Portable Electronic Entity Capable of Receiving Broadcast Multimedia Data Flow

• US 20080263680A1
• Filed: 05/02/2007
• Published: 10/23/2008
• Est. Priority Date: 05/02/2006
• Status: Active Grant

• Current Assignee: IDEMIA France (Advent International Corporation)
• Original Assignee: Oberthur Card Systems, S.A. (Advent International Corporation)
• Inventors: Bertin, Marc
• Granted Patent: US 9,124,768 B2
• Time in Patent Office: Days
• US Class Current: 726/30
• CPC Class Codes: G06F 21/10 Protecting distributed programs or content, e.g. vending or licensing of copyrighted material protection in video systems or pay television H04N7/16 ; Digital rights management [DRM]
• CPC Class Codes: H04N 21/41407 embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop constructional details of equipment or arrangements specially adapted for portable computer application G06F1/1626; arrangements specially adapted for mobile receivers in broadcast systems H04H20/57
• CPC Class Codes: H04N 21/4181 for conditional access
• CPC Class Codes: H04N 21/4183 providing its own processing capabilities, e.g. external module for video decoding
• CPC Class Codes: H04N 21/4367 Establishing a secure communication between the client and a peripheral device or smart card
• CPC Class Codes: H04N 21/4405 involving video stream decryption
• CPC Class Codes: H04N 21/44236 Monitoring of piracy processes or activities protecting computer platforms against harmful, malicious or unexpected behaviour or activities using intrusion detection and counter measures G06F21/566; computer virus detection and handling G06F21/56
• CPC Class Codes: H04N 21/4623 Processing of entitlement messages, e.g. ECM [Entitlement Control Message] or EMM [Entitlement Management Message] arrangements for conditional access to broadcast information or to broadcast-related services H04H60/14
• CPC Class Codes: H04N 7/163 by receiver means only

Abstract

A portable electronic entity includes a communication interface (110) with a host terminal (TH), a conversion system (170) for a signal received in a secure multimedia data flow and an element to transmit to the host terminal a flow of multimedia data obtained from the secure multimedia data flow. It also includes systems (160) capable of allowing host terminal restitution of the multimedia data flow that was transmitted.

Claims

1. Portable electronic entity comprising a communication interface (110) with a host terminal (TH), means (170) for converting a received signal into a secure multimedia data stream and means for transmitting to the host terminal a multimedia data stream obtained from the secure multimedia data stream, characterized in that it comprises means (160) adapted to authorize reproduction in the host terminal of the transmitted multimedia data stream.

2. Portable electronic entity according to claim 1, characterized in that the means adapted to authorize reproduction comprise means for disabling transmission of information to the host terminal, the disabling means being activated in case of non-reproduction of the multimedia data stream.

3. Electronic entity according to claim 2, characterized in that the disabling means are adapted to command the means for transmitting to disable the transmission of the multimedia data stream.

4. Electronic entity according to claim 1, characterized in that the means adapted to authorize reproduction comprise stopping means adapted to command the conversion means in such a manner as to prevent said conversion in the case of non-reproduction of the multimedia data stream.

5. Portable electronic entity according to claim 1, characterized in that the means adapted to authorize reproduction comprise means for decrypting the secure multimedia data stream.

6. Portable electronic entity according to claim 1, characterized in that it further comprises means for storing decryption information adapted to decrypt the received multimedia data stream.

7. Portable electronic entity according to claim 1, characterized in that it further comprises a memory containing an application (151) for processing the multimedia data stream and loading means adapted to load and to execute said application coming from the memory in the host terminal (TH) after connection of the electronic entity to the host terminal.

8. Portable electronic entity according to claim 6, characterized in that the received data stream processing application (151) is launched automatically after connection of the portable electronic entity (100) to the host terminal (TH).

9. Portable electronic entity according to claim 7, characterized in that the means adapted to authorize reproduction comprise security means (160) adapted to make secure at least in part the execution of said multimedia data stream processing application (151) loaded and executed in the host terminal (TH) in this way in accordance with a predetermined security mode.

10. Portable electronic entity according to claim 9, characterized in that the security means (160) are adapted to form at least a part of said processing application on each loading.

11. Portable electronic entity according to claim 10, characterized in that the formation of said part uses an unpredictable value.

12. Portable electronic entity according to claim 10, characterized in that the means (160) for making the data stream processing application secure are further adapted to make secure any modification made to said data stream processing application (151).

13. Portable electronic entity according to claim 9, characterized in that the security means (160) are adapted to execute a protocol for authentication of the bearer of the entity (100) between said portable electronic entity (100) and the host terminal (TH).

14. Portable electronic entity according to claim 7, characterized in that said multimedia data stream processing application (151) uses at least one temporary cryptographic key.

15. Portable electronic entity according to claim 7, characterized in that the data stream processing application (151) comprises at least one main program executed by the host terminal (TH) and at least one auxiliary program stored and executed in said entity (100) connected to the host terminal (TH), the main program generating commands for execution of all or part of said auxiliary program.

16. Portable electronic entity according to claim 15, characterized in that the auxiliary program is divided into a plurality of sections each associated with an authentication code.

17. Portable electronic entity according to claim 16, characterized in that it comprises means for verification of the authentication codes and means for disabling said entity in case of negative verification.

18. Portable electronic entity according to claim 7, characterized in that the processing application (151) is adapted to decode the transmitted multimedia stream.

19. Portable electronic entity according to claim 7, characterized in that the processing application (151) is adapted to decompress the transmitted multimedia stream.

20. Portable electronic entity according to claim 19, characterized in that the processing application (151) is adapted to effect MPEG type decoding.

21. Portable electronic entity according to claim 1, characterized in that it further comprises means (160) for making communication between said portable electronic entity (100) and the host terminal (TH) secure.

22. Portable electronic entity according to claim 21, characterized in that the means (160) for making the communication secure comprise means for encrypting the multimedia data stream to be transmitted to the host terminal.

23. Portable electronic entity according to claim 22, characterized in that the means for encryption of the multimedia data stream are adapted to encrypt the data stream using a session key.

24. Portable electronic entity according to claim 23, when claim 21 is dependent on claim 7, characterized in that the session key is derived from an item of data contained in the processing application (151).

25. Portable electronic entity according to claim 1, characterized in that the secure multimedia data stream being encrypted, the means (160) adapted to authorize reproduction are adapted to transmit to the host terminal in a secure manner a key for decrypting the secure multimedia data stream.

26. Portable electronic entity according to claim 1, characterized in that the communication interface (110) with the host terminal (TH) conforms to the USB standard.

27. Portable electronic entity according to claim 1, characterized in that the portable electronic entity (100) is a USB key.

28. Portable electronic unit according to claim 1, characterized in that the conversion means comprise a reception interface adapted to be connected to a reception antenna.

29. Portable electronic entity according to claim 1, characterized in that the conversion means comprise a reception interface adapted to be connected to a cable network.

30. Portable electronic entity according to claim 1, characterized in that the conversion means comprise a demodulator circuit.

31. Portable electronic entity according to claim 1, characterized in that the conversion means comprise a tuner circuit.