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. 05, 2016

Filed:

Nov. 05, 2014
Applicant:

Seiko Epson Corporation, Tokyo, JP;

Inventor:

Atsushi Kiyohara, Chino, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B 5/04 (2006.01); H03L 7/00 (2006.01); H03B 5/36 (2006.01);
U.S. Cl.
CPC ...
H03L 7/00 (2013.01); H03B 5/04 (2013.01); H03B 5/362 (2013.01); H03B 5/368 (2013.01);
Abstract

An oscillation circuit includes a circuit for frequency adjustment, a variable capacity control circuit in which a voltage to be output therefrom is controlled with either a voltage which is input from a terminal Tor a voltage other than the voltage which is input from the terminal T, a circuit for oscillation which is provided with a varactor and to which a signal from the circuit for frequency adjustment and a signal from the variable capacity control circuit are input, and a three-terminal switch which outputs the voltage which is input from the terminal Tto either the circuit for frequency adjustment or the variable capacity control circuit.


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