KR20140100196A - An IP Translator For CCTV Video Signal - Google Patents

Abstract

The present invention relates to an IP translator for a CCTV video signal. The IP translator for the CCTV video signal of the present invention is configured to comprise N numbers of ASI receiving units receiving an HD-SDI video signal from an HD camera for capturing a CCTV video and receiving a DVB-ASI compressed video signal with a coaxial cable from a video compression transmission means which compresses the received video signal, converts the video signal to the DVB-ASI signal, and transmits to the coaxial cable; and an IP transfer means specifying individual port number for each channel corresponding to each HD camera about the compressed video signal of each HD camera which is received from the ASI receiving units, and transferring IP data to an IP by forming the IP data with one authorized IP address.

Description

An IP Translator For CCTV Video Signal [

The present invention relates to a CCTV video signal IP transmitter, and more particularly, to an IP transmitter of a CCTV video signal, more specifically, receives a signal transmitted from a plurality of HD cameras in a compressed state to a DVB-ASI, , A CCTV video signal IP transmitter capable of transmitting a plurality of HD camera video signals to one public IP address.

Closed Circuit Television (CCTV) is a way to transmit HD-quality video without deterioration of quality as HDTV (1920x1080, HD1080p) level is converted from SD (720x486, NTSC) SDI transmission method and IP network method have been proposed and become popular.

For example, as shown in FIG. 1, a conventional coaxial cable system transmits HD-SDI to a DVR 21 with digital data of about 1.5 Gb / s without compressing the HD video, Method.

However, since the HD-SDI system has a transmission distance of about 150m when using a general cable, and has a transmission distance of about 200m when using a dedicated line, the HD-SDI repeater 33 ) And optical transmission converters are required and there is a limitation in the long distance transmission. In addition, since it is difficult to transmit two or more channels by one coaxial cable, images of the respective channels must be transmitted through separate lines, and the channel becomes complicated and the cost increases when the number of channels increases.

2, the video captured by the HD camera 10 is compressed by H.264 and transmitted to the video server 20 on the network 12 via TCP / IP via the LAN, (20) stores the received compressed video in the DVR (21) and provides a video service according to a request of the client (11).

However, since the IP network system transmits a compressed image, the quality of the supervised image may deteriorate, and transmission delay, image distortion, and recording influence due to errors of the network 12 may occur. In addition, since a system using existing coaxial cables requires more cost and technology for design and operation, there has been a problem that a small-scale system operator in a conventional system may have a considerable burden.

Particularly, since IP should be assigned to all HD cameras, there is a limitation in assigning a public IP when the number of cameras to be managed increases. The transmission protocol must be adapted to the protocols of CMS, VMS, and NVR providers. If the operator is changed, there may be a problem that the protocol for all the cameras needs to be changed, and it is difficult to unify management of the entirely managed HD camera.

An object of the present invention is to provide a method and system for receiving a signal transmitted from DVB-ASI in a state in which a plurality of HD camera images are compressed and converting the signal into an IP signal of a corresponding protocol, To realize a CCTV video signal IP transmitter.

According to an aspect of the present invention, there is provided a CCTV video signal IP transmitter including a camera module for capturing a CCTV image and outputting an HD video signal, an image signal compression unit for compressing an HD video signal output from the camera module, An ASI transmitting unit for converting the video signal compressed by the video signal compressing unit into a DVB-ASI signal and transmitting the DVB-ASI signal through a coaxial cable; N ASI receiving units for receiving a DVB-ASI signal through a coaxial cable from an HD camera; ; An IP transmission means for assigning a separate port number for each channel corresponding to each of the HD cameras to the compressed video signal of the HD camera received by each of the ASI receiving units and forming IP data with one public IP address to perform IP transmission And the like.

According to an aspect of the present invention, there is provided a CCTV video signal IP transmitter for receiving an HD-SDI video signal from an HD camera capturing a CCTV video, compressing the received video signal, converting the received video signal into a DVB- ASI compression video signal from the video compression transmission means for transmitting the DVB-ASI compressed video signal through the coaxial cable; An IP transmission means for assigning a separate port number to each HD camera's corresponding compressed video signal received by each of the ASI receiving units and forming IP data with one public IP address, And a control unit.

According to another aspect of the present invention, there is provided an IP transmitter for a CCTV video signal, the video signal captured by N HD cameras being compressed in real time for each channel corresponding to each HD camera, At least one ASI receiver for receiving a DVB-ASI video signal through a coaxial cable; A demultiplexer for demultiplexing a multiplexed compressed video signal received by the corresponding ASI receiver and outputting a compressed video signal of N channels corresponding to N HD cameras; And IP transmission means for converting a channel compressed video signal of each of the demux outputs to IP data and transmitting the IP data to an IP by assigning a different port number to each of the channels, .

