EP0838661A2
Expired / Lapsed
EP
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Map database apparatus
Assignee: Faurecia Clarion Electronics Co Ltd
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Filing: 1997-10-22
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Granted: —
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Expires: 2017-10-22
Abstract
Abstract A map database apparatus according to the present invention stores a plurality of sets of link string data provided separately to correspond to maps at different scales representing a road as a link string constituted by connecting a plurality of links each having a node at a front end and a rear end thereof. In the map database apparatus, a level correlation link number is provided as data that indicate a link string in a lower order level at a larger scale that is common to a link in a higher order level at a smaller scale, the level correlation link number having a level number of the higher order level and a link number of the common link in the higher order level.
Inventors
- 👤 Takashi Nomura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 19:28
CPC Classifications
G; G01; G01C; G01C21/00; G01C21/38; G01C21/3863; G01C21/387; G01C21/26; G01C21/34; G01C21/3446; G01C21/36; G01C21/3667; G01C21/367; G09; G09B; G09B29/00; G09B29/10; G09B29/106
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
117 words
A map database apparatus that stores a plurality of
sets of link string data provided separately to
correspond to maps at different scales representing a
road as a link string constituted by connecting a
plurality of links each having a node at a front end and
a rear end thereof and, wherein: a level correlation link number is provided as data
that indicate a link string in a lower order level at a
larger scale that is common to a link in a higher order
level at a smaller scale, said level correlation link
number having a level number of said higher order level
and a link number of said common link in said higher
order level.
Claim 2
Dependent Claim
29 words
A map database apparatus according to claim 1,
wherein: node information related to a node
connecting adjacent links in said link string data
is shared by said adjacent links.
Claim 3
Dependent Claim
124 words
A map database apparatus that stores node
connection data provided separately to correspond to
maps at different scales representing a road as a link
string constituted by connecting a plurality of links
each having a node at a front end and a rear end thereof,
said node connection data representing relationship of
connections between nodes, wherein: said node connection data includes a level
correlation link number as data that indicate a link
string in a lower order level at a larger scale that is
common to a link in a higher order level at a smaller
scale, said level correlation link number having a level
number of said higher order level and a link number of
said common link in said higher order level.
Claim 4
Dependent Claim
65 words
A map database apparatus according to claim 3,
further comprising: a setting device that sets a departure point and a
destination point on 36he map; a calculation device that calculates a recommended
route between the departure point and the destination
point set by said setting device based upon said node
connection data, wherein data of said calculated recommended route includes
said level correlation link number.
Claim 5
Dependent Claim
138 words
A map database apparatus according to claim 4, further
storing a plurality of sets of link string data provided
separately to correspond to maps at different scales, and
further comprising: a display device that displays a map based upon said
link string data; and a control device that controls said display device so
that said calculated recommended route is superimposed over
said displayed map and displayed, wherein: said data of the calculated recommended route include
said level correlation link number that corresponds to said
level correlation link number included in said link string
data as to corresponding link string; and said control device makes correspondence among said
data of the calculated recommended route and said link
string data by using said level correlation link number
when said calculated recommended route is superimposed over
said displayed map and displayed.
References Cited (Backward Citations)
No citation records indexed.
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