We found out the application of LDR in signal processing. We researched an invention and found its patent titled "Ambient light-dependent video-signal processing". (Patent No: 6229577) This method made the use of LDR for measurement of ambient light, the objective being better ambient light-dependent video-signal processing. Further indication of a large amount of change in ambient light and the immediate processing of the video signal is also a vital objective for this method. This method is a very useful application in video signal processing.
Nice idea.
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