Patent ID: 9091898
Filing Date: 2015-07-28
Classification: G02F,G09G

Abstract:
1. A method for controlling transmissivity of an electrochromic device, the method comprising: receiving an illuminance input indicating an amount of illuminance in a space; receiving a color input indicating whether a high b* characteristic value is tolerated for the electrochromic device; determining a desired range of transmission states based on the illuminance input; when a high b* characteristic value is tolerated for the electrochromic device, setting the electrochromic device to a first transmission state associated with a first color of the electrochromic device, the first color having a high b* characteristic value, wherein the first transmission state is within the desired range of transmission states; and when a high b* characteristic value is not tolerated for the electrochromic device, setting the electrochromic device to a second transmission state associated with a second color, the second color having a low b* characteristic value, wherein the second transmission state is within the desired range of transmission states.