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:
Mar. 25, 2014
Filed:
Jan. 07, 2011
Hiroyoshi Masuda, Nagoya, JP;
Kensuke Takeuchi, Okazaki, JP;
Norihisa Fujikawa, Okazaki, JP;
Koichi Iwatsuki, Okazaki, JP;
Yoshihiro Tanabe, Kota, JP;
Hiroyoshi Masuda, Nagoya, JP;
Kensuke Takeuchi, Okazaki, JP;
Norihisa Fujikawa, Okazaki, JP;
Koichi Iwatsuki, Okazaki, JP;
Yoshihiro Tanabe, Kota, JP;
Aisin AW Co., Ltd., Anjo, JP;
Abstract
At the first data access by a navigation unit to a recording medium that records updating right information necessary for updating map data in a rewritable data area in which map data are recorded, the updating right information is read from the data area and is deleted from the data area, and a map updating due date created based on the read updating right information is written in a memory of the navigation unit together with the medium identification information read from a non-rewritable management area.