Unlock instant, AI-driven research and patent intelligence for your innovation.

Map data distribution device, electronic device and map update system

A technology of map data and electronic equipment, applied in maps/plans/charts, instruments, road network navigators, etc., can solve the problems of increasing wireless distribution of differential data communication traffic, increasing differential data, etc.

Inactive Publication Date: 2015-11-18
DENSO CORP
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, updates that improve map accuracy for large areas may occur, for example
In this case, updating contents may increase the amount of difference data and also increase communication traffic for wirelessly distributing difference data

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Map data distribution device, electronic device and map update system
  • Map data distribution device, electronic device and map update system
  • Map data distribution device, electronic device and map update system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] Embodiments of the present disclosure will be described with reference to the drawings.

[0025] 1. Overall configuration

[0026] figure 1 is a block diagram showing the configuration of the map update system according to the embodiment. The map update system includes: a difference map distribution server 1 and a navigation device 2 (also called electronic device). The difference map distribution server 1 can communicate with a plurality of navigation devices 2 ( figure 1 A device is shown in ) for wireless communication. The navigation device 2 includes different types. Some are permanently mounted on the vehicle, while others are portable for use outside the vehicle.

[0027] The navigation device 2 stores map data and is able to perform various processing using the map data. The differential map distribution server 1 manages the latest map data. The map data contains difference data (ie, difference data items) representing updated information contained in the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A difference map distribution server wirelessly distributes update information contained in map data to a navigation apparatus that stores map data representing a road network using multiple links and nodes. Specifically, a difference information database stores difference data items to be categorized into multiple types of update information that enable update information about the same link or node occurred during the same period to be categorized into different types. A difference data extraction portion extracts a difference data item categorized into a type of update information to be distributed to a targeted navigation apparatus from the difference data items categorized into the multiple types of update information stored in the difference information database. A distribution controller wirelessly distributes the difference data item categorized into the extracted type of update information to the navigation apparatus via a network interface.

Description

technical field [0001] The present disclosure relates to a technique of distributing map data. Background technique [0002] [Patent Document 1] JP4684228B2 (US2007 / 282524A1) [0003] Conventionally, there is known an electronic device that stores map data and performs processing using the map data. For example, a navigation device executes map display processing, route search processing, and guidance processing. The map display processing displays a map image representing map data. The route search process searches roads represented by map data for a route corresponding to the search condition. The guidance process guides the vehicle from its current location to its destination. [0004] Generally, map data represent roads on a map on a link basis. Nodes correspond to connection points between links. Links and nodes represent road networks. Therefore, map data includes links and nodes as road elements for representing road networks. Map data contains various informa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/28G01C21/32G09B29/00
CPCG01C21/32G01C21/3896G01C21/3815G01C21/3859
Inventor 山岸信敏
Owner DENSO CORP