EP0793166A2
Expired / Lapsed
EP
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Navigation system and computer program loading therefor
Assignee: Aisin AW Co Ltd
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Filing: 1996-08-01
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Granted: —
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Expires: 2016-08-01
Abstract
Abstract An external storage device 3 having navigation data and program stored therein to perform a route search and route guidance, and a central processing unit 4 which includes a program storage flash memory 41 and program loading means 42 for loading a program from external storage device 3 into flash memory 41 and in which the program stored in flash memory 41 is run to perform a route search and route guidance are provided. Central processing unit 4 compares a version of the program stored in flash memory 41 with a version of the program stored in external storage device 3, so that only when the version of the program stored in external storage device 3 is higher than that in flash memory 41, the program is loaded from external storage device 3 into flash memory 41.
Inventors
- 👤 Kyomi c/o Aisin AW Co. Ltd. Morimoto
- 👤 Mitsuhiro c/o Aisin AW Co. Ltd. Nimura
- 👤 Yasunobu c/o Aisin AW Co. Ltd. Ito
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 19:49
CPC Classifications
G; G06; G06F; G06F8/00; G06F8/60; G06F8/65
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
113 words
A navigation system designed to perform a route search to a destination and route guidance, which comprises an external storage device in which navigation data and program for performing said route search and said route guidance have been stored, and a central processing unit for running said program, thereby performing said route search and said route guidance on the basis of said data, characterized in that: said central processing unit includes nonvolatile memory means for storing said program, and program loading means for loading said program from said external storage device into said nonvolatile memory means, so that said program loaded from said external storage device into said nonvolatile memory means is run.
Claim 2
Dependent Claim
61 words
The navigation system according to Claim 1, characterized in that: said program loading means is designed such that when the program stored in said external storage device is to carry out navigation and is different from the program stored in said nonvolatile memory means, said first-mentioned program is loaded from said external storage device into said nonvolatile memory means for updating.
Claim 3
Dependent Claim
75 words
The navigation system according to Claim 1 or 2, characterized in that; said program loading means loads management information from said external storage means into memory, so that if said management information is to perform navigation, a classification number and an update number as to whether the goal of said navigation is local navigation, national navigation or sight-seeing are compared with the program stored in said nonvolatile memory means to update said non-volatile memory means.
Claim 4
Dependent Claim
48 words
The navigation system according to Claim 3, characterized in that: said program loading means is designed to check up a program update number, so that when said update number is older in said nonvolatile memory means than in said external storage device, said nonvolatile memory means is updated.
Claim 5
Dependent Claim
48 words
The navigation system according to Claim 3 or 4, characterized in that: said program loading means is designed to check up a program classification number, so that when said classification number differs between said external storage device and said nonvolatile memory means, said nonvolatile memory means is updated.
Claim 6
Independent Claim
55 words
The system according to any one of claims 1 to 5, characterized in that: said external storage device stores a loader program, and a navigation program and data, and said program loading means loads said loader program from said external storage device into memory so that said navigation program is updated by said loader program.
Claim 7
Independent Claim
46 words
The system according to any one of claims 1 to 6, characterized in that: said external storage device includes a plurality of disks, and a disk changer for making an exchange of said plurality of disks in response to a selection signal for loading into memory.
Claim 8
Dependent Claim
116 words
A navigation system designed to perform a route search to a destination and route guidance, which comprises an external storage device in which navigation data and a plurality of programs for performing said route search and said route guidance have been stored, and a central processing unit for running said program, thereby performing said route search and said route guidance on the basis of said data, characterized in that: said central processing unit includes nonvolatile memory means for storing said programs, and program loading means for loading said programs from said external storage device into said nonvolatile memory means, so that said program loaded from said external storage device into said nonvolatile memory means is run.
Claim 9
Dependent Claim
46 words
The navigation system according to Claim 8, characterized in that: said plurality of programs are compatible with different types of navigation systems, and said program loading means retrieves a program compatible with a given corresponding type of navigation system from said external storage device into memory.
Claim 10
Dependent Claim
63 words
The navigation system according to Claim 8 or 9, characterized in that: said external storage device has a collection of index information including information about a given corresponding type of navigation system, and a program address and program size thereof, and said program loading means retrieves said corresponding type of navigation system from said index information for loading a corresponding program into memory.
Claim 11
Dependent Claim
67 words
The navigation system according to Claim 8, 9 or 10, characterized in that: said external storage device has version information for each of programs compatible with different types of navigation systems, and said program loading means of said central processing unit compares a program and version stored in said program storage means, so that only when there is a difference therebetween, said program is loaded into memory.
Claim 12
Independent Claim
72 words
The system according to any one of claims 8 to 11, characterized in that: said external storage means has an address specific to each corresponding type of navigation system assigned to said plurality of programs, and said program loading means has a preset loading address specific to said corresponding type of navigation system and loads a program compatible with said corresponding type of navigation system from said external storage device into memory.
Claim 13
Independent Claim
30 words
The system according to any one of claims 8 to 12, characterized in that: said navigation data includes a collection of map data, search data, guidance data, and destination date.
Claim 14
Independent Claim
39 words
The system according to any one of claims 8 to 13, characterized in that: said plurality of programs include a collection of map drawing program, route search program, route guidance program, present-position calculation program, and destination setting control program.
Claim 15
Independent Claim
46 words
The system according to any one of claims 8 to 14, characterized in that: said plurality of programs have programs differing between the types of navigation systems and a program common to the types of navigation systems stored therein along with address information for each program.
Claim 16
Dependent Claim
49 words
A memory medium used on a navigation system designed to perform a route search to a preset destination and route guidance, characterized in that: navigation data and a plurality of programs for performing a route search to said preset destination and the thus searched route guidance are stored therein.
Claim 17
Dependent Claim
26 words
The memory medium according to Claim 16, characterized in that: said navigation data includes a collection of map data, search data, guidance data, and destination date.
Claim 18
Dependent Claim
24 words
The memory medium according to Claim 16 or 17, characterized in that: said plurality of programs are compatible with different types of navigation systems.
Claim 19
Dependent Claim
38 words
The memory medium according to Claim 16, 17 or 18, characterized in that: said plurality of programs include a collection of map drawing program, route search program, route guidance program, present-position calculation program, and destination setting control program.
Claim 20
Independent Claim
46 words
The system according to any one of claims 16 to 19, characterized in that: said plurality of programs have programs differing between the types of navigation systems and a program common to the types of navigation systems stored therein along with address information for each program.
References Cited (Backward Citations)
No citation records indexed.
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