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Display system

  • US 8,675,064 B2
  • Filed: 07/22/2009
  • Issued: 03/18/2014
  • Est. Priority Date: 07/23/2008
  • Status: Active Grant
First Claim
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1. A display system comprising:

  • a camera device that takes an image of an area illuminated by a lighting device, to produce a motion video image as an output;

    an image capture unit configured to;

    during an effective-image-area determination process, capture a single still image from the motion video image in response to an output signal generated by the lighting device when the lighting device is on, andduring a monitoring routine, sequentially capture a series of still images forming the motion video image;

    an effective-image-area determination unit that performs the following during the effective-image-area determination process;

    receives the captured single still image,determines an effective image area of the captured single still image,calculates coordinate data indicative of the determined effective image area, andstores the calculated coordinate data;

    a storage unit into which said effective-image-area determination unit stores the calculated coordinate data indicative of the effective image area during the effective-image-area determination process; and

    an image control processor that performs the following during the monitoring routine;

    accesses the storage unit in order to extract therefrom the stored coordinate data calculated by said effective-image-area determination unit during the effective-image-area determination process,scales up or down the effective image area of each of the sequentially captured series of still images, according to the extracted stored coordinate data and a display area of a display monitor device.

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