Method and system for transmitting authorized information and condition receiving system

Abstract

This invention discloses one method to send authorization information, which comprises the following steps: according user property path strategy sending the EMM data to relative EMMI according to role play strategy EMM data; due to self user property and play, not sending the user property EMM data to user property B network to reduce wide band or play circle and to avoid user data. The invention also provides one system and condition receive system for authorization.

Description

technical field [0001] The present invention relates to the fields of digital television (Digital Television, DTV), IPTV and mobile television (Mobile Television, MTV), in particular to a method and system for sending authorization information and a corresponding conditional access system. Background technique [0002] Usually, a site, such as a network company in a prefecture-level city or a provincial station, builds a complete digital TV system architecture. In the system architecture, the Conditional Access System (CAS) mainly completes the authorization control function; the user The management system (Subscribe Management System, SMS) is mainly responsible for user account opening / cancellation, program ordering / cancellation, billing and other functions; the core module is a part of CAS, integrated in the set-top box, and completes the processing of CAS-related messages at the terminal; Since digital TV is usually a one-way network, in order to ensure that users can rec...

AI Technical Summary

Problems solved by technology

[0003] In practical applications, there may be many MUXs and SCSs in an area, and EMMG sends the same EMM data to all MUXs, which usually leads to the following problems: cost waste, due to the limited number of users at the city level, usually The actual number of users is difficult to reach 100,000, but the capacity of a general CA system usually reaches the order of hundreds of thousands, which often results in waste of system capacity in each city and virtually causes investment losses for the bureau. This is especially true for the larger operators of several municipal networks

[0004] like figure 2 As shown, in order to solve the cost problem, currently A and B are usually self-built MUX and SCS respectively, but they are all connected to the same CAS, which effectively saves the number of CAS, and one CAS is shared between A and B. In this case, since the EMM message is broadcast in the whole network, the data sent by EMMG to the MUX is the same, so the network of A will have the data of the network of B, and the network of B will also have the data of the network of A. It leads to the waste of valuable bandwidth or the increase of carousel time. This problem is not obvious due to the small number of users in the initial stage of network construction. It will gradually become more obvious as the number of users increases.

Moreover, users in A and B can circulate freely. In the case of different tariffs in A and B, for example, the fee in A is higher, there may be a situation where the set-top box and smart card in B roam to A, resulting in loss of operator revenue

This issue requires additional action at additional cost

[0005] Another solution is to establish independent networks for the operators of cities A and B, including establishing their own CAS, which solves the problem that the networks of A and B have the data of the other party’s network, but A and B respectively need to build their own CAS, which increases the cost

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