Anti-shake apparatus
AssigneePentax Ricoh Imaging Company, Ltd.
InventorYukio Uenaka
Life of this patent
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Abstract
An anti-shake apparatus comprises an angular velocity sensor and a controller. The angular velocity sensor detects an angular velocity. The controller controls the angular velocity sensor and performs an anti-shake operation based on the output signal from the angular velocity sensor. The controller calculates an angular velocity signal, based on the output signal from the angular velocity sensor before a predetermined period which is longer than a predetermined time interval and the output signal from the angular velocity sensor after the predetermined period, at the predetermined time interval, during the predetermined period.
Claims7
An anti-shake apparatus comprising:
- a movable unit that is movable;
- an angular velocity sensor that detects an angular velocity;
- and
- a controller that controls said angular velocity sensor, performs an anti-shake operation that moves said movable unit based on an output signal from said angular velocity sensor, and performs a predetermined processing operation that is different from said anti-shake operation;
- said controller using a length of time of a predetermined period of said predetermined processing operation as a sampling cycle in said anti-shake operation for calculating a driving force to move said movable unit during said predetermined period, and using a length of time of a predetermined time interval as said sampling cycle for calculating said driving force, except for during said predetermined period;
- and
- said length of time of said predetermined period is a variable integer multiple of said length of time of said predetermined time interval.
A photographing apparatus comprising:
- a movable unit that is movable;
- an angular velocity sensor for detecting an angular velocity;
- a DSP that performs an image processing operation on an image signal obtained by an imaging operation;
- and
- a controller that controls said angular velocity sensor, performs an anti-shake operation that moves said movable unit based on an output signal from said angular velocity sensor, and performs a predetermined processing operation that is different from said anti-shake operation and said image processing operation;
- said controller using a length of time of said predetermined processing operation as a sampling cycle in said anti-shake operation for calculating a driving force to move said movable unit during said predetermined processing operation, using a length of time of a communication between said DSP and said controller as said sampling cycle in said anti-shake operation for calculating said driving force to move said movable unit during said communication between said DSP and said controller, and using a length of time of a predetermined time interval as said sampling cycle for calculating said driving force except for during said predetermined processing operation and said communication between said DSP and said controller;
- said length of time of said predetermined processing operation being longer than the length of time necessary to perform said anti-shake operation one time;
- said length of time of said communication between said DSP and said controller being longer than said length of time necessary to perform said anti-shake operation one time.
Dependencies are inferred from the claim text.