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. 08, 2014
Filed:
Aug. 07, 2012
Kaoru Kobayashi, Saitama, JP;
Kaoru Kobayashi, Saitama, JP;
Nihon Dempa Kogyo Co., Ltd., Tokyo, JP;
Abstract
An oscillation device for reducing memory capacity includes a frequency difference detecting unit and a compensation value obtaining unit. When oscillation frequencies of the first and second oscillation circuits are respectively fand f, and oscillation frequencies of the first and second oscillation circuits at a reference temperature are respectively fand f, the frequency difference detecting unit determines a difference corresponding value x corresponding to a difference value between a value corresponding to a difference between fand f, and a value corresponding to a difference between fand f. The compensation value obtaining unit obtains a frequency compensation value of fresulting from ambient temperature different from reference temperature based on the difference corresponding value x, and calculates the frequency compensation value of fby calculating n-order polynomial for X being a value corresponding to x/k, where k is a divide coefficient specific to a device.