Method for implementing access and distribution of digital audio/video signal in premise access network

Abstract

The invention discloses a method for implementing access and distribution of a digital audio / video signal in a premise access network. The method comprises that: an audio / video signal lower than 100MHz is subjected to up-conversion to be merged with other digital audio / video downlink radio frequency signals into a path of electric signals in a downlink direction, and the path of electric signals are converted into optical signals and are shunted for output; a user service interface unit converts the received optical signals comprising audio / video information into electric signals, and the electric signals are subjected to filter amplification, are fed to an antenna through a feed line and are radiated to user equipment through; the user service interface unit filters and performs low-noise amplification on uplink audio / video radio frequency signals received by the antenna and converts the signals into optical signals for output in an uplink direction; and a service centralizing unit respectively converts at least one path of received audio / video information-containing optical signals into electric signals to be merged into a path, shunts a plurality of paths of audio / video radio frequency signals bearing the same service and transmits the audio / video radio frequency signals to each network information source, and the network information source selects a respectively corresponding network signal.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a technology for realizing the integration of digital voice broadcasting and digital television in a customer premises access network, and in particular to a method for realizing the access and distribution of digital audio and video signals in the premises access network. Background technique [0002] After the first generation of amplitude modulation (AM) broadcasting and the second generation of frequency modulation (FM) broadcasting have been developed and widely used, with the rapid development of electronic technology, the third generation of audio broadcasting - Digital Audio Broadcasting (DAB) It has also developed and matured in the past 30 years. DAB can provide sound, broadcasting, additional packet data services, video, dynamic signs, presentations and interactive data close to CD quality, and has many advantages such as anti-noise, anti-interference, a...

AI Technical Summary

Problems solved by technology

This not only causes a great waste of resources, but also is not convenient for operation and maintenance, increases operation and maintenance costs, and is not easy to expand and upgrade

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