Storied building visible intercommunication system

An intercom system and building technology, applied in CCTV systems and other directions, can solve the problems of long use, error-prone, complicated installation, etc., and achieve the effect of reducing inconvenience, reducing user costs, and simplifying wiring work.

Inactive Publication Date: 2009-06-17
叶志锋 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, not only the installation is complicated, but also the extension wiring is inconvenient, and it is easy to make mistakes. It has been used for a long time, and it will bring difficulties to maintenance or transformation.

Method used

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  • Storied building visible intercommunication system
  • Storied building visible intercommunication system
  • Storied building visible intercommunication system

Examples

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Embodiment Construction

[0011] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0012] figure 2 It is a block diagram of the building video intercom system of the present invention. The technical features that distinguish the system structure from the traditional technology are: the central management machine, the door management machine, the floor distributor, and the indoor unit all include modulation interface circuits, and 3-core wiring is used between each control unit. The 3-core wiring includes the 2-core system core bus L_BUS formed by modulating the voice, communication data and power modulation superposition technology of the interface circuit, and the 1-core video cable completes the multi-line integration function of the communication trunk line, reaching 3 The purpose of core wiring. During the mutual communication of each control unit, the modulation interface circuit performs DTMF encoding on the digital data sent by th...

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Abstract

The invention relates to a building visible intercommunication system, wherein the central manager, the door manager, the floor distributor and the indoor machine all have modulate interface circuits; the controllers are connected by three-core wires; said wire comprises two-corn bus L_BUS and one-core video wire; the modulate interface circuit processes DTMF code on the communication data sent between units, to modulate the code signal and voice signal to the power source, to be superposed on the system core bus L_BUS, and demodulate the received information from the system core bus L_BUS to drive relative unit. The invention can reduce three wires than present one, with simple operation.

Description

technical field [0001] The present invention relates to a communication device, in particular to a building video intercom system. Background technique [0002] With the improvement of national living conditions, the application of building video intercom system is becoming more and more extensive. However, the currently known building intercom system technology still rests on the basis of multi-line intercom. The voice lines, data lines and power lines of the intercom system are all separated. The intercom extension needs to carry out a large amount of wiring which is very tedious. E.g figure 1 The block diagram of the existing building intercom system is shown, from which it can be seen that 1-core video cable, 2-core voice cable, 2-core data cable, and 2-core power cable need a total of 7 cores from the door management machine to the floor distributor. Wiring: From the central management machine to the door management machines of each building in the community, a total...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/18
Inventor 唐智杰叶志锋李芳
Owner 叶志锋
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