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Method for implementing interactive communication in point-to-multipoint communication system

A two-way communication and interactive technology, applied in the field of point-to-multipoint two-way communication system and its realization of interactive communication, can solve problems such as high cost

Inactive Publication Date: 2004-06-09
北京银河弘芯电子有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] The purpose of the system and method involved in the present invention is to solve the high cost problem caused by the dual-single-channel receiver scheme adopted in the existing standards

Method used

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  • Method for implementing interactive communication in point-to-multipoint communication system
  • Method for implementing interactive communication in point-to-multipoint communication system
  • Method for implementing interactive communication in point-to-multipoint communication system

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Embodiment Construction

[0034]A frequency-division multiplexing point-to-multipoint two-way communication system involved in the present invention has a plurality of single-frequency transmitters in its server front-end equipment, and its user terminal equipment has a single-frequency transceiver, and the user terminal equipment transmits its current single-frequency The downlink channel frequency of the receiver is notified to the server front-end equipment through the uplink channel, and the server front-end equipment multiplexes the data stream to be delivered to the user equipment into the TV program data stream of the current channel where the user equipment is located and sends it out. The server front-end device mentioned here can be the aforementioned interactive controller 7, and the uplink path can be an uplink path established by a telephone modem, or a path established by a cable return path. The point-to-multipoint system can be the aforementioned cable TV network, or the LMDS (Local Mult...

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Abstract

An interactive communication method for point-to-multipoint communication system is disclosed. A bidirectional channel between the front-end of server and multiple user terminals is created over cable and / or wireless network. Said front-end of server receives the information which is transmitted by user terminal over upstream channel and expressed the current downstream channel where the user terminal works. According to the information, the data stream is transmitter to user terminal by complexing the downstream channel.

Description

technical field [0001] The invention relates to a point-to-multipoint communication system, in particular to a point-to-multipoint two-way communication system in a cable television network and a method for realizing interactive communication. Background technique [0002] At present, most of the existing cable TV networks adopt the point-to-multipoint broadcast communication method, that is, the front-end equipment of the cable TV station broadcasts multi-channel TV and other data broadcast programs, each program occupies a different radio frequency channel, and all programs are synthesized by frequency division Afterwards, it is transmitted to all client terminals in the cable network of the same tree structure, and the client terminal box or TV selects a program in a certain channel by means of frequency selection (through the front-end tuner), demodulates it, and sends it to to the user interface (TV screen). For digital TV programs, usually multiple sets of program dat...

Claims

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Application Information

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IPC IPC(8): H04N7/015H04N7/10H04N7/14
Inventor 杜聚龙
Owner 北京银河弘芯电子有限责任公司
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