KR20140038209A - A camera for taking a movie for a cctv, an image compression and transmission device for a cctv, an image management cell for a cctv, a relay cell for relaying cctv image signal, and an image management system for a cctv - Google Patents

Abstract

The present invention relates to a CCTV image management terminal. The CCTV image management terminal comprises a plurality of ASI receiving units receiving a DVB-ASI image signal formed after an HD-SDI image of a single channel produced by an HD camera is compressed in real time; a mux unit receiving and multiplexing signals of the ASI receiving units and outputting the multiplexed signals; and an ASI transmission unit converting the output of mux into the DVB-ASI and transmitting the same. [Reference numerals] (330) Image storage unit; (331) Image playback unit; (333) Service unit; (AA) Network

Description

CTV video recording camera, CTV video compression transmission device, CTV video management terminal, CTV video relay terminal, and CTV video management system {A Camera For Taking A Movie For A CCTV, An Image Compression And Transmission Device For A CCTV, An Image Management Cell For A CCTV, A Relay Cell For Relaying CCTV Image Signal, And An Image Management System For A CCTV}

The present invention relates to the long-distance transmission of HD-CCTV video, and more particularly, by compressing the video of the HD camera and then transmitted to the DVB-ASI CCTV video camera, CCTV video to efficiently transmit the multi-channel video over a long distance Compression transmission device, CCTV video management terminal, CCTV video relay terminal, and CCTV video management system.

CCTV (Closed Circuit Television) is an IP network that can transmit HD video without any deterioration in image quality as HDTV era has shifted from SD (720x486, NTSC) resolution to HD (1920x1080, HD1080p) level. The method was proposed and became common.

For example, in the IP network method of FIG. 1, the video captured by the HD camera 10 is compressed by H.264 to the video server 20 on the network 12 via TCP / IP via LAN. 20 is a method of storing the received compressed image to the DVR (21) and providing a video service through the network at the request of the client (11).

However, since the IP network system transmits the compressed video, there may be a deterioration in the quality of the surveillance video, and transmission delay, image distortion, and recording effects due to errors in the network 12 may occur. In addition, there is a problem that can be a significant burden to the existing small-system operators because the system using the coaxial cable requires more cost and technology for design and operation.

 Instead of such an IP network method, as shown in FIG. 2, by transmitting a digital data of about 1.5 Gb / s to the DVR 21 without compressing the HD video by the existing coaxial cable system, an image without deterioration in image quality is obtained. Introduced HD-SDI (High Definition Serial Digital Interface) transmission 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.

An object of the present invention, by using a coaxial cable infrastructure, can efficiently transmit the video of the HD camera at a long distance, CCTV video recording camera, CCTV that can be remotely transmitted video of multiple HD cameras using one coaxial cable It is to implement a video compression transmission device, CCTV video management terminal, CCTV video relay terminal, and CCTV video management system.

Another object of the present invention, by configuring the most important part of the infrastructure for remote transmission and storage of the image by the coaxial cable CCTV video cameras, CCTV video compression transmission device, capable of storing high quality video without being affected by network errors, It is to implement CCTV video management terminal, CCTV video relay terminal, and CCTV video management system.

CCTV image photographing camera according to the present invention for achieving the above object, the camera module for outputting the image signal by taking an image for CCTV; Video signal compression means for compressing the HD video signal output from the camera module; And ASI transmission means for converting the video signal generated by the video signal compression means into a DVB-ASI signal and transmitting the same through a coaxial cable.

CCTV image compression transmission apparatus according to the present invention for achieving the above object, HD-SDI receiving unit for receiving the HD-SDI video signal from the HD camera for photographing the CCTV image; Video signal compression means for compressing the video signal received by the HD-SDI receiver; And ASI transmission means for converting and compressing the compressed video signal generated by the video signal compression means into a DVB-ASI signal.

The video signal compressing means compresses the video signal by H.264 and outputs the compressed video signal.

CCTV image management terminal according to the present invention for achieving the above object comprises a plurality of ASI receiving unit for receiving a DVB-ASI video signal formed after the real-time compression of a single channel image by the HD camera; A mux for receiving the signals of the ASI receiving units and multiplexing them; ASI transmission means for converting the mux output video signal to DVB-ASI for transmission.

