Optional verification of interactive television content

• US 6,721,958 B1
• Filed: 03/08/2000
• Issued: 04/13/2004
• Est. Priority Date: 03/08/2000
• Status: Expired due to Term

• Current Assignee: OpenTV, Inc. (Kudelski SA)
• Original Assignee: OpenTV, Inc. (Kudelski SA)
• Inventors: Dureau, Vincent
• Primary Examiner(s): Miller, John
• Assistant Examiner(s): BELIVEAU, SCOTT E
• Application Number:
  US09/521,251
• Time in Patent Office: 1,497 Days
• Field of Search: 725/136, 725/25, 725/31, 725/135, 725/109, 725/110, 380/33, 380/211, 380/201, 713/160, 713/182, 713/201, 713/200, 713/153, 713/161, 705/57
• US Class Current: 725/136
• CPC Class Codes: H04N 21/234 Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
• CPC Class Codes: H04N 21/23476 by partially encrypting, e.g. encrypting the ending portion of a movie
• CPC Class Codes: H04N 21/26603 for automatically generating descriptors from content, e.g. when it is not made available by its provider, using content analysis techniques
• CPC Class Codes: H04N 21/454 Content or additional data filtering, e.g. blocking advertisements
• CPC Class Codes: H04N 21/462 Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
• CPC Class Codes: H04N 21/4622 Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet web site content organization and management for information retrieval from the Internet G06F16/958; transmission by internet of broadcast information H04H60/82; stock exchange data over packet-switching network H04L12/1804; push services including data channel over packet-switching network H04L12/1859
• CPC Class Codes: H04N 21/8166 involving executable data, e.g. software arrangements for executing specific programs G06F9/44; broadcasting computer programmes in broadcast systems H04H20/91; involving the movement of software or configuration parameters H04L67/34
• CPC Class Codes: H04N 7/162 Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
• CPC Class Codes: H04N 7/17345 Control of the passage of the selected programme

Abstract

A system and method implemented in an interactive television system for selectively controlling the verification of interactive television content delivered to a receiver wherein a notification is provided to the receiver to identify content which can be trusted and, when trusted content is delivered to the receiver, verification procedures on the trusted content are inhibited. The notification may be delivered prior to or with the trusted content, and it may be delivered via the same transmission means as the content or by some separate delivery means. The notification may identify the trusted content positively or negatively and may use wildcards in the identification. The trusted content may be identified by its source (e.g., a trusted channel) or by reference to the content itself. The notification may contain an expiration time beyond which is no longer valid. The notification may also contain an identifier and version number so that a subsequent notification having the same identifier and a later version number will supersede the prior notification.

Claims

1. A method of performing verification procedures on a selective basis, said method comprising:

receiving interactive television content in an interactive television receiver, wherein said interactive television content comprises a first portion which is trusted and a second portion which is not trusted;

receiving a notification in said interactive television receiver, wherein said notification identifies said first portion of said interactive television content as being trusted content;

said receiver performing one or more verification procedures relating to said second portion of said interactive television content; and

said receiver inhibiting performance of said one or more verification procedures in relation to said first portion of said interactive television content in response to detecting said notification;

wherein said notification includes a certificate associated with said first portion of said interactive television content.

2. The method of claim 1 wherein said first portion of said interactive television content is identified by one or more wildcards.

3. The method of claim 1 wherein said notification has an expiration time associated therewith, wherein said notification is valid before said expiration date and invalid after said expiration time.

4. The method of claim 1 wherein said notification has a version number associated therewith, wherein a notification having a later version number supersedes a notification having an earlier version number.

5. A method of performing verification procedures on a selective basis, said method comprising:

receiving interactive television content in an interactive television receiver, wherein said interactive television content comprises a first portion which is trusted and a second portion which is not trusted;

receiving a notification in said interactive television receiver, wherein said notification identifies said first portion of said interactive television content as being trusted content;

said receiver performing one or more verification procedures relating to said second portion of said interactive television content; and

said receiver inhibiting performance of said one or more verification procedures in relation to said first portion of said interactive television content in response to detecting said notification;

wherein said first portion of said interactive television content is identified by explicitly identifying said second portion of said interactive television content.

6. The method of claim 5 wherein said first portion of said interactive television content is identified by one or more wildcards.

7. The method of claim 5 wherein said notification has an expiration time associated therewith, wherein said notification is valid before said expiration date and invalid after said expiration time.

