| 摘要 |
<p>PURPOSE:To detect an angular velocity with less errors by detecting the angular velocity of camera-shake, calculating the point of the time the angular velocity of the camera-shake decreases to zero from the max. value or min. value of the detected output and correcting the angular velocity of the camera-shake. CONSTITUTION:The angular velocity omega of the camera by the camera-shake is detected by an angular velocity sensor 1. High-frequency components and low-frequency components exclusive of the camera-shake are removed from the angular velocity by a low-pass filter 2 and a high-pass filter 3. The angular velocity is then amplified and inputted to an A/D conversion input terminal 5a of a control circuit 5. The angular velocity alpha is determined in accordance with the A/D conversion value determined by the timer interruption operating at every prescribed time and further, whether the code of the angular velocity N inverts or not is judged in order to determine the peak of the angular velocity omegaThe point of the time the code of the angular velocity alpha inverts is defined as the max. value and the time the code changes as the min. value, then the average value of the angular velocity from the extreme value to the extreme value is placed as the angular velocity omega=0. Circuits are initialized when the angular velocity omega=0 is detected.</p> |
