AUTHORIZATION SYSTEM OF NAVIGATION DEVICE AND ASSOCIATED AUTHORIZATION METHOD

• US 20090293115A1
• Filed: 05/21/2008
• Published: 11/26/2009
• Est. Priority Date: 05/21/2008
• Status: Active Grant

• Current Assignee: MediaTek, Inc.
• Original Assignee: MediaTek, Inc.
• Inventors: Chang, Yun-Chang, Liu, Hsien-Chang, Chen, An-Bang, Li, Shr-Cheng
• Granted Patent: US 8,082,582 B2
• Time in Patent Office: Days
• US Class Current: 726/17
• CPC Class Codes: G01C 21/20 Instruments for performing navigational calculations G01C21/24, G01C21/26 take precedence
• CPC Class Codes: G06F 21/445 by mutual authentication, e.g. between devices or programs
• CPC Class Codes: G06F 21/6209 to a single file or object, e.g. in a secure envelope, encrypted and accessed using a key, or with access control rules appended to the object itself
• CPC Class Codes: G06F 21/73 by creating or determining hardware identification, e.g. serial numbers
• CPC Class Codes: G06F 2221/2111 Location-sensitive, e.g. geographical location, GPS
• CPC Class Codes: G06F 2221/2129 Authenticate client device independently of the user
• CPC Class Codes: G06F 2221/2141 Access rights, e.g. capability lists, access control lists, access tables, access matrices

Abstract

An authorization system of a navigation device includes a first identification (ID) module and a second ID module. The first ID module is arranged to perform authorization for a first portion of the navigation device, and the second ID module is arranged to perform authorization for a second portion of the navigation device. The first and the second ID modules perform bidirectional authorization of the first and the second portions, and further determine behavior of the navigation device according to a result of the bidirectional authorization. An associated authorization method for controlling the navigation device is further provided.

Claims

1. An authorization system of a navigation device comprising:

a first identification (ID) module arranged to perform authorization for a first portion of the navigation device; and

a second ID module arranged to perform authorization for a second portion of the navigation device;

wherein the first and the second ID modules perform bidirectional authorization of the first and the second portions, and further determine behavior of the navigation device according to a result of the bidirectional authorization.

2. The authorization system of claim 1, wherein the first ID module generates challenge information to challenge the second ID module in order to determine whether the second portion is authorized.

3. The authorization system of claim 2, wherein the challenge information is generated by the first ID module according to a position, a velocity and/or a time of the navigation device.

4. The authorization system of claim 1, wherein the second ID module generates challenge information to challenge the first ID module in order to determine whether the first portion is authorized.

5. The authorization system of claim 4, wherein the challenge information is generated by the second ID module according to a position, a velocity and/or a time of the navigation device.

6. The authorization system of claim 5, wherein the second ID module checks whether the challenge information generated by the first ID module is correct in order to determine whether the first portion is authorized.

7. The authorization system of claim 6, wherein according to whether the challenge information generated by the first ID module is correct, the second ID module determines whether or how to generate a response to the challenge information.

8. The authorization system of claim 7, wherein the first ID module checks whether the second ID module generates a correct response to the challenge information in order to determine whether the second portion is authorized.

9. The authorization system of claim 1, wherein the first portion is a navigation information module, and the second portion is a host processing module.

10. The authorization system of claim 1, wherein the first portion is a host processing module, and the second portion is a GIS module.

11. An authorization method for controlling a navigation device, the method comprising:

performing a first authorization for a first portion of the navigation device;

performing a second authorization for a second portion of the navigation device;

performing a bidirectional authorization of the first and the second portions; and

determining behavior of the navigation device according to a result of the bidirectional authorization.

12. The method of claim 11, wherein the step of performing bidirectional authorization of the first and the second portions further comprises:

generating a challenge information to determine whether the second portion is authorized.

13. The method of claim 12, wherein the challenge information is generated according to a position, a velocity and/or a time of the navigation device.

14. The method of claim 11, wherein the step of performing bidirectional authorization of the first and the second portions further comprises:

generating challenge information to determine whether the first portion is authorized.

15. The method of claim 14, wherein the challenge information is generated according to a position, a velocity and/or a time of the navigation device.

16. The method of claim 15, wherein the step of performing bidirectional authorization of the first and the second portions further comprises:

checking whether the challenge information is correct in order to determine whether the first portion is authorized.

17. The method of claim 16, wherein the step of performing bidirectional authorization of the first and the second portions further comprises:

according to whether the challenge information is correct, determining whether or how to generate a response to the challenge information.

18. The method of claim 17, wherein the step of performing bidirectional authorization of the first and the second portions further comprises:

checking whether a correct response is generated to the challenge information in order to determine whether the second portion is authorized.

19. The method of claim 11, wherein the first portion is a host processing module, and the second portion is a GIS module.

20. The method of claim 11, wherein the first portion is a navigation information module, and the second portion is a host processing module.