8. The method of claim 5 wherein said notification has a version number associated therewith, wherein a notification having a later version number supersedes a notification having an earlier version number.

9. A method of performing verification procedures on a selective basis, said method comprising:

receiving interactive television content in an interactive television receiver, wherein said interactive television content comprises a first portion which is trusted and a second portion which is not trusted;

receiving a notification in said interactive television receiver, wherein said notification identifies said first portion of said interactive television content as being trusted content;

said receiver performing one or more verification procedures relating to said second portion of said interactive television content; and

said receiver inhibiting performance of said one or more verification procedures in relation to said first portion of said interactive television content in response to detecting said notification;

wherein said notification is contained in a credential, wherein said credential is signed by a producer of said credential, and wherein said credential contains a certificate for verifying said producer'"'"'s signature and granting said producer a right to provide trusted content.

10. The method of claim 9 wherein said first portion of said interactive television content is identified by one or more wildcards.

11. The method of claim 9 wherein said notification has an expiration time associated therewith, wherein said notification is valid before said expiration date and invalid after said expiration time.

12. The method of claim 9 wherein said notification has a version number associated therewith, wherein a notification having a later version number supersedes a notification having an earlier version number.

13. A method of performing verification procedures on a selective basis, said method comprising:

receiving interactive television content in an interactive television receiver, wherein said interactive television content comprises a first portion which is trusted and a second portion which is not trusted;

receiving a notification in said interactive television receiver, wherein said notification identifies said first portion of said interactive television content as being trusted content;

said receiver performing one or more verification procedures relating to said second portion of said interactive television content; and

said receiver inhibiting performance of said one or more verification procedures in relation to said first portion of said interactive television content in response to detecting said notification;

wherein said one or more verification procedures comprise one or more of;

authenticating said interactive television content;

verifying that said interactive television content has not been tampered with during transmission;

verifying that said interactive television content has appropriate access rights; and

verifying that said interactive television content complies with a predetermined specification.

14. The method of claim 13 further comprising transmitting said interactive television content to said interactive television receiver and transmitting said notification to said interactive television receiver.

15. The method of claim 13 wherein said first portion of said interactive television content comprises content associated with an identified source.

16. The method of claim 15 wherein said source is selected from the group consisting of:

a bouquet;

a network;

a channel; and

a program.

17. The method of claim 15 wherein said source comprises a service provider.

18. The method of claim 13 wherein said first portion of said interactive television content comprises identified pieces of content.

19. The method of claim 18 wherein said pieces of content comprise at least a portion of an interactive television application.

20. The method of claim 18 wherein said first portion of said interactive television content is identified by one or more wildcards.

21. The method of claim 13 wherein said first portion of said interactive television content is identified by explicitly identifying said second portion of said interactive television content.

22. The method of claim 13 wherein said notification is transmitted to said receiver prior to transmitting said interactive television content to said receiver.

23. The method of claim 13 wherein said notification is transmitted to said receiver with said interactive television content.

24. The method of claim 13 wherein said notification is delivered via a trusted delivery channel.

25. The method of claim 24 wherein said trusted delivery channel comprises a conditional access EMM.

26. The method of claim 24 wherein said trusted delivery channel comprises a point-to-point channel.

27. The method of claim 26 wherein said notification is pushed to said receiver on said point-to-point channel.

28. The method of claim 26 wherein said notification is pulled by said receiver on said point-to-point channel.

29. The method of claim 13 wherein said notification is contained in signed data associated with an application.

30. The method of claim 13 wherein said notification has an expiration time associated therewith, wherein said notification is valid before said expiration date and invalid after said expiration time.

31. The method of claim 13 wherein said notification has a version number associated therewith, wherein a notification having a later version number supersedes a notification having an earlier version number.

32. A system configured to perform verification procedures on a selective basis, said system comprising:

an interactive television receiver having one or more signal receivers configured to;

receive interactive television content, said content comprising a first portion which is trusted and a second portion which is not trusted; and

a notification which identifies said first portion of said interactive television content as trusted data;

a memory, wherein said memory is configured to store said notification; and

a data verification unit coupled to said signal receivers and said memory;

wherein said data verification unit is configured to;

identify said first portion of said interactive television content as being trusted based on said notification;

perform one or more verification procedures relating to said second portion of said interactive television content; and

inhibit performance of one or more verification procedures in relation to said first portion of said interactive television content responsive to detecting said notification;

wherein said one or more verification procedures comprise one or more of;

authenticating said interactive television content;

verifying that said interactive television content has not been tampered with during transmission;

verifying that said interactive television content has appropriate access rights; and

verifying that said interactive television content complies with a predetermined specification.