CCTV image management terminal according to the present invention for achieving the above object comprises: a plurality of first ASI receiving unit for receiving a DVB-ASI video signal formed after the real-time compression of a single channel image by the HD camera; A second ASI receiver for receiving a DVB-ASI video signal formed after the video signals photographed by the plurality of HD cameras are compressed in real time for each channel corresponding to each camera, and the video signals of all the channels are multiplexed; A mux for receiving and multiplexing the signals of each of the first ASI receivers and the signals of the second ASI receivers; It characterized in that it comprises an ASI transmission means for transmitting the mux output to DVB-ASI.

CCTV image relay terminal according to the present invention for achieving the object, the video captured by a plurality of HD cameras are compressed in real time for each channel corresponding to each camera and the DVB-ASI video signal formed after the entire channel is multiplexed again At least one ASI relay receiver; A relay mux for receiving signals of the ASI relay receivers and multiplexing the signals; And an ASI relay transmission means for transmitting the relay mux output to the DVB-ASI.

CCTV image management system according to the present invention for achieving the above object, CCTV image management terminal; Receiving a video signal transmitted from at least one ASI transmission means by DVB-ASI, demultiplexing the received video signal and storing for each channel, CCTV video management server for providing the stored video service at the client's request Characterized in that the configuration.

CCTV image management system according to the present invention for achieving the above object, the CCTV image management terminal; At least one ASI relay receiver for receiving at least one CCTV video signal compressed and multiplexed for each channel by a DVB-ASI and a plurality of received ASI relay receiver video signals. A CCTV video relay terminal including a mux and an ASI relay transmission means for transmitting the relay mux output to a DVB-ASI; Receives a video signal transmitted to DVB-ASI by at least one ASI transmission means or at least one ASI relay transmission means, demultiplexes the received video signal and stores it for each channel, and stores the stored video according to a client's request. It is characterized in that it comprises a CCTV image management server to provide a service.

According to the above configuration, the present invention can efficiently transmit images of a plurality of HD cameras over a long distance by using a conventional coaxial cable, and remotely transmits images of a plurality of HD cameras using one coaxial cable. It is possible.

In addition, the most important part of remote transmission and storage of images is the use of coaxial cable, which enables high quality image transmission, storage and monitoring without being affected by network error.

1 is a schematic diagram illustrating a conventional IP network type CCTV system.
Figure 2 is a schematic diagram illustrating a CCTV system for transmitting CCTV video in a conventional HD-SDI method.
Figure 3 is a schematic diagram illustrating the configuration of a preferred embodiment of the CCTV image management system of the embodiment of the present invention.
Figure 4 is a schematic diagram illustrating a state of use of the CCTV image management terminal of the first embodiment of the present invention.
5 is a schematic diagram illustrating a configuration of a CCTV video camera according to an embodiment of the present invention.
Figure 6 is a schematic diagram illustrating the configuration of a CCTV video compression transmission apparatus of an embodiment of the present invention.
Figure 7 is a schematic diagram illustrating another use state of the CCTV image management terminal of the first embodiment of the present invention.
Figure 8 is a schematic diagram illustrating the use state of the CCTV image management terminal of the second embodiment of the present invention.
Figure 9 is a schematic diagram illustrating the configuration of a second preferred embodiment of a CCTV video relay terminal of the embodiment of the present invention.
10 is a schematic diagram illustrating a configuration of a second preferred embodiment of a CCTV video relay terminal of an embodiment of the present invention.

With reference to the accompanying drawings the configuration of a preferred embodiment of a CCTV video camera, CCTV video compression transmission device, CCTV video management terminal, CCTV video relay terminal, and CCTV video management system according to the present invention having the configuration as described above It demonstrates in detail.

CCTV video management system according to an embodiment of the present invention shown in Figure 3, after receiving the video signal of each HD camera is compressed and output to DVB-ASI and multiplexed after switching to the DVB-ASI CCTV video management terminal ( 100,500, and a CCTV video relay terminal 200 for receiving and multiplexing the outputs of the plurality of CCTV video management terminals (100,500) and outputting the DVB-ASI, and the CCTV video management terminal (100,500) or CCTV video relay terminal (200) Receiving and storing the output of the DVB-ASI and includes a CCTV video management server 300 for providing a service of the video of the channel in response to the request of the client (301).

