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. 24, 2018
Filed:
Jun. 03, 2016
Seiko Epson Corporation, Tokyo, JP;
Sachiyuki Abe, Hara-mura, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A power supply voltage detection circuit can detect the power supply voltage obtained by stabilizing a power supply voltage supplied from outside and also the magnitude of the power supply voltage before being stabilized. This power supply voltage detection circuit includes a selection circuit that selects one power supply potential from among a plurality of power supply potentials including a first power supply potential supplied from outside and a second power supply potential obtained by stabilizing the first power supply potential, a variable voltage dividing circuit that divides the voltage between the power supply potential selected by the selection circuit and a reference potential by a set division ratio, a comparison voltage generation circuit that generates a comparison voltage based on a reference voltage, and a comparator that compares the voltage divided by the variable voltage dividing circuit with the comparison voltage and outputs a signal representing a comparison result.