发明授权
- 专利标题: Charging type electronic timepiece
- 专利标题(中): 充电式电子表
-
申请号: US116907申请日: 1998-07-17
-
公开(公告)号: US6144621A公开(公告)日: 2000-11-07
- 发明人: Masahiro Sase
- 申请人: Masahiro Sase
- 申请人地址: JPX Tokyo
- 专利权人: Citizen Watch Co., Ltd.
- 当前专利权人: Citizen Watch Co., Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX9-194048 19970718
- 主分类号: G04C3/00
- IPC分类号: G04C3/00 ; G01R31/36 ; G04C10/04 ; G04G19/00 ; G04G19/08 ; G04B1/00
摘要:
A charging type electronic timepiece of the present invention is configured such that a return to a correct time display is achieved after the recovery of the voltage on the basis of time information held by a circuit in case the power-supply voltage has dropped to such an extent as to prohibit a motor drive without causing any interruption of oscillation (a stop of issue of reference signals) and such that in case the extent of the voltage drop is such as to cause an interruption of oscillation, a stop alarm display is given first after the voltage recovery through a storage of the fact of the interruption of the circuit since correct time information is no longer expected to be held by the circuit. This allows the charging type electronic timepiece to minimize the inconvenience that the user must perform a time adjustment and to securely inform the user of a true necessity of time adjustment through a display of its information. It is therefore possible to provide a charging type electronic timepiece ensuring remarkable conveniences and reliability for the user.
公开/授权文献
- USD427440S Picture frame 公开/授权日:2000-07-04
信息查询