LIGHT SENSING IN DISPLAY DEVICE
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United States of America Patent
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Issued Date -
Aug 12, 2010
app pub date -
Feb 6, 2009
filing date -
Feb 6, 2009
priority date (Note) -
Abandoned
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Abstract
A method for controlling an OLED display includes providing an OLED device and a controller, measuring and communicating the amount of ambient and emitted OLED light incident upon an array of photosensors distributed over the display area for measuring the incident light, operating the OLED pixels with at least one calibration image and forming an OLED compensation map in response to a first measured incident light, receiving a second incident light measurement and forming an ambient illumination map, receiving and compensating an image and driving the OLED pixels with the compensated image, receiving a third incident light measurement and forming large-area average values and small-area average values, and comparing the large-area average values and the small-area average values to a predetermined criterion, and determining the location of one or more light occlusions or reflections.
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