KR20220090654A - An Image Compression And Transmission Device For A CCTV, An Image Management Cell For A CCTV, And An Image Transfer System For A CCTV - Google Patents

Abstract

The present invention relates to a CCTV video management terminal. A CCTV video management terminal according to the present invention comprises: at least one video compression means for receiving, compressing and outputting an HD-SDI video signal from a camera of any channel for recording a CCTV video; a first mux for receiving and multiplexing the output signals of the respective image compression means and outputting them; and ASI transmission means for transmitting the first mux output to DVB-ASI, wherein the video compression means receives the HD-SDI video signal from the HD camera, and compresses the received HD video signal by H.264. It is characterized by outputting.

Description

CCTV video compression transmission device, CCTV video management terminal, and CCTV video transmission system {An Image Compression And Transmission Device For A CCTV, An Image Management Cell For A CCTV, And An Image Transfer System For A CCTV}

The present invention relates to a CCTV video compression transmission device, a CCTV video management terminal, and a CCTV video transmission system. It relates to a CCTV video compression transmission device, a CCTV video management terminal, and a CCTV video transmission system.

In the HDTV era, CCTV (Closed Circuit Television) is a method that can transmit HD-level images without deterioration of picture quality as the existing SD (720x486, NTSC)-level resolution is converted to HD (1920x1080, HD1080p)-level resolution. SDI transmission method and IP network method have been proposed and have come to become common.

For example, as shown in FIG. 1, HD-SDI transmission that provides an image without image quality deterioration by transmitting the HD image as digital data of about 1.5 Gb/s to the DVR 21 without compression by the existing coaxial cable system. method was introduced.

However, the HD-SDI method has a transmission distance of about 150m using a general cable, and has a transmission distance of about 200m when using a dedicated line. However, there is a limit to long-distance transmission because additional equipment such as an optical transmission converter is required. In addition, since it is difficult to transmit two or more channels by a single coaxial cable, the image of each channel must be transmitted through a separate line, and when the number of channels increases, the line becomes complicated and the cost increases.

On the other hand, in the IP network method of FIG. 2 , an image captured by the HD camera 10 is compressed by H.264 and transmitted to the image server 20 on the network 12 by TCP/IP through a LAN line, and the image server Reference numeral 20 stores the received compressed image in the DVR 21 and provides an image service according to the request of the client 11 .

However, since this IP network method transmits compressed video, the quality of the surveillance video may deteriorate, and transmission delay, image distortion, and recording effects may occur due to errors in the network 12 . In addition, since more cost and technology are required for design and operation of a system using an existing coaxial cable, there has been a problem that may place a considerable burden on small-scale system operators in the existing system.

In particular, since IPs must be assigned to all HD cameras, there is a limit to assigning public IPs when the number of managed cameras increases. If the operator is changed, the problem of having to change the protocol for all cameras may also occur, and it is difficult to unify the management of all HD cameras to be managed.

An object of the present invention is to transmit and receive images of multiple HD cameras, not IP cameras, using the existing CCTV backbone network by transmitting and receiving DVB-ASI images in a compressed and multiplexed state. Therefore, it is to implement a CCTV video compression transmission device, a CCTV video management terminal, and a CCTV video transmission system capable of reducing system construction costs.

A CCTV video management terminal according to the present invention for achieving the above object includes: at least one video compression means for receiving, compressing and outputting an HD-SDI video signal from a camera of any channel for taking a CCTV video; a first mux for receiving and multiplexing the output signals of the respective image compression means and outputting them; and ASI transmission means for transmitting the first mux output to DVB-ASI, wherein the video compression means receives the HD-SDI video signal from the HD camera, and compresses the received HD video signal by H.264. It is characterized by outputting.

The CCTV video management terminal receives the HD-SDI video signal from the HD camera through a coaxial cable, and the ASI transmission means transmits the DVB-ASI video signal through the coaxial cable.

CCTV video transmission system according to the present invention for achieving the above object, the CCTV video management terminal; At least one ASI relay receiving means for receiving a CCTV video signal in which the video signals of multiple channels of HD cameras are compressed and multiplexed for each channel as DVB-ASI, and each ASI relay receiving unit is multiplexed with each HD video signal for CCTV received by each ASI relay receiver It is characterized in that it is configured to include a CCTV video relay terminal including an ASI relay transmission means for transmitting the DVB-ASI.

CCTV video compression transmission apparatus according to the present invention for achieving the above object, the HD-SDI receiving unit for receiving the HD-SDI video signal from the HD camera for taking CCTV video; video signal compression means for compressing and outputting the video signal received by the HD-SDI receiver according to H.264; and ASI transmission means for converting the compressed video signal generated by the video signal compression means into a DVB-ASI signal and transmitting it, wherein the video signal compression means compresses the video signal according to H.264 and outputs it do it with

A CCTV video management terminal according to the present invention for achieving the above object includes: a plurality of ASI receivers for receiving a DVB-ASI video signal formed after a single channel video by an HD camera is compressed in real time; a mux for receiving the signals of the respective ASI receivers, multiplexing them and outputting them; and ASI transmission means for converting the MUX output video signal into DVB-ASI and transmitting the converted video signal.

CCTV video management terminal according to the present invention for achieving the above object, a plurality of first ASI receiver for receiving the DVB-ASI video signal formed after the video of a single channel by an HD camera is compressed in real time; a second ASI receiver for receiving a DVB-ASI video signal formed after video signals photographed by a plurality of HD cameras are compressed in real time for each channel corresponding to each camera and the video signals of all channels are multiplexed; a mux for receiving both the signal of the first ASI receiver and the signal of the second ASI receiver, multiplexing and outputting the signal; and ASI transmission means for transmitting the MUX output as DVB-ASI.

The CCTV video relay terminal according to the present invention for achieving the above object is a DVB-ASI video signal formed after images captured by a plurality of HD cameras are compressed in real time for each channel corresponding to each camera and all channels are multiplexed again. at least one ASI relay receiving unit for receiving; a relay mux for receiving the signals of the respective ASI relay receiving units, multiplexing them and outputting them; and an ASI relay transmission means for transmitting the relay mux output to DVB-ASI.

CCTV video transmission system according to the present invention for achieving the above object, the CCTV video management terminal; It is characterized in that it comprises a CCTV video signal IP transmitter that receives the video signal transmitted from the at least one ASI transmission means as DVB-ASI, demultiplexes the received video signal and transmits the IP.

CCTV video transmission system according to the present invention for achieving the above object, the CCTV video management terminal; At least one ASI relay receiver for receiving at least one CCTV video signal in which the video signals of a plurality of channels of HD cameras are compressed and multiplexed for each channel in DVB-ASI, and the received ASI relay receiver video signals are multiplexed. and a CCTV video relay terminal including a mux and an ASI relay transmission means for transmitting the relay mux output to DVB-ASI.

CCTV video transmission system according to the present invention for achieving the above object, the CCTV video management terminal; At least one ASI relay receiver for receiving at least one CCTV video signal in which the video signals of a plurality of channels of HD cameras are compressed and multiplexed for each channel in DVB-ASI, and the received ASI relay receiver video signals are multiplexed. ASI relay transmission means for transmitting the mux and the relay mux output to DVB-ASI; A CCTV video relay terminal including a CCTV video signal IP transmitter that receives the video signal transmitted from the at least one ASI transmission means as DVB-ASI, demultiplexes the received video signal and transmits it IP do.

The present invention receives a signal transmitted through DVB-ASI in a state in which the images of a plurality of HD cameras are compressed according to the above configuration, converts it into an IP signal of a corresponding protocol, and transmits it, so that multiple HD camera image signals are recognized as one. Enables transmission by IP. In addition, since images from multiple HD cameras, not IP cameras, can be transmitted using the existing CCTV backbone network, it becomes possible to reduce system construction costs.

And, according to the present invention, according to the above configuration, the CMS, VMS, and NVR servers recognize as an IP camera an HD camera that outputs an existing HD-SDI signal or an HD camera that transmits an HD compressed video signal as a DVB-ASI signal. It is possible to receive the signal and forward the image of the corresponding channel to the client.

1 is a schematic diagram illustrating a CCTV system by a conventional HD-SDI transmission method.
Figure 2 is a schematic diagram illustrating a CCTV system by the conventional IP transmission method.
Figure 3 is a schematic diagram illustrating a CCTV system by the CCTV video signal IP transmitter of the first embodiment of the present invention.
Figure 4 is a schematic diagram illustrating a CCTV system by the CCTV video signal IP transmitter of the second embodiment of the present invention.
5 is a schematic diagram illustrating a CCTV system by a CCTV video signal IP transmitter according to a third embodiment of the present invention.
6 is a schematic diagram illustrating a CCTV system by a CCTV video signal IP transmitter of a third embodiment of the present invention
7 is a schematic diagram illustrating a CCTV system by a CCTV video signal IP transmitter of a third embodiment of the present invention
8 is a schematic diagram illustrating a CCTV system by a CCTV video signal IP transmitter according to a fourth embodiment of the present invention
9 is a schematic diagram illustrating a CCTV system by a CCTV video signal IP transmitter according to a fifth embodiment of the present invention;

Hereinafter, the configuration of a preferred embodiment of the CCTV video signal IP transmitter according to the present invention having the above configuration will be described in detail with reference to the accompanying drawings.

The CCTV video signal IP transmitter 100 of the first embodiment shown in FIG. 3 includes N ASI receivers 110 for receiving DVB-ASI signals from N HD cameras 210 through a coaxial cable 218, and the and IP transmission means 180 for converting the compressed video signal of the HD camera 210 received by each ASI receiver 110 into IP data and transmitting the converted video signal.

The HD camera 210 of the first embodiment includes a camera module 211 for outputting an image signal by shooting an HD image for CCTV, and an image compression means for compressing the image signal output from the camera module 211 ( 213) and an ASI transmission unit 215 that converts the video signal compressed by the video compression means 213 into a DVB-ASI signal and transmits the converted video signal.

The HD camera 210 of the first embodiment is an HD camera for CCTV image shooting of HD (1920x1080, HD1080p) level, and the video signal compression means 213 converts the output of the camera module 211 to H.264 (MPEG 4). ), the ASI transmission unit 215 converts the H.264 compressed video signal into a DVB-ASI signal and transmits it to the CCTV video signal IP transmitter 100 of this embodiment through the coaxial cable 218 . Meanwhile, the video signal compression means 213 may compress the HD video signal captured by the camera module 211 by High Efficiency Video Coding (HEVC) or MPEG 2 .

Since the ASI receiver 110 of the CCTV video signal IP transmitter 100 of this embodiment receives the DVB-ASI video signal of N channels corresponding to the N HD cameras 210 through the coaxial cable 218, the existing CCTV The backbone network can be used as it is. The IP transmitting means 180 of this embodiment designates a separate port number for each received video signal of each channel, and transmits IP data by the same public IP address (ie, the public IP address of the CCTV video signal IP transmitter). It is formed and transmitted to any one of the CMS 710 , the VMS 720 , the NVR 730 and the image storage server 750 .

On the other hand, the IP transmission means 180 forms IP data corresponding to the transmission protocol of the CMS 710 , the VMS 720 , and the NVR 730 as the receiving side. For example, if a protocol used by a certain VMS provider is any one of RTSP, RTCP, RTP, ONVIF, and UDP, IP data of each channel compressed video is formed by the protocol. In addition, although it is transmitted with a single public IP, a separate port number is designated for each channel, so the receiving side CMS 710, VMS 720, NVR 730 and the storage server receive the CCTV video of the corresponding channel. can be browsed.

The CCTV video signal IP transmitter 100 of the second embodiment of the present invention receives the uncompressed video signal of the HD camera 220 that outputs the video signal as HD-SDI through the coaxial cable 228, compresses it, and outputs it as DVB-ASI It is possible to receive the outputs of the N video compression transmission devices 250 to be received by the N ASI receivers 110 .

The video compression transmission device 250 of the second embodiment includes an HD-SDI receiving unit 251 that receives an HD-SDI video signal through a coaxial cable from an HD camera 220 that shoots a CCTV video, and the received video signal. and an ASI transmission unit (255) for converting the compressed video signal generated by the video signal compression means (253) into a DVB-ASI signal and transmitting the video signal compression means (253) for compressing the video signal. Since the compression means 253 and the ASI transmission unit 255 have the same configuration as those of the first embodiment, descriptions thereof will be omitted.

On the other hand, as a modification of the first and second embodiments, the CCTV video signal IP transmitter 100 is N from the HD camera 210 of the first embodiment and the video compression transmitter 250 of the second embodiment to DVB-ASI. It is possible to receive the channel HD compressed video signal, and convert the compressed video signal of each channel into IP data corresponding to the transmission protocol of the CMS 710, VMS 720, and NVR 730 operators of the receiving side and transmit it.

The CCTV video signal IP transmitter 100 of the first and second embodiment, because the DVB-ASI method through the coaxial cables 218, 228, 258 has a transmission distance of 300 to 400 m, if it is within the distance, regardless of the number, for example, hundreds of Receives compressed video from multiple HD cameras 210 or video compression transmission device 250 through a coaxial cable that is the backbone network for existing HD-SDI cameras, converts it into IP data, and transmits it to a remote location using a single public IP address. thing becomes possible

In the CCTV video signal IP transmitter 500 of the third embodiment of the present invention shown in FIG. 5 or FIG. 7, the video signal photographed by N HD cameras 210 and 220 is channel-by-channel corresponding to each HD camera 210 and 220. At least one ASI receiver 510 receiving a DVB-ASI video signal formed after real-time compression and multiplexing of compressed video signals of N channels through a coaxial cable 388, and each of the ASI receivers 510 The demux 520 that demultiplexes the received multiplexed compressed image signal and outputs the compressed image signal of N channels corresponding to the N HD cameras 210 and 220, and each demux using the same public IP address of the transmission side. (520) includes an IP transmission unit 530 that converts the output of each channel compressed video signal into IP data and transmits the converted video signal.

As shown in Fig. 5, the ASI receiver 510 of the CCTV video signal IP transmitter of this embodiment receives the video of N HD cameras 220 through a coaxial cable 228, compresses and multiplexes it, and then DVB-ASI again It is possible to receive the compressed video signal of the CCTV video management terminal 300 that is converted into a signal and output through the coaxial cable 388 through the coaxial cable 388 .

That is, the CCTV video management terminal 300 of an embodiment of the present invention is provided with N HD-SDI receiving units 310 to receive HD-SDI video signals from a plurality of HD cameras 220 through the coaxial cable 228 . and each video compression means 330 corresponding to the received video signal of each channel compresses it in H.264 (MPEG 4) or HEVC (High Efficiency Video Coding) or MPEG 2, and the compressed video signal of each channel is multiplexed by the mux 340 , and the ASI transmission unit 380 converts the multiplexed compressed video signal into a DVB-ASI signal and outputs it to the coaxial cable 388 .

On the other hand, the CCTV image management terminal 301 of another embodiment of the present invention shown in FIG. 6 is a DVB-ASI compressed image from the HD camera 210 of the first embodiment or the image compression transmission device 250 of the second embodiment. The ASI receiver 311 receives a signal through a coaxial cable, the mux 341 multiplexes the compressed video signal of each channel received by the ASI receiver 311, and the output of the mux 341 is converted back to a DVB-ASI signal. It may include an ASI transmitter 381 for switching and outputting.

