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Map data, storage medium, and electronic apparatus

A technology of map data and link data, applied in the directions of maps/plans/charts, instruments, road network navigators, etc., can solve problems such as hindering access to required information, adverse effects on performance processing time, etc.

Inactive Publication Date: 2012-08-15
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, simply compiling the data prevents easy access to the required information and adversely affects the performance (including processing time) of processes such as route search

Method used

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  • Map data, storage medium, and electronic apparatus
  • Map data, storage medium, and electronic apparatus
  • Map data, storage medium, and electronic apparatus

Examples

Experimental program
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Embodiment Construction

[0030] Embodiments will be described with reference to the drawings.

[0031]

[0032] The map data of this embodiment is installed in a navigation system (navigation device) mounted on a vehicle. Such as figure 1 As shown in , the map data consists of groups of data files. The set of data files includes data files determined by subdividing the mapped area into a plurality of grids, and is hereinafter simply referred to as a set of grid-based data. The set of data files also includes an administrative data file that manages the grid-based data set.

[0033] A mesh is defined as the result of subdividing a rectangular area containing the mapped area. For each grid, the management data file stores information on whether there is grid-based data corresponding to the grid in the rectangular area. Grid-based data stores information about road networks in the grid (road information). Grid-based data is arranged in the map data in an order corresponding to the array of the gri...

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PUM

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Abstract

A map data is disclosed. The map data comprises a link data and a segment data. The link data describes a characteristic of each link in a group of links on a link-by-link basis. The group of links forms a road network. The segment data relates to each segment in a group of segments on a segment-by-segment basis. The segments are defined in units of link string. Each link string is a string of multiple links and corresponds to a main road. Each link string terminates at least at an intersection of the main road. The multiple links are a part of the group of links. The segment data of each segment describes information on a storage destination of the link data corresponding to the link string that forms the each segment.

Description

technical field [0001] The present disclosure relates to map data, a storage medium storing the map data, and an electronic device that performs processing using the map data. Background technique [0002] Conventionally, an electronic device that performs processing based on map data is called an in-vehicle device (navigation system), which displays a map image on a display device, calculates a guiding route to a destination point, or gives information about roads near the road being driven (For example, see Patent Document 1). [0003] Known examples of map data represent road networks based on connections between links, which are constituent parts of roads. This type of map data stores link data related to characteristics of links, such as road lengths, traffic rules, and the like on a link-by-link basis. [0004] Another known technique in the related art expresses road networks hierarchically according to levels of detail in order to express maps scaled at different s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/32
CPCG09B29/003G01C21/3878G01C21/34
Inventor 藤本英俊
Owner DENSO CORP
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