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:
Jan. 05, 2016
Filed:
Dec. 05, 2013
Nihon Dempa Kogyo Co., Ltd., Tokyo, JP;
Tomoya Yorita, Saitama, JP;
NIHON DEMPA KOGYO CO., LTD., Tokyo, JP;
Abstract
An oscillation apparatus corrects a setting value for an output frequency based on a detection result of an environmental temperature. The oscillation apparatus includes a first crystal unit, a second crystal unit, an integrated circuit chip, and a container. The first crystal unit includes first excitation electrodes on respective surfaces of a crystal element. The second crystal unit includes second excitation electrodes on respective surfaces of a crystal element. The integrated circuit chip includes a first oscillation circuit, a second oscillation circuit, and a correction unit. The container houses the first crystal unit, the second crystal unit, and the integrated circuit chip. Assuming that distances from a gravity center position of the integrated circuit chip to respective gravity center positions of the first excitation electrodes and the second excitation electrodes in plan view are denoted by D1 and D2, D1/D2 is within a predetermined range close to 1.