KR20070051517A - One-line integrated digital broadcasting system - Google Patents

Abstract

The present invention relates to an integrated broadcasting system, comprising: a head-end device for synthesizing a signal obtained by modulating a signal of an individual multimedia medium, public address broadcast, or cable television into an R / F signal; A transmitter for modulating and transmitting an R / F signal transmitted from the head end device into an optical signal; A wavelength multiplexing device for multiplexing and transmitting the wavelength of the optical signal transmitted from the transmitter, the wavelength of the Internet optical signal input from the Internet signal optical converter, and the wavelength of the optical signal input from the digital recording device via the receiver; An optical fiber amplifier for amplifying and transmitting the optical signal transmitted from the wavelength multiplexer; An optical distribution unit for distributing an optical signal transmitted from the optical fiber amplifier; Including an integrated broadcast relay terminal for demodulating and outputting the optical signal input from the optical distribution box into individual multimedia media, public address broadcasting, cable television, closed circuit television, video signals, audio signals, and data signals corresponding to the Internet, respectively. It provides an integrated broadcasting system.

Therefore, the present invention has a very useful effect that can provide integrated multimedia services such as cable television, closed circuit television, Internet access, etc. in addition to public address broadcasting, construction and maintenance can be made easily and easily.

PA, Cable TV, Closed Circuit Television, Internet, Integrated Broadcasting Service

Description

Integrated broadcasting system {One-line integrated digital broadcasting system}

1 is a schematic diagram showing a conventional PA system;

2 is a block diagram showing an integrated broadcasting system according to the present invention;

3 is a partially enlarged block diagram illustrating an installation example of an integrated relay broadcasting terminal connected to a plurality of optical distribution boxes of the integrated broadcasting system according to the present invention;

4 is a block diagram showing another integrated broadcasting system according to the present invention;

<Explanation of symbols for the main parts of the drawings>

100: head and device 110: modulator

120: FM modulator 130: filter

140: video modulator 150: node management system

160: synthesizer 200: transmitter

300: wavelength multiplexer (CWDM) 400: Internet signal optical converter

500: digital recording device 510: receiver

600: fiber optic amplifier (EDFA) 700: light distribution

800: integrated broadcast relay terminal 810: optical distribution board

820: wavelength multiplexer (CWDM) 830: receiver

840: Splitter 850: Filter

860: PA receiver 861: communication board

870: optical modulator 880: optical receiver

C: optical cable

The present invention relates to an integrated broadcasting system, and more particularly, to an integrated broadcasting system capable of efficiently integrating and providing various multimedia services such as individual multimedia, cable television, closed circuit television, and the Internet in addition to public address broadcasting.

In general, PA system is installed in buildings such as schools, businesses, buildings, and apartments to provide broadcasting services such as announcement and music broadcasting. Recently, PA system is installed in conference rooms, lecture rooms, exhibition halls, memorials halls, etc. Increasingly, applications are being expanded.

1 is a schematic diagram illustrating such a public address system, and as shown, audio signals according to public address are transmitted to a speaker of each terminal through a heat resistant vinyl insulated cable (HIV cable), and a video signal is a coaxial cable ( It is transmitted to each terminal terminal through coaxial cable, and other data signals are transmitted to terminals such as computers through twisted-pair cable called a LAN cable.

However, the conventional PA system is a method in which audio signals, video signals, and data signals are transmitted through different types of cables. Therefore, the facility work for constructing the PA system is complicated, the cost is increased, and the maintenance is very high. Inefficient problems such as frequently made.

In addition, in the conventional public address system, signal loss occurs due to the use of different types of cables, and an amplifier has to be installed in a distribution box or the like to preserve such losses. Therefore, there is a problem that greatly increases the facility cost of the PA system, in particular the problem that can not provide integrated management of audio signal, video signal, data signal.

In addition, the conventional public address system cannot provide a surveillance management service using a closed circuit television (CCTV), a cable television (CATV) service, and an internet access service together. In order to provide such a service, separate lines and equipment are separately provided. There was a problem that must be constructed, and a problem that could not be integrated management together with PA.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems in the related art, and an object of the present invention is to integrate individual multimedia, cable television, surveillance security service through a closed circuit television, Internet access, etc. in addition to public address broadcasting. It is to provide an integrated broadcasting system that can provide management.

