发明名称 |
Timepiece having a divider chain with an adjustable division rate |
摘要 |
The timepiece includes a low frequency oscillator serving as time base and arranged to feed a first chain of frequency dividers having an adjustable division rate in order to display the time and a high frequency oscillator feeding a second chain of frequency dividers. During an imprecise period established by the first chain (3) reference pulses from the second chain (7) are counted thereby to establish a binary value (HF-DF) representing the amount of imprecision of the first chain in respect of the reference. This value is transferred into a memory in order to correct directly or indirectly the division rate of the first divider chain. There is thus obtained an oscillator having the stability of a high frequency oscillator but with energy consumption only slightly exceeding that of a low frequency oscillator.
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申请公布号 |
US4456386(A) |
申请公布日期 |
1984.06.26 |
申请号 |
US19810324497 |
申请日期 |
1981.11.24 |
申请人 |
SOCIETE SUISSE POUR L'INDUSTRIE HORLOGERE MANAGEMENT SERVICES S.A. |
发明人 |
DELLEA, MARIO |
分类号 |
G04G3/02;(IPC1-7):G04B17/12 |
主分类号 |
G04G3/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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