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Patent Searching and Data


Title:
CAMERA SHAKE CORRECTING DEVICE
Document Type and Number:
Japanese Patent JP2002156673
Kind Code:
A
Abstract:

To obtain a camera shake correcting device capable of preventing the divergence of the numerical value of a calculated angle being an integrated value at the time of calculating camera shake correction amount by using an angular velocity detection means for detecting a shake.

This device is constituted of an angular velocity detection sensor 11 for detecting a shake, a correction lens 21 for correcting an image blur caused by the shake, a voice coil motor 22 for driving the lens 21, and an arithmetic calculating circuit 14 for calculating correction amount by arithmetically operating a signal from the sensor 11. The driving amount of the lens 21 is calculated from the discriminated result by an angular acceleration discrimination circuit 17 for discriminating the state of the differential value (angular acceleration) of angular velocity obtained by the sensor 11 before calculating the correction amount and a signal from the sensor 11 and the motor 22 is controlled based on the calculated result.


Inventors:
ASANUMA TOSHIYA
Application Number:
JP2000355249A
Publication Date:
May 31, 2002
Filing Date:
November 22, 2000
Export Citation:
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Assignee:
SIGMA CORP
International Classes:
G01C19/00; G01C19/56; G03B5/00; (IPC1-7): G03B5/00; G01C19/00; G01P9/04
Domestic Patent References:
JPH06118469A1994-04-28
JPH0720521A1995-01-24
JP2001142103A2001-05-25