According to an aspect of the present invention, there is provided an IP transmitter for a CCTV video signal, comprising: at least one first ASI receiver for receiving a DVB-ASI video signal formed after a single channel image is compressed in real time by an HD camera; An image signal captured by N HD cameras is compressed in real time for each channel corresponding to each HD camera, and at least one of DVB-ASI image signals formed after multiplexing N compressed video signals is received through a coaxial cable A second ASI receiving unit; A demultiplexer for demultiplexing a multiplexed video signal received by a corresponding second ASI receiver and outputting a compressed video signal of each channel corresponding to each HD camera; A separate port number is designated for each of the channels, and the channel-compressed video signals of the first ASI receiving unit and the respective demux outputs are converted into IP data by the same transmitting-side public IP address, And transmitting means.

According to an aspect of the present invention, there is provided an IP transmitter for a CCTV video signal, comprising: N HD-SDI receivers connected to a N HD camera through a coaxial cable to receive an HD-SDI signal of each channel corresponding to each HD camera; Wow; And IP transmission means for assigning different port numbers to the respective channels and forming IP data based on a single public IP address according to the protocol of the reception side and performing IP transmission.

The IP transmitting unit forms IP data by transmitting the compressed video signal of each of the HD cameras to one of RTSP, RTCP, RTP, ONVIF, and UDP.

The IP transmission means transmits IP data to one of a VMS, a CMS, an NVR and an image storage server.

And a storage device for storing a compressed image of each HD camera received by the IP transmitter of the CCTV video signal for each channel corresponding to each HD camera.

According to the present invention, by receiving the signals transmitted from the DVB-ASI in a state in which the images of a plurality of HD cameras are compressed as described above, the signals are converted into IP signals of corresponding protocols and transmitted, IP. In addition, since it is possible to transmit images of a plurality of HD cameras rather than an IP camera by using the existing CCTV backbone network, it is possible to reduce the system construction cost.

According to the present invention, the CMS, VMS, and NVR servers recognize an HD camera outputting a conventional HD-SDI signal or an HD camera transmitting a HD compressed video signal as a DVB-ASI signal as an IP camera It is possible to receive the video signal and to forward the video of the channel to the client.

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

Hereinafter, a configuration of a preferred embodiment of a CCTV video signal IP transmitter according to the present invention 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 receiving units 110 for receiving a DVB-ASI signal from N HD cameras 210 through a coaxial cable 218, And IP transmission means 180 for converting the compressed video signal of the HD camera 210 received by each ASI receiving unit 110 into IP data and transmitting the IP data.

The HD camera 210 of the first embodiment includes a camera module 211 for capturing an HD image for CCTV and outputting a video signal, an image compressing means for compressing the video signal output from the camera module 211 And an ASI transmission unit 215 for converting the video signal compressed and generated by the video compression unit 213 into a DVB-ASI signal and transmitting the DVB-ASI signal.

The HD camera 210 of the first embodiment is an HD camera for capturing CCTV images of HD (1920x1080, HD1080p) class, and outputs the output of the camera module 211 to the video signal compressing means 213 in H.264 The ASI transmitting unit 215 converts the H.264 compressed video signal into a DVB-ASI signal and transmits the converted DVB-ASI signal to the CCTV video signal IP transmitter 100 of the present embodiment through the coaxial cable 218. On the other hand, the video signal compression unit 213 can compress the HD video signal captured by the camera module 211 by HEVC (High Efficiency Video Coding) or MPEG2.

The ASI receiver 110 of the CCTV video signal IP transmitter 100 of the present embodiment receives the DVB-ASI video signal of the N channel corresponding to the N HD cameras 210 through the coaxial cable 218, The backbone network can be utilized as it is. The IP transmitting means 180 of the present embodiment assigns a different port number to each of the video signals of the received channels and sets the IP data according to the same public IP address (that is, the public IP address of the CCTV video signal IP transmitter) To the CMS 710, the VMS 720, the NVR 730, and the image storage server 750.

Meanwhile, the IP transmission unit 180 forms IP data corresponding to the transmission protocol of the CMS 710, the VMS 720, and the NVR 730, which are the receiving units. For example, if a protocol used by a VMS provider is one of RTSP, RTCP, RTP, ONVIF, and UDP, IP data of each channel compressed image is formed by the protocol. Since the CMS 710, the VMS 720, the NVR 730, and the storage server, which are the receiving side, designate a separate port number for each channel, the CCTV video of the corresponding channel is transmitted Can be read.

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 outputting the video signal as HD-SDI through the coaxial cable 228, compresses it, and outputs it to the DVB- It is possible for the N ASI receiving units 110 to receive the output of the N image compressing and transmitting apparatuses 250.

The video compression transmission apparatus 250 of the second embodiment includes an HD-SDI receiving unit 251 for receiving an HD-SDI video signal from a HD camera 220 for capturing a CCTV video through a coaxial cable, And an ASI transmission unit 255 for converting the compressed video signal generated by the video signal compression unit 253 into a DVB-ASI signal and transmitting the DVB-ASI signal, wherein the video signal compression unit 253 compresses the video signal The compression unit 253 and the ASI transmission unit 255 have the same configuration as that of the first embodiment, and a description thereof will be omitted.

In the meantime, as a modification of the first and second embodiments, the CCTV video signal IP transmitter 100 receives N (N) frames from the HD camera 210 of the first embodiment and the video compression transmission apparatus 250 of the second embodiment to the DVB- It is possible to receive the channel HD compressed video signal and to convert the compressed video signal of each channel into IP data corresponding to the transmission protocol of the CMS 710, VMS 720, or NVR 730, which is the receiving side, and transmit the IP data.

Since the DVB-ASI system through the coaxial cables 218, 228 and 258 has a transmission distance of 300 to 400 m, the CCTV video signal IP transmitter 100 of the first embodiment of the present invention can transmit, A compressed image of the plurality of HD cameras 210 or the image compression transmission device 250 is received through a coaxial cable that is a backbone for the existing HD-SDI camera, converted into IP data, and transmitted remotely using one public IP address Lt; / RTI >

The CCTV video signal IP transmitter 500 according to the third embodiment of the present invention shown in FIG. 5 or 7 is configured such that video signals photographed by the N HD cameras 210 and 220 correspond to the HD cameras 210 and 220 (510) for receiving a DVB-ASI video signal, which is compressed in real time and then compressed after N compressed video signals are multiplexed, through a coaxial cable (388), and at least one ASI receiver A demultiplexer 520 for demultiplexing the received multiplexed compressed video signals and outputting compressed video signals of N channels corresponding to the N HD cameras 210 and 220, And an IP transmission unit 530 for converting each channel compressed video signal output from the channel 520 into IP data and transmitting the IP data.

5, the ASI receiver 510 of the CCTV video signal IP transmitter of the present embodiment receives and compresses and multiplexes the images of N HD cameras 220 on the coaxial cable 228, and outputs the DVB-ASI Signal and outputs the compressed video signal of the CCTV video management terminal 300 through the coaxial cable 388. [

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

The CCTV video management terminal 301 of another embodiment of the present invention shown in FIG. 6 receives the DVB-ASI compressed video (video) from the HD camera 210 of the first embodiment or the video compression transmission device 250 of the second embodiment An ASI receiver 311 for receiving a signal through a coaxial cable, a multiplexer 341 for multiplexing compressed video signals of the respective channels received by the ASI receiver 311, and a multiplexer 341 for multiplexing the output of the multiplexer 341 as a DVB- And an ASI transfer unit 381 for switching and outputting.

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. At this time, The multiplexed compressed video signal may be multiplexed by the multiplexer 341 together with the output of the other HD camera 210 or the video compression transmission apparatus 250.

7, the ASI receiver 510 of the CCTV video signal IP transmitter 500 of the third embodiment receives and outputs the outputs of several CCTV video management terminals 300 and 301 to the DVB-ASI, It is possible to receive the output of the CCTV video relay terminal 400, which transmits through the cable 488 to the DVB-ASI, via the coaxial cable 488.

The demultiplexer 520 of the third embodiment is separately provided to correspond to each ASI receiver 510 and demultiplexes the multiplexed compressed video signal received by the corresponding ASI receiver 510 to output a compressed video signal of each channel Output.

For example, if the video management terminals 300 and 301 compress and output the images of the N HD cameras 210 and 220, the DEMUX 520 outputs N compressed video signals, and each channel is classified by the PID IP transmission means 530. [

For example, when the ASI receiving unit 510 receives the output of the CCTV relay terminal 400 via the coaxial cable 488, assuming that N is 8, M is 4, and L is 4 in FIG. 7, The video management terminal 300 receives and compresses 8 video signals for 8 HD cameras 220 and outputs the video signals as a DVB-ASI signal. The CCTV relay terminal 400 includes four CCTV video management terminals 300 ASI signal and multiplexes it again to output the DVB-ASI signal of 32 channels to the coaxial cable 488. The DVB-

The CCTV video signal IP transmitter 500 of the third embodiment includes four ASI receivers 510 to receive a total of 128 channels of video signals from the four CCTV repeater terminals 400 as a DVB-ASI. The demultiplexer 520 of the present embodiment is provided with a number corresponding to the ASI receiver 510 and each demux 520 demultiplexes the multiplexed compressed video signal of the corresponding ASI receiver 510, To PID.

The IP transmission means 530 of the present embodiment receives each channel-compressed video signal demultiplexed and input from the four demuxs 520, identifies each channel by PID, assigns a separate port number to each channel IP data forming means for forming IP data corresponding to the assigned port number, public IP address and transmission protocol of the receiving side, and network connecting means for transmitting the IP data by IP.

For example, when the public IP address of the CCTV video signal IP sender 500 is 192.168.0.11, the compressed video signal of 128 channels is transmitted by IP, so that a port number of 101 to 228 is designated for each channel It is possible to transfer the IP data to the CMS 710, the VMS 720, the NVR 730 or the storage server 750 together.

When the designated port number is 101, the CMS 710, the VMS 720, the NVR 730, the storage server 750, and the like, which are the receiving side, And the port number 101 to browse the video of the corresponding channel or to forward the video to the client.

Meanwhile, when a CCTV video signal IP transmitter of the present invention receives a compressed video signal multiplexed from four CCTV relay terminals or video management terminals via a coaxial cable, it is possible to designate a port number for each channel of each ASI receiver Do. For example, port numbers ranging from 100 to 132 are assigned to 32 cameras input from ASI No. 1, and port numbers ranging from 1000 to 1100 are assigned to cameras input to other ASI receiving units. There are several variations on the granting scheme.

8, the CCTV video signal IP transmitter 800 of the fourth embodiment of the present invention includes at least one first ASI (first ASI) for receiving a DVB-ASI video signal formed after a single- At least one second ASI receiving unit 820 receiving the compressed and multiplexed video signal of the image signal picked up by the N HD cameras 210 and 220 and a second ASI receiving unit 820 receiving the compressed A demultiplexer 830 for demultiplexing the multiplexed video signals and outputting the demultiplexed video signals as compressed video signals of the respective channels, and IP transmission means 850 for converting the compressed video signals of the respective channels into IP data and transmitting the IP data to an IP do.

The first ASI receiving unit 810 of the fourth embodiment receives the HD compressed video signal from the HD camera 210 or the video compression transmitting apparatus 250 in the same configuration as the ASI receiving unit 110 of the first or second embodiment, ASI according to the number of HD cameras 210 or video compression transmission devices 250 within 300 to 400M of the DVB-ASI transmission distance by the coaxial cables 228 and 258 via cables 228 and 258, It is possible to increase or decrease the number of ASI receiving units 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 terminal 300 or 301 or the CCTV video relay terminal 400 or 401 And receives the DVB-ASI signal output from the ASI transmitting unit through the coaxial cables 388 and 488. The coaxial cables 388 and 488 are connected to the coaxial cables 388 and 488, respectively. The second ASI receiving unit 820 of the present embodiment is provided with a corresponding number of CCTV video management terminals 300 and 301 or CCTV video relay terminals 400 and 401 located within 300 to 400M of DVB- And the number of the second ASI receiving unit 820 may be changed according to the service policy, the specification of the coaxial cable, or the embodiment.

Each corresponding second demodulator 830 is connected to each second ASI receiver 820 of the present embodiment and demultiplexes the video signal received by the corresponding second ASI receiver 820 to generate an N-channel compressed video signal And inputs them to the IP transmitting means 850. The division of each channel can be configured by PID.

The IP transmission means 850 of the fourth embodiment receives the compressed video signal of each channel from each first ASI receiving unit 810 or each demux 830 connected to the second ASI receiving unit 820, IP addresses of the same public IP address are generated and transmitted to the CMS 710, the VMS 720, the NVR 730, and the storage server 750, respectively.

The IP transmission means 850 of the present embodiment receives each channel compressed video signal input from the first ASI receiving unit 810 or demultiplexed from the demux 830 and divides each channel by the PID, IP data forming means for forming IP data of a protocol corresponding to a receiving side according to a port number and a public IP address assigned thereto; And a connecting means.

