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:
Aug. 26, 2025
Filed:
Jun. 29, 2023
Nisshinbo Micro Devices Inc., Tokyo, JP;
Naoyuki Motoki, Fujimino, JP;
Nisshinbo Micro Devices Inc., Tokyo, JP;
Abstract
A microphone signal conversion module includes: a buffer circuit to output a second analog signal obtained by carrying out a level conversion with a first gain on a first analog signal input from a transducer; an analog-to-digital conversion circuit to convert a level of the second analog signal with a second gain to a digital value; and a control circuit to control the first gain and the second gain. The second analog signal is input to the control circuit, and the control circuit is configured to control a magnitude of each of the first gain and the second gain in mutually opposite directions based on a level of the second analog signal.