Patent ID: 7813225

Claim:
A time adjustment device comprising: a reception unit that receives a prescribed signal transmitted by a base station, the prescribed signal containing future time information, time difference information and base station identification information; a reception time information generating unit that generates reception time information based on the future time information and the time difference information; a time difference information storage unit that stores the time difference information; a display time information adjustment unit that adjusts the time information displayed by a time information display unit; an adjustment time information generating unit that generates adjustment time information, for use by the display time information adjustment unit, based on the reception time information and at least processing time information for the time adjustment device; a base station identification information acquisition unit that gets the base station identification information contained in the prescribed signal; and a time adjustment execution determination unit that decides based on the base station identification information whether the display time information adjustment unit adjusts the displayed time information using the adjustment time information.