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IP code stream switching method and device

A code stream switching and code stream technology, applied in the field of communication, can solve the problems of poor intelligence and low detection accuracy

Inactive Publication Date: 2019-01-15
北京市博汇科技股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides an IP code stream switching method and equipment to solve the problems of low detection accuracy and poor intelligence in the prior art

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  • IP code stream switching method and device
  • IP code stream switching method and device

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Embodiment Construction

[0043] Embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0044] Wherein, it should be pointed out that in the prior art, even if the embedded board detects that the target port has an IP stream input, if the IP stream has a PMT (Program Map Table, program mapping table) loss, and / or, PAT (Program Association Table, program association table) is lost, and PID (Packet Identifier, packet identifier) ​​bandwidth is out of bounds. When the corresponding program is played, there may be serious problems such as signal instability, or only sound but no image. Therefore, in order to improve the accuracy of IP code stream detection, the technical solutions of the embodiments of the present invention are proposed.

[0045] The embodiment of the present invention provides an IP code stream switching method, which uses the PID bandwidth corresponding to the IP code stream as a parameter to detect whether the IP code stream is abnorm...

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Abstract

The embodiment of the invention discloses an IP code stream switching method and device. The method includes that when at least two IP code streams are received, calculating a packet identifier (PID)bandwidth corresponding to each of the at least two IP code streams; separately detecting whether each of the PID bandwidths is within its corresponding target threshold range; determining an output code stream from the IP code stream whose PID bandwidth is within the target threshold range. The method of the embodiment of the present invention uses the PID bandwidths corresponding to the IP codestreams as parameters to detect whether the IP code streams are abnormal, and can detect more abnormal types so as to improve detection accuracy. In addition, by a DSP module and the cooperation of aFPGA module and a DSP module, the method can automatically switch the IP code streams, thereby making the IP code stream switching intelligent and improving the user experience.

Description

technical field [0001] The embodiments of the present invention relate to the field of communication technologies, and in particular to an IP code stream switching method and device. Background technique [0002] As a multimedia player with low signal loss and good reception, digital TV has been widely used in people's work and life. Wherein, the digital TV inputs a digital TV signal through an STB (Set Top Box, digital video conversion box), which is usually called a set-top box or a set-top box. As a digital TV terminal playback device, the STB is used to receive digital TV signals, demodulate and descramble the received digital TV signals to obtain video digital signals, decode the video digital signals, and finally output the decoded signals to digital television. [0003] Based on the above description, in order to ensure the playback quality of digital TV, various TV service operators as digital TV signal providers often use multiple signal sources. Processed IP cod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/442H04N21/4402H04N21/438H04N21/426H04N21/45
CPCH04N21/426H04N21/438H04N21/440281H04N21/44209H04N21/4516
Inventor 裴丹丹徐洪亮乐晋德朴根华杨京赵泽发高晓娜张家斌杨波黄广宇黄勇林朱克俊张蔚之刘至洋刘爱娟漆鸿波卢东唐剑韦坚丘君良赖东民廖维梅张坤
Owner 北京市博汇科技股份有限公司
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