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A 4k ultra high definition broadcast system

A broadcasting system, ultra-high-definition technology, applied to the components of TV systems, TVs, and color TVs, etc., can solve the problems of potential safety hazards in broadcasting, signal failure to output normally, etc., and achieve an easy-to-expand network architecture Effect

Active Publication Date: 2021-08-10
CHINA CENTRAL TELEVISION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Both the main and backup links are designed with SDI structure. When the SDI equipment fails, the signals of the two links cannot be output normally, and there are potential safety hazards in broadcasting.

Method used

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  • A 4k ultra high definition broadcast system
  • A 4k ultra high definition broadcast system
  • A 4k ultra high definition broadcast system

Examples

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Embodiment 1

[0024] An embodiment of the present application provides a 4K ultra-high-definition broadcasting system, which will be described below.

[0025] figure 1 It shows a schematic structural diagram of the 4K ultra-high-definition broadcast system in the embodiment of the present application. As shown in the figure, the system may include: a baseband video and audio link and an IP video and audio link; wherein,

[0026] The baseband video and audio link adopts the 4-wire digital component serial interface SDI transmission mode, and the IP video and audio link adopts the Internet Protocol IP transmission mode; the baseband video and audio link and the IP video and audio link output The 4K ultra-high-definition broadcast signals are mutual backups; the baseband video and audio link and the IP video and audio link are kept in sync by adjusting the preroll delay parameters.

[0027] The 4K ultra-high-definition mentioned in the embodiment of the present application refers to a display...

Embodiment 2

[0062] An embodiment of the present application provides a 4K ultra-high-definition broadcast system with a multi-dimensional hybrid architecture, which will be described in detail below with an example.

[0063] The main system is a baseband video and audio link, using 4*3G SDI;

[0064] The backup system is an IP video and audio link, which is used as the overall backup of the main system and adopts the IP method.

[0065] The IP video and audio link and the baseband video and audio link are synchronized and mutually backed up by adjusting the preroll delay parameters. The backup IP video and audio link strictly follows SMPTE2022-7, and realizes seamless protection of signal routing by building two completely independent scheduling systems.

[0066] The main-standby system adopts the method of video server device heterogeneity and matrix heterogeneity, and realizes the broadcast of two different signals (main channel SDI, backup channel IP) by controlling two different 4K u...

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Abstract

A 4K ultra-high-definition broadcast system, comprising: a baseband video and audio link and an IP video and audio link; wherein, the baseband video and audio link adopts a 4-wire digital component serial interface SDI transmission mode, and the IP video and audio link The road adopts the Internet protocol IP transmission mode; the 4K ultra-high-definition broadcast signal output by the baseband video and audio link and the IP video and audio link are mutual backups; the baseband video and audio link and the IP video and audio link Keep in sync by adjusting the preroll delay parameter. This application adopts the SDI+IP video and audio link method. Due to the addition of the IP video and audio link, the broadcast security is more guaranteed, and the IP transmission method has more advantages than the traditional SDI, such as format-independent and easy-to-use network architecture. Expansion, high-bandwidth-oriented development trend, portable interaction metadata, etc.

Description

technical field [0001] The present application relates to the technical field of radio and television, and in particular, to a 4K ultra-high-definition broadcast system. Background technique [0002] At present, 4K ultra-high-definition TV channels are broadcast using a full baseband video and audio link, and the video and audio system uses a 4-wire digital component serial interface (SDI, serial digital interface) transmission method. Usually there are master, backup, third backup, and spacer signals, a total of four signals are broadcast after 4*1 switching. The system is equipped with baseband four-selection one switching equipment, equipped with Quad-Link 3G-SDI 4K signal dispatching technical monitoring matrix, technical testing equipment, multi-screen splitter, etc., and all core equipment are baseband signal input and output. [0003] In summary, the problems in the prior art are: [0004] Both the main and backup links adopt the SDI structure design. When the SDI e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/43H04N5/268
CPCH04N5/268H04N21/4307
Inventor 宋蔚陈策明刘晶晶张娟吴俊邓楠赵凯赵旭韩冲郭旭刚郭伟李婵宋雪丹
Owner CHINA CENTRAL TELEVISION
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