METHOD AND DEVICE FOR DETERMINING A UNIQUE CONTENT INSTANCE IDENTIFIER, UNIQUE CONTENT INSTANCE IDENTIFIER AND METHOD AND DEVICE FOR MANAGING CONTENT LICENSES

• US 20100058069A1
• Filed: 01/09/2008
• Published: 03/04/2010
• Est. Priority Date: 01/10/2007
• Status: Active Grant

• Current Assignee: Sony Deutschland GmbH (Sony Group Corp.)
• Original Assignee: Sony Deutschland GmbH (Sony Group Corp.)
• Inventors: Szucs, Paul
• Granted Patent: US 8,527,753 B2
• Time in Patent Office: Days
• US Class Current: 713/189
• 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 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/4345 Extraction or processing of SI, e.g. extracting service information from an MPEG stream
• CPC Class Codes: H04N 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• CPC Class Codes: H04N 21/43615 Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals home Audio Video Interoperability [HAVI] data switching networks H04L12/2805
• CPC Class Codes: H04N 21/4433 Implementing client middleware, e.g. Multimedia Home Platform [MHP]
• CPC Class Codes: H04N 21/8352 involving content or source identification data, e.g. Unique Material Identifier [UMID]

Abstract

A method and a device for determining a unique content instance identifier of a content item, wherein the content item is received by a receiving device and provided to a content management system and includes an original content identifier of an original identification scheme. The method: defines a data structure of the unique content item identifier depending on the original identification scheme, the data structure including a first, a second and third part, wherein the size of at least one of the second and third parts depends on the original identification scheme; stores a code in the first part, wherein the code uniquely identifies the original identification scheme; stores the original content identifier, a derivative thereof, and/or a device identifier identifying the receiving device in the second part; and stores a freely allocatable value in the third part, such that no duplicate unique content instance identifiers are generated by the device.

Claims

1-23. -23. (canceled)

24. A method for determining a unique content instance identifier (CIID) of a content item, wherein said content item has been received by a receiving device and provided to a content management system and includes an original content identifier of an original identification scheme, the method comprising:

defining a data structure of said unique content item identifier (CIID) depending on said original identification scheme, said data structure comprising a first, a second, and a third part, wherein a size of at least one of said second and third parts depends on the original identification scheme;

storing a code in said first part, wherein said code uniquely identifies said original identification scheme;

storing said original content identifier, a derivative thereof, and/or a device identifier, identifying said receiving device in said second part; and

storing a freely allocatable value in said third part, such that no duplicate unique content instance identifiers (CIID) are generated by said device.

25. A method for determining a unique content instance identifier (CIID) according to claim 24, wherein an original content identifier, determined by an original content provider or an original content delivery system, is stored at least as a part of said second part.

26. A method for determining a unique content instance identifier (CIID) according to claim 24, wherein

said device identifier is determined for the receiving device and said device identifier is stored at least as a part of said second part.

27. A method for determining a unique content instance identifier (CIID) according to claim 24, wherein

in a case said original identification scheme is a digital video broadcast event specific identification, a combination of the DVB-SI fields original_network_id, service_id and event_id is stored at least as part of said second part.

28. A method for determining a unique content instance identifier (CIID) according to claim 24, wherein

in a case said original identification scheme is a digital video broadcast service specific identification, a combination of the DVB-SI fields original_network_id and service_id is stored at least as part of said second part.

29. A method for determining a unique content instance identifier 15 (CIID) according to claim 24, wherein

in a case said original identification scheme is a conditional access (CA) specific identification, a DVB-CA system identifier is stored as part of said second part.

30. A method for determining a unique content instance identifier (CIID) according to claim 24, wherein in case said identification scheme is a DVB-MHP specific identification, a DVB-MHP Application identifier is stored at least as part of said second part.

31. A method for determining a unique content instance identifier (CIID) according to claim 24, wherein

in a case said original identification scheme is an International Standard Audiovisual Number (ISAN) scheme, an ISAN is stored at least as part of said second part.

32. A method for determining a unique content instance identifier (CIID) according to claim 24, wherein

in a case said original identification scheme is a truncated ISAN identification, a truncated ISAN is stored at least as part of said second part.

