EP0816802A2
Expired / Lapsed
EP
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Navigation system
Assignee: Mitsubishi Electric Corp
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Filing: 1996-12-10
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Granted: —
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Expires: 2016-12-10
Abstract
Abstract A navigation-information transmitting system has a map/road-information data base, an additional-information data base, a local-information data base, a program data base and a wide-area-information data base. The navigation-information transmitting system supplies information and programs stored in the data bases to a navigation apparatus.
Inventors
- 👤 Tadashi Sakamoto
- 👤 Hiroki Takita
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 17:37
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/09; G08G1/0962; G08G1/0968; G08G1/096805; G08G1/096827; G01; G01C; G01C21/00; G01C21/26
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
155 words
A navigation system comprising: a navigation apparatus (1) having a transmitter/receiver
(12) for transmitting information accompanying requests and
receiving information, an operation unit (17) for inputting a
request made by the user, a display unit (18) for displaying
a video image of a map and a control unit (13) for
controlling transmission and reception and controlling a
display operation; and a navigation-information transmitting system (2) for
providing various services according to requests from said
navigation apparatus (1), wherein said navigation-information transmitting system
(2) comprises: a program data base (44) for storing programs; a map/road-information data base (41) for storing
information including map information and road information;
and supply means (30) for supplying one of a program stored
in said program data base (44) and traffic information or
supplying a program stored in said program data base (44) and
traffic information to said navigation apparatus (1) in
response to a request from said navigation apparatus (1).
Claim 2
Dependent Claim
39 words
A navigation system according to claim 1, wherein said supply means (30) supplies map information
stored in said map/road-information data base (41) and a map
drawing program stored in said program data base (44) to said
navigation apparatus (1).
Claim 3
Dependent Claim
50 words
A navigation system according to claim 1, wherein said supply means (30) retrieves road
information of points to be passed through from said
map/road-information data base (41) for use in an operation
to search for an optimum guidance route and supplies said
retrieved road information to said navigation apparatus (1).
Claim 4
Dependent Claim
46 words
A navigation system according to claim 3, wherein said navigation-information transmitting system
(2) includes a wide-area-information data base (45) for
storing wide-area traffic information and wherein said supply
means (30) supplies traffic jam information stored in said
wide-area-information data base (45) to said navigation
apparatus (1).
Claim 5
Dependent Claim
36 words
A navigation system according to claim 3 or 4, wherein said supply means (30) supplies a route
searching program and a route-search-result displaying
program stored in said program data base (44) to said
navigation apparatus (1).
Claim 6
Dependent Claim
64 words
A navigation system according to claim 1, wherein said navigation-information transmitting system
(2) includes route searching means (30) for carrying out an
operation to search for an optimum guidance route in response
to a request from said navigation apparatus (1) and wherein
said supply means (30) supplies a result of said operation to
search for an optimum guidance route to said navigation
apparatus (1).
Claim 7
Dependent Claim
29 words
A navigation system according to claim 6, wherein said supply means (30) supplies a
route-search-result displaying program stored in said program
data base (44) to said navigation apparatus (1).
Claim 8
Dependent Claim
34 words
A navigation system according to claim 6, wherein said navigation-information transmitting system
(2) has conversion means (30) for converting a result of said
operation to search for an optimum guidance route into
bit-map data.
Claim 9
Dependent Claim
58 words
A navigation system according to any one of claims 6 to
8, wherein said navigation-information transmitting system
(2) has a local-information data base (43) for storing local
traffic jam information and wherein said route searching
means (30) carries out an operation to search for an optimum
guidance route by also taking said local traffic jam
information into consideration.
Claim 10
Dependent Claim
48 words
A navigation system according to claim 1, wherein said navigation-information transmitting system
(2) has an additional-information data base (42) for storing
additional information other than traffic information and
wherein said supply means (30) supplies additional
information stored in said additional-information data base
(42) to said navigation apparatus (1).
Claim 11
Dependent Claim
67 words
A navigation system according to claim 10, wherein said supply means (30) retrieves an information
searching program for carrying out an operation to search
said additional information for information desired by the
user and an information displaying program for displaying a
result of said operation from said program data base (44) and
transmits said retrieved information searching program and
information displaying program to said navigation apparatus
(1).
Claim 12
Dependent Claim
57 words
A navigation system according to claim 10, wherein said navigation-information transmitting system
(2) has search means (30) for carrying out an operation to
search said additional information stored in said
additional-information data base (42) for information desired
by the user and wherein said supply means (30) supplies
information desired by the user to said navigation apparatus
(1).
Claim 13
Dependent Claim
29 words
A navigation system according to claim 12, wherein said supply means (30) supplies said information
displaying program stored in said program data base (44) to
said navigation apparatus (1).
Claim 14
Dependent Claim
30 words
A navigation system according to claim 12, wherein said navigation-information transmitting system
(2) has conversion means (30) for converting a search result
by said search means (30) into bit-map data.
Claim 15
Dependent Claim
57 words
A navigation system according to any one of claims 10 to
14, wherein said additional-information data base (42) is
used for further storing communication addresses of
facilities shown in a map in addition to said additional
information and wherein said supply means (30) supplies said
communication addresses to said navigation apparatus (1)
along with said additional information.
References Cited (Backward Citations)
JPS62224898A
Cited
JPS6394400A
Cited
JPH087527B2
Cited
JPH05240652A
Cited
JPH06242722A
Cited
JPH07209005A
Cited
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