Contactless data transmission system

• US 20020077063A1
• Filed: 12/14/2001
• Published: 06/20/2002
• Est. Priority Date: 12/16/2000
• Status: Abandoned Application

• Current Assignee: Atmel Germany GmbH (Microchip Technology Incorporated)
• Original Assignee: Atmel Germany GmbH (Microchip Technology Incorporated)
• Inventors: Ansel, Dieter
• Application Number:
  US10/017,309
• Publication Number:
  US 20020077063A1
• Time in Patent Office: Days
• US Class Current: 455/41.1
• CPC Class Codes: H04L 2209/80 Wireless
• CPC Class Codes: H04L 2209/84 Vehicles
• CPC Class Codes: H04L 9/0897 involving additional devices, e.g. trusted platform module [TPM], smartcard or USB
• CPC Class Codes: H04L 9/14 using a plurality of keys or algorithms
• CPC Class Codes: Y04S 40/20 Information technology specific aspects, e.g. CAD, simulation, modelling, system security

Abstract

1. Contactless data transmission system

2.1. Contactless data transmission systems in which initially, through inductive coupling, power transmission takes place have unchangeable security properties that define the reaction speed and the range of such systems.

2.2. On the data transmission system there is a switch or a control line with the help of which the input data format can be modified subsequently.

2.3. A contactiess data transmission system of this kind makes it possible to subsequently adapt to the purpose of application for a wide variety of applications with different requirements in terms of security, reaction speed and range.

Claims

1. ) Contactless data transmission system with

an encoding algorithm (A64) with which

the input data (R₆₄, R₃₂), which are processed with the encoding algorithm (A64), are linked with

a secret code (CODE) that determines the encoding algorithm (A64),

wherein the data transmission system has a facility (12, S64/S32) for setting to different formats of the input data (R₆₄, R₃₂) for the encoding algorithm (A64).

2. ) Contactless data transmission system in accordance with Patent claim 1, wherein the facility for setting to different formats of the input data (R₆₄, R₃₂) is a control line (S64/S32).

3. ) Contactless data transmission system in accordance with Patent claim 1, wherein the facility for setting to different formats of the input data (R₆₄, R₃₂) is a switch (12).

4. ) Method for a contactless data transmission system in accordance with Patent claim 1, wherein the same encoding algorithm (A64) is used for the various formats of the input data (R₆₄, R₃₂).

5. ) Method for a contactless data transmission system in accordance with Patent claim 2, wherein the same encoding algorithm (A64) is used for the various formats of the input data (R₆₄, R₃₂).

6. ) Method for a contactless data transmission system in accordance with Patent claim 3, wherein the same encoding algorithm (A64) is used for the various formats of the input data (R₆₄, R₃₂).

7. ) Method for a contactless data transmission system in accordance with Patent claim 1, wherein the same secret code (CODE) is used for the various formats of the input data (R₆₄, R₃₂).

8. ) Method for a contactless data transmission system in accordance with Patent claim 2, wherein the same secret code (CODE) is used for the various formats of the input data (R₆₄, R₃₂).

9. ) Method for a contactless data transmission system in accordance with Patent claim 3, wherein the same secret code (CODE) is used for the various formats of the input data (R₆₄, R₃₂).

10. ) Method for a contactless data transmission system in accordance with Patent claim 4, wherein the same secret code (CODE) is used for the various formats of the input data (R₆₄, R₃₂).