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.

Date of Patent:
Apr. 28, 2015

Filed:

Apr. 29, 2013
Applicant:

Nihon Dempa Kogyo Co., Ltd., Tokyo, JP;

Inventor:

Tomoya Yorita, Saitama, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03L 1/02 (2006.01); H03K 3/011 (2006.01);
U.S. Cl.
CPC ...
H03L 1/02 (2013.01); H03K 3/011 (2013.01); H03L 1/022 (2013.01);
Abstract

An oscillator outputs a control signal to suppress an influence caused by temperature characteristic of fbased on a differential signal corresponding to difference between an oscillation output fof a first oscillator circuit and an oscillation output fof a second oscillator circuit treated as a temperature detection value. A switching unit switches between a first state and a second state. The first state is a state where a first connecting end and a second connecting end are connected to a storage unit for access from an external computer to the storage unit. The second state is a state where the first connecting end and the second connecting end are connected to a first signal path and a second signal path such that the respective fand fare retrieved from the first connecting end and the second connecting end to an external frequency measuring unit.


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