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http://dx.doi.org/10.6109/jkiice.2007.11.2.265

Comparison among Gamma(${\gamma}$) Line Systems for Non-Linear Gamma Curve  

Jang, Won-Woo (동아대학교 전자공학과)
Lee, Sung-Mok (동아대학교 전자공학과)
Ha, Joo-Young (동아대학교 전자공학과)
Kim, Joo-Hyun (동아대학교 전자공학과)
Kim, Sang-Choon (동아대학교 전자공학과)
Kang, Bong-Soon (동아대학교 전자공학과)
Abstract
This proposed gamma (${\gamma}$) correction system is developed to reduce the difference between non-linear gamma curve produced by a typical formula and result produced by the proposed algorithm. In order to reduce the difference, the proposed system is using the Least Squares Polynomial which is calculating the best fitting polynomial through a set of points which is sampled. Each system is consisting of continuous several kinds of equations and having their own overlap sections to get more precise. Based on the algorithm verified by MATLAB, the proposed systems are implemented by using Verilog-HDL. This paper will compare the previous algorithm of gamma system such as Existing system with Seed Table with the latest that such as Proposed system. The former and the latter system have 1, 2 clock latency; each 1 result per clock. Because each of the error range (LSB) is $1{\sim}+1,\;0{\sim}+36$, we can how that Proposed system is improved. Under the condition of SAMSUNG STD90 0.35 worst case, each gate count is 2,063, 2,564 gates and each maximum data arrival time is 29.05[ns], 17.52[ns], respectively.
Keywords
Gamma Correction; Noll-linear Gamma Clove;
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