摘要:
The invention provides a solution for synchronizing cameras connected via a telecommunication network for capturing a multi-view session controlled by a synchronization module. The synchronization module provides a multi-view capturing parameter determined from capturing parameter received from the at least one camera. Said multi-view capturing parameter is provided to the cameras participating in the session capturing in order to synchronize the capturing of the multi-view session. Further a camera device is proposed which inform the synchronization module about its disposability and about the capturing parameter of the camera. Said camera receives a multi-view capturing parameter which is used for capturing the session.
摘要:
A method for establishing a secured communication channel, between a first processing component and a second processing component; the method comprising executing a digital rights management agent on a processing unit, the digital rights management agent being configured to enforce permissions associated with digital content based on a digital rights management protection mechanism; receiving, by the digital rights management agent at least a security data item, the security data item including a session key data item; verifying authenticity of the received session key data item by the digital rights management agent using said digital rights management protection mechanism; providing the verified session key data item by the digital rights management agent to at least the second processing component; establishing a secured communication channel between the first and second processing components using at least the provided session key data item.
摘要:
For streaming data in a mobile communication network, a descriptive file (100) of a stream (200) is provided. The descriptive file (100) comprises a list (110) of delivery source identifiers, e.g. URIs, for unicast delivery of data segments (210) of the stream. A broadcast indicator (120) is selectively added to the descriptive file (100) so as to indicate whether broadcast delivery of the data segments (210) is available. Adding the broadcast indicator (120) and initiating the broadcast delivery may be accomplished on the basis of a popularity of the stream.
摘要:
Synchronizing cameras, connected via a telecommunication network, for capturing a multi-view session can be controlled by a synchronization module. The synchronization module determines a multi-view capturing parameter from a capturing parameter that is received from at least one camera. The multi-view capturing parameter is provided by the synchronization module to the cameras participating in the capturing session in order to synchronize the capturing of the multi-view session. Further, a camera device informs the synchronization module of the disposability and capturing parameter of the camera. The camera receives the multi-view capturing parameter for use in capturing the session.
摘要:
Imposing one or more usage constraints on digital content involves communicating a digital content data item to a digital content receiver system. The digital content data item includes the digital content and a usage constraint data item different from a digital license data item, or a reference to the usage constraint data item, the use case item being indicative of the one or more usage constraints.
摘要:
A technique for determining usage of encrypted media content is described. A method implementation of this technique comprises the steps of obtaining a short-term key for decrypting the media content, obtaining a long-term key for decrypting the short-term key, decrypting the short-term key based on the long-term key, decrypting the media content based on the decrypted short-term key, and logging a parameter relating to the short-term key as a basis for determining media content usage. The short-term key may be a Traffic Encryption Key, TEK, and the long-term key may be a Service Encryption Key, SEK.
摘要:
The embodiments of the present invention relate to apparatuses, in terms of a client device (110) and a server (120) and to methods in the client device (110) and in the server (120) respectively for enabling a user to consume content provided by a content provider. According to the method in the client device (120) the method comprises: assembling a request for rights for consuming a content and indicating in the request which content to consume; determining if an upgrade key, associated with the content, is present in the client device; including, in such a case, in the request, an identifier of the upgrade key that is associated with the content, sending the request to the content provider; receiving, a response comprising an encrypted rights object; decrypting the encrypted rights object and starting to use the rights object for consuming the content.
摘要:
A method of handling media content comprises providing a set of one or more first layer data items that are to be accessible via a first media track. Each first layer data item is decodable to be rendered as a portion of the media content. Moreover, a set of one or more second layer data items is provided that are to be accessible via at least one second media track, each second layer data item being decodable to be rendered in combination with at least one decoded first layer data item as an enhanced portion of the media content. With each second layer data item a track reference index is associated that identifies the first media track via which the first layer data items are accessible. Then, the second layer data items and the associated track reference indices are encrypted for being transmitted to a content recipient.
摘要:
A technique for determining usage of encrypted media content is described. A method implementation of this technique comprises the steps of obtaining a short-term key for decrypting the media content, obtaining a long-term key for decrypting the short-term key, decrypting the short-term key based on the long-term key, decrypting the media content based on the decrypted short-term key, and logging a parameter relating to the short-term key as a basis for determining media content usage. The short-term key may be a Traffic Encryption Key, TEK, and the long-term key may be a Service Encryption Key, SEK.
摘要:
Techniques for compressing and decompressing license information for Digital Rights Management are described. A method implementation of a technique of creating for a plurality of client devices or client device groups compressed license information comprises the steps of creating a template and a table. The table comprises at least one first license part common to licenses for the plurality of client devices or client device groups and one or more placeholders for one or more second license parts specific for a dedicated client device or client device group. The table comprises, for each client device or client device group and for a given placeholder, replacement information specific for that client device or client device group. The method further comprises sending the template and table for delivery as compressed license information to the client devices or client device groups.