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Method and system for automatically focusing a camera

  • US 7,909,256 B2
  • Filed: 12/31/2005
  • Issued: 03/22/2011
  • Est. Priority Date: 12/31/2005
  • Status: Active Grant
First Claim
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1. A method in an image capture unit having at least a first light path adjustment element for automatically focusing an image received by the image capture unit relative to a target, the target being present in a sequence of multiple scanned frames, the method comprising:

  • dividing into a plurality of sections, each frame from the sequence of multiple scanned frames; and

    iteratively performing a plurality of times in connection with each frame as the frame is scanned from the image capture unit, wherein each iteration is performed relative to alternate sections of the frame,a determination of a relative focus of the target within the corresponding section of the frame, andan adjustment of a position of at least the first light path adjustment element in response to the determined relative focus.

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