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:
Jun. 28, 2005
Filed:
Feb. 21, 2003
Akihiko Maruyama, Suwa, JP;
Akihiro Sawada, Matsumoto, JP;
Akihiko Maruyama, Suwa, JP;
Akihiro Sawada, Matsumoto, JP;
Seiko Epson Corporatioin, Tokyo, JP;
Abstract
An electronic timepiece without system failure at the time of transfer from the power-saving mode to the display mode is provided. A power-saving control circuitcontrols drive of a date dial displaying a date when updating a date display, which has been stopped in a power-saving mode, to a current date at the time of transfer from the power-saving mode to the display mode. The power-saving control circuitoutputs a date dial drive inhibiting signal, which prohibits drive of the date dial, to a date-updating control circuit, if a voltage VDD of a power source unit B is less than or equal to a low threshold voltage V1. It outputs a date dial deceleration driving signal, which drives a date dialwith a predetermined speed slower than a normal update speed when transferring to the display mode, to a date-updating control circuit, if a source voltage VDD is equal to or less than a high threshold voltage V2.