Photography – Camera shake sensing – With accelerometer
Patent
1997-03-03
1997-12-23
Perkey, W. B.
Photography
Camera shake sensing
With accelerometer
G03B 500
Patent
active
057015228
ABSTRACT:
A camera shake amplitude detecting device comprises a mechanical detector for detecting a shake acceleration when a camera body is shaken, and a mechanical shake calculation device for calculating a shake amplitude of the camera body based on the detection output of the mechanical detector. The mechanical shake calculation device discriminates a time point of change between a positive acceleration and a negative acceleration based on the detection output of the mechanical detector, calculates and integration constant, and calculates a velocity by integrating by time the acceleration detected by the mechanical detector.
In order to reduce the time required to calculate exact angular velocity, the constitution comprises an angular velocity sensor for detecting a shake of a camera, a high-pass filter for filtering off certain low frequency components of the output from the angular velocity sensor, a switch means for initializing the high-pass filter when the power source is turned on and a control means for detecting the time when the output of the angular velocity sensor becomes equal to 0 and switching the switch means to bring the high-pass filter in the active state.
REFERENCES:
patent: 4864339 (1989-09-01), Gross et al.
patent: 4864409 (1989-09-01), Platte et al.
patent: 5062696 (1991-11-01), Oshima et al.
patent: 5099694 (1992-03-01), Sumio et al.
patent: 5107293 (1992-04-01), Sekine et al.
patent: 5109249 (1992-04-01), Kitajima
patent: 5210563 (1993-05-01), Hamada et al.
Nikon Corporation
Perkey W. B.
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