In this paper, we describe a new time-sharing based, color-assisted vision system for individuals with color impaired vision. Most such existing color-assisted vision systems apply a non-linear color conversion algorithm that may not relate to natural color. Here, we propose a new time-sharing based color-assisted vision system that may help even color-impaired people clearly perceive color differences. For consistent evaluation and repeatability of experiments, wearing simulated defective eyeglasses is assumed to be the same as a color-impaired person's vision. The effectiveness of the proposed method is evaluated by applying the SD method.