CCTV image management terminal 100 of the first embodiment shown in Figure 4 is a plurality of ASI receiver 110 for receiving a DVB-ASI video signal formed after the real-time compression of a single channel HD image by the HD camera 101 ), A mux 120 for receiving multiplexed signals from the ASI receiving unit 110 and outputting the multiplexed signal, and an ASI transmission unit 130 for converting the mux output to DVB-ASI for transmission.

The CCTV video management terminal 100 of the first embodiment compresses the video signal output from the camera module 610, and then converts the DVB-ASI signal into a DVB-ASI signal and transmits the output of the CCTV video shooting camera 600 of the present embodiment. It is possible to receive at the ASI receiver.

For example, the CCTV image capturing camera 600 shown in FIGS. 5 and 7 includes a camera module 610 for capturing an HD image for CCTV and outputting a video signal, and an output from the camera module 610. The video signal compression means 620 for compressing the video signal to be converted, and the ASI transmission means 630 for converting the video signal generated by the video signal compression means 620 generated by converting the DVB-ASI signal.

The CCTV image photographing camera 600 of the present embodiment is an HD camera for photographing CCTV images of HD (1920x1080, HD1080p) level, and the video signal compression means 620 outputs the output of the camera module 610 to H.264 (MPEG 4). Compression, and the ASI transmission means 630 converts the H.264 compressed video signal into a DVB-ASI signal and transmits the same to the CCTV video management terminal (100,500) through the coaxial cable 108.

Meanwhile, the CCTV video management terminal 100 according to the embodiment of the present invention receives the HD-SDI video signal of the general HD camera 101 by the coaxial cable 102, compresses it, and outputs it to the DVB-ASI. It is possible to receive the output of the ASI reception unit 110.

For example, the CCTV video compression transmission apparatus 700 of the present embodiment shown in Figure 6, the HD-SDI receiving unit for receiving the HD-SDI video signal from the HD camera 101 for capturing CCTV images via the coaxial cable 102 710, a video signal compression unit 720 for compressing the received video signal, and an ASI transmission unit for converting and transmitting the compressed video signal generated by the video signal compression unit 720 into a DVB-ASI signal. 730).

The video signal compression means 720 of the CCTV video compression transmission apparatus 700 of the present embodiment compresses H.264 (MPEG 4), and the ASI transmission means 730 converts the H.264 compressed video signal into a DVB-ASI signal. Transfer to the CCTV video management terminal 100 through the coaxial cable (103).

Meanwhile, in the embodiment of the present invention, the video signal of the HD camera 101 or the CCTV video camera 600 is compressed by H.264, but in another embodiment, the video signal is compressed to compress HD video quality. It is also possible to use a scheme such as High Efficiency Video Coding (HEVC) or MPEG 2 compression.

The CCTV video management terminal 100 of the present embodiment is configured to connect up to N CCTV video cameras 600 or CCTV video compression transmission apparatus 700 with coaxial cables 108 and 103, respectively, and corresponding N ASI receivers. 110.

The mux 120 of the CCTV image management terminal 100 of the present embodiment receives and outputs multiplexed H.264 compressed signals input from the N ASI receivers 110, and the mux 120 of the present embodiment ASI receiver 110 The configuration may change depending on the number of channels) or the number of channels of the image to be handled.

The ASI transmission unit 130 of the CCTV image management terminal 100 of the present embodiment receives the output of the mux 120 and converts it into a DVB-ASI format and outputs it through one coaxial cable 105.

On the other hand, the CCTV video management terminal 100 of the first embodiment of the present invention further comprises a storage means for storing H.264 compressed video for each channel to a storage medium DVR and a video reproducing means for outputting an HD video signal to a monitor. It is possible to do

The HD (1920x1080, HD1080p) camera video signal of the present embodiment is a video data having a variable data rate of up to 7 to 8 Mb / s when compressed by H.264, and is transmitted to DVB-ASI using an existing coaxial cable. Since the transmission of video data of 214 Mbps is possible, the number of HD cameras 101 or CCTV video cameras 600 or the number of channels that can be transmitted from the CCTV video management terminal (100,500) or the CCTV video relay terminal 200 is constant accordingly. It may be configured within the range.

