发明名称 |
Temperature detector circuit for timepiece |
摘要 |
A circuit for compensation of timekeeping inaccuracies induced by ambient temperature variations. A bridge circuit having a temperature sensitive resistive element in one branch and a resistance of programmed variation in the other branch outputs a changing unbalanced voltage to drive a comparator. A change in polarity of the comparator output detects the ambient temperature and causes a counter controlling the programmed resistance to output signals to a timekeeping regulation circuit whereby timekeeping is made accurate. Initial corrections are made in the programmed resistance branch to adjust for off-design performance of the vibrator in the timepiece oscillator.
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申请公布号 |
US4465379(A) |
申请公布日期 |
1984.08.14 |
申请号 |
US19800152448 |
申请日期 |
1980.05.22 |
申请人 |
KABUSHIKI KAISHA SUWA SEIKOSHA |
发明人 |
MISAWA, TOSHIYUKI;ASAKAWA, TATSUSHI |
分类号 |
G04F5/06;H03L1/02;(IPC1-7):G04B17/12;H03L1/00 |
主分类号 |
G04F5/06 |
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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