Patent ID: 7515133

Claim:
An onboard display device comprising: a liquid crystal display installed in a vehicle; a heating unit that warms up the liquid crystal display; storage means that stores a plurality of scheduled start times of the vehicle; clock means that detects a current time; control means that drives the heating unit for warming up the liquid crystal display according to the current time and a current one of the scheduled start times of the vehicle, obtaining means for obtaining a current calendar day and current time by accessing the clock means when the vehicle starts, wherein the obtaining means determines a current day of the week that corresponds to the obtained current calendar day and correlates the obtained current time with the determined current day of the week; start time storing means for storing a plurality of correlated current times in the storage means as the plurality of scheduled start times for a plurality of days of the week, respectively; and start time estimating means for estimating the start time of the vehicle by selecting one of the scheduled start times of one of the plurality of days of the week, wherein the one of the plurality of days of the week corresponds to the current day of the week, wherein the control means starts the heating unit driving control at a time that is different from the current scheduled start time by a predetermined time difference, and the time at which the heating unit is started is determined through a comparison between the current time and the current scheduled start time.