In addition, since the video compression means 620 and 720 can also perform H.264 video compression by removing NULL data from the HD video data of the camera, the number of transmission HD cameras can be increased.

In addition, the HD-SDI transmission distance is 100-200m when the existing coaxial cable is used, whereas the DVB-ASI method has a transmission distance of 300-400m. It is possible to efficiently transmit long distance through the.

The CCTV image management terminal 500 of the second embodiment of the present invention shown in FIG. 8 is a DVB-ASI formed after real-time compression of a single channel HD image by an HD camera 101 or a CCTV video camera 600. The video signals captured by the plurality of first ASI receivers 510 and the plurality of HD cameras 101 or CCTV video cameras 600 that receive the video signals are compressed in real time for each channel corresponding to each camera, and then again. A second ASI receiver 550 for receiving a DVB-ASI video signal formed after multiplexing the video signals of all channels, a signal of each of the first ASI receiver 510 and a signal of the second ASI receiver 550; A mux 520 for receiving and multiplexing all of the mux 520 and an ASI transmission unit 530 for transmitting the mux 520 output to the DVB-ASI.

The configurations of the first ASI receiver 510 and the ASI transmitter 530 of the second embodiment are the same as those of the first embodiment ASI receiver 110 and the ASI transmitter 130, respectively. Is further provided with a second ASI receiving means 550, the mux 520 is different in that it multiplexes the output of the first and second ASI receiving means (510, 550).

For example, the second ASI receiving means 550 of the second embodiment may be configured to receive the output of the ASI transmission means 130 of the CCTV image management terminal 100 of the first embodiment by the coaxial cable 105. It is also possible to be configured to receive the output of the ASI transmission means 530 of the other CCTV video management terminal 500 of the second embodiment.

Accordingly, although the CCTV video management terminal 500 of the second embodiment may be directly connected to the CCTV video relay terminal as shown in FIG. 9, a portion of the CCTV video management terminal 500 is ring-shaped as shown in FIG. 10. In this case, the CCTV image management terminal 500 at the previous point to the final destination may perform a function of relaying the transmission signal of the previous CCTV image management terminal 100,500.

In this case, the video signals received by the second ASI receiver 550 of the CCTV image management terminal 500 of the second embodiment are the signals compressed by H.264 received by the N first ASI receivers 510. Multiplexed together by the mux 520 is input to the ASI transmission means (530).

The CCTV image management terminal (100,500) of the second embodiment of the present invention stores and stores the H.264 compressed images received by the N first ASI receiving units (110,510) on a storage medium (e.g., DVR) for each channel. It is possible to have video reproducing means for outputting an image to a monitor.

On the other hand, CCTV image management terminal 500 of the second embodiment may further include a demultiplexing means for demultiplexing the compressed and multiplexed signal received by the second ASI receiving means 550 for each channel, demultiplexing for each channel The video signals may be multiplexed and output from the MUX 520 together with the H.264 compressed signals of the respective channels, which are outputs of the N first ASI receivers 510, and are stored for each channel in a storage device (for example, a DVR). It is possible to output to the monitor by the image reproducing means.

The CCTV video relay terminal 200 according to the embodiment of the present invention shown in FIG. 9 includes K ASI relay receiving means 210 for receiving output signals of K CCTV video management terminals as DVB-ASI, and K ASI relay receiving. A relay mux 220 for multiplexing the video signal received by the means 210, and an ASI relay transmission means 230 for converting the output of the relay mux 220 into a DVB-ASI signal and transmitting the same to the coaxial cable 107. Include.

As shown in FIG. 10, the ASI relay receiving unit 210 of the present invention may receive DVB-ASI output signals of the CCTV image management terminals 100 and 500 of the first or second embodiment, and other CCTVs. It is also possible to be configured to receive the output of the ASI relay transmission means 230 of the video relay terminal 200.

