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:
Oct. 20, 2015
Filed:
Mar. 16, 2012
Takahisa Aoyagi, Tokyo, JP;
Asako Omote, Tokyo, JP;
Youichi Kato, Tokyo, JP;
Noritaka Kokido, Tokyo, JP;
Satoru Inoue, Tokyo, JP;
Takahisa Aoyagi, Tokyo, JP;
Asako Omote, Tokyo, JP;
Youichi Kato, Tokyo, JP;
Noritaka Kokido, Tokyo, JP;
Satoru Inoue, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
A notification sound control unit of an approaching vehicle audible system includes a first rotation speed calculation section that calculates a first rotation speed, based on an accelerator opening degree signal of an electric vehicle, a second rotation speed calculation section that calculates a second rotation speed, based on a vehicle speed signal of the electric vehicle, a rotation speed synthesis section that synthesizes the first rotation speed and the second rotation speed, a virtual engine rotation speed calculation section that applies filtering processing to a synthesis rotation speed synthesized by the rotation speed synthesis section so as to calculate a virtual engine rotation speed, and a notification sound signal generation processing section that changes a pitch and a volume of a phoneme signal outputted from a phoneme, based on the virtual engine rotation speed, so as to generate a notification sound signal.