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. 14, 2020
Filed:
Nov. 16, 2018
Seiko Epson Corporation, Tokyo, JP;
Shinnosuke Kano, Minowa, JP;
Seiko Epson Corporation, , JP;
Abstract
A circuit device includes an A/D conversion circuit that performs an A/D conversion of a temperature detection voltage, a digital filter that performs digital filter processing of A/D output temperature detection data, a selector that selects A/D output temperature detection data during an activation period and selects filter output temperature detection data during a normal operation period after the activation period, a digital signal processing circuit that outputs frequency control data of an oscillation frequency based on selector output temperature detection data, and an oscillation signal generation circuit that generates an oscillation signal of an oscillation frequency set by frequency control data.