摘要:
According to the present invention there is provided a datacast distribution system which allows for the distribution of movies , music, games, application software, and the like using a new or existing terrestrial digital video broadcasting (DVB-T) network or the like.
摘要:
The present invention provides methods, apparatuses, and systems for delivering protected multi-media content to a receiving device. Protected multi-media content and key information are inserted in a same time slice burst. Multi-media content is processed into content datagrams, in which each content datagram is associated with a corresponding component. Key information may be processed as a keystream with key datagrams or may be included in one or more components. A content datagram may be encrypted with an associated key. A receiving device receives the time slice burst with the content datagrams and the key information. The receiving device subsequently decrypts the content datagrams with the key information. Key datagrams may be associated with a higher priority level than content datagrams. Consequently, a receiving device can process a key datagram in order to extract a key before routing associated content datagrams to a message stack.
摘要:
IP data is multicast from one or more servers (4) in sessions through a network (N) comprising a plurality of routers (R) in a multicast tree to transmission sites (S) of a DVB-T network, where the data is encapsulated by IPEs 28 and transmitted unidirectionally to mobile user equipment (UE). A controller (38) builds up a schedule of session data concerning sessions transmitted by the servers (4) and instructs the IPEs to send join messages to receive data for selected sessions. The join messages may include the address of the source and may be transmitted in good time before the start of the session
摘要:
The present invention provides methods, apparatuses, and systems for delivering protected multimedia content to a receiving device. Portions of protected multi-media content and associated key information are inserted in a same time slice burst. Multi-media content is processed into a plurality of content datagrams, in which each content datagram is associated with a corresponding component. Key information may be processed as a keystream that is logically separate from the components. A content datagram may be encrypted with an associated key. A receiving device receives the time slice burst with the plurality of content datagrams and associated key datagrams of the keystream. The receiving device consequently decrypts the plurality of content datagrams. Also, key information may be processed as key datagrams that are included with at least one component, in which each component comprises an associated plurality of content datagrams.
摘要:
Systems and methods that allow a user to establish a Multicast Group Messaging (MGM) session wherein messages are delivered via multicast, and wherein the user may exercise control over the parties that can receive the multicast messages. The systems and methods further provide for dispatching messages for multicast in conjunction with the session, and for receiving messages multicast in conjunction with the session.
摘要:
IP data is multicast from one or more servers (4) in sessions through a network (N) comprising a plurality of routers (R) in a multicast tree to transmission sites (S) of a DVB-T network, where the data is encapsulated by IPEs 28 and transmitted unidirectionally to mobile user equipment (UE). A controller (38) builds up a schedule of session data concerning sessions transmitted by the servers (4) and instructs the IPEs to send join messages to receive data for selected sessions. The join messages may include the address of the source and may be transmitted in good time before the start of the session
摘要:
Systems and methods wherein a data entity is dispatched as a series of packets, with some of the packets being dispatched in an encrypted manner and others of the packets being dispatched in an unencrypted manner.