A light-responsive control device of an electrochromic rearview mirror system is disclosed. The light-responsive control device includes a discriminating circuit for generating a first and a second reference levels provided for daytime and nighttime glaring determination, respectively. By providing a...http://www.google.ca/patents/US6936807?utm_source=gb-gplus-sharePatent US6936807 - Light-responsive control device of electrochromic rearview mirror system
