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. 15, 2023
Filed:
May. 21, 2019
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Kazunori Kobayashi, Tokyo, JP;
Shoichiro Saito, Tokyo, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
In-car communication and hands-free talking with good sound quality are realized. An echo cancelation apparatus () is for use in a vehicle in which microphones (M, M) and loudspeakers (S, S) are disposed in acoustic regions (). A loudspeaker (S) and a microphone (M) are disposed in a first acoustic region (), and a loudspeaker (S) and a microphone (M) are disposed in a second acoustic region (). An acoustic signal picked up by the microphone (M) disposed in the first acoustic region () is emitted from the loudspeaker (S) disposed in the second acoustic region (). An acoustic signal picked up by the microphone (M) disposed in the second acoustic region () is emitted from the loudspeaker (S) disposed in the first acoustic region (). The microphone (M) is designed to hardly collect a sound emitted from the loudspeaker (S).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile