Patent ID: 8860641

Claim:
A control device comprising: a memory control device that controls access, for each of plural pixels corresponding to plural electro-optic elements whose optical state changes from a first state to a second state by voltage application a times each in a predetermined period as the unit, to a first memory that stores a present gray level value, a second memory that stores a gray level value to be displayed next, and a third memory that stores a counter value according to a remainder frequency of voltage applications; an acquisition device that acquires temperature information indicative of temperature; a remainder frequency setting device that, when rewriting of the gray level of a target pixel to be processed among the plural pixels starts in case when the temperature indicated by the temperature information acquired by the acquisition device is less than a threshold value, writes a value b (b<a) as the counter value stored in the third memory, for the target pixel, through the memory control device; a drive control device that, when the remainder frequency indicated by the counter value stored in the third memory is not zero for the target pixel, controls to apply a voltage to the target pixel; and a remainder frequency update device that, after passing the predetermined period, when a condition to select b-number of the predetermined periods from among a-number of the predetermined periods is met, decrements the counter value stored in the third memory through the memory control device.