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:
Sep. 13, 1983
Filed:
Jul. 31, 1981
Suguru Yamazaki, Suwa, JP;
Kabushiki Kaisha Suwa Seikosha, Tokyo, JP;
Abstract
A power circuit for an electronic timepiece having a liquid crystal display includes a voltage regulation circuit, a voltage reduction circuit and a voltage booster circuit. In normal operation the voltage reduction circuit operates to drive the timekeeping circuits and extend battery life. When battery voltage drops due to heavy load, such as an alarm or lamp, the voltage regulation circuit and booster circuits operate to drive the timekeeping circuits and liquid crystal display respectively. The same transistors operate in the voltage reduction and booster circuits.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile