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Patent US6233520B1 successfully refreshed from Google Patents.
US6233520B1
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Map data access method for navigation and navigation system
Assignee: Denso Ten Ltd
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Filing: 1999-02-12
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Granted: 2001-05-15
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Expires: 2019-02-12
Abstract
Abstract There is provided a map data access method and device capable of reading out from a recording medium the map data requested by a navigation system and providing them to the system whether C language, etc. or JAVA (trademark), etc. is employed to constitute a processing program on the navigation system side. In the recording medium, the map data and a reading method of the data are recorded in pairs in a map data section and a method section, respectively. When a navigation function section requests the map data, a data access section reads out desired data in a method (program) read out from the method section according to a requested application programming interface (API). The data read out are supplied as a byte array object to the navigation function section.
Inventors
- 👤 Toru Ito
- 👤 Akimasa Nanba
- 👤 Hidetoshi Fujimoto
- 👤 Hiroshi Takeuchi
- 👤 Fumihiko Matsumura
- 👤 Nobuyuki Nakano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:24
CPC Classifications
G; G01; G01C; G01C21/00; G01C21/38; G01C21/3863; G01C21/387; G01C21/3878; Y; Y10; Y10S; Y10S707/00; Y10S707/99931
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
76 words
A map data access method for navigation which reads out map data for navigation from a recording medium and outputs them to a navigation system, said method comprising the steps of: (a) requesting map data by outputting a predetermined application programming interface from said navigation system; and (b) reading out from said recording medium map data designated by said application programming interface and returning the map data as a byte array object to said navigation system.
Claim 2
Dependent Claim
76 words
A map data access method for navigation which reads out map data for navigation from a recording medium and outputs them to a navigation system, said method comprising the steps of: (a) requesting map data by outputting a predetermined application programming interface from said navigation system; and (b) reading out from said recording medium map data designated by said application programming interface and returning the map data as a byte array object to said navigation system.
Claim 3
Dependent Claim
45 words
The method according to claim 1 , wherein map data for display are requested at said step (a), and map data in a range covering a requested range are read out from said recording medium and returned to said navigation system at said step (b).
Claim 4
Dependent Claim
46 words
The method according to claim 1 , wherein map data for position computation are requested at said step (a), and map data in a range covering a requested range are read out from said recording medium and returned to said navigation system at said step (b).
Claim 5
Dependent Claim
44 words
The method according to claim 1 , wherein guide map data are requested at said step (a), and map data in a range covering a requested range are read out from said recording medium and returned to said navigation system at said step (b).
Claim 6
Dependent Claim
72 words
The method according to claim 1 , wherein coordinates of map data for route computation are requested at said step (a), and at least any one of level structure, a classification of roads composed, coordinates in latitude and longitude, and a data set ID of the map data for route computation in said coordinates requested is read out from said recording medium and returned to said navigation system at said step (b).
Claim 7
Dependent Claim
76 words
The method according to claim 1 , wherein a route computation start coordinate and a route computation finish coordinate of the map data for route computation are requested at said step (a), and at least one of level structure and a data set ID of map data for route computation between said start coordinate and said finish coordinate requested is read out from said recording medium and returned to said navigation system at said step (b).
Claim 8
Dependent Claim
59 words
The method according to claim 1 , wherein level structure and a data set ID of the map data for route computation are requested at said step (a), and map data corresponding to said level structure and said data set ID requested are read out from said recording medium and returned to said navigation system at said step (b).
Claim 9
Dependent Claim
88 words
A navigation system comprising: execution means for executing navigation functions including display of maps or computation of routes; and data access means for reading out data recorded in a recording medium, wherein said execution means make a request to said data access means for map data by outputting an application programming interface, and said data access means reads out map data from said recording medium in a manner corresponding to said application programming interface and outputs the map data as a byte array object to said execution means.
Claim 10
Dependent Claim
88 words
A navigation system comprising: execution means for executing navigation functions including display of maps or computation of routes; and data access means for reading out data recorded in a recording medium, wherein said execution means make a request to said data access means for map data by outputting an application programming interface, and said data access means reads out map data from said recording medium in a manner corresponding to said application programming interface and outputs the map data as a byte array object to said execution means.
Claim 11
Dependent Claim
53 words
The system according to claim 8 , wherein said execution means make a request to said data access means for map data for display, and said data access means reads out from said recording medium map data in a range covering a requested range and outputs the map data to said execution means.
Claim 12
Dependent Claim
54 words
The system according to claim 8 , wherein said execution means make a request to said data access means for map data for position computation, and said data access means reads out from said recording medium map data in a range covering a requested range and outputs the map data to said execution means.
Claim 13
Dependent Claim
52 words
The system according to claim 8 , wherein said execution means make a request to said data access means for guide map data, and said data access means reads out from said recording medium map data in a range covering a requested range and outputs the map data to said execution means.
Claim 14
Dependent Claim
78 words
The system according to claim 8 , wherein said execution means make a request to said data access means for coordinates of map data for route computation, and said data access means reads out from said recording medium at least any one of level structure, a classification of roads composed, coordinates in latitude and longitude, and a data set ID of the map data for route computation in said coordinates requested and outputs it to said execution means.
Claim 15
Dependent Claim
83 words
The system according to claim 8 , wherein said execution means makes a request to said data access means for a route computation start coordinate and a route computation finish coordinate of the map data for route computation, and said data access means reads out from said recording medium at least any one of level structure and a data set ID of map data for route computation between said start coordinate and said finish coordinate requested and outputs it to said execution means.
Claim 16
Dependent Claim
67 words
The system according to claim 8 , wherein said execution means make a request to said data access means for level structure and a data set ID of the map data for route computation, and said data access means reads out from said recording medium map data corresponding to said level structure and said data set ID requested and outputs the map data to said execution means.
References Cited (Backward Citations)
JPH02129800A
Cited
US6083353A
Cited
EP0828224A2
Cited
US5968109A
Cited
US6047280A
Cited
US6094677A
Cited
US6081665A
Cited
US6038559A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-05-14 | 2004-11-13 | 2005-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-05-14 | 2008-11-13 | 2009-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-05-14 | 2012-11-13 | 2013-05-15 | $7700.00 | Window Closed / Lapsed |