Digital multimedia broadcasting system layer structure code access method

A multimedia broadcasting and access method technology, applied in the field of digital multimedia broadcasting system layer structure code access, can solve the problems of audio, video and various data service data compatibility and integration difficulties, etc.

Inactive Publication Date: 2008-04-09
杨越岗
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The present invention solves the problem of difficult data compatibility and integration of audio, video and va

Method used

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  • Digital multimedia broadcasting system layer structure code access method

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Embodiment Construction

[0013] In the process of digital mobile multimedia transmission and playback, it is necessary to encode (or compress and encode) the data sources obtained from various channels and various types of programs as basic layer encoding to generate effective data, and embed the system layer structure before the effective data code, the system layer construction code includes the verification mode code, data source type code and effective data format identification code arranged in sequence. The data in the data packet is arranged in the order of synchronization word, system layer construction code, valid data and check code. The generated data packet is shown in Figure 2.

[0014] The present invention encapsulates the data of these different encoding formats into data packets in the system layer format, and becomes a general data format that can be transmitted by using the DAB network, and rationally integrates and regulates the data with audio and video multiplexing data and vario...

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Abstract

In order to solve the problem of data compatibility and integration of audio/video and other data services in the digital mobile multimedia broadcast during the transmission play and terminal reception processes, the invention provides a construction code access method in a digital multimedia broadcast system layer. The method comprises firstly coding the data of contents of various types of programs to generate basal layer-coded valid data. The invention is characterized in that the construction coding operation of the system layer is performed when needing transmission play, that is, the construction code of the system layer is embedded between the synchronous word and the valid data; and the construction code of the system layer comprises data source type code and data format marking code in ordered arrangement.

Description

technical field [0001] The invention relates to a method used in the encoding and transmission process of digital multimedia broadcasting data. Background technique [0002] "Watching audio and video programs with TV and mobile phones, receiving data information such as electronic maps, intelligent traffic navigation, stock market finance, electronic newspapers and Internet pages" has become a bright spot in the IT industry that has attracted worldwide attention. Many people place their hopes on 3G mobile communication technology and satellite broadcasting technology. [0003] However, the third-generation mobile communication (3G) technology is still based on point-to-point communication technology. In a 3G network system with a million-user level, hundreds of concurrent users receiving audio and video programs may cause network congestion or even It's a total breakdown. Although the communication bandwidth is more than 300K, if it is necessary to support audio and video ...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L29/06H04N7/52
Inventor 杨越岗
Owner 杨越岗
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