In addition, another object of the present invention is to provide an integrated broadcast system that can be easily and easily constructed and maintenance for the integrated construction of public address, individual multimedia, cable television, closed circuit television, the Internet and the like.

Integrated broadcasting system of the present invention for achieving the above object is a head-end device for synthesizing the signal modulated by the signal of the individual multimedia media, public address, cable television to R / F signal; A transmitter for modulating and transmitting an R / F signal transmitted from the head end device into an optical signal; A wavelength multiplexing device for multiplexing and transmitting the wavelength of the optical signal transmitted from the transmitter, the wavelength of the Internet optical signal input from the Internet signal optical converter, and the wavelength of the optical signal input from the digital recording device via the receiver; An optical fiber amplifier for amplifying and transmitting the optical signal transmitted from the wavelength multiplexer; An optical distribution unit for distributing an optical signal transmitted from the optical fiber amplifier; Including an integrated broadcast relay terminal for demodulating and outputting the optical signal input from the optical distribution box into individual multimedia media, public address broadcasting, cable television, closed circuit television, video signals, audio signals, and data signals corresponding to the Internet, respectively. Characterized in that made.

Hereinafter, the configuration of the integrated broadcasting system of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram illustrating an integrated broadcasting system according to the present invention, and FIG. 3 is a partially enlarged block diagram illustrating an installation example of an integrated relay broadcasting terminal connected to a plurality of optical distribution boxes among the integrated broadcasting systems according to the present invention. As shown, the integrated broadcasting system of the present invention is largely a head-end device 100, a transmitter 200, a wavelength multiplexing device 300, an internet signal optical conversion device 400, a digital recording device 500, a receiver ( 510, the optical fiber amplifier 600, the optical distribution box 700, and the integrated broadcast relay terminal 800.

First, the head end device (HeadEnd) 100 modulates a video signal, an audio signal, and a data signal into an RF signal, and in detail, modulators for modulating the video signal and the audio signal of individual multimedia media such as conference rooms, lecture rooms, and exhibition halls ( 110, an FM modulator 120 for modulating a voice signal according to public address, a filter 130 for filtering a synthesized broadcast signal and an Internet signal, The video modulator 140 modulates the video sound signal of the cable television into an R / F signal, and combines the individual multimedia, public address, and various RF signals of the cable television into a single RF signal and transmits the signal to the transmitter 200. Combiner 160 is composed of.

The transmitter 200 transmits the R / F signal transmitted from the synthesizer 160 to the wavelength multiplexer 300 by modulating the R / F signal into an optical signal.

Carrier Wavelength Division Multiplexer (300) is a multiplexer function to multiplex and transmit the wavelength of the optical signal for high-speed transmission, in the present invention, the transmitter 200, the Internet signal optical converter 400, and a separate digital The receiver 510 via the video signal and the control signal of the recording apparatus 500 is connected with the optical cable C, and the wavelength of the optical signal is multiplexed and transmitted to the optical fiber amplifier 600.

The receiver 510 may be not only a receiver having a normal reception function, but also a receiver that simultaneously performs a reception function for a video signal and a transmission function for a control signal.

An optical fiber amplifier (Erbium Doped Fiber Amplifier, 600) amplifies the optical signal transmitted from the wavelength multiplexing device 300 and transmits it to the optical distribution box 700, through which the individual multimedia, public address, cable television, closed circuit television Video signals, audio signals, and data signals, such as the Internet, can all be transmitted through one optical cable (C) instead of individual lines.

The optical distribution box 700 distributes the optical signal transmitted from the optical fiber amplifier 600 to several lines and then transmits the signals to the integrated broadcasting relay terminal 800. Through this, individual multimedia, public address, cable television, and closure Video signals, audio signals, and data signals of a circuit television can be transmitted simultaneously at the same time.

