A method and circuit for improving a video signal. They can be used to nullify the gamma correction applied at the broadcast end for cathode-ray tube signals when using a spatial light modulator display. Additionally, the method and circuit can be used to generally improve the quality of the display...http://www.google.com.au/patents/US5303055?utm_source=gb-gplus-sharePatent US5303055 - Method and apparatus to improve a video signal
