Charging type electronic timepiece

Details Charging type electronic timepiece Charging type electronic timepiece

1998-07-17

2000-11-07

Roskoski, Bernard

Horology: time measuring systems or devices

Power supply details

Electrical

368205, G04B 100

Patent

active

061446211

ABSTRACT:
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.

REFERENCES:
patent: 4785436 (1988-11-01), Sase
patent: 5740132 (1998-04-01), Ohshima et al.
patent: 5978318 (1999-11-01), Kawaguchi et al.

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