Distributed IRD system

• US 6,424,947 B1
• Filed: 09/21/1998
• Issued: 07/23/2002
• Est. Priority Date: 09/29/1997
• Status: Expired due to Term

• Current Assignee: Synamedia Limited
• Original Assignee: NDS Limited (Cisco Systems, Inc.)
• Inventors: Silver, Yonatan, Tsuria, Yossef
• Primary Examiner(s): Kemper, M.
• Application Number:
  US09/158,952
• Time in Patent Office: 1,401 Days
• Field of Search: 705/1, 705/26, 705/72, 380/4, 380/227-233, 455/5.1, 725/6, 725/27, 725/30, 725/134, 725/87, 725/104, 348/552, 348/553, 348/563, 348/569, 348/734, 348/844
• US Class Current: 705/1.1
• CPC Class Codes: H03J 1/0025 in a remote control unit remote control tuning in general H03J9/00
• CPC Class Codes: H04N 21/41265 having a remote control device for bidirectional communication between the remote control device and client device unidirectional remote control device H04N21/42204
• CPC Class Codes: H04N 21/4181 for conditional access
• CPC Class Codes: H04N 21/42221 Transmission circuitry, e.g. infrared [IR] or radio frequency [RF]
• CPC Class Codes: H04N 21/4367 Establishing a secure communication between the client and a peripheral device or smart card
• CPC Class Codes: H04N 21/4408 involving video stream encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
• CPC Class Codes: H04N 21/441 Acquiring end-user identification , e.g. using personal code sent by the remote control or by inserting a card
• CPC Class Codes: H04N 21/4751 for defining user accounts, e.g. accounts for children
• CPC Class Codes: H04N 21/4753 for user identification, e.g. by entering a PIN or password cryptographic authentication protocols H04L9/32; networks authentication protocols H04L63/08
• CPC Class Codes: H04N 7/163 by receiver means only

Abstract

A subscriber unit in a television system including an integrated receiver and decoder (IRD) including a first smart card reader which is operative to accept a first smart card, and a remote control including a second smart card reader which is operative to accept a second smart card. The first smart card and the second smart card, when inserted in the corresponding first and second smart card readers respectively, are operative to communicate with each other in wireless communication over a wireless communication link to control access to services.

Claims

1. A subscriber unit in a television system comprising:

an integrated receiver and decoder (IRD) comprising a first smart card reader which is operative to accept a first smart card;

a remote control comprising a second smart card reader which is operative to accept a second smart card that is operative to generate an authorization signal authorizing access to services;

a two-way wireless IRD communicator operative to enable two-way wireless communication between the first smart card and the second smart card over a wireless communication link when the first smart card and the second smart card are inserted in the corresponding first and second smart card readers respectively; and

an IRD verifier operatively associated with the first smart card reader and the two-way wireless IRD communicator and operative to receive from the second smart card via the two-way wireless IRD communicator said authorization signal authorizing access to services and to enable access to said services in response to reception of said authorization signal wherein each of said IRD and said remote control include an encryptor/decryptor which encrypts/decrypts said wireless communication between the first smart card and the second smart card.

2. Apparatus according to claim 1 wherein the first smart card, when inserted in the first smart card reader, is operative to control access to at least a first service, and

the second smart card, when inserted in the second card reader, is operative to control access to at least a second service, and

the first smart card and the second smart card, when both are inserted into the first and second smart card readers respectively, are operative to communicate with each other via the two-way wireless IRD communicator in two-way wireless communication over the wireless communication link to control access to at least a third service.

3. A subscriber unit according to claim 1 and wherein said access to services comprises at least one of the following:

authorization for purchase of a restricted television program;

authorization for purchase of merchandise;

authorization for purchase of information; and

authorization for purchase of a service.

4. A subscriber unit according to claim 1 and wherein said access to services is associated with a PIN of a subscriber.

5. A subscriber unit according to claim 1 and wherein said remote control includes a display and an input device for interacting with a subscriber.

6. A subscriber unit according to claim 1 and wherein said IRD includes:

a receiver and decoder unit which is operatively associated with said IRD verifier and is operative to receive and decode television transmissions provided by said television system, wherein

said IRD verifier is operative to accept a first authorization signal from said first smart card, and a second authorization signal from said second smart card via said two-way wireless IRD communicator over said wireless communication link, and to provide a key for decoding at least part of said television transmissions to said receiver and decoder unit.

7. A subscriber unit according to claim 6 and wherein said remote control includes a remote control verifier which is coupled to said second smart card reader, and

said remote control verifier is operative to verify authenticity of the second smart card, to receive said second authorization signal from said second smart card, and to provide said second authorization signal to said IRD verifier via said two-way wireless IRD communicator over said wireless communication link when authenticity of said second smart card is verified.

8. A subscriber unit according to claim 1 and wherein said remote control includes a remote control verifier which is coupled to said second smart card reader, and

said remote control verifier is operative to accept a first authorization signal from said first smart card via said two-way wireless IRD communicator over said wireless communication link, and a second authorization signal from said second smart card, and to provide a key for decoding at least part of television transmissions to a receiver and decoder unit comprised in said IRD.