In addition, the CCTV video management terminal 301 may further include an ASI receiver 312 for receiving a DVB-ASI signal from other CCTV video management terminals 300 and 301, in which case the ASI receiver 312 receives The multiplexed compressed image signal may be multiplexed by the mux 341 together with the output of another HD camera 210 or the image compression transmission device 250 .

As shown in Figure 7, the ASI receiver 510 of the CCTV video signal IP transmitter 500 of the third embodiment receives the outputs of several CCTV video management terminals 300 and 301 as DVB-ASI, multiplexes them, and then coaxial It is possible to receive the output of the CCTV video relay terminal 400 transmitted to the DVB-ASI through the cable 488 through the coaxial cable 488 .

The demux 520 of the third embodiment is separately installed to correspond to each ASI receiver 510, and demultiplexes the multiplexed compressed video signal received by the corresponding ASI receiver 510 to receive the compressed video signal of each channel. print out

For example, if the video management terminal 300 or 301 compresses and outputs the video of N HD cameras 210 and 220, the demux 520 outputs a compressed video signal of N channels, and each channel is divided by PID. It is input to the IP transmission means (530).

For example, when the ASI receiver 510 receives the output of the CCTV relay terminal 400 through the coaxial cable 488, in FIG. 7, assuming that N is 8, M is 4, and L is 4, each CCTV The video management terminal 300 receives, compresses, and outputs the video signal of 8 channels for the 8 HD cameras 220 and outputs it as a DVB-ASI signal, and the CCTV relay terminal 400 includes 4 CCTV video management terminals 300, respectively. ) is received as a DVB-ASI signal, multiplexed again, and a 32-channel DVB-ASI signal is output through a coaxial cable 488.

The CCTV video signal IP transmitter 500 according to the third embodiment includes four ASI receivers 510 to receive video signals of a total of 128 channels from four CCTV relay terminals 400 in DVB-ASI. The number of demux 520 in the present embodiment is provided corresponding to the ASI receiver 510, and each demux 520 demultiplexes the compressed image signal multiplexed by the corresponding ASI receiver 510 to provide The signal is divided by PID and output.

The IP transmission means 530 of this embodiment receives each channel compressed video signal inputted after being demultiplexed from the four demux 520, classifies each channel by PID, and assigns a separate port number to each channel. a port number assigning means, IP data forming means for forming IP data corresponding to the assigned port number, public IP address, and the transmission protocol of the receiving side, and network connection means for transmitting the IP data by IP.

For example, when the public IP address of the CCTV video signal IP transmitter 500 is 192.168.0.11, since the compressed video signal of 128 channels is transmitted by IP, specifying port numbers from 101 to 228 for each channel In the same way, it is possible to transmit IP data to the CMS 710 , the VMS 720 , the NVR 730 , or the storage server 750 .

In this case, if the designated port number is 101 when viewing the image of the HD camera 220, the receiving side CMS 710, VMS 720, NVR 730, storage server 750, etc. have a public IP address. and port number 101, it becomes possible to view the video of the corresponding channel or forward it to the client.

On the other hand, when the CCTV video signal IP transmitter of the present invention receives the multiplexed compressed video signal from four CCTV relay terminals or video management terminals through a coaxial cable, it is possible to designate a different port number for each channel of each ASI receiver. do. For example, port numbers from 100 to 132 are assigned to 32 cameras input from ASI receiver No. 1, and port numbers from 1000 to 1100 are assigned to cameras input to other ASI receivers. There may be several variations of the grant method.

The CCTV video signal IP transmitter 800 of the fourth embodiment of the present invention shown in FIG. 8 is at least one first ASI for receiving a DVB-ASI video signal formed after a single channel video by an HD camera is compressed in real time. At least one second ASI receiver 820 that receives a signal in which the video signal photographed by the receiver 810 and the N HD cameras 210 and 220 is compressed and multiplexed, and the second ASI receiver 820 receives the compression and a demux 830 for demultiplexing the multiplexed video signal and outputting it as a compressed video signal of each channel, and an IP transmission means 850 for converting the compressed video signal of each channel into IP data and transmitting it to IP. do.

The first ASI receiver 810 of the fourth embodiment has the same configuration as the ASI receiver 110 of the first or second embodiment, and coaxializes the HD compressed image signal from the HD camera 210 or the image compression transmission device 250 . Receive as DVB-ASI through cables 228 and 258, and according to the number of HD cameras 210 or image compression transmission devices 250 within 300 to 400M, which is the DVB-ASI transmission distance by coaxial cables 228 and 258, the first It is possible to increase or decrease the number of ASI receivers 810 .

The second ASI receiver 820 of the fourth embodiment of the present invention has the same configuration as the ASI receiver 510 of the third embodiment, and the ASI transmitter of the CCTV video management terminals 300 and 301 or the CCTV video relay terminals 400 and 401 and It is connected by coaxial cables 388 and 488, and receives the DVB-ASI signal output from the ASI transmitter through coaxial cables 388 and 488. The second ASI receiver 820 of this embodiment has a corresponding number according to the number of CCTV video management terminals 300 and 301 or CCTV video relay terminals 400 and 401 located within 300 to 400M, which is a DVB-ASI transmission distance using a coaxial cable. This is possible, and the number of the second ASI receivers 820 may vary according to a service policy or a specification or embodiment of a coaxial cable.

Each corresponding demux 830 is connected to each of the second ASI receivers 820 of the present embodiment, and the video signals received by the corresponding second ASI receivers 820 are demultiplexed to obtain an N-channel compressed video signal. is generated and input to the IP transmission means 850, and each channel can be divided by PID.

The IP transmitting means 850 of the fourth embodiment receives the compressed video signal of each channel from each of the first ASI receivers 810 or from each demux 830 connected to the second ASI receiver 820, and receives the PID to designate a separate port number by dividing the channel by means of a CMS (710), the VMS (720), the NVR (730), and the storage server (750) by generating IP data using the same public IP address.

The IP transmitting means 850 of this embodiment receives each channel compressed video signal input from the first ASI receiver 810 or demultiplexed from the demux 830, classifies each channel by PID, and sends it to each channel. Port number assigning means for assigning a separate port number to each other, IP data forming means for forming IP data of a protocol corresponding to the receiving side based on the assigned port number and public IP address, and a network for transmitting IP data to IP connecting means.

The IP transmission means 850 of the embodiment of the present invention receives the compressed video signal of each channel from the demux, whereas the IP transmission means 530 of the third embodiment receives the first ASI receiver 810 or the demux 830. It has the same configuration as the IP transmission means 530 of the third embodiment except for receiving the compressed video signal of each channel from the .

The CCTV video signal IP transmitter 900 of the fifth embodiment of the present invention shown in FIG. 9 is directly connected to several tens to hundreds of HD cameras by a coaxial cable 228 to receive an HD-SDI signal. A video signal compression means for compressing the video signal of each camera according to H.264, and a separate port number is assigned to the compressed video signal of each channel corresponding to each HD camera, and one official It includes an IP transmission means 930 that forms IP data according to an IP address and transmits it to the CMS 710 , the VMS 720 , the NVR 730 , the storage server 750 , and the like.

The scope of the present invention is not limited to the above embodiments, but is defined by the matters described in the claims, and it is evident that various modifications and adaptations made by those skilled in the art within the scope of the claims and equivalents are included.

