Setup method and setup system for TV program stream secrete key of mobile terminal

Abstract

The invention discloses a method for arranging the secret key of the TV program stream of a mobile terminal. The method of the invention comprises the steps that time intervals are divided on the TV service platform of the mobile terminal and a time mark is arranged for each time interval; a program stream secret key mark is generated by using a time mark corresponding to a moment when the program stream secret key takes effect and is broadcasted together with the program stream and the program stream secret key; a validity period of a service secret key is generated according to time intervals where the beginning moment and the finishing moment of a required TV program are respectively recorded when an authorization request is received from the mobile terminal. The invention also discloses a system for arranging the secret key of the TV program of the mobile terminal and the system comprises scramblers communicated with each other and a TV service platform of the mobile terminal, wherein, the TV service platform of the mobile terminal comprises a time mark arranging module, and a program stream secret key mark arranging module and a service secret key validity period generating module which are respectively connected with the time mark arranging module. By adopting the method and the system provided by the invention, a receiving terminal is guaranteed to be capable of correctly deciphering the program stream secret key by using the service secret key, thus avoiding the additional expenditure of system resources.

Description

technical field [0001] The invention relates to a method and a system for setting a TV program stream key of a mobile terminal, in particular to a method and a system for associating a TV program key of a mobile terminal with time, and belongs to the technical field of mobile communication. Background technique [0002] The mobile terminal TV (mobile phone TV) based on the broadcast mode refers to loading the receiving module of the mobile digital TV on the mobile terminal, so that the mobile terminal can receive the audio and video content of the broadcast digital TV program. Mobile TV has two business forms: one is the one-way broadcast form for multimedia broadcasting and information release to handheld terminals through the one-way downlink channel of the broadcast network; the other is the two-way interactive service form combined with the uplink channel of the mobile communication network . For the first business form, since users cannot choose the program content, th...

AI Technical Summary

Problems solved by technology

Since the service platform cannot know in advance which program stream keys the scrambler will use, it cannot guarantee that the service keys sent by the service platform to the mobile terminal will be able to decrypt the program stream keys within the specified time period, thus causing users to be unable to correctly Decrypt program stream, bring bad experience

In order to ensure that the authorization validity period defined by the service key can decrypt the program stream key, it is necessary for the mobile TV service platform to perform signaling interaction with the scrambler, and trace back the validity of the program stream key corresponding to the effective time of the service key. Time, and then adjust the effective time of the service key accordingly, which undoubtedly increases the burden on system resources, and also causes a delay in the feedback of user requests

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