Data transmission method

• US 20020042878A1
• Filed: 08/31/2001
• Published: 04/11/2002
• Est. Priority Date: 09/01/2000
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Fischer, Hans-Juergen, Westendorf, Andreas
• Granted Patent: US 7,712,139 B2
• Time in Patent Office: Days
• US Class Current: 713/169
• CPC Class Codes: H04L 1/18 Automatic repetition systems, e.g. Van Duuren systems
• CPC Class Codes: H04L 2209/56 Financial cryptography, e.g. electronic payment or e-cash
• CPC Class Codes: H04L 2209/80 Wireless network architectures or network communication protocols for wireless network security H04W12/00
• CPC Class Codes: H04L 2209/84 Vehicles
• CPC Class Codes: H04L 9/3247 involving digital signatures

Abstract

A data transmission method is described, where first data is transmitted to a first processor, then second data based on the first data is transmitted to a second processor, and a check result is transmitted back to the first processor. This permits an independent check of data transmitted to a first processor by a second processor, so that abuse or prohibited use of first data in the first processor can be prevented.

Claims

1. A data transmission method, first data being transmitted to a first processor,

wherein second data based on the first data is transmitted to a second processor,

the second data is checked in the second processor, and

a check result is transmitted to the first processor.

2. The method according to claim 1,

wherein the first data is transmitted to the first processor from a data medium drive or a third processor.

3. The method according to claim 2,

wherein the identity of the third processor and/or the data carrier is checked in the second processor.

4. The method according to one of the preceding claims,

wherein an error-free transmission of data is checked in each the first processor and/or in the second processor.

5. The method according to one of the preceding claims,

wherein the first and/or second data is transmitted in encoded form and/or with an electronic signature.

6. The method according to claim 5,

wherein the data is encoded with a private key of the respective processor and/or is provided with an electronic signature.

7. The method according to one of the preceding claims,

wherein the first processor is connected to the second processor and/or the second processor is connected to the third processor by a wireless connection.

8. The method according to one of the preceding claims,

wherein a database is accessed in the second processor for checking the second data.

9. The method according to one of the preceding claims,

wherein a payment process is initiated by the second processor as a function of the second data.

10. The method according to one of the preceding claims,

wherein use of the first data in the first processor is allowed by the second processor.

11. The method according to one of the preceding claims,

wherein use of the first data by the first processor is stored by the second processor.

12. The method according to one of the preceding claims,

wherein a check is restarted in the first processor if the check has not been run through completely.

13. The method according to one of the preceding claims,

wherein a program for checking the first data and/or a check result is stored in a nonvolatile form in the second processor.

14. The method according to one of the preceding claims,

wherein the first data in the first processor is deleted if no user license for the first data is transmitted by the third processor.

15. The method according to one of the preceding claims,

wherein a warning is delivered if the first data is not released.

16. The method according to one of the preceding claims,

wherein a first check code is determined from the first data, and

the second data is formed at least in part from the first check code.

17. The method according to one of the preceding claims,

wherein a second check code is determined from data of the first processor, and

the second data is formed at least in part from the second check code.

18. A device for carrying out the method according to one of the preceding claims.

19. A controller in a motor vehicle for carrying out the method according to one of claims 1 through 17,

wherein the first processor (3) is positioned in the controller (1).

20. A check processor for carrying out the method according to one of claims 1 through 17,

wherein the second processor (15, 27) is positioned in the check processor (14, 26).

21. A central service office for carrying out the method according to one of claims 1 through 17,

wherein the third processor (22) is positioned in the central service office (21).