发明名称 |
Electronic timepiece having an adjustable rate of division and method for its manufacture |
摘要 |
An internal correction circuit is provided to correct the timepiece error caused by the crystal oscillator frequency changes. The timepiece operates by frequency dividing the oscillator frequency to obtain a predetermined operating frequency. The correction circuit is operated by the user on any initialization point, such as the start of any minute from a reference time source to generate a first input signal. The user at any following minute of the reference time source generates a second input signal.
|
申请公布号 |
US4154053(A) |
申请公布日期 |
1979.05.15 |
申请号 |
US19770789199 |
申请日期 |
1977.04.20 |
申请人 |
EBAUCHES S A |
发明人 |
CHETELAT, FERNAND;ROCHAT, DANIEL |
分类号 |
G04G3/02;G04G5/02;(IPC1-7):G04C3/00 |
主分类号 |
G04G3/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|