KR20140038201A - A cctv image management cell and cctv image management system - Google Patents

Abstract

The present invention relates to a CCTV image management terminal. The CCTV image management terminal according to the present invention comprises: a plurality of image compression units which receive an HD-SDI image signal from a camera of a predetermined channel photographing a CCTV image, compress and output the HD-SDI image signal; a first mux which receives the output signal from the image compression units, multiplexes, and outputs the signal; and an ASI transmission unit which transmits the output of the first mux to a DVB-ASI. [Reference numerals] (330) Image storage means; (331) Image playback means; (333) Service means; (AA) Network

Description

CCTV Video Management Terminal and CCTV Video Management System {A CCTV Image Management Cell And CCTV Image Management System}

The present invention relates to the long-distance transmission of HD-CCTV video, and more specifically, to compress the HD-SDI video of the HD camera and then transmit the DVB-ASI to CCTV images that enable efficient transmission of multi-channel video over a long distance It is about management 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 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 on the small-scale system operators in the existing system because more cost and technology for the design and operation for the system using the existing coaxial cable.

 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. The HD-SDI transmission scheme was introduced.

However, since the HD-SDI method has a transmission distance of about 150m when using a general cable, and a transmission distance of about 200m when using a dedicated cable, an HD-SDI repeater may be used at regular distances to transmit images remotely. ), And additional equipment such as optical transmission converter is required, which limits the remote transmission. In addition, since it is difficult to transmit two or more channels by one coaxial cable, the image of each channel must be transmitted on a separate line. When the number of channels increases, the line becomes complicated and the cost increases.

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

It is another object of the present invention to implement a CCTV video management terminal and CCTV video management system capable of storing high quality video without being affected by network errors by using a coaxial cable as the most important part for remotely transmitting and storing a video of an HD camera. It is.

CCTV image management terminal according to the present invention for achieving the above object, at least one image compression means for receiving and compressing the HD-SDI video signal from the camera of any channel to shoot CCTV image; A first mux receiving and outputting the output signals of the respective image compression means; ASI transmission means for transmitting the first mux output to the DVB-ASI.

CCTV image management terminal according to the present invention for achieving the above object, at least one image compression means for receiving and compressing the HD-SDI video signal from the HD camera of any channel for photographing CCTV images; At least one ASI receiving unit for receiving a single channel video signal formed by compressing an HD video signal received from another HD channel of another arbitrary channel by DVB-ASI; A first mux receiving and multiplexing both an output signal of each image compression unit and a signal of each ASI receiver; ASI transmission means for transmitting the first mux output to the DVB-ASI.

CCTV image management terminal according to the present invention for achieving the above object, the DVB-ASI is formed after the HD video signal by a plurality of HD cameras are compressed in real time for each corresponding HD camera channel, the compressed video signals are multiplexed An ASI receiver for receiving an image signal; At least one video compression means for receiving the HD-SDI video signal from another HD channel and compressing and outputting the video signal; A first mux receiving and outputting the output signal of the at least one image compression means and the signal of the ASI receiver and multiplexing the output signal; ASI transmission means for transmitting the first mux output to the DVB-ASI.

The first mux includes demultiplexing means for demultiplexing the signal received by the ASI receiving unit for each channel, and the first mux includes the demultiplexed image signal for each channel by the demultiplexing means and the image compression means. And multiplexing and outputting a video signal.

The video compression means receives the HD-SDI video signal from the HD camera, and compresses and outputs the received HD video signal by H.264.

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

CCTV image management system according to the present invention for achieving the above object, CCTV image management terminal; Multiplexing at least one ASI relay receiving means for receiving CCTV video signals compressed and multiplexed for each channel by DVB-ASI, and each CCTV HD video signal received by each ASI relay receiver CCTV video relay terminal including an ASI relay transmission means for transmitting to DVB-ASI; Receives a DVB-ASI video signal transmitted from at least one ASI transmission means or at least one ASI relay transmission means, demultiplexes and stores the received video signal for each channel, and services the stored video at the request of the client. It is characterized by comprising a CCTV image management server to provide.

CCTV image management system according to the present invention for achieving the above object, CCTV image management terminal according to any one of claims 1 to 3; Receiving a DVB-ASI video signal transmitted from at least one ASI transmission means, demultiplexing and storing the received video signal for each channel, including a CCTV video management server for providing the stored video service at the client's request It is characterized in that the configuration.

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 the configuration of a CCTV video management terminal of the first embodiment of the present invention.
5 is a schematic diagram illustrating a configuration of a CCTV image management terminal according to a second embodiment of the present invention.
Figure 6 is a schematic diagram illustrating the configuration of a preferred embodiment of a CCTV video relay terminal of an embodiment of the present invention.
7 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.

