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. 12, 2004
Filed:
Dec. 18, 2000
Noboru Yamazaki, Iwaki, JP;
Alpine Electronics, Inc., Toyko, JP;
Abstract
There is provided a navigation system which enables efficient driving in a lane where advancing or leaving relative to other lanes of the road is restricted, such as for a carpool lane. Map data including road information regarding advancing/leaving points in a road having a carpool lane is read from a DVD and stored in a data buffer A route search processing section used the map data stored in the data buffer to perform route search processing, taking the availability of the carpool lane into consideration. When route guidance using the carpool lane is performed, a carpool lane guide section performs predetermined lane change guidance visually and/or orally, at a timing when the advancing/leaving point at which the route is to be changed approaches within a predetermined distance from the position of the vehicle.