SMART CARD WITH DATA STORAGE, SET-TOP BOX, PORTABLE PLAYER FOR OPERATING SMART CARD WITH DATA STORAGE AND METHOD FOR MANUFACTURING SMART CARD WITH DATA STORAGE

• US 20070136610A1
• Filed: 12/11/2006
• Published: 06/14/2007
• Est. Priority Date: 12/12/2005
• Status: Abandoned Application

• Current Assignee: Advanced Digital Broadcast SA (Advanced Digital Broadcast Holdings SA)
• Original Assignee: Advanced Digital Broadcast SA (Advanced Digital Broadcast Holdings SA)
• Inventors: Lambinet, Philippe
• Application Number:
  US11/608,849
• Publication Number:
  US 20070136610A1
• Time in Patent Office: Days
• US Class Current: 713/193
• 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: G06F 21/77 in smart cards
• CPC Class Codes: G06F 21/78 to assure secure storage of data address-based protection against unauthorised use of memory G06F12/14; record carriers for use with machines and with at least a part designed to carry digital markings G06K19/00
• CPC Class Codes: G06Q 20/341 Active cards, i.e. cards including their own processing means, e.g. including an IC or chip
• CPC Class Codes: G06Q 20/35765 Access rights to memory zones
• CPC Class Codes: G06Q 20/40975 using encryption therefor
• CPC Class Codes: G07F 7/1008 Active credit-cards provided with means to personalise their use, e.g. with PIN-introduction/comparison system
• CPC Class Codes: G07F 7/1091 Use of an encrypted form of the PIN
• CPC Class Codes: H04N 2005/91364 the video signal being scrambled
• CPC Class Codes: H04N 21/4181 for conditional access
• CPC Class Codes: H04N 21/4184 providing storage capabilities, e.g. memory stick
• CPC Class Codes: H04N 21/4334 Recording operations recording of a television signal H04N5/76; arrangements for recording or accumulating broadcast information or broadcast-related information H04H60/27
• CPC Class Codes: H04N 21/4367 Establishing a secure communication between the client and a peripheral device or smart card
• CPC Class Codes: H04N 5/913 for scrambling ; for copy protection
• CPC Class Codes: H04N 7/163 by receiver means only

Abstract

In a smart card (100) with memory blocks (110, 120, 130) and a processor (140), one of the memory blocks (110) has a decryption keys area for storing decryption keys (111) and at least one of the memory blocks, which is non-volatile memory (130), has data storage area (131) for storing data sets, whereas the processor (140) is provided with a decryption keys interface (141) for handling requests for the decryption keys and a data interface (142) for handling requests for transmission of the data sets, from which at least one data set stored in the data storage area is decryptable using the decryption keys (111).

Claims

1. A smart card comprising:

memory blocks (110, 120, 130) wherein at least one memory block (110) of the memory blocks (110, 120, 130) has a decryption keys area storing decryption keys (111) and at least one memory block of the memory blocks is non-volatile memory (130) having data storage area (131) storing data sets; and

a processor (140) provided with a decryption keys interface (141) for handling requests for the decryption keys (141) and a data interface (142) for handling requests for transmission of the data sets wherein at least one data set stored in the data storage area is decryptable using the decryption keys (111).

2. The smart card according to claim 1, wherein at least one data set stored in the data storage area (131) is decryptable using decryption keys (233) provided by another smart card (200).

3. The smart card according to claim 1, wherein the decryption keys area comprises decryption keys (111) for descrambling data external to the smart card.

4. The smart card according to claim 1, wherein the data storage area (230) comprises pre-stored data area (231) and user data area (232).

5. A digital television set-top box comprising:

a signal receiving block (301), receiving a digital television signal TV and providing a first data stream (S1);

a descrambler (302) receiving the first data stream (S1) and a second data stream (S2), decrypting encrypted data using decryption keys (K) and providing a decrypted data stream (DS) comprising decrypted data of the first data stream (S1) and/or the second data stream (S2);

an audio/video decoder (303) receiving the decrypted data stream (DS), decoding the received data and providing an output signal (OUT); and

a smart card interface (304), communicating with a smart card (350) with memory and providing to the descrambler the decryption keys K and the second data stream (S2) read from the smart card memory.

6. The digital television set-top box according to claim 5, wherein the signal receiving block (401) further provides to the smart card interface a third data stream (S3) to be stored in the smart card memory.

7. The digital television set-top box according to claim 5, wherein the descrambler (502) has an output coupled to the smartcard interface (504) to enable sending the decrypted data stream (DS) to the smart card interface (504) to be stored in the smart card memory.

8. The digital television set-top box according to claim 5, further comprising:

a digital video recording system (708) providing to the smart card interface (704) a fourth data stream (S4) to be stored in the smart card memory.

9. The digital television set-top box according to claim 5, further comprising:

a digital video recording system (708) reading from the smart card interface (704) a fifth data stream (S5) to be stored in the digital video recording system memory.

10. The digital television set-top box according to claim 5, further comprising:

a software update manager (607) receiving software updates wherein the smart card interface (604) is a software object which is updatable by the software update manager (607).

11. A portable player comprising:

a decoder (801) receiving a decrypted data stream (DS), decoding the received data and providing an output signal (OUT);

a descrambler (802) receiving a first data stream (S1), decrypting encrypted data using decryption keys K and providing a decrypted stream (DS);

a smart card interface (803), communicating with a smart card (820) with memory and providing to the descrambler (802) the decryption keys K and the first data stream (S1) read from the smart card memory; and

a USB interface (804), communicating with an external device (830), providing a second data stream (S2) to be stored in the smart card memory.

12. The portable player according to claim 11, wherein the smart card interface (903) further provides a third data stream (S3) to the USB interface (904) to be transmitted to the external device (930).

13. The portable player according to claim 11, wherein the decrypted data stream (DS) is further provided to the USB interface (904) to be transmitted to the external device (930).

14. The portable player according to claim 11, wherein the decoder is an audio/video decoder.

15. The portable player according to claim 11, further comprising:

a display (907) and a loudspeaker (908) playing the output signal (OUT).

16. The portable player according to claim 11, wherein the decoder is an audio decoder.

17. A method for manufacturing a smart card with data storage, the method comprising the step of

providing a smart card with encryption keys memory and data storage area;

providing files;

providing decryption keys;

scrambling the files using the decryption keys; and

storing the encrypted files and the decryption keys on the smart card.