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. 13, 2017
Filed:
Mar. 10, 2014
Nissan Motor Co., Ltd., Yokohama-Shi, Kanagawa, JP;
Takahiko Oki, Kanagawa, JP;
Hidekazu Nishiuchi, Kanagawa, JP;
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Abstract
A traffic light detecting device includes an image capturing unit configured to repeatedly capture images in a travelling direction of a vehicle to obtain a series of multiple images and a traffic light detecting unit configured to detect traffic lights from the images. The traffic light detecting unit detects phase information of an electric power system used in an area around the vehicle including the traffic lights from a cycle of a luminance variation in the series of multiple images and extracts from the images a synchronized pixel with a luminance which varies in synchronization with an alternating current cycle of electric power supplied to the traffic light by using the phase information of the electric power system. The traffic light detecting device judges from the synchronized pixel whether or not the traffic light is present.