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:
Jul. 17, 2018
Filed:
Mar. 14, 2016
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Assignee:
SEIKO EPSON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B 5/32 (2006.01); H03L 1/04 (2006.01); H03L 1/02 (2006.01); H03B 5/36 (2006.01); H03L 1/00 (2006.01);
U.S. Cl.
CPC ...
H03L 1/04 (2013.01); H03B 5/32 (2013.01); H03B 5/36 (2013.01); H03L 1/00 (2013.01); H03L 1/023 (2013.01); H03L 1/026 (2013.01); H03L 1/028 (2013.01);
Abstract
An oscillator includes a resonator; an oscillation circuit which oscillates the resonator; a D/A conversion circuit which receives digital data for controlling a frequency of the oscillation circuit; a first temperature sensor; and a temperature compensation circuit which is connected to the first temperature sensor. The oscillation circuit includes a first variable capacitor element and a second variable capacitor element. An output voltage of the D/A conversion circuit is applied to the first variable capacitor element. An output voltage of the temperature compensation circuit is applied to the second variable capacitor element.