Patent ID: 7856179
Filing Date: 2010-12-21
Classification: G03B,H04N

Abstract:
1. An image stabilization control circuit for driving an image stabilization mechanism of an image-capturing device on the basis of a displacement velocity of the image-capturing device detected by a vibration detector provided to the device, the image stabilization control circuit comprising: a vibration-compensation-data-generating circuit for generating vibration-compensation data corresponding to a degree to which the image-capturing device is displaced, on the basis of displacement velocity data corresponding to the displacement velocity; and a drive-signal-generating circuit for generating a drive signal for driving the image stabilization mechanism, on the basis of the vibration-compensation data outputted from the vibration-compensation-data-generating circuit; wherein the vibration-compensation-data-generating circuit comprises an input format conversion circuit for converting the displacement velocity data from fixed-point format to floating-point format; a high-pass filter that is a digital filter for performing a filtering process for attenuating a low-frequency component and transmitting a vibration component of a target compensation region, on the floating-point format displacement velocity data; an integration circuit that is a digital filter for performing an integration process on data outputted by the high-pass filter, and generating the vibration-compensation data; and an output format conversion circuit for converting the vibration-compensation data obtained by the integration circuit from floating-point format to fixed-point format, and outputting the vibration-compensation data from the vibration-compensation-data-generating circuit.