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Conversion method from transmission stream to China mobile multimedia broadcasting multiplex protocol

A technology of multimedia broadcasting and China Mobile, which is applied in the transmission system, pulse modulation TV signal transmission, TV, etc. It can solve the problems of inability to switch TS programs and achieve the effect of protecting equipment

Inactive Publication Date: 2008-05-14
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the direct conversion of TS programs into CMMB (China Mobile Multimedia Broadcasting) programs cannot be realized in the existing broadcast television network

Method used

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  • Conversion method from transmission stream to China mobile multimedia broadcasting multiplex protocol
  • Conversion method from transmission stream to China mobile multimedia broadcasting multiplex protocol
  • Conversion method from transmission stream to China mobile multimedia broadcasting multiplex protocol

Examples

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Embodiment Construction

[0027] like figure 1 As shown, the conversion from TS to multiplexed frames is to extract the video PES (packed elementary stream) package and audio PES (packed elementary stream) package in the TS stream respectively according to the PID (packet identifier) ​​in the TS, and then remove the PES header, take out the ES (Elementary Stream) packet, and repackage it into video data unit and audio data unit in the multiplexing frame. Usually, one PES packet can be divided into one or more video data units and audio data units. At the same time, the PTS (presentation time stamp) or DTS (decoding time stamp) of the Option header of the PES is correspondingly converted into the display time of the video data block and the audio data block, so as to realize the synchronization of video and audio playback.

[0028] like figure 2 As shown, the encoder outputs the H.264 transport stream and sends it to the transcoder. The transcoder does not need to convert the source compression algori...

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Abstract

The invention discloses a conversion method from the TS into the CMMB Reuse Protocol, which comprises the following steps: taking out the video PES or audio PES in a time-stamp respectively according to the grouping identifier in the TS; taking out the PES package from the MPEG transport package; taking out the PTS or DTS from the PES packet header and transforming into the time-stamp in the frames, the TS is used to set the presentation time of the video data or the audio data and to realize the synchronization of the video and audio broadcasting; according to the requirements of CMMB Reuse Protocol filling the video frequency ES package into the video unit or filling the audio frequency ES package into the audio unit to form a reuse frame within the set time limit; judging whether the data encapsulation within the set time limit is finished or not according to the time-stamp in the reuse frame; encapsulating and sending the reuse frame if the data encapsulation in the setting time is finished.

Description

technical field [0001] The invention relates to a mobile multimedia broadcasting or mobile phone TV technology, in particular to a conversion method from a transmission stream to a China Mobile multimedia broadcasting multiplexing protocol. Background technique [0002] Mobile multimedia broadcasting is a multimedia playback technology that has emerged in recent years. With a handheld terminal, you can watch TV while moving at high speed. The terminal receives the program list through the wireless protocol, and can select the channel it has the right to watch, so that it can receive the multimedia data of the selected channel, and realize watching TV on the mobile terminal. [0003] The air data transmitted by the system is divided into different channels. The data of each channel includes three types: video, audio and auxiliary data. The terminal can receive the relevant data, and realize the normal broadcasting of the TV through the player on the terminal. [0004] There...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/52H04N7/26H04L29/06H04N21/647
Inventor 沈灿张建强李嵘王志英晏祥彪陈军文海龙
Owner ZTE CORP
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