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:
Mar. 25, 2014
Filed:
Jul. 18, 2012
Toshiaki Nakayama, Miyoshi, JP;
Toshiaki Nakayama, Miyoshi, JP;
DENSO Corporation, Kariya, JP;
Abstract
Notice sounds having different sound qualities are generated simultaneously outside a vehicle via an in-vehicle parametric speaker having a first directionality and an in-vehicle dynamic speaker using a vehicular horn unit having a second directionality having a broader emission angle as compared with the first directionality. Both the notice sound via the parametric speaker and the notice sound via the dynamic speaker reach the ears of a person outside the vehicle in different sound pressures based on a difference between the first directionality and the second directionality. A sound tone of a notice sound actually heard by the person outside the vehicle varies according to a travel direction and travel speed of the vehicle.