Title: Method and system for correcting uniformity of projection display color
Application Number: 200410025648 Application Date: 2004.06.22
Publication Number: 1595491 Publication Date: 2005.03.16
Approval Pub. Date: 2007.09.26 Granted Pub. Date: 2007.09.26
International Classifi-cation: H04N9/31;G09G5/02
Applicant(s) Name: Zhejiang University Address:
Inventor(s) Name: Chen Ying;Li Haifeng;Liu Xu
Attorney & Agent: zhang fagao
Abstract:
    The invention relates to a method and the corresponding system to correct the color evenness of the projector scope. It divides uniformly the display screen into n1×n2 correction areas. Therefore there are (n1 1)×(n2 1) correction points. The red, green and blue brightness of each correction point varies by tuning the register values of the (n1 1)×(n2 1) matrix corresponding to the three colors of the tuning circuit. The correction brightness values are stored in the register, which will be added to the video signals brightness values of the relevant correction points. The results are served as the final video signal output. The brightness ratios of the three primary colors are kept equal by collecting the red, green and blue brightness values of each correction point through CCD and then tuning the corresponding correction brightness values. By this means, the color evenness is corrected.
Time: 12