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:
Jun. 16, 2020
Filed:
May. 15, 2019
Seiko Epson Corporation, Tokyo, JP;
Kentaro Seo, Minowa-machi, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A circuit device includes an oscillation signal generation circuit for generating an oscillation signal with an oscillation frequency set by frequency control data, and a processing circuit. The processing circuit includes a counter for performing a count process based on the oscillation signal, and a latch circuit for holding a count value of the counter based on a reference signal. The processing circuit performs a loop filter process on a phase comparison result based on output data of the latch circuit to output the frequency control data, holds information based on the phase comparison result when the holdover is detected, and outputs the frequency control data based on the information held, in a holdover period.