Patent ID: 7848626
Filing Date: 2010-12-07
Classification: G03B

Abstract:
1. A shake detection apparatus comprising: a sensor which detects velocity or angular velocity; a high-pass filter which removes a low-frequency component from an output signal of the sensor; a shake detection device which detects shake of an apparatus body based on an output signal from the high-pass filter; a determination device which determines whether the output signal of the high-pass filter contains a swing-back component outputted when a shake continued in one direction stops; and a removal device which removes the swing-back component from the output signal of the high-pass filter based on a determination result of the determination device, wherein the determination device comprises an integrating device that integrates the output signal of the high-pass filter, and the determination device determines that the output signal of the high-pass filter contains the swing-back component when the output signal of the high-pass filter is larger than a first threshold and an inversion signal of the output signal of the integrating device is larger than a second threshold or when the output signal of the high-pass filter is smaller than the negative of the first threshold and an inversion signal of an output signal of the integrating device is smaller than the negative of the second threshold.