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:
Jan. 14, 2020
Filed:
Oct. 06, 2015
Toyota Mapmaster Incorporated, Nagoya-shi, Aichi, JP;
Micware Co., Ltd., Kobe-shi, Hyogo, JP;
Takahiro Miwa, Nagoya, JP;
Ayumu Shingu, Kobe, JP;
Abstract
A map update system, a navigation device, and a server device is provided. The map update system updates map data of the navigation device based on map data stored by the server device, the map data includes section data corresponding to each section of a navigation map divided into multiple sections and management data designating the section data to be referenced when rendering, the server device receives generation information from the navigation device of map data being currently referenced by the navigation device and creates difference data between map data of a generation corresponding to the received generation information and map data of a newest generation, the navigation device creates updated management data and updated section data by updating management data and section data corresponding to the difference data and writes respectively updated data on different areas that are different from areas on which respective pre-update data area stored.