The integrated broadcast relay terminal 800 demodulates and outputs the optical modulation signals of video signals, sound signals, and data signals corresponding to individual multimedia, public address, cable television, and the Internet inputted from the optical distribution box 700. .

The integrated broadcast relay terminal 800 includes a light distribution panel 810 for distributing and transmitting an optical signal transmitted from the optical distribution box 700 through the optical cable C, and the wavelengths distributed from the light distribution panel 810. A wavelength multiplexer 820 having a demultiplexer function for concentrating the divided multiplexed optical signal, a receiver 830 for demodulating the optical signal transmitted from the wavelength multiplexer 820 into an R / F signal, and the receiver 830 Splitter 840 for distributing the R / F signal transmitted from the receiver, filter 850 for filtering the R / F signal transmitted from the splitter 840, and R / F transmitted from the splitter 840. A public address receiver 860 for outputting an F signal as an audio signal for public address broadcasting, an optical modulator 870 for modulating and transmitting an image signal of a camera to an optical signal with the wavelength multiplexer 820, and the Converting an optical signal transmitted from the wavelength multiplexer 820 into a data signal It consists of an optical receiver 880, such as a modem, to enable the Internet connection.

The integrated broadcasting system of the present invention configured as described above transmits individual multimedia media, public address broadcasting, cable television, closed circuit television, video signals, audio signals, and data signals of the Internet through one optical cable (C) line. This will drastically reduce the number of line installations to implement, and will also significantly reduce installation costs.

In addition, the integrated broadcasting system of the present invention demodulates and outputs the video signal, the audio signal, and the data signal transmitted through one optical cable (C) line through the integrated broadcasting relay terminal 800, so that the integrated broadcasting relay terminal 800 is installed. The building can provide integrated multimedia services such as video / video conferencing through individual multimedia at any place, viewing and listening to public address, watching cable television, monitoring and security through closed circuit television, and internet access. have.

Moreover, the integrated broadcasting system of the present invention transmits a video signal, an audio signal, and a data signal through an optical cable (C), so that almost no signal loss occurs, thereby eliminating the need for a conventional amplifier, high quality of broadcast, and fast transmission. It can provide streaming broadcasting and communication services of speed.

In addition, the integrated broadcasting system of the present invention transmits individual multimedia media, public address broadcast, cable television, closed circuit television, video signals, audio signals, and data signals of the Internet through a single network, and such images through the integrated broadcast relay terminal 800. By demodulating and providing signals, voice signals, and data signals, management and operation are made easy and efficient.

On the other hand, Figure 4 is a block diagram showing another embodiment of the integrated broadcast system of the present invention, the node management system 150 connected to the control management terminal in the head-and-device 100, the integrated broadcast relay terminal 800 In the PA receiver 860, a communication board 861 is installed to control the PA and the cable television by a signal transmitted from the node management system 150.

Therefore, such an integrated broadcasting system inputs a control signal to the node management system 150 through a control management terminal, which is a kind of computer, and public address broadcasting of the integrated broadcasting relay terminal 800 and individual broadcasting, group broadcasting or channel setting of the cable television. It can be easily controlled centrally.

On the other hand, by installing the upstream broadcasting module in the integrated broadcasting terminal 800, it is also possible to subscribe to the video sound signal for events occurring in the classroom and auditorium to the head-end device 100 to support any domestic broadcasting channel in real time. will be.

Such an embodiment of the present invention is merely to describe a preferred example, the scope of the present invention is not limited to such, and can be changed as appropriate within the scope of the same idea.

As described above, the present invention transmits video signals, audio signals, and data signals such as individual multimedia, public address, cable television, closed circuit television, and the Internet through a single optical cable line, thereby drastically reducing the work of line equipment. The cost is greatly reduced, and it has a useful effect to realize high quality and fast transmission speed. It can be effectively applied to special environments such as military units, airport facilities, as well as apartments, schools, government offices, IBS buildings, etc.

In addition, the present invention demodulates and outputs a video signal, an audio signal, and a data signal transmitted through one optical cable line through an integrated broadcasting relay terminal, so that individual multimedia services, public viewing and listening to public television, cable television, and closed circuit television are output. It is very useful to provide integrated multimedia services such as surveillance and security through internet access.

In addition, since the present invention demodulates and provides a video signal, an audio signal, and a data signal through an integrated broadcast relay terminal, it is possible to easily and efficiently manage and operate an integrated broadcast system.

In addition, the present invention has a useful effect of centrally managing the public address and cable television through the node management system and the communication board.

Claims (8)

A head-end device (100) for modulating the signals of individual multimedia, public address, and cable television and then modulating the signals into RF signals; A transmitter (200) for modulating and transmitting an R / F signal transmitted from the head and apparatus (100) into an optical signal; A receiver for modulating the wavelength of the optical signal transmitted from the transmitter 200, the wavelength of the internet optical signal input from the internet signal optical converter 400, and the image signal and control signal of the digital recording apparatus 500 into the optical signal. A wavelength multiplexing apparatus 300 for multiplexing and outputting an output wavelength of 510; An optical fiber amplifier (600) for amplifying and transmitting the optical signal transmitted from the wavelength multiplexer (300); An optical distribution box 700 for distributing an optical signal transmitted from the optical fiber amplifier 600; Integrated broadcasting relay terminal for demodulating and outputting the optical signal input from the optical distribution box 700 into individual multimedia media, public address broadcasting, cable television, closed circuit television, video signals, sound signals, and data signals corresponding to the Internet ( Integrated broadcast service, characterized in that consisting of (800). The apparatus of claim 1, wherein the head end device (100) comprises: a modulator (110) for modulating video signals and audio signals of individual multimedia; FM modulator 120 for modulating the audio signal of the public address; A filter 130 for filtering the synthesized broadcast signal and the Internet signal; A video modulator 140 for modulating the video and audio signals of the cable television into R / F signals; A synthesizer 160 for synthesizing the modulated RF signal through the modulator 110, the FM modulator 120, the filter 130, and the video modulator 140. Integrated broadcast system, characterized in that consisting of. The integrated broadcasting relay terminal 800 of claim 1, further comprising: an optical distribution panel 810 for distributing and transmitting an optical signal transmitted from the optical distribution box 700 through the optical cable C; A wavelength multiplexing device (820) for concentrating the wavelength division multiplexing optical signal distributed from the optical distribution panel (810); A receiver 830 for demodulating the optical signal transmitted from the wavelength multiplexer 820 into an R / F signal; A divider (840) for distributing the R / F signal transmitted from the receiver (830); A filter 850 for filtering the R / F signal transmitted from the divider 840; A public address receiver (860) for outputting an R / F signal transmitted from the distributor (840) as an audio signal for public address broadcasting; An optical modulator 870 for modulating and transmitting an image signal of a camera into an optical signal to the wavelength multiplexer 820; Optical receiver 880 converting the optical signal transmitted from the wavelength multiplexer 820 into a data signal to enable Internet access Integrated broadcast service, characterized in that configured to include. 4. The PA receiver 860 has a function of amplifying a sound signal received from the head-end device 100 and outputting it to a speaker, and a microphone input circuit is provided to support its own sound in each classroom or classroom. Integrated broadcasting system comprising a function to make. According to claim 2 or claim 3, wherein the head-end device 100 further comprises a node management system 150 for receiving a data signal for controlling the integrated broadcast relay terminal 800 from the control management terminal and transmits the modulation and, The public address receiver 860 of the integrated broadcast terminal 800 further includes a communication board 861 for controlling public address and cable television by a signal transmitted from a node management system. The integrated broadcasting system according to claim 1, wherein the optical distribution box (700) and the integrated broadcasting relay terminal (800) are connected through an optical cable (C). 4. The integrated broadcasting system according to claim 3, wherein the public address broadcasting can be remotely controlled by using a remote controller (REMOTE AMP) in the integrated broadcasting relay terminal (800). 4. The integrated broadcasting system of claim 3, wherein the integrated broadcasting terminal (800) further comprises an upstream broadcasting module for upstream broadcasting support for other events including lecture contents.

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