Gray level control method and optical projection system
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United States of America Patent
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Dec 26, 2017
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May 15, 2014
filing date -
Aug 29, 2013
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Abstract
The invention provides a gray level control method for outputting a total gray level during a total period, including: dividing the total period into M unit periods; alternatively outputting a gray level “0” or a selected gray level during each unit period; and integrating the gray levels output during the M unit periods to obtain the total gray level, wherein during each of N successive unit periods of the M unit periods the selected gray level is a first gray level, and during each of the remaining (M−N) unit periods the selected gray level is lower than the first gray level.
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