33. A method for determining a unique content instance identifier (CIID) according to claim 24, wherein

only the device identifier is stored as said second part.

34. A method for determining a unique content instance identifier (CIID) according to claim 24, wherein

the size of said unique content instance identifier (CIID) is 16 byte.

35. A method for determining a unique content instance identifier (CIID) according to claim 24, wherein

the size of said first part is one byte.

36. A method according to claim 24, wherein said content management system is adapted to be a content management and protection system, and

a content license (CL) is created by a device, comprised within said system, for said content item to manage usage of said content item within said system, and

a device identifier of the device which has created the first content license (CL) for said content item is stored as a Content License Creator (CLC) field in the content license (CL), such that this value is not changed by any compliant device within said content management and protections system.

37. A method according to claim 35, wherein

a device which copies a content item within said system determines a new content instance identifier (CIID′

), applying a same allocation scheme as determined by said first part of the original content instance identifier (CIID), thus setting at least one of the second or third part of the new content instance identifier (CIID′

) to new values, for the copy of said content item, and determines a new content license (CL′

), but does not change the content license creator (CLC) field set by the device, which has created the first content license (CL).

38. A method according to claim 35, wherein

if additional usage rights for a content item are requested by a user, the system allows the device to initiate a process of acquiring new rights, via a new content license for said content instance, by sending a message to said device, which has created the first content license (CL), identified as the content license creator (CLC) for that content instance, and said device initiates a communication with the content provider about said new rights.

39. A device for determining a unique content instance identifier (CIID) of a content item, wherein said content item has been received by a receiving device and provided to a content management system and comprises an original content identifier of an original identification scheme, comprising a system controller adapted to:

apply a data structure of said unique content item identifier (CIID) depending on said original identification scheme, said data structure comprising a first, a second, and a third part, wherein a size of at least one of said second and third parts depends on the original identification scheme;

store a code in said first part, wherein said code uniquely identifies said original identification scheme;

store said original content identifier, a derivative thereof, and/or a device identifier, identifying said receiving device in said second part;

store a freely allocatable value in said third part, such that no duplicate unique content instance identifiers (CIID) are generated by said device.

40. A device for determining a unique content instance identifier (CIID) according to claim 39, wherein

said system controller is further adapted to store said original content identifier, determined by an original content provider or an original content delivery system, at least as a part of said second part.

41. A device for determining a unique content instance identifier (CIID) according to claim 39, wherein

said system controller is further adapted to determine a device identifier of said receiving device and to store said device identifier at least as a part of said second part.

42. A unique content instance identifier (CIID) of a content item, wherein said content item has been received by a receiving device and provided to a content management system and comprises an original content identifier of an original identification scheme, comprising:

a data structure depending on said original identification scheme, said data structure comprising a first, a second, and a third part, wherein a size of at least one of said second and third parts depends on the original identification scheme;

said first part comprising a code, wherein said code uniquely identifies said original identification scheme;

said second part comprising said original content identifier, a derivative thereof, and/or a device identifier, identifying said receiving device in said second part; and

said third part comprising a freely allocatable value such that no duplicate unique content instance identifiers (CIID) exist.

43. A unique content instance identifier (CIID) according to claim 42, wherein

said original content identifier, determined by an original content provider or an original content delivery system, is at least a part of said second part.

44. A unique content instance identifier (CIID) according to claim 42, wherein

a device identifier of the receiving device is at least a part of said second part.

45. A method for managing content licenses (CL) in a content management and protection system, wherein content items are handled, comprising:

creating by a device, comprised within said system, a content license (CL) for a content item to manage the usage of said content item within said system; and

storing a device identifier of the device which has created the first content license (CL) for said content item as a Content License Creator (CLC) field in the content license (CL), such that this value is not changed by any compliant device within said content management and protections system.

46. A device for managing content licenses (CL) in a content management and protection system, wherein content items are handled, comprising:

a system controller adapted to;

create a content license (CL) for a content item to manage the usage of said content item within said system, and

store a device identifier of said device, which has created the first content license for said content item, as a Content License Creator (CLC) field in the content license (CL), such that this value is not changed by any compliant device within said content management and protections system.