Multiple channel complex method for MPEG-2 single programme transmission

An MPEG-2, multiplexing technology, applied in the direction of pulse modulation TV signal transmission, TV, electrical components, etc., can solve the problems of high cost, poor portability, etc., to achieve good effect, simple implementation, good promotion and application prospects. Effect

CN1684524AInactive Publication Date: 2005-10-19XIDIAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2005-10-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

This invention relates to a MPEG-2 single program transmission stream (TS) multiplexing method, which multiplexes the multiple single program TS to a multi-program TS to be output, first of all, the program specific information (PSI) and a transmission rate collection unit pre-processes the signals taking part in the multiplexing, extracts PAT, PMY and essential stream (ES) public packet identifying symbol(PID) information and gets the transmission code rate of each TS based on PAT-PMT-ES hierarchies, then, the reconstruction and re-map unit of PIS reconstructs the PSI information and re-maps the PCR-PID of each audio-video PID and the program reference clock to enable the decoding end to identify the programs in TS after multiplexing and obtaining correct clock information. The multiplexing unit computes the multiplexed transmission rate, each single program TS is multiplexed to a TS to be output by the method of plugging empty packet and re-arraying TS packets of different programs without changing the PCR value of the original program stream.
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Description

technical field

[0001] The invention belongs to the technical field of digital TV digital compression, and in particular relates to a method for multiplexing moving image compression encoding MPEG-2 transport streams. Background technique

[0002] With the development of digital modulation technology and digital compression technology, in the process of digital TV transmission, in order to make full use of spectrum resources, it is usually necessary to transmit multiple digital TV programs in an analog channel with a specified bandwidth. In order to achieve this purpose, in Multiple single-program transport streams must be multiplexed into a multi-program transport stream before modulation.

[0003] At present, there are many technologies for realizing the multiplexing of single-program transport streams through hardware, but the multiplexing of transport streams using hardware has the following two defects: First, the portability of the technology is poor. Finally, the mul...

Examples

Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with accompanying drawing:

[0021] see figure 1 , the present invention includes program specific information PSI and transmission rate collection, program specific information PSI reconstruction and remapping, and multiplexing three major operation units. First, receive and store the single-program TS stream 1, single-program TS stream 2, ... single-program TS stream n in the hard disk or through the SPI / ASI of the computer and store them in the storage device, and extract them through the program-specific information PSI and transmission rate collection unit The program information and transmission rate of each program; then according to these information, the program information of multiple programs is generated in the reconstruction and remapping unit of the program specific information PSI, and then multiplexed with the TS stream data of each single program participating in the multiple...