Patent ID: 8400291

Claim:
An information display apparatus comprising: a display unit including a non-volatile display medium; a temperature detecting unit configured to detect a display unit temperature which is temperature of the display unit; a temperature determining unit configured to determine whether the display unit temperature is outside of a set temperature range which is predetermined based on characteristics of the display unit; a display control unit configured to perform on the display unit a burn prevention display which is predetermined based on the characteristics, when the display unit temperature is outside of the set temperature range, a timer unit configured to start measuring time from a change of a display on the display unit; and a time determining unit configured to determine whether the time measured by the timer unit exceeds a threshold time after the change, wherein the temperature detecting unit detects the display unit temperature if the measured time reaches the threshold time after the change, and wherein the display control unit performs the burn prevention display on the display unit when the detected display unit temperature is outside of the set temperature range.