Image stabilization control circuit and image-capturing device

Abstract

An image stabilization control circuit of an image-capturing device prevents overflow of data in an integration process performed in a digital signal process on a signal outputted by a gyro-sensor. A gyro-filter receives, as an input, fixed-point format angular velocity data (D) obtained by subjecting an output signal from the gyro-sensor to an analog-to-digital conversion. In the gyro-filter, an input format conversion circuit converts from fixed-point format to floating-point format. A camera shake vibration component is obtained from the floating-point format D, is integrated, and data (D) corresponding to an oscillation angle is generated. After a centering process is performed, Dis converted from floating-point format to fixed-point format by an output format conversion circuit, and outputted from the gyro-filter. A drive signal for driving an image stabilization mechanism is generated on the basis of the data outputted by the gyro-filter.