Hereinafter, the configuration of a preferred embodiment of a CCTV image management terminal and a CCTV image management system according to a preferred embodiment of the present invention having the configuration as described above will be described in detail with reference to the accompanying drawings.

CCTV image management system according to an embodiment of the present invention of Figure 3, the CCTV image management terminal 100 for receiving and compressing HD-SDI image from the HD camera and output to DVB-ASI, and a plurality of CCTV image management terminal 100 Receiving the DVB-ASI signal from the multiplexed CCTV video relay terminal 200, and outputs the video signal received from the CCTV video management terminal 100 or the CCTV video relay terminal 200 and the client (301) CCTV image management server 300 for providing a stored image service according to the request of the).

CCTV image management terminal 100 of the first embodiment of Figure 4, the video compression means 110 for receiving and compressing the HD-SDI video signal from the HD camera 101 for capturing CCTV images and output, and video compression A first mux 120 for receiving the output signal of the means and multiplexing the output signal, and ASI transmission means 130 for transmitting the output of the first mux 120 to the DVB-ASI.

The HD camera 101 of the present embodiment converts and outputs an image captured by a surveillance camera for HD (1920x1080, HD1080p) class CCTV video recording into an HD-SDI signal, and the HD-SDI video signal is a coaxial cable (102). Through the CCTV image management terminal 100 is input. In this embodiment, one CCTV video management terminal 100 has a configuration in which one to eight HD cameras 101 are connected by coaxial cable 102, but one to four cameras are connected or one to sixteen cameras. It is also possible to be connected is a part that can be changed according to the embodiment.

The video compression means 110 according to the present embodiment receives an HD-SDI video signal input through the coaxial cable 102 from the HD camera 101 through the HD-SDI receiver 111, H.264 (MPEG 4) Compress and print. In another exemplary embodiment, other compression schemes such as HEVC (High Efficiency Video Coding) or MPEG 2 compression for compressing an HD-SDI video signal to HD quality may be performed.

In the present embodiment, when the number of HD cameras that can be connected to the CCTV video management terminal 100 is N, N video compression means 110 is provided to receive HD-SDI video signals of corresponding channels, respectively. 264 Compresses the output.

The first mux 120 according to the present embodiment receives and multiplexes the H.264 signals outputted from the N image compression means 110, and the first mux 110 according to the present embodiment uses the number of the image compression means 110. The configuration may change depending on the number of video channels to be handled.

The ASI transmission unit 130 of the present embodiment receives the signal of the first mux and converts the signal into the DVB-ASI format, and the video signal converted into the DVB-ASI format is output through one coaxial cable 105.

 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 214Mbs of video data can be transmitted, the number of HD cameras or channels that can be transmitted from a CCTV video management terminal or a CCTV video relay terminal can be configured within a predetermined range corresponding thereto.

In addition, since the image compression unit 110 can also compress the H.264 image by removing the NULL data input from the HD camera, the number of transmission HD cameras can be increased.

And, in case of HD-SDI method, the transmission distance is 100 ~ 200m when using existing coaxial cable, while DVB-ASI method has 300 ~ 400m transmission distance. Efficient long distance transmission via cable becomes possible.

CCTV image management terminal 500 of the second embodiment of the present invention shown in Figure 5, N video compression means 510 for receiving and compressing the HD-SDI video signal from the HD camera to shoot CCTV video and outputs; ASI receiving means (550) for receiving the compressed video signal of the single HD camera channel or the video signal of the M channel is compressed by each channel and the entire channel is multiplexed again, and the video A first mux 520 for receiving and outputting the multiplexed output signals of the compression means 510 and the ASI receiving means 550, and an ASI transmission means for converting the first mux 520 output into a DVB-ASI format and transmitting the result; 530.

The configuration of the image compression means 510 and the ASI transmission means 530 of the second embodiment is the same as that of the first embodiment, the ASI receiving means 550 is further provided and the first mux 520 is the image compression means It is different that the outputs of 510 and ASI receiving means 550 are multiplexed.

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

Therefore, the CCTV video management terminal 500 of the second embodiment can configure the system by connecting some of the CCTV video management terminal 500 in a ring shape as shown in FIG. The CCTV image management terminal 500 may perform a function of relaying the transmission signal of the immediate CCTV image management terminal 100, 500.

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

The CCTV image management terminals 100 and 500 according to the first and second embodiments of the present invention receive and compress the images compressed by H.264 by the N image compression means 110 and 510 and store them in a storage medium (for example, a DVR) for each channel. It is possible to have video reproducing means for outputting an image to a monitor. On the other hand, the video reproducing means of the present embodiment can also output the uncompressed video signal streamed in HD-SDI to the monitor as it is.

