| 摘要 |
<P>PROBLEM TO BE SOLVED: To automatically display a local time even when moving by an aircraft while attaching or carrying a small-sized portable type electronic time piece. <P>SOLUTION: This electronic time piece is constituted to measure pressure of gas in an outside in every prescribed time interval, by a pressure measuring part 61. A CPU 51 determines the presence of the moving by the aircraft, based on a pressure difference of a difference between the this time measured pressure and the last measured pressure. The CPU 51 and a time information updating part 70 receive a GPS positioning radio wave from a GPS satellite with a prescribed reception interval to acquire time information, when the moving by the aircraft is determined, and update the time information. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
