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Control device, apparatus, and control method for tracking correction based on multiple calculated control gains

  • US 10,594,939 B2
  • Filed: 04/21/2016
  • Issued: 03/17/2020
  • Est. Priority Date: 04/22/2015
  • Status: Active Grant
First Claim
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1. A control device that corrects a shake of imaging apparatus and that tracks a subject using a correcting lens moving the subject in a photographed image, the device comprising:

  • at least one processor or circuit configured to perform the operations of the following units;

    a first calculating unit configured to calculate a shake correction amount for correcting the shake of the imaging apparatus on the basis of an output of an angular velocity meter;

    a second calculating unit configured to calculate a tracking correction amount as a control amount for tracking the subject on the basis of an output of an image sensor; and

    a control unit configured to control the correcting lens on the basis of a lens drive amount obtained by adding the shake correction amount and the tracking correction amount, so that a difference between a position of the subject and a center of the photographed image becomes smaller,wherein the control unit changes a control gain of the tracking correction amount based on a detected photographing condition to change a degree of tracking of the subject,wherein the control unit calculates a plurality of control gains by different processing,wherein the control unit selects the control gain having a minimum tracking correction amount from the plurality of calculated control gains when shake correction is turned ON and tracking correction is turned ON.

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