Display screen performance or content verification methods and apparatus
First Claim
1. A display for displaying a time-dependent image comprising:
- a display panel for displaying the image;
receiving means to receive an incoming data stream containing images and including at least an intermittent verification signal;
a processor to process the data feed and drive the display to present said images; and
a control means to check for the verification signal in either the data feed or the display image and control the display if an appropriate verification signal is not present.
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Accused Products
Abstract
This invention relates to a method or apparatus for provision of display screens. Display screens used in remote locations such as those as may be used for billboards etc. run the risk of tampering or interference with the data supplied to the screens for display. This may particularly be preferment with billboards controlled by the worldwide web. The invention sets out methods of verifying the content to be displayed on the screen including checking the incoming data feed or checking the actual image displayed on the screen. In addition, the invention provides various methods of monitoring the performance of the screen to verify the images being displayed and to adjust for degradation of display components or otherwise monitor the performance of the display.
110 Citations
23 Claims
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1. A display for displaying a time-dependent image comprising:
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a display panel for displaying the image;
receiving means to receive an incoming data stream containing images and including at least an intermittent verification signal;
a processor to process the data feed and drive the display to present said images; and
a control means to check for the verification signal in either the data feed or the display image and control the display if an appropriate verification signal is not present. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method verifying a data feed or image on a remote display screen comprising:
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combining a verification signal in a data feed containing the desired images for display;
sending said data feed and said verification signal to said display;
checking the incoming data feed or the display image for the presence of the verification signal; and
controlling the display screen in response to receipt of a data feed or display of an image not containing said verification signal. - View Dependent Claims (10, 11, 12, 13, 14, 15, 17, 18, 19, 20)
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16. A method of monitoring the performance of a display comprising:
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optically sensing output from at least a representative portion of visible or non-visible display units;
providing a test signal to said display units;
comparing said optically sensed output with an expected output; and
controlling said display in accordance with the results of said comparison.
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21. A display for displaying time-dependent images comprising:
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a display panel containing a plurality of display units for displaying said time-dependent images;
at least one optical sensor to sense output from at least a representative portion of visible or non-visible display units;
comparing means to compare the sensed optical output with an expected or desired output; and
control means to control the display in response to the result of said comparison. - View Dependent Claims (22, 23)
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Specification