Central processor and mobile multimedia broadcasting device, system and method

Abstract

The invention provides a central processor, a mobile multimedia broadcasting device, a mobile multimedia broadcasting system and a mobile multimedia broadcasting method. A server, according to the second identifier information and authentication request of the mobile multimedia broadcasting device, authenticates the mobile multimedia broadcasting device to determine if the mobile multimedia device is qualified to acquire a service key; the server generates an encrypted second service key according to the authentication request and second service information which are output by the central processor, and outputs the encrypted second service key to the central processor in the mobile multimedia device; the central processor decrypts the encrypted second service key first and then triggers a channel demodulating unit according to the decrypted second service key so as to acquire second service data; and the central processor uses the decrypted second service key to decrypt the second service data so as to decrypt and play encrypted mobile multimedia service data in real time. The device, the system and the method of the invention can improve the real-time and flexibility of a mobile multimedia service.

Description

technical field [0001] The invention relates to electronic information technology, in particular to a central processing unit, a mobile multimedia broadcasting device, system and method. Background technique [0002] With the continuous development of multimedia receiving and playing technology, the multimedia receiving system is not limited to the use of wired networks such as cables and light to realize the receiving and playing of multimedia services. The mobile multimedia broadcasting system installed in mobile terminals such as buses, subways, and mobile phones can pass wireless digital Broadcast multimedia network (DMB), cellular mobile communication network and other wireless networks realize the reception and playback of multimedia services, which greatly meets the needs of users to watch anytime and anywhere. [0003] figure 1 It is a schematic structural diagram of an existing mobile multimedia broadcasting system. Combine now figure 1 , the structure of the exi...

AI Technical Summary

Problems solved by technology

[0006] Although the existing mobile multimedia broadcasting device installed with a decryption lock can decrypt and play encrypted mobile multimedia services, when the user is in a different region, the user needs to input the code card of each region, and frequently checks the device with the decryption lock installed. The unlocking operation of the mobile multimedia broadcasting device is relatively complicated, and the encrypted mobile multimedia service cannot be decrypted and played in real time, and the encrypted mobile multimedia service cannot be flexibly customized according to the needs of users

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