Back to results
US 7,009,914 B2Granted
Electronic clock
AssigneeCitizen Watch Co., Ltd.
InventorsHaruhiko Higuchi, Akiyoshi Murakami, Motoki Funahashi
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeCitizen Watch Co., Ltd.
InventorsHaruhiko Higuchi, Akiyoshi Murakami, Motoki Funahashi
Estimating the term…
In detecting power generation of an electronic timepiece having a conventional power generating unit, voltage output by the power generating unit is limited by output from a storage unit since the power generating unit and the storage means are connected when the power generation state is detected, and voltage equal to or larger than voltage output from the storage unit cannot be detected. An electronic timepiece is provided which can overcome the problem and can check an operation of the power generating unit securely irrespective of the state of the storage means. In an electronic timepiece driven by power stored from a power generating unit (1) into a storage unit (4), the electronic timepiece includes a power generation detecting unit (2) that detects a power generation state of the power generating unit (1) and a switch unit (7) that separates the power generating unit (1) and the storage unit (4) when the power generation state of the power generating unit (1) is detected. In this case, the switch (7) between the power generating unit (1) and the storage unit (4) is controlled to OFF so that the output from the power generating unit (1) cannot be limited by the output from the storage unit (4).
An electronic timepiece driven by electric energy generated by power generating means, the electric timepiece characterized by comprising storage means connected with the power generating means in parallel through an electronic switch, control means that controls the electronic switch, power generation detecting means that detects a power generation state of the power generating means, informing means that informs a detection result of the power generation detecting means to the outside, and an external operating member, wherein the external operating member is operated so that the power generation detecting means can go into action while a power generation detecting operation is performed under a condition that the electronic switch is turned off by the control means and the result is informed to the outside through the informing means.
An electronic timepiece driven by electric energy generated by power generating means, the electric timepiece characterized by comprising first storage means connected with the power generating means in parallel, second storage means connected with the power generating means in parallel through an electronic switch, control means that controls the electronic switch, power generation detecting means that detects a power generation state of the power generating means, informing means that informs a detection result of the power generation detecting means to the outside, and an external operating member, wherein the power generation detecting means can go into action through the external operating member while a power generation detecting operation is performed under a condition that the electronic switch is turned off by the control means and the result is sent to the outside through the informing means.
Dependencies are inferred from the claim text.