The IP transmission means 850 of the embodiment of the present invention receives the compressed video signals of the respective channels from the DEMUX while the IP transmission means 530 of the third embodiment receives the compressed video signals of the respective channels from the first ASI receiving portion 810 or the DEMUX 830, The IP transmission means 530 of the third embodiment has the same configuration as the IP transmission means 530 except that the compressed video signal of each channel is received from the IP transmission means 530 of the third embodiment.

The CCTV video signal IP transmitter 900 of the fifth embodiment of the present invention shown in FIG. 9 includes an HD-SDI receiver connected directly to several tens to several hundred HD cameras via a coaxial cable 228 to receive an HD-SDI signal, A video signal compression means for compressing video signals of each camera by H.264; a video signal compression means for compressing the video signals of the respective cameras by H.264; And an IP transmission unit 930 for forming IP data by an IP address and transmitting the IP data to the CMS 710, the VMS 720, the NVR 730, the storage server 750, and the like.

It is obvious that the scope of the present invention is not limited to the above embodiments but is defined by the matters defined in the claims of the present invention and includes various modifications and alterations made by those skilled in the art within the scope of the claims.

100,500,800 ......... CCTV video signal IP transmitter
110, 510, 820, 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 ............. DIMUX

Claims (8)

An image signal compression means for compressing an HD video signal output from the camera module; a video signal compression means for compressing the video signal generated by the video signal compression means to a DVB-ASI signal And an ASI transmitting unit for transmitting the DVB-ASI signal to the coaxial cable, the N ASI receiving unit receiving the DVB-ASI signal through the coaxial cable from the HD camera;
An IP transmission means for assigning a separate port number for each channel corresponding to each of the HD cameras to the compressed video signal of the HD camera received by each of the ASI receiving units and forming IP data with one public IP address to perform IP transmission And the CCTV video signal IP transmitter is configured to include the CCTV video signal.
ASI compressed video signal from an image compressing and transmitting means for receiving an HD-SDI video signal from an HD camera capturing a CCTV video, compressing the received video signal, converting the DVB-ASI signal to a coaxial cable, N ASI receivers for receiving the ASI signals;
An IP transmission means for assigning a separate port number to each HD camera's corresponding compressed video signal received by each of the ASI receiving units and forming IP data with one public IP address, Wherein the CCTV video signal IP transmitter comprises:
An image signal captured by N HD cameras is compressed in real time for each channel corresponding to each HD camera, and at least one of DVB-ASI image signals formed after multiplexing N compressed video signals is received through a coaxial cable An ASI receiving unit of the ASIC;
A demultiplexer for demultiplexing a multiplexed compressed video signal received by the corresponding ASI receiver and outputting a compressed video signal of N channels corresponding to N HD cameras;
And IP transmission means for converting a channel compressed video signal of each of the demux outputs to IP data and transmitting the IP data to an IP by assigning a different port number to each of the channels, CCTV video signal IP transmitter.
At least one first ASI receiver for receiving a DVB-ASI video signal formed after a single-channel video by the HD camera is compressed in real time;
An image signal captured by N HD cameras is compressed in real time for each channel corresponding to each HD camera, and at least one of DVB-ASI image signals formed after multiplexing N compressed video signals is received through a coaxial cable A second ASI receiving unit;
A demultiplexer for demultiplexing a multiplexed video signal received by a corresponding second ASI receiver and outputting a compressed video signal of each channel corresponding to each HD camera;
A separate port number is designated for each of the channels, and the channel-compressed video signals of the first ASI receiving unit and the respective demux outputs are converted into IP data by the same transmitting-side public IP address, And transmitting means for transmitting the CCTV video signal to the IP transmitter.
N HD-SDI receiving units connected to the HD cameras through coaxial cables to receive HD-SDI signals of the respective channels corresponding to the HD cameras;
And IP transmission means for assigning a different port number to each of the channels and forming IP data based on a single public IP address according to a protocol of the reception side for IP transmission. .
The IP communication system according to any one of claims 1 to 5,
Wherein the compressed video signal of each of the HD cameras is formed by IP data formed by one of RTSP, RTCP, RTP, ONVIF, and UDP and transmitted.
The IP communication system according to any one of claims 1 to 5,
And transmitting the IP data to one of a VMS, a CMS, an NVR, and an image storage server.
The CCTV system according to any one of claims 1 to 5, further comprising a storage device for storing a compressed image of each HD camera received by the IP transmitter of the CCTV video signal for each channel corresponding to each HD camera, Signal IP transmitter.

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