Method and device for determining a unique content instance identifier, unique content instance identifier and method and device for managing content licenses

摘要

A method and a device for determining a unique content instance identifier (CIID) of a content item (5). wherein said content item (5) has been received by a receiving device (X) and provided to a content management system (e.g. DVB-CPCM) and comprises an original content identifier of an original identification scheme, said 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 (1), a second (2) and third (3) part, wherein the size of at least one of said second (2) and third parts (3) depends on the original identification scheme;storing a code in said first part (1), wherein said code uniquely identifies said original identification scheme;storing said original content identifier, a derivative thereof, and/or a device identifier (4) identifying said receiving device in said second part (2);storing a freely allocatable value in said third part (3), such that no duplicate unique content instance identifiers (CIID) are generated by said device (X).