Image stabilization control circuit and image-capturing device

Details Image stabilization control circuit and image-capturing device Image stabilization control circuit and image-capturing device

2009-11-13

2010-12-21

Fuller, Rodney E (Department: 2862)

Photography

Camera shake sensing

Having stabilization system

C348S208990

Reexamination Certificate

active

07856179

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 (Dω) 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 Dω, is integrated, and data (Dθ) corresponding to an oscillation angle is generated. After a centering process is performed, Dθis 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.

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patent: 2008/0174663 (2008-07-01), Iwabuchi
patent: 2010/0013937 (2010-01-01), Washisu et al.
patent: A-2002-246913 (2002-08-01), None

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