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:
Apr. 13, 1982
Filed:
May. 23, 1980
Tsuneo Kuwabara, Tokyo, JP;
Kabushiki Kaisha Daini Seikosha, Tokyo, JP;
Abstract
Temperature compensating circuit for an electronic timepiece having two piezo electric resonators having different frequency-temperature characteristics. Two piezo electric resonators are a major resonator having smaller frequency variation rate in temperature variation and a subsidiary resonator having larger frequency variation rate in temperature variation. And also the temperature compensating circuit includes a variable counter for counting the output signal of the major oscillator having the major resonator, a gate time setting circuit controlled by both the outputs of subsidiary and the variable counter, and a counter for counting the output signal of the major oscillator. As a result, the temperature compensating circuit is able to improve the accuracy of the timepiece.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile