Data transmission method, emission system and terminal in broadcasting system
A technology of broadcasting system and transmission method, applied in the field of transmitting system, terminal, and data transmission method, can solve the complexity of CA scrambling and descrambling, restrict the introduction and application of new data services, and cannot effectively support CA scrambling design, etc. question
Inactive Publication Date: 2013-01-02
新奇点智能科技集团有限公司
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Problems solved by technology
[0008] (2) The multiplexing frame converts RTP data packets, which cannot effectively support RTP-based CA scrambling design, making CA scrambling and descrambling very complicated
Both the formulation of data service standards and the development of terminal manufacturers for a certain data service consume precious time, manpower and material resources
Such a model restricts the launch and application of new data services
Method used
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[0088] The technical solution of the present invention will be described in more detail below with reference to the drawings and embodiments.
[0089] The present invention provides a data transmission method, a transmission system and a terminal in a broadcasting system. Aiming at the problems of complex data transmission, poor compatibility and scalability of streaming media data and data services, a unified method is used to transmit various types of data. Transmission, its core idea is: for streaming media data (comprising the authorization control information ECM of streaming media data packet and / or conditional viewing CA), the streaming media data packet or ECM formed after encoding will not be unpacked, directly encapsulated into Packet multiplexing frame; for ESG (Electronic Program Guide) and / or other data service content, it is first converted into a web page file format, then encapsulated into RTP (Real-time Transport Protocol) package, and further encapsulated into...
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The invention discloses a data transmission method in a broadcast system, which comprises that: streaming media data is packaged by a sending terminal of the broadcast system according to a personal inherent data format; frame header information is written to generate a packet multiplexing frame; the sending terminal of the broadcast system converts ESG and / or other data service contents to website files, then website file data is packaged to a RTP packet; the RTP packet is packaged further; the frame header information is added to generate the packet multiplexing frame; the sending terminal of the broadcast system transmits the packet multiplexing frame to a wireless terminal through a broadcast network. The invention also discloses an emission system and a terminal in the broadcast system; the emission system comprises a modulator, an emitter, a coder and a multiplexer; the terminal comprises a receiving module, a network protocol converting module and an accessing module. The invention realizes the transmission of various data in the broadcast system in a simple, feasible and uniform mode, contains multiple streaming media data and multiple data services and has strong universality and expandable capacity.
Description
technical field [0001] The invention relates to the field of wireless transmission, in particular to a data transmission method, transmission system and terminal in a broadcast system. Background technique [0002] In the existing broadcasting system, audio and video data is usually transmitted in a multiplexed manner: a broadcast channel frame is composed of multiple multiplexed frames, and each multiplexed frame is composed of a multiplexed frame header, one or more multiplexed subframes and padding composition. As shown in FIG. 1 , each multiplexed subframe is composed of a subframe header, a video segment, an audio segment and a data segment, wherein the subframe header further includes some control information and reserved bits. Usually, one multiplexed subframe is a 1-second data stream of a set of video and audio programs, wherein the size of the video stream is 384kbit, and the size of the audio stream is 64kbit. [0003] Based on the existing multiplexing frame st...
Claims
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IPC IPC(8): H04N21/235H04N21/236H04N21/2381H04N21/2383H04N21/6437
Inventor 张辉王西强吕义柱郭洛玮邹畅捷陈文生李慧镝王志飞谭靖张晓伟黄月生魏英钦
Owner 新奇点智能科技集团有限公司