Methods for broadcasting and receiving scrambled multimedia programmes, terminal and network headend for said methods

A technology for multimedia programs and network headers, which is applied in broadcast broadcasting, broadcasting equipment, broadcasting system control, etc., and can solve problems such as increasing bandwidth and increasing numbers.
CN101480016BActive Publication Date: 2012-07-18VIACCESS SA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
VIACCESS SA
Publication Date
2012-07-18

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Abstract

The invention concerns a method for broadcasting a plurality of multimedia programmes generated by operators of different services, whereby one or more network headends broadcast (in 102) on a reference multicast address a list associating identifiers of service operators with at least one first level service multicast address, the reference multicast address being previously known to all the terminals capable of receiving and multiplexing broadcast multiplexed contents and said reference multicast address being different from all the broadcasting multicast addresses.
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Description

technical field

[0001] The present invention relates to a method of broadcasting and receiving scrambled multimedia programs, and a terminal and a network head end for realizing the method. Background technique

[0002] More precisely, there is a method of broadcasting multimedia programs produced by different service operators through a network. In the existing broadcast method:

[0003] Each network head-end multiplexes one or more multimedia programs scrambled with the control word and the password of the control word to obtain the multiplexed content, and then broadcasts the multiplexed program to the terminal through the network content; and

[0004] • In parallel, one or more network headends broadcast service messages specific to each service operator in order to modify the operation of each terminal, thereby authorizing or disabling the terminal's access to multimedia programmes.

[0005] There is also a method of receiving a multimedia program broadcast by the ab...

Claims

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