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:
Nov. 20, 2012
Filed:
Sep. 10, 2008
Yoshihisa Yamaguchi, Tokyo, JP;
Takashi Nakagawa, Tokyo, JP;
Toyoaki Kitano, Tokyo, JP;
Hideto Miyazaki, Tokyo, JP;
Tsutomu Matsubara, Tokyo, JP;
Katsuya Kawai, Tokyo, JP;
Yoshihisa Yamaguchi, Tokyo, JP;
Takashi Nakagawa, Tokyo, JP;
Toyoaki Kitano, Tokyo, JP;
Hideto Miyazaki, Tokyo, JP;
Tsutomu Matsubara, Tokyo, JP;
Katsuya Kawai, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A navigation device includes a map databasethat holds map data; a location and direction measurement unitthat measures the current location and direction of a vehicle; a route calculation unitthat, based on map data read from the map databasecalculates a route from the current location measured by the location and direction measurement unit to a destination; a camerathat captures video images ahead of the vehicle; a video image acquisition unitthat acquires the video images ahead of the vehicle captured by the camera; a road width acquisition unitthat, based on road width data included in the map data read from the map database, calculates the width of a road segment that enters last into an intersection to which the vehicle is to be guided from among road segments that make up the route calculated by the route calculation unit; a video image composition processing unitthat limits the length of a portion that indicates a turning direction of a route guide arrow to the road width calculated by the road width acquisition unit, and that composes the arrow onto the video images acquired by the video image acquisition unit in a superimposing manner; and a display unitthat displays the video image composed by the video image composition processing unit.