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Imaging and display apparatus, information input apparatus, object detection medium, and object detection method

  • US 8,610,670 B2
  • Filed: 08/21/2007
  • Issued: 12/17/2013
  • Est. Priority Date: 08/31/2006
  • Status: Active Grant
First Claim
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1. An imaging and display apparatus comprising:

  • an imaging-and-display panel having an image display function and an imaging function;

    a backlight;

    a processor; and

    a memory device storing instructions which when executed by the processor cause the processor to operate with the imaging-and-display panel to;

    (a) obtain a display-light-based image by imaging an object close to the imaging-and-display panel during a light-emission period when the backlight is turned on;

    (b) obtain a shadow image by imaging the object during a non-light-emission period when the backlight is turned off;

    (c) generate a difference image representing a difference between the display-light-based image and the shadow image; and

    (d) obtain information concerning at least one of a position, shape, and size of the object taking the shadow image and the difference image into account.

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