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City underground passenger information system of using DVB digital TV technique based on IP network

A digital TV and IP network technology, applied in the field of subway passenger information system, can solve the problems of inability to carry out live TV broadcast, poor system upgrade and expansion ability, poor real-time controllability, etc., and achieve good priority control and partition control ability, practicability And the effect of strong scalability and increased system reliability

Active Publication Date: 2008-11-26
CHINA ELECTRONICS TECH GRP CORP NO 14 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0033] The system has poor real-time controllability, low picture quality, small information coverage, poor system upgrade and expansion capabilities, short video transmission distance, poor broadcast security, inaccurate train arrival information, inability to broadcast live TV, and no dynamic display technology Achieving Broadcast-Quality Video Playout

Method used

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  • City underground passenger information system of using DVB digital TV technique based on IP network
  • City underground passenger information system of using DVB digital TV technique based on IP network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0058] Embodiment: as shown in Figure 1, the subway passenger information system based on the DVB digital television technology of IP network.

[0059]Using the IP / DVB encapsulation mechanism, the MPEG-2TS stream is packed into the IP packet, and then sent to the corresponding transmission channel, transmitted to each station through the transmission network, and restored to video and audio signals and displayed on the display terminal.

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PUM

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Abstract

The system comprises: a control center subsystem, a train station subsystem and a transmission subsystem. The control center subsystem comprises a digital video server, a broadcast control work-station, a network administrator / operator server, a central database server, a network encoder, a media material gateway, an audio and video switching matrix, an audio and video D / A and A / D converter, a digital TV device, a external signal source, a integration management software and a transmission interface. The train station subsystem comprises traveler guiding board, interface board, communication controller, power communication controller, control computer, traveler message sending out controller, station broadcast server, plasma display, and audio / video D / A converter. The train station subsystem broadcasts the real time information from the control center through the transmission subsystem, and adds its own information in it.

Description

technical field [0001] The invention relates to a computer management information system for urban subways, in particular to a subway passenger information system based on IP network DVB digital television technology. Background technique [0002] At present, the passenger information system of some urban subways is a passenger information system based on network streaming computer display technology. Its basic composition, main functions, main indicators, system upgrade and expansion capabilities, video transmission mode, picture quality, display effect, broadcast security, and control management mode. [0003] 1) Basic composition [0004] The passenger information system based on network streaming computer display technology is mainly composed of control center equipment, station equipment and transmission network. [0005] The main equipment of the center includes: data server, multimedia video server, broadcast control workstation, network management server, operator ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/08H04N7/52H04L29/00
Inventor 严德树孙红李文明张坤朱斌尚震
Owner CHINA ELECTRONICS TECH GRP CORP NO 14 RES INST
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