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TRACKING DEVICE AND IMAGE-CAPTURING APPARATUS

  • US 20110234885A1
  • Filed: 06/03/2011
  • Published: 09/29/2011
  • Est. Priority Date: 10/03/2006
  • Status: Active Grant
First Claim
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1. A tracking device, comprising:

  • an image sensor that obtains image information of an image present within an image plane formed via an optical system;

    a tracking unit that tracks a target within the image plane based upon the image information;

    a focus detection unit that detects a focus adjustment state of the optical system over at least one focus detection area set in the image plane;

    a focus adjustment unit that executes focus adjustment for the optical system based upon the focus adjustment state detected in the focus detection area corresponding to a position of the target;

    a decision-making unit that makes a decision as to whether or not the target is being tracked based upon results of tracking operation executed by the tracking unit; and

    a control unit that bans the focus adjustment based upon results of the decision made by the decision-making unit.

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