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. 27, 2024
Filed:
Dec. 01, 2020
Audio-technica Corporation, Tokyo, JP;
Akihito Tamamura, Fukui, JP;
Hideki Matsui, Fukui, JP;
AUDIO-TECHNICA CORPORATION, Tokyo, JP;
Abstract
A noise-cancelling headphoneincludes a headphone unit (), a baffle plate () to which the headphone unit is attached, an ear pad () attached to the baffle plate, a housing () attached to the baffle plate, a first microphone () that collects external noise, a first buffer amplifier unit () that performs impedance conversion to a signal from the first microphone and output the impedance-converted signal, a second microphone () that collects internal noise, a second buffer amplifier unit () that performs impedance conversion to a signal from the second microphone and outputs the impedance-converted signal, and a noise-cancelling signal generating circuit () that generates a noise-cancelling signal, based on a combined signal by combining the signal from the first buffer amplifier unit with the signal from the second buffer amplifier unit.