33. The system of claim 32 wherein said notification comprises a first version of said notification, and wherein when said data verification unit receives a second version of said notification, said data verification unit is configured to replace said first version of said notification in said memory with said second version of said notification to identify said first portion of said interactive television content based on said second version of said notification.

34. A system configured to perform verification procedures on a selective basis, said system comprising:

an interactive television receiver having one or more signal receivers configured to;

receive interactive television content, said content comprising a first portion which is trusted and a second portion which is not trusted; and

a notification which identifies said first portion of said interactive television content as trusted data;

a memory, wherein said memory is configured to store said notification; and

a data verification unit coupled to said signal receivers and said memory;

wherein said data verification unit is configured to;

identify said first portion of said interactive television content as being trusted based on said notification;

perform one or more verification procedures relating to said second portion of said interactive television content; and

inhibit performance of one or more verification procedures in relation to said first portion of said interactive television content responsive to detecting said notification;

wherein said first portion of said interactive television content is identified by explicitly identifying said second portion of said interactive television content.

35. The system of claim 34 wherein said notification comprises a first version of said notification, and wherein when said data verification unit receives a second version of said notification, said data verification unit is configured to replace said first version of said notification in said memory with said second version of said notification to identify said first portion of said interactive television content based on said second version of said notification.

36. A system configured to perform verification procedures on a selective basis, said system comprising:

an interactive television receiver having one or more signal receivers configured to;

receive interactive television content, said content comprising a first portion which is trusted and a second portion which is not trusted; and

a notification which identifies said first portion of said interactive television content as trusted data;

a memory, wherein said memory is configured to store said notification; and

a data verification unit coupled to said signal receivers and said memory;

wherein said data verification unit is configured to;

identify said first portion of said interactive television content as being trusted based on said notification;

perform one or more verification procedures relating to said second portion of said interactive television content; and

inhibit performance of one or more verification procedures in relation to said first portion of said interactive television content responsive to detecting said notification;

wherein said notification is contained in a credential, wherein said credential is signed by a producer of said credential, and wherein said credential contains a certificate for verifying said producer'"'"'s signature and granting said producer a right to provide trusted content.

37. The system of claim 36 wherein said notification comprises a first version of said notification, and wherein when said data verification unit receives a second version of said notification, said data verification unit is configured to replace said first version of said notification in said memory with said second version of said notification to identify said first portion of said interactive television content based on said second version of said notification.

38. A system configured to perform verification procedures on a selective basis, said system comprising:

an interactive television receiver having one or more signal receivers configured to;

receive interactive television content, said content comprising a first portion which is trusted and a second portion which is not trusted; and

a notification which identifies said first portion of said interactive television content as trusted data;

a memory, wherein said memory is configured to store said notification; and

a data verification unit coupled to said signal receivers and said memory;

wherein said data verification unit is configured to;

identify said first portion of said interactive television content as being trusted based on said notification;

perform one or more verification procedures relating to said second portion of said interactive television content; and

inhibit performance of one or more verification procedures in relation to said first portion of said interactive television content responsive to detecting said notification;

wherein said notification includes a certificate associated with said first portion of said interactive television content.

39. The system of claim 38 wherein said interactive television content is delivered to a first one of said one or more signal receivers by a first medium and said notification is delivered to a second one of said one or more signal receivers by a second medium.

40. The system of claim 38 wherein said notification comprises a first version of said notification, and wherein when said data verification unit receives a second version of said notification, said data verification unit is configured to replace said first version of said notification in said memory with said second version of said notification to identify said first portion of said interactive television content based on said second version of said notification.

41. The system of claim 38 further comprising an interactive television transmitter and a transmission medium, wherein said interactive television transmitter is coupled to said interactive television receiver by said transmission medium and wherein said interactive television transmitter is configured to transmit said interactive television data to said interactive television receiver via said transmission medium.

42. The system of claim 38 further comprising a notification source coupled to said interactive television receiver, wherein said notification source is configured to transmit said notification to said interactive television receiver.

43. The system of claim 38 wherein said notification comprises data signed by a trusted party.

44. The system of claim 38 wherein said notification is contained in a credential, wherein said credential is signed by a producer of said credential, and wherein said credential contains a certificate for verifying said producer'"'"'s signature and granting said producer a right to provide trusted content.