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:
Feb. 27, 2007
Filed:
Mar. 16, 2004
Kenichi Kawaguchi, Tokyo, JP;
Yuichiro Ichiyama, Tokyo, JP;
Kenichi Kawaguchi, Tokyo, JP;
Yuichiro Ichiyama, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A navigation device in that on each of fixed information having a long update period and update information having a short update period which compose the user service information stored in a navigation device whether or not the user service information is newest, is determined, and the newest information corresponding to at least one of the fixed information and the update information which are determined to be not newest by the determination is acquired from an information supply server, thus, in almost all cases, only the update information is acquired from the information supply server, so it acquires the desired user service information in a short time, and therefore, low communication expenses.