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Method for receiving ule/mpe data from satellite in embedded terminal

An embedded terminal and satellite data technology, applied in electrical components, transmission systems, etc., can solve the problems of operators' PC operation level requirements and high cost, and achieve the effect of low cost, cost reduction, and flexible and simple interface operation

Active Publication Date: 2016-01-20
郑州威科姆科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, satellite data reception mostly used the method of PC plus satellite receiving card, which was costly and required the operator’s PC operation level

Method used

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  • Method for receiving ule/mpe data from satellite in embedded terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: see figure 1 , The method of the present invention for receiving ULE / MPE data from satellites in an embedded terminal, in an embedded Linux terminal, by combining the DVB equipment (Tuner and demux) in the embedded Linux terminal and the Linux network card driver interface, a virtual one Network card equipment, using DVB equipment to receive ULE (one-way lightweight encapsulation) / MPE (multi-protocol encapsulation) encapsulated data from satellites, and extract the IP data (the payload in the IP packet is UDP multicast data) and forward it to IP protocol stack, and then receive and process the corresponding IP data according to business needs in the application.

Embodiment 2

[0021] Example 2: see figure 1 The method of the present invention for receiving ULE / MPE data from satellites in an embedded terminal is different from the first embodiment. It further discloses a method for receiving ULE (unidirectional lightweight packaging) / MPE ( Multi-protocol encapsulation) encapsulated data steps:

[0022] Step 1: After the terminal is powered on, start the operating system and load the virtual network card driver. When loading the driver, use the PID of the TS stream (transport stream) where the ULE / MPE data is located as the input parameter;

[0023] Step 2: Configure an IP address for the virtual network card device;

[0024] Step 3: The Tuner device is used to select and receive the modulated signal of a certain frequency, set the frequency point parameter where the ULE / MPE data is located for the Tuner device, and use the demultiplexing device in the virtual network card driver to filter out the ULE or MPE data after the frequency point is locked , And f...

Embodiment 3

[0026] Embodiment 3: The method of the present invention for receiving ULE / MPE data from a satellite in an embedded terminal, a virtual network card device is responsible for data reception by writing a driver program, and the data comes from the filtered output of a demux device. The difference between this embodiment and the previous embodiment is:

[0027] When the virtual network card driver is loaded, the PID of the satellite data to be received is used as the input parameter, and these parameters are used as the condition for filtering the data by the demultiplexing device, and each PID corresponds to a channel of IP data.

[0028] If the received satellite data is encapsulated according to the MPE specification, the tableId needs to be used as a condition for further filtering the data, so that the data filtered by the demultiplexing device is the data segment of the DSM-CC structure, and the data is processed according to the format in the specification Analyze, take out th...

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Abstract

The invention relates to a method for receiving satellite data in an embedded terminal (a satellite set top box). A method for receiving ultra low emission / multiple protocol encapsulation (ULE / MPE) data from a satellite in an embedded terminal comprises the following steps: making virtual network card equipment by combining digital video broadcasting (DVB) equipment (Tuner and demux) with a linux network card driver interface in an embedded Linux terminal; receiving ULE / MPE packaged data from the satellite by using the DVB equipment, extracting internet protocol (IP) data from the ULE / MPE packaged data, and transmitting the IP data to an IP stack; and receiving and processing corresponding IP data in an application program according to service demands. According to the method, the DVB equipment and the linux network card driver interface in the set top box are combined, virtual special network card equipment is built, the IP data carried in the ULE / MPE data from the satellite is transmitted to the IP stack, and the corresponding IP data is received and processed in the application program according to service demands; and the set top box terminal is low in cost, and the interface is operated flexibly and easily.

Description

Technical field [0001] The invention relates to a receiving mechanism of ULE / MPE satellite data in a set-top box terminal, in particular to a method for receiving ULE / MPE data from a satellite in an embedded terminal (satellite set-top box). Background technique [0002] Satellite communication has the characteristics of wide coverage area and high bandwidth capacity. These characteristics show obvious advantages in rural, mountainous and remote areas that are not conducive to the laying of wired networks. my country's satellite digital TV broadcasting system mainly adopts the DVB-S standard. In addition to basic digital TV broadcasting services, DVB-S bandwidth resources can also be used to carry data services, such as my country’s cultural resource sharing project and distance education for rural party members and cadres. Projects and remote education projects in rural primary and secondary schools use satellite bandwidth resources. These data are encapsulated in MPE or ULE form...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L29/12
Inventor 贾小波张永强赵宇峰王鹏丽马凌云张鹏李伟
Owner 郑州威科姆科技股份有限公司