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 ASI receiving means 550 for each channel, demultiplexed image for each channel The signal may be multiplexed and output from the first mux 520 together with the H.264 compressed signals of the respective channels, which are outputs of the N video compression means 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 relay terminal 200 according to the embodiment of the present invention shown in FIG. 6 includes the K ASI relay receiving means 210 for receiving the output signals of the K CCTV image management terminals through the DVB-ASI, and the K DVB- received. A second mux 220 for multiplexing the ASI signal, and the ASI relay transmission unit 230 for converting the output of the second mux 220 into a DVB-ASI signal and transmitting it to the coaxial cable 107.

As shown in FIG. 7, the ASI relay receiving unit 210 of the present invention may receive the DVB-ASI output signal 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 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 105 and 107. 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 on an image storage medium (for example, DVR) 340, the image playback means 331 and the client 301 to reproduce the image to output to the monitor 350 And a service providing means 333 for providing a service to the client 301 by extracting an image stored for each channel according to a request of the user.

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
102,105,107 ... Coaxial cable 110,510 ... Image compression means
111,511 ......... HD-SDI receiver 120,520 ... first mux
130,530 ....... ASI transmission means 210 ....... ASI relay receiving means
220 ........... 2nd MUX 230 ....... ASI Relay Transmission
300 .......... Server 301 ....... Client
310 ............... ASI receiver 320 ....... Demux
330 .......... Video Saving Means 331 ....... Video Playback Means
333 .......... Service Delivery 340 ....... DVR
350 ........ Monitor 550 ........... ASI receiver

Claims (8)

At least one image compression means for receiving, compressing, and outputting an HD-SDI image signal from a camera of an arbitrary channel photographing a CCTV image;
A first mux receiving and outputting the output signals of the respective image compression means;
CCTV image management terminal comprising the ASI transmission means for transmitting the first mux output to the DVB-ASI.
At least one image compression means for receiving, compressing, and outputting an HD-SDI image signal from an HD camera of any channel for capturing CCTV images;
At least one ASI receiving unit for receiving a single channel video signal formed by compressing an HD video signal received from another HD channel of another arbitrary channel by DVB-ASI;
A first mux receiving and multiplexing both an output signal of each image compression unit and a signal of each ASI receiver;
CCTV image management terminal comprising the ASI transmission means for transmitting the first mux output to the DVB-ASI.
An ASI receiving unit for receiving a DVB-ASI video signal formed after the HD video signals of the plurality of HD cameras are compressed in real time for each corresponding HD camera channel, and the compressed video signals are multiplexed;
At least one video compression means for receiving the HD-SDI video signal from another HD channel and compressing and outputting the video signal;
A first mux receiving and outputting the output signal of the at least one image compression means and the signal of the ASI receiving unit and multiplexing the output signal;
CCTV image management terminal comprising the ASI transmission means for transmitting the first mux output to the DVB-ASI.
The method according to claim 3, wherein the first mux,
And a demultiplexing means for demultiplexing the signal received by the ASI receiver for each channel, wherein the first mux multiplexes the video signal demultiplexed for each channel by the demultiplexing means and the video signal of the video compression means. CCTV video management terminal, characterized in that.
The method according to any one of claims 1 to 3,
The video compression means receives an HD-SDI video signal from the HD camera, and compresses and outputs the received HD video signal by H.264 CCTV image management terminal.
The method according to any one of claims 1 to 3, wherein the CCTV video management terminal receives the HD-SDI video signal from the HD camera to the coaxial cable, the ASI transmission means for transmitting the DVB-ASI video signal to the coaxial cable CCTV video management terminal characterized in that.
CCTV image management terminal according to any one of claims 1 to 3;
Multiplexing at least one ASI relay receiving means for receiving CCTV video signals compressed and multiplexed for each channel by DVB-ASI, and each CCTV HD video signal received by each ASI relay receiver CCTV video relay terminal including an ASI relay transmission means for transmitting to DVB-ASI;
Receives a DVB-ASI video signal transmitted from at least one ASI transmission means or at least one ASI relay transmission means, demultiplexes and stores the received video signal for each channel, and services the stored video at the request of the client. CCTV video management system, characterized in that configured to provide a CCTV video management server.
CCTV image management terminal according to any one of claims 1 to 3;
Receiving a DVB-ASI video signal transmitted from at least one ASI transmission means, demultiplexing and storing the received video signal for each channel, including a CCTV video management server for providing the stored video service at the client's request CCTV video management system, characterized in that configured.

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