This paper is a result of the study that develops ghost eliminator which removes ghost among the ghosted analog or digital TV signal. We proposed innovative multilevel SIGN algorithm which is operated more stable and speedy than conventional LMS or SIGN algorithm. We compared its convergence speed with SIGN algorithm by experiment. We can eliminate ghost more speedy and stable than conventional method by using the multi-level SIGN algorithm which is presented in this paper. Multi-level SIGN algorithm can be used in any other applications instead of LMS or SIGN algorithm for stability and speed.