Content distribution system and method

Abstract

The invention provides a content distribution system and method. A content distribution management module outputs a content distribution command to a content playing module according to a distribution strategy, and outputs frequency point information to a content receiving caching module; a content playing module reads contents from a content library according to the content distribution command, and broadcasts the read contents and the frequency point information to an IPQAM (Internet Protocol Quadrature Amplitude Modulation); the IPQAM converts a data stream of the received contents into a radio frequency (RF) signal according with the transmission standard of a hybrid fiber coaxial-cable (HFC) network, and broadcasts the RF signal through the HFC according to the frequency point information; and a content receiving caching module receives the RF signal corresponding to the frequency point information through the HFC according to the received frequency point information and stores the RF signal into a content format supported by a video server for obtaining the contents matched with a request of the terminal by the video server. By adopting the method and the system provided by the invention, the distribution efficiency can be increased under the condition that the distribution QoS (Quality of Service) is ensured.

Description

technical field [0001] The present invention relates to digital television technology, in particular to a content distribution system and method. Background technique [0002] The basic idea of ​​Content Delivery Network (CDN) is to avoid bottlenecks and links on the Internet that may affect the speed and stability of data transmission, so as to make content transmission faster and more stable. By placing node servers all over the network to form a layer of intelligent virtual network on the basis of the existing Internet, the CDN system can integrate the network traffic and the connection of each node, load status, distance to users and response time in real time. information, redirect the user's request to the service node closest to the user, the purpose is to enable the user to obtain the desired content nearby, solve the network congestion situation, and improve the response speed of the user visiting the website. [0003] figure 1 It is a schematic diagram of the str...

AI Technical Summary

Problems solved by technology

[0006] The existing content distribution network concentrates all content distribution instructions and content distribution data streams on the Internet protocol (internet protocol, IP) network in the content distribution network, which increases the transmission pressure of the backbone network; When the network sends a large amount of content to each edge node at the same time, if the multicast technology of the IP network is used for sending, the quality of service (Quality of Service, QoS) of the distribution cannot be guaranteed. When sending, the bandwidth requirements of the backbone network are high, the distribution efficiency is low, and the content cannot be distributed to each edge node in a timely manner

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