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:
Jun. 02, 2026
Filed:
Jul. 26, 2024
Denso Corporation, Kariya-city, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Mirise Technologies Corporation, Nisshin, JP;
Takashi Takazawa, Nisshin, JP;
Shuhei Shimanoe, Nisshin, JP;
Tomoki Tanemura, Nisshin, JP;
Masaaki Kawauchi, Nisshin, JP;
DENSO CORPORATION, Kariya-city, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
MIRISE Technologies Corporation, Nisshin, JP;
Abstract
A microphone device has plural microphones. A distance between two of the microphones is d. A signal-to-noise ratio of each of the microphones is MicSNR. A speed of sound is c. A frequency to be processed is f. An azimuth angle of an operator's seat relative to the microphones is θ. A minimum azimuth angle to be detected is Δθ. A voltage amplitude of an output signal of the microphone, with reference to a voltage output when a sound of 94 dBA is received, is A. A differential voltage effective ratio EDER is defined by a formula where Δτ=d/c {sin(θ+Δθ)−sin θ}, and the distance d is set to a value that satisfies d<c/2f and EDER>0.7.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile