| 摘要 |
<P>PROBLEM TO BE SOLVED: To permit a radio wave correction timepiece to securely detect the timing of normal-minute (zero second of each minute) of the standard time from the standard radio wave, and to precisely correct the second. <P>SOLUTION: The normal-minute detection method by the standard radio wave includes a step for receiving the standard radio wave containing standard time information; a step (step 6) for detecting, from the received signal of the standard radio wave, a signal train in which the signals of the pulse width of about 200 milliseconds, of about 200 milliseconds, and of about 500 milliseconds or about 800 milliseconds, are serially arranged in this order, at the interval of about one second; and a step (step 7) for determining, as the signal of the standard time indicating the zero second each minute, the signal at the rear part of the two signals of the pulse width of about 200 milliseconds, when the signal train is detected. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
