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:
Oct. 06, 2026
Filed:
Nov. 05, 2024
Electronics and Telecommunications Research Institute, Daejeon, KR;
Bong Kyu Kim, Daejeon, KR;
Jong Deog Kim, Daejeon, KR;
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon, KR;
Abstract
A photoacoustic sensing apparatus includes a light source that directs an optical signal toward an analyte, a photoacoustic sensor that receives an ultrasonic wave generated from the analyte and generates a photoacoustic sensor signal, and a signal processing device that controls the directing of the optical signal toward the analyte, and removes electromagnetic interference (EMI) noise from the photoacoustic sensor signal to generate a photoacoustic signal. A photoacoustic sensing method includes providing a first control signal to an optical switch connected to a light source to block or transmit the optical signal, generating a mixed signal that includes a photoacoustic signal and first EMI noise when the optical switch transmits the optical signal, and second EMI noise when the optical switch blocks the optical signal, and removing the EMI noise from the photoacoustic sensor signal based on the mixed signal and the second EMI noise.
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