DVB digital TV delay broadcast system

Inactive Publication Date: 2004-07-14
朱新建
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two main types of existing delay broadcast equipment, one is to record audio and video signals directly on tape or disk without compression, which requires a large storage capacity for recording per unit time and cannot be delayed for a long time; The other is to compress the video and audio signals, but the internal processing is not in the standard DVB TS stream file format
Their common feature is that they are all designed for the original analog broadcasting system, and it is not convenient to insert programs. When used in a DVB-based digital TV system, coding equipment must be added and the broadcasting quality will be reduced.

Method used

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  • DVB digital TV delay broadcast system
  • DVB digital TV delay broadcast system
  • DVB digital TV delay broadcast system

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Embodiment Construction

[0021] according to figure 1 With the system of the present invention with the above-mentioned structure, the image receiving card 1 and the image broadcasting card 2 can be respectively selected from commercially available products that include the circuit and whose models are Galaxy100 and Galaxy120. The product features of the present invention are: fully compatible with DVB related standards; high-speed transport stream input and output; input signal detection, monitoring, adjustment; transport stream packet length adjustment; output transport stream code rate adjustment; dual ASI output ports, hardware realizes empty packets Insertion; supports both continuous and burst transmission modes; provides a variety of program material or advertisement insertion.

[0022] technical parameter:

[0023] 1. Input:

[0024] Interface: ASI, quantity 1,

[0025] Physical interface: 75Ω BNC,

[0026] Attenuation: 17dB,

[0027] The maximum cable length is 300M (according to the cab...

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Abstract

This invention relates to DVB digital TV time delay play system composed of computer, picture receiving card 1 and a picture play card. The receiving card 1 includes DVB/ASI input interface, DVB/ASI receiver, an input buffer, a master unit, a state incicator, and bus interface, the picture play card constitutes DVB/ASI output interface, DVB/ASI play adaptor, output buffer, a synchronous controller, an output control unit, and bus interface. This invention can conveniently play the given digital TV programs at any delay time and add programs in the process freely.

Description

technical field [0001] The invention is a digital TV delay broadcasting system, which is mainly used in platform equipment for ensuring the safety of digital TV (DVB) broadcasting. Background technique [0002] The delayed broadcast system is mainly to ensure the safety of the broadcast. It can delay the rebroadcast program for a period of time to deal with emergencies during the broadcast, and can also insert advertisements according to the needs of the broadcast. , trailers, etc., and use the edited or on-site materials to replace the program periods with wrong content. There are two main types of existing delay broadcast equipment, one is to record audio and video signals directly on tape or disk without compression, which requires a large storage capacity for recording per unit time and cannot be delayed for a long time; The other is to compress the video and audio signals, but the internal processing is not done in the standard DVB TS stream file format. Their common ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/015H04N7/08
Inventor 朱新建
Owner 朱新建
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