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. 28, 2025
Filed:
Feb. 20, 2023
Seiko Epson Corporation, Tokyo, JP;
Kentaro Seo, Shiojiri, JP;
SEIKO EPSON CORPORATION, , JP;
Abstract
An oscillator includes: a resonator element; an oscillation circuit configured to oscillate the resonator element and generate a clock signal; a first temperature sensor; a digital control circuit configured to operate based on the clock signal and output a control signal based on a temperature detected by the first temperature sensor; a temperature control circuit configured to output a control voltage based on the control signal; a temperature control element configured to control a temperature of the resonator element based on the control voltage; a second temperature sensor; and a second temperature sensor monitoring circuit including an analog circuit and configured to monitor a temperature detected by the second temperature sensor. The temperature control circuit stops a supply of the control voltage to the temperature control element when an abnormality in the temperatures of the first temperature sensor and the second temperature sensor is detected.