Time measurement device

A time measurement device having a time measurement function and displaying an image on a liquid crystal panel by writing image data to the liquid crystal panel, the time measurement device comprising:

• a polarity control unit configured to reverse a polarity of an AC voltage applied to the liquid crystal panel at a constant polarity reversal cycle;
• an event reception unit configured to receive an event that has a possibility to cause an update of a display on the liquid crystal panel;
• an event holding unit configured to hold the event received by the event reception unit in periods of a certain first standby operation time immediately before the polarity of the AC voltage is reversed and a certain second standby operation time immediately after the polarity of the AC voltage is reversed;
• a display update determination unit configured to determine whether the holding event requires updating of the display on the liquid crystal panel after the periods of the first standby operation time and the second standby operation time elapse;
• and
• an image data output control unit configured to write, to the liquid crystal panel, image data of the event for which the updating of the display on the liquid crystal panel is determined to be required, wherein
• the first standby operation time includes one unit of time for writing the image data to the liquid crystal panel and an image data writing inhibition time immediately before the polarity of the AC voltage is reversed, and
• the second standby operation time includes an image data writing inhibition time immediately after the polarity of the AC voltage is reversed.