Terminal for realizing television news live broadcast through wireless communication network

Abstract

The invention relates to a terminal for realizing television news live broadcast through a wireless communication network. The terminal comprises a shell, wherein an analog-to-digital (A / D) conversion circuit, a video / audio coder, a transport stream (TS) multiplexer, a transmission control protocol / Internet protocol (TCP / IP) wrapper and a network card are respectively connected with a central processing unit (CPU) around the CPU in the shell; the network card is connected with the CPU through a universal serial bus (USB) interface; a video / audio signal is sent to the A / D conversion circuit from an SDI video / audio interface or analog video / audio interface; the A / D conversion circuit sends a digital video / audio signal to the video / audio coder; the video / audio signal which is subjected to compression coding generates TS data stream in the TS multiplexer; and the TS data stream is sent to the TCP / IP wrapper to be wrapped into an IP data packet. Compared with the prior art, the terminal has the advantages of simple structure, live broadcast without an outside broadcasting vehicle, low live broadcast cost, a few limitations, no time and territory limitations, obvious advantages of television media communication, quickness and convenience.

Description

technical field [0001] The present invention relates to a terminal for realizing live broadcast of TV news by utilizing a wireless communication network, which is a news live mode terminal that transmits data streams to a media server at a designated address through a wireless communication network and the Internet, and reports on-site news at the first time. The device not only guarantees the quality of broadcast programs, but also greatly saves the high cost of using OB vans and renting satellites. Background technique [0002] The existing live broadcasts of news, sports, and large-scale events all use OB vans, which transmit the programs back to TV stations for broadcasting through microwave or satellite channels. Although direct reports can be realized on the spot, there are also many disadvantages. [0003] First, the cost of live broadcast equipment is high and there are many influencing factors. Live broadcast news reporters mainly use satellite OB vans or microwave...

AI Technical Summary

Problems solved by technology

[0002] The existing live broadcast of news, sports, and large-scale events all use OB vans, and the programs are transmitted back to the TV station for broadcast through microwave or satellite channels. Although direct reporting on the spot can be achieved, there are still many disadvantages

[0003] First, the cost of live broadcast equipment is high and there are many influencing factors

Live broadcast news reporters mainly use satellite OB vans or microwave launch vehicles when they go out for interviews. The purchase cost of vehicles is high, often tens of millions. Powerful channels may have their own OB vans, but more channels use All of them are OB vans shared by multiple channels and departments in the station, which is extremely inconvenient to call

Moreover, when the satellite OB vehicle is in use, the team is relatively large. In addition to reporters and cameras, many technical personnel such as broadcast directors and editors are also required. Strict equipment debugging and preparation are required before the live broadcast, which takes a long time. For breaking news , it is difficult for reporters to grab the first scene

OB vans are subject to a lot of space restrictions, and narrow spaces or large geographical spans are not suitable for live broadcasting

Therefore, when Minsheng News broadcasts live, it has more restrictions on the time, region, and content of the live broadcast topics. Generally, it chooses predictable news events that occur locally (the city where the channel is located) when the program is broadcast. , such as live broadcasting astrological spectacle on the central square of the city, or live broadcasting the travel situation of citizens on the "car-free day", etc., but it is difficult to respond quickly to sudden news events

[0004] Second, the response speed of the live broadcast is slow, and the live TV broadcast cannot reflect the advantages of the media

In order to make up for the regret that there is only sound but no picture, the program editor will choose the photos of the reporters on the spot, or spread the "earlier pictures" to deal with the live broadcast. The pictures are used for the live broadcast of the next period of the program, or for detailed reports in the next day's program. The limitation of the equipment makes the TV live broadcast a pity, and the visual communication advantages of the TV media cannot be fully reflected.

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