Title:
【発明の名称】車載用地図データベース装置
Document Type and Number:
Japanese Patent JP2826079
Kind Code:
B2
Abstract:
The present invention is applied to a map database apparatus, where: a road is represented as a link string in which a plurality of links, each of which has nodes at both ends thereof, are connected; and a plurality of link string data, each of which includes node information relating to the node and is respectively provided for each of levels which correspond to different scale maps with regard to an identical link string, are stored. And a link of a lower level which has a larger scale, the link being common to a link of a upper level which has a smaller scale, has a link identifying data which is common to a link identifying data of the common link of the upper level.
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Inventors:
NOMURA TAKASHI
Application Number:
JP9732095A
Publication Date:
November 18, 1998
Filing Date:
April 21, 1995
Export Citation:
Assignee:
ZANAUI INFUOMATEIKUSU KK
International Classes:
G09B29/00; G01C21/00; G01C21/32; G06F17/30; G08G1/0969; (IPC1-7): G09B29/00; G01C21/00; G06F17/30; G08G1/0969
Domestic Patent References:
| JP8202729A | ||||
| JP8233589A | ||||
| JP868648A | ||||
| JP869247A | ||||
| JP7190788A |
Attorney, Agent or Firm:
Fuyuki Nagai