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. 16, 2024
Filed:
Oct. 18, 2019
Sony Semiconductor Solutions Corporation, Kanagawa, JP;
Takeshi Yuwaki, Kagoshima, JP;
Mitsushi Tabata, Kanagawa, JP;
Sony Semiconductor Solutions Corporation, Kanagawa, JP;
Abstract
A detection circuit () according to the present disclosure includes a multiple-input one-output operational amplifier (). The operational amplifier () includes a first transistor group () and a second transistor (). The first transistor group () includes plural transistors connected in parallel such that operating voltages for plural light emitting elements () are inputted individually to gates of the plural transistors, the gates being non-negated input terminals of the operational amplifier. The second transistor () cooperates with the first transistor group () to form a differential configuration and has a gate which is a negated input terminal of the operational amplifier and to which an output from an output terminal is negatively fed back.