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:
Sep. 23, 2008
Filed:
Nov. 01, 2005
Yoshitaka Atarashi, Ibaraki, JP;
Yukihiro Kawamata, Ibaraki, JP;
Mariko Okude, Ibaraki, JP;
Yukio Miyazaki, Ibaraki, JP;
Yoshitaka Atarashi, Ibaraki, JP;
Yukihiro Kawamata, Ibaraki, JP;
Mariko Okude, Ibaraki, JP;
Yukio Miyazaki, Ibaraki, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The present invention provides, in a car navigation system, a unit of notifying a user of the update contents of map data prior to the downloading of the map data. A vehicle-mounted terminal sets a difference update area in accordance with a selection made by a user and sends a difference update request to a map updating server. If an update mode in this case is 'update after outline display', the vehicle-mounted terminal downloads an outline update map from the map updating server. The outline update map is displayed on a display unit of a display. Here, when a download start button displayed on the display unit is depressed, the vehicle-mounted terminal downloads a detailed update map from the map updating server. The detailed update map is then displayed on the display unit of the display. Furthermore, an updating process is performed on the map data stored in a terminal DB.