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:
Feb. 04, 2025
Filed:
Aug. 01, 2023
Aac Technologies Pte. Ltd., Singapore, SG;
AAC Technologies Pte. Ltd., Singapore, SG;
Abstract
Provided is a capacitive sensing circuit and capacitive sensing method. The circuit includes a charge pump, a micro-electro-mechanical system (MEMS) chip, an analog signal modulator configured to perform analog signal modulation to an output signal of the MEMS chip and an output signal of the analog signal modulator, and a digital signal modulator configured to perform digital signal modulation to the output signal of the analog signal modulator, and output a modulated signal by a digital interface. By directly using the input signal of the MEMS chip and the output signal of the analog signal modulator as the input signal for analog modulation, the harmonic distortion is reduced.