“…Difficult operations are often required for several nonlinear procedures, such as median and rank-order filtering [20]. Several RNS comparison [3,5,10,12,13,20,[22][23][24]27], sign-detection [9], and division [25] methods have been proposed over the past two decades. As regarding the role of comparison in other complicated operations such as division, sign, and overflow detection, it is expected that a cost-effective and high-speed implementation of the comparison will assist in improving other complicated operations.…”