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:
Jan. 23, 2024
Filed:
May. 16, 2019
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
An abnormality detection deviceincludes: a vibration acquisition unitconfigured to acquire an acoustic signal generated during passage of a vehicle on a road; a frequency domain conversion unitconfigured to convert the acquired acoustic signal into a frequency domain signal; an unexpectedness determination unitconfigured to determine whether there is unexpectedness at each predetermined frequency using the frequency domain signal; and an abnormality determination unitconfigured to determine whether there is an abnormality in the road based on the number of frequencies at which it is determined that there is the unexpectedness.