AUTOMATIC TIME SETTING APPARATUS MAKING USE OF BROADCAST RADIO WAVES

PROBLEM TO BE SOLVED: To eliminate a need of a time-data detection circuit which is constituted complicatedly and to make automatically settable the time even in a state that a day of the week and the time are not known in an automatic time setting apparatus which makes use of broadcast radio waves....

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Bibliographische Detailangaben
1. Verfasser:	MIYABE SEIJI
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY ELECTRONIC TIME-PIECES HOROLOGY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION RADIO-CONTROLLED TIME-PIECES
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To eliminate a need of a time-data detection circuit which is constituted complicatedly and to make automatically settable the time even in a state that a day of the week and the time are not known in an automatic time setting apparatus which makes use of broadcast radio waves. SOLUTION: A time signal which is outputted in the reference time of one day by the broadcast radio waves is used. A time signal which is outputted in a prescribed time on a specific day in addition to the time signal of the reference time is used. When the time signal is detected after a prescribed time since one time signal was detected (# to #3), a present time is judged to be the prescribed time on the specific day of the week (#4). When the time signal is not detected, whether the time signal is detected or not is investigated after a prescribed time elapses (#4, #6). The time is set according to the detection state of the time signal (#7 to #10). Thereby, even in a state that the day of the week and the time are not known, the time can be set automatically.