초록 ▼

The invention concerns an electronic time-piece having a barometric indicator, indicating, for example, barometric trends. The time-piece comprises, in addition to the reference oscillator for determining the time, a measurement oscillator associated with a transducer exposed to the ambient air. A c

The invention concerns an electronic time-piece having a barometric indicator, indicating, for example, barometric trends. The time-piece comprises, in addition to the reference oscillator for determining the time, a measurement oscillator associated with a transducer exposed to the ambient air. A counter measures the variations of the frequency of the measurement oscillator due to the fluctuations of atmospheric pressure, and an electronic circuit controls, from predetermined detection thresholds, the indication of barometric trend on the display device of the time-piece.

대표청구항 ▼

An electronic timepiece with a barometric value indicator, comprising: a reference resonator; a first electronic circuit coupled with said reference resonator for delivering reference frequency signals, sychronization signals, and time signals; a display device receiving said time signals for indica

An electronic timepiece with a barometric value indicator, comprising: a reference resonator; a first electronic circuit coupled with said reference resonator for delivering reference frequency signals, sychronization signals, and time signals; a display device receiving said time signals for indicating the time; a measurement transducer exposed to the ambient air generating an output signal; and a second electronic circuit coupled with said measurement transducer, said display device, and said first electronic circuit, said second electronic circuit having means for delivering measuring frequency signals in response to said transducer output signal, and further having means for receiving said synchronization signals for periodically determining the variation of said measuring frequency relative to said reference frequency signals, said variation being caused by the barometric influence on said measurement transducer, said second electronic circuit controlling the display of the barometric value on said display device corresponding to said measuring frequency variation.