Image scanning apparatus for light integrating and predicting signals
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United States of America Patent
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Jul 30, 2013
Grant Date -
Feb 12, 2009
app pub date -
Dec 25, 2006
filing date -
Dec 26, 2005
priority date (Note) -
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Abstract
An image sensor using three-color, e.g., R, G, and B light-emitting elements assures a period in which all the three colors are turned on and periods in each of which one light-emitting element is turned off during a scan period per pixel, and integrates and measures amounts of light of the respective periods. An amount of light based on the OFF light-emitting element is calculated based on a difference between the amounts of light during the full light-ON period and each light-OFF period to define an amount of light of the light-emitting element, and light intensity information corresponding to each light-emitting element is obtained based on a total amount of light during the entire scan period per pixel, and the amount of light of each light-emitting element.
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