applicant: Stuart McLeod , Ewan Findlay
- Applicant Address: GB Marlow-Buckinghamshire
- Assignee: STMicroelectronics (Research & Development) Limited
- Current Assignee: STMicroelectronics (Research & Development) Limited
- Current Assignee Address: GB Marlow-Buckinghamshire
- Agency: Allen, Dyer, Doppelt, Milbrath & Gilchrist, P.A.
- Priority: GB0920191.4 20091118
- Main IPC: H04N5/228
- IPC: H04N5/228

Abstract:
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.
Public/Granted literature
- US20110115926A1 OPTICAL IMAGE STABILIZATION Public/Granted day:2011-05-19
Information query