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. 18, 2022
Filed:
Jul. 30, 2020
Rohm Co., Ltd., Kyoto, JP;
Daisuke Kanbara, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
The present disclosure provides a high-precision dimming circuit. A dimming circuit () includes an input stage (IN) and an output stage (OUT). The input stage (IN) includes a plurality of amplifiers (AMPto AMP) which have non-inverted input terminals (+) thereof inputted with different dimming input voltages (DCDIM, DCDIMand VH), respectively, and inverted input terminals (−) thereof inputted with a common dimming output voltage (V). The output stage (OUT) is connected between respective output terminals of the plurality of amplifiers (AMPto AMP) and an output node of the diming output voltage (V), and outputs, among the plurality of dimming input voltages (DCDIM, DCDIMand VH) respectively inputted to the plurality of amplifiers (AMPto AMP), a lowest voltage as the dimming output voltage (V).