In FIG. 3, the CCTV video management server 300 according to the embodiment of the present invention is configured to receive a DVB-ASI video signal from a CCTV video management terminal 100 or 500 or a CCTV video relay terminal 200 through a coaxial cable 103 and 105. Two ASI receiving means 310, L + 2 demultiplexing means 320 for demultiplexing the received video signal for each channel to be provided corresponding to each ASI receiving means 310, and demultiplexing for each channel Image storage means 330 for storing the H.264 compressed image in a storage medium (for example, DVR) 340, the image playback means 331 and the client 301 to reproduce the image output to the monitor 350 And a service providing unit 333 which provides a service to the client 301 by extracting the image stored for each channel according to the request.

The scope of the present invention is not limited to the above embodiments, but is determined by the matters described in the claims, and it is obvious that the present invention includes various modifications and adaptations made by those skilled in the art in the claims and equivalents.

100,500 ....... CCTV Video Management Terminal 101 ...... HD Camera
102,103,105,107,108 ... Coaxial cable 110 ...... ASI receiver
120,520 ............... mux 130,530,630,730
210 ....... ASI relay receiver 220 ...... relay mux
230 ....... ASI relay transmission means 300 ...... CCTV video management server
301 .... Client 310 ... ASI receiving means
320 ....... Demux 330 ...... Video Storage
331 ....... Video playback means 333 ...... Service provision means
340 ....... DVR 350 ....... Monitor
510 ....... first ASI receiver 550 ....... second ASI
600 ....... CCTV video camera 620,720
700 ....... CCTV Video Compression Transmission Device

Claims (8)

A camera module for outputting an image signal by taking an image for CCTV;
Video signal compression means for compressing the HD video signal output from the camera module;
CCTV video recording camera comprising a video transmission unit for converting the video signal compressed by the video signal compression means to a DVB-ASI signal to transmit a coaxial cable.
An HD-SDI receiver for receiving an HD-SDI video signal from an HD camera for capturing CCTV images;
Video signal compression means for compressing the video signal received by the HD-SDI receiver;
CCTV image compression transmission device comprising a ASI transmission means for converting the compressed video signal generated by the video signal compression means to a DVB-ASI signal for transmission.
The apparatus of claim 2, wherein the video signal compression unit compresses and outputs the video signal by H.264.
A plurality of ASI receivers for receiving a DVB-ASI video signal formed after real time compression of a single channel image by an HD camera;
A mux for receiving the signals of the ASI receiving units and multiplexing them;
CCTV image management terminal comprising the ASI transmission means for converting the mux output video signal to DVB-ASI for transmission.
A plurality of first ASI receivers for receiving a DVB-ASI video signal formed after real time compression of a single channel image by an HD camera;
A second ASI receiver for receiving a DVB-ASI video signal formed after the video signals photographed by the plurality of HD cameras are compressed in real time for each channel corresponding to each camera, and the video signals of all the channels are multiplexed;
A mux for receiving and multiplexing the signals of each of the first ASI receivers and the signals of the second ASI receivers;
CCTV image management terminal comprising an ASI transmission means for transmitting the mux output to DVB-ASI.
At least one ASI relay receiver for receiving a DVB-ASI video signal formed after the images captured by the 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 signals of the ASI relay receivers and multiplexing the signals;
CCTV video relay terminal, characterized in that it comprises a relay transmission means for transmitting the relay mux output to DVB-ASI.
CCTV image management terminal according to claim 4 or 5;
Receiving a video signal transmitted from at least one ASI transmission means by DVB-ASI, demultiplexing the received video signal and storing for each channel, CCTV video management server for providing the stored video service at the client's request CCTV video management system, characterized in that configured by.
CCTV image management terminal according to claim 4 or 5;
At least one ASI relay receiver for receiving at least one CCTV video signal compressed and multiplexed for each channel by a DVB-ASI and a plurality of received ASI relay receiver video signals. A CCTV video relay terminal including a mux and an ASI relay transmission means for transmitting the relay mux output to a DVB-ASI;
Receives a video signal transmitted to DVB-ASI by at least one ASI transmission means or at least one ASI relay transmission means, demultiplexes the received video signal and stores it for each channel, and stores the stored video according to a client's request. CCTV video management system, characterized in that comprises a service providing CCTV video management server.

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