100,500,800 : CCTV video signal IP transmitter
110,510,810,820: ASI receiver
180,530,850: IP transmission means
210,220 : HD camera
218,228,388: coaxial cable
300,301 : CCTV video management terminal
400: CCTV video relay terminal
520,830 : Demux

Claims (10)

at least one video compression means for receiving, compressing and outputting an HD-SDI video signal from a camera of any channel that takes a CCTV video;
a first mux for receiving and multiplexing the output signals of the respective image compression means and outputting them;
ASI transmission means for transmitting the first mux output to DVB-ASI,
The video compression means receives an HD-SDI video signal from the HD camera, and compresses the received HD video signal according to H.264 and outputs the received video signal. The CCTV video management terminal according to claim 1, wherein the CCTV video management terminal receives the HD-SDI video signal from the HD camera through a coaxial cable, and the ASI transmission means transmits the DVB-ASI video signal through the coaxial cable. . The CCTV video management terminal according to claim 1;
At least one ASI relay receiving means for receiving a video signal for CCTV in which the video signals of multiple channels of HD cameras are compressed and multiplexed for each channel as DVB-ASI, and each ASI relay receiving unit is multiplexed with each HD video signal for CCTV received by each ASI relay receiver CCTV video transmission system, characterized in that it comprises a CCTV video relay terminal including an ASI relay transmission means for transmitting the DVB-ASI. an HD-SDI receiving unit for receiving an HD-SDI video signal from an HD camera that shoots CCTV images;
video signal compression means for compressing and outputting the video signal received by the HD-SDI receiver according to H.264;
ASI transmission means for converting the compressed video signal generated by the video signal compression means into a DVB-ASI signal and transmitting,
The video signal compression means compresses the video signal according to H.264 and outputs the compressed video signal. a plurality of ASI receivers for receiving a DVB-ASI video signal formed after a single channel video by an HD camera is compressed in real time;
a mux for receiving the signals of the respective ASI receivers, multiplexing them and outputting them;
and an ASI transmission means for converting the MUX output video signal into DVB-ASI and transmitting it. a plurality of first ASI receivers for receiving a DVB-ASI video signal formed after a single-channel video by an HD camera is compressed in real time;
a second ASI receiver for receiving a DVB-ASI video signal formed after video signals photographed by a plurality of HD cameras are compressed in real time for each channel corresponding to each camera and the video signals of all channels are multiplexed;
a mux for receiving both the signal of the first ASI receiver and the signal of the second ASI receiver, multiplexing and outputting the signal;
and an ASI transmission means for transmitting the MUX output to DVB-ASI. at least one ASI relay receiving unit for receiving a DVB-ASI image signal formed after images photographed by a plurality of HD cameras are compressed in real time for each channel corresponding to each camera and the entire channels are multiplexed;
a relay mux for receiving the signals of the respective ASI relay receiving units, multiplexing them and outputting them;
and ASI relay transmission means for transmitting the relay MUX output to DVB-ASI. The CCTV video management terminal according to claim 5 or 6;
and a CCTV video signal IP transmitter that receives the video signal transmitted from the at least one ASI transmission means as DVB-ASI, demultiplexes the received video signal and transmits the IP video signal. The CCTV video management terminal according to claim 5 or 6;
At least one ASI relay receiver for receiving at least one video signal for CCTV in which the video signals of a plurality of channels of HD cameras are compressed and multiplexed for each channel as DVB-ASI, and each of the received ASI relay receiver video signals is multiplexed. A CCTV video transmission system comprising: a MUX; and a CCTV video relay terminal including an ASI relay transmission means for transmitting the relay MUX output to DVB-ASI. The CCTV video management terminal according to claim 5 or 6;
At least one ASI relay receiver for receiving at least one video signal for CCTV in which the video signals of a plurality of channels of HD cameras are compressed and multiplexed for each channel as DVB-ASI, and each of the received ASI relay receiver video signals is multiplexed. ASI relay transmission means for transmitting the mux and the relay mux output to DVB-ASI;
A CCTV video relay terminal including a CCTV video signal IP transmitter that receives the video signal transmitted from the at least one ASI transmission means as DVB-ASI, demultiplexes the received video signal and transmits it IP CCTV video transmission system.

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