Patent ID: 9148568
Filing Date: 2015-09-29
Classification: G02B,H04N

Abstract:
1. An image-stabilization apparatus, comprising: an image stabilizer that performs an image-stabilizing operation to counterbalance a camera shake in accordance with sensor signals from a shake-detecting sensor; and a status-determining processor that performs a status determination process to determine whether a status of the camera is in a fixed state or in a non-stationary state on the basis of the signals; the status determination process being performed during an exposure period and characteristics of the image-stabilizing operation being altered according to results of the status determination process, wherein the status-determining processor performs an initial status determination process to determine whether an initial status of the camera is in the fixed state or in the non-stationary state, and the status-determining processor performs a second status determination process to determine whether the initial status has changed to an other status, wherein the second status determination process is changed depending on whether the initial status is determined in the fixed state or in the non-stationary state, and wherein the status-determining processor performs the initial status determination process with reference to a latest N number of the sensor signals at a beginning of the exposure period, and then, in the second status determination process, the status-determining processor counts a number of times the values of the sensor signals are within a predetermined range of signal threshold values during the exposure period, and compares the counted number with a predetermined count threshold value to determine whether or not the initial status has changed to the other status.