Multimedia broadcasting system and method

Abstract

The invention provides a multimedia broadcasting system and method and in particular relates to a method for providing safe broadcasting information in multimedia broadcasting information. The method comprises the following steps: extracting broadcast channel control information and service content characteristic from the multimedia broadcasting information; generating service content characteristic signature information according to the service content characteristic; generating safe broadcasting signature information according to the broadcast channel control information and the service content characteristic signature information; and generating safe broadcasting information according to the safe broadcasting signature information and the service content characteristic signature information, wherein the safe broadcasting information is inserted into the multimedia broadcasting information based on certain rules. The invention only needs to carry out digital signature on the characteristic information of the broadcasting contents, thereby effectively reducing the data calculation amount of data signature.

Description

technical field [0001] The invention relates to digital television technology, in particular to a digital television broadcasting system and method. Background technique [0002] With the development of science and technology, digital TV technology has gradually been widely used because of its advantages such as high transmission quality, wide range, and fast speed. However, the problem that arises with digital TV technology is how to ensure the security, integrity and real-time of information. [0003] Digital signature is a relatively common technology used to enhance information security. Digital signature technology refers to the mathematical transformation of messages to generate a set of specific data. When this set of data is transmitted together with the message, the receiver can verify the identity of the sender of the message, which is similar to the role of signature in the traditional sense. Common digital signature technologies are generally implemented using...

AI Technical Summary

Problems solved by technology

However, since the broadcasting and television system has high requirements for real-time performance, if it is necessary to digitally sign broadcast content, high-performance processing equipment must be used to complete a large amount of data calculation in the process of digital signature, thus making the cost of the entire multimedia broadcasting system high, low stability

Furthermore, since digital signatures are very sensitive to bit errors, when using a wireless broadcast channel with a high bit error rate to transmit multimedia content, it is easy for the terminal to fail to play due to normal channel bit errors.

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