15. An access control method according to claim 4 and wherein said step of enabling access to said second group of television program transmissions comprises providing an authorization for purchase of at least one of the following:

restricted television programs;

merchandise;

information; and

services.

16. An access control method according to claim 15 and wherein said step of providing an authorization for purchase comprises:

determining a second set of conditions; and

providing said authorization for purchase in accordance with said second set of conditions.

17. An access control method according to claim 16 and wherein said second set of conditions comprises a second limit.

19. An access control method according to claim 17 and wherein said second limit is programmable.

21. A subscriber unit according to claim 1 and wherein said two-way wireless IRD communicator comprises an infrared (IR) transceiver.

22. A subscriber unit according to claim 1 and wherein said IRD verifier is also operative to receive from the second smart card via the two-way wireless IRD communicator at least one of the following:

information related to at least one viewing or purchasing preference of a subscriber;

information related to at least one favorite channel preference of the subscriber;

information related to viewing habits of the subscriber;

subscriber preferences related to electronic program guide (EPG) suggestions; and

at least one authorization to view at least one premium program which has been subscribed to, not based on payment for viewing.

9. A remote control for use in a television system, the television system comprising an integrated receiver and decoder (IRD) comprising an encryptor/decryptor and first smart card reader which is operative to accept a first smart card, the remote control comprising:

a two-way wireless remote-control (RC) communication apparatus operative to establish a two-way wireless communication link with the IRD;

a second smart card reader which is operative to accept a second smart card that is operative to generate an authorization signal authorizing access to services;

an encryptor/decryptor which encrypts wireless communications to the IRD operating with the first smart card and decrypts wireless communications from the IRD;

a remote control verifier operatively associated with the two-way wireless RC communication apparatus and the second smart card reader and the encrypter/decrypter and operative to receive an encrypted said authorization signal from the second smart card, to authenticate the second smart card, and to transmit said authorization signal to the IRD over the wireless communication link in response to authentication of the second smart card thereby enabling access to said services.

23. A remote control according to claim 9 and wherein said two-way wireless RC communication apparatus comprises an IR transceiver.

24. A remote control according to claim 9 and wherein said remote control verifier is also operative to receive from the second smart card at least one of the following:

information related to at least one viewing or purchasing preference of a subscriber;

information related to at least one favorite channel preference of the subscriber;

information related to viewing habits of the subscriber;

subscriber preferences related to electronic program guide (EPG) suggestions; and

at least one authorization to view at least one premium program which has been subscribed to, not based on payment for viewing.

10. A method for use in a television system, the television system comprising a remote control and an integrated receiver and decoder (IRD) comprising a first smart card reader which is operative to accept a first smart card, and an encrypter/decrypter the method comprising:

establishing a two-way wireless communication link between the remote control and the IRD;

accepting, in a second smart card reader in the remote control, a second smart card which is operative to generate an authorization signal authorizing access to services;

receiving said authorization signal generated by the second smart card;

authenticating the second smart card;

encrypting said authorization signal; and

transmitting said encrypted authorization signal to the IRD operating with said first smartcard over the wireless communication link in response to said authenticating and receiving for enabling access to said services.

25. A method according to claim 10 and wherein said receiving also comprises:

receiving from the second smart card at least one of the following;

information related to at least one viewing or purchasing preference of a subscriber;

information related to at least one favorite channel preference of the subscriber;

information related to viewing habits of the subscriber;

subscriber preferences related to electronic program guide (EPG) suggestions; and

at least one authorization to view at least one premium program which has been subscribed to, not based on payment for viewing; and

said transmitting also comprises transmitting to the IRD over the wireless communication link at least one of the following;

said information related to at least one viewing or purchasing preference of the subscriber;

said information related to at least one favorite channel preference of the subscriber;

said information related to viewing habits of the subscriber;

said subscriber preferences related to electronic program guide (EPG) suggestions; and

said at least one authorization to view at least one premium program which has been subscribed to, not based on payment for viewing.

11. An access control method comprising:

inserting a first smart card in an IRD;

enabling access to a first group of television program transmissions;

inserting a second smart card in a remote control which is in two-way wireless communication with the IRD;

generating, in the second smart card, an authorization signal authorizing access to a second group of television program transmissions;

authenticating the second smart card;

encrypting said authorization signal;

transmitting said encrypted authorization signal to the IRD;

enabling access to said second group of television program transmissions in response to said generating, authenticating encrypting and transmitting; and

wirelessly communicating in two-way wireless communication between the first smart card and the second smart card, when the first smart card is inserted in the IRD and the second smart card is inserted in the remote control, so as to enable access to a third group of television program transmissions.

12. An access control method according to claim 11 and wherein said step of enabling access to a first group of television program transmissions comprises providing an authorization for purchase of at least one of the following:

restricted television programs;

merchandise;

information; and

services.

13. An access control method according to claim 12 and wherein said step of providing an authorization for purchase comprises:

determining a first set of conditions; and

providing said authorization for purchase in accordance with said first set of conditions.

14. An access control method according to claim 13 and wherein said first set of conditions comprises a first limit.

18. An access control method according to claim 14 and wherein said first limit is programmable.

20. An access control method according to claim 11 and also comprising the step of enabling decoding of conventional remote control functions in response to said step of inserting a first smart card in an IRD.