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VOD interactive method and system

A video interaction and on-demand system technology, applied in the field of broadcasting, can solve problems such as the sharp increase in network construction costs and the inability to fully utilize the upstream bandwidth

Pending Publication Date: 2020-09-11
上海云则信息技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this problem can be solved by upgrading the network technology to 10G or 100G GPON / EPON system, the simple network upgrade will not only lead to a sharp increase in network construction costs, but also the uplink bandwidth after the system upgrade cannot be fully utilized

Method used

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  • VOD interactive method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Such as figure 1 As shown, a VOD video interactive on-demand system based on IP broadcast technology, including video VOD server, two-way network, broadcast data stream multiplexing optical transmitter (DLT), network receiving tuner (IP Tuner), set-top box (STB), Optical Distribution Network (ODN). in,

[0046] VOD server and set-top box constitute the video interactive on-demand business module;

[0047] The two-way network and the network receiving tuner form the VOD request and response two-way channel module, which is used for the uplink on-demand request and downlink response reply between the VOD server and the set-top box; the two-way network can be composed of any physical transmission medium or two-way access network realized by technology .

[0048] The broadcast data stream multiplexes the optical transmitter, the optical distribution network and the network receiving tuner to form an IP unidirectional broadcast module, which is used to unidirectionally br...

Embodiment 2

[0074] This embodiment relates to a VOD video interactive on-demand system. The second implementation mode can be compatible with the existing HFC network based on IPQAM technology to provide VOD services. The network system such as image 3 shown. The entire radio and television network system is divided into a fiber-coaxial hybrid network (HFC) area and a fiber-to-the-home network (FTTH) area.

[0075] In the HFC network area, the network uses IPQAM technology to provide VOD services and DVB live broadcast services, and the on-demand request and response between the set-top box (STB) and the VOD server is completed through the two-way access channel of HFC; DVB live broadcast, VOD on-demand and system service information ( SI / EPG) is broadcast to the STB by IPQAM technology, and the STB demodulates the IPQAM RF signal according to the received frequency point information to obtain VOD programs on demand.

[0076] In the fiber-to-the-home area, on the original fiber-to-the-hom...

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Abstract

The invention discloses a VOD interactive method. The method comprises the following steps: a set top box sends a VOD request to a VOD server through an optical fiber bidirectional network; after receiving the VOD request, the VOD server sends a request response result to the set top box through the bidirectional network; when the VOD server sends a message that the VOD request is successful, theVOD server instructs the set top box to receive the VOD program stream at a specific frequency point, and push the VOD program stream to a broadcast data stream multiplexing optical transmitter, and the broadcast data stream multiplexing optical transmitter broadcasts the VOD program stream to a network receiving tuner in a corresponding multicast channel through an optical distribution network; and the network receiving tuner filters out the VOD program and forwards the VOD program to the set top box for playing. The VOD interactive system based on the IP broadcast technology has good bandwidth expansibility, the downlink bandwidth of a conventional optical fiber bidirectional access system can be greatly expanded, and the bandwidth requirement of high-quality VOD services in the future is met.

Description

technical field [0001] The invention relates to the technical field of broadcasting, in particular to a VOD video interactive on-demand method and system. Background technique [0002] Interactive TV VOD (Video on Demand) is a brand-new video service of the cable TV network. It gets rid of the time and space constraints of traditional live TV and provides users with viewing experience different from traditional TV. Users can perform video-on-demand, time-shifted TV, music on-demand, etc. according to their own wishes. The VOD video on demand system is mainly composed of three parts: VOD front-end processing system, transmission network and user set-top box. However, with the development of video technology, high-quality VOD video services pose new challenges to network bandwidth. For example, high-quality video services such as 4K, 8K, and AR / VR urgently need greater downlink bandwidth. Therefore, how to effectively implement high-speed The application of large-scale high-...

Claims

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Application Information

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IPC IPC(8): H04N21/63H04N21/61H04N21/643H04N21/472H04N21/2385
CPCH04N21/2385H04N21/47202H04N21/6106H04N21/631H04N21/64322
Inventor 秦幸坚李力王春华
Owner 上海云则信息技术有限公司
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