The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 05, 2008
Filed:
Sep. 24, 2003
Yoichi Nagata, Tokorozawa, JP;
Yoichi Nagata, Tokorozawa, JP;
Citizen Holdings Co., Ltd., Tokyo, JP;
Abstract
Using an oscillating unit () that can start oscillation with a low voltage, an oscillation signal (S) of the oscillating unit () is amplified via a waveform shaping unit (), and is fed to a boosting control unit (). A boosting unit () is caused to perform a boosting behavior by a boosting clock (Sa) with the same frequency as an oscillation frequency of the oscillation signal (S) just after the oscillating unit () starts. Thereby, a whole electronic timepiece () can be self-actuated, even if a generation voltage is low. Further, the oscillating unit () is constituted such that a operating current always becomes constant. Thereby, the electronic timepiece can be provided with an electricity-generating unit () such as a solar cell with a one-stage constitution having a low open voltage.