KR100869150B1 - Netwok video server system - Google Patents

Abstract

A network video server system is provided to improve the security of the network video server due to the video server having private internet protocol without additional equipment for guaranteeing QoS. An audio/video interface part transmits image signal and voice signal inputted from a camera(10). An A/V module converts and compresses the image signal and voice signal, inputted from the audio/video interface part, a digital signal. A DIO interface unit transmits the digital input information inputted from a sensor which senses movement. A first interface unit transmits the digital signal between a main control module of the video server(100) and a packet switching module equipped in a media stream server.

Description

Network Video Server System {NETWOK VIDEO SERVER SYSTEM}

1 is a configuration diagram of a network video server system according to an exemplary embodiment of the present invention.

2 is a block diagram of a video server according to an embodiment of the present invention;

3 is a block diagram of a media stream server according to an embodiment of the present invention;

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

10: camera 100: video server

110: user interface unit 120: first interface unit

130: camera interface unit 140: DIO interface unit

150: main module 160: A / V module

170: audio and video interface unit 200: media stream server

210: user interface unit 220: main module

230: packet switching module 240: SRAM

270: second interface unit 300: optical converter

400: DVR server 500: user terminal

The present invention relates to a video server, and more particularly, to a network video server system for transmitting a photographed video signal and an audio signal to a network and outputting the same to a user terminal.

The needs of group residents such as companies, institutions, and apartments are provided with fast and secure communication services, and service providers and managers can provide multimedia such as data / voice / video on the same network in consideration of economy and ease of maintenance. It is progressing toward establishing a communication network for use.

In addition, there is a need for an integrated security problem for such a communication service, and various security solutions have been released to solve this problem. However, the individual deployment of these solutions requires a lot of deployment costs and many safety problems are found.

To solve this problem, there is a trend to integrate video and audio over data communication-oriented IP networks. This trend has led to an Internet network that can be installed at a low cost, easily scalable, and flexible in real-time monitoring and storage, in place of traditional closed-circuit television (CCTV) and digital video recorder (DVR) solutions. Many video servers and network cameras have been released.

Many video servers currently on the market provide LAN ports that can create and transmit high-quality digital data using MPEG (Moving Picture Experts Group) -4, etc., up to 4 channels of analog video, and P / T / Z. It provides (Pan / Tilt / Zoom) connector and alarm sensor input / output port to handle video and audio signals at low cost through intranet and internet.

However, network video servers and cameras, which solve many problems of existing CCTV and DVR systems, require additional equipment due to LAN cable's distance limitation (about 100m) when installing large capacity, and the Internet of other users sharing communication system. It is difficult to guarantee the quality of service (QoS) depending on the usage, and additional equipment is required to secure security. In addition, to build a flexible monitoring environment, each video server must be assigned a public IP.

Accordingly, while maintaining the advantages of the existing network video server and camera, there is a need for a solution that can easily build a large-capacity system as well as a small-capacity, secure QoS and security, and a more flexible configuration.

An object of the present invention is to provide a video server system for receiving video signals and audio signals of 16 channels, compressing them to MPEG-4, and interworking with the Internet network.

The present invention devised to achieve the above object is as follows. The network video server system of the present invention includes an audio / video interface unit for transmitting a video signal and an audio signal input from a camera, and an A / V for converting and compressing the video and audio signals input from the audio / video interface unit into digital signals. Module, a DIO interface unit for transmitting digital input information input from a sensor for detecting a motion, a voice output unit for outputting a voice alarm broadcast, and image data and audio data compressed by the A / V module, and the DIO interface A video server having a main control module for controlling the output of the voice alarm broadcast by outputting voice data to the voice output unit when the digital input information is transmitted through a video unit; and image data transmitted from the main control module provided in the video server. Packet switch to switch voice data A media stream server having a switching module, an SRAM storing switch function information and data switched by the packet switching module, and a main control module controlling the packet switching module, the main stream module of the video server and the media stream server. A first interface unit for transmitting the digital signal between the packet switching modules, and a second interface unit for transmitting the video data and audio data transmitted from the packet switching module of the media stream server to the DVR server through the Internet. And a DVR server for storing and managing the video data and audio data transmitted through a two interface unit and transmitting the digital signal to a user terminal for outputting the digital signal.

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The first interface unit is characterized in that the 100Base-FX optical ethernet method.

The second interface portion is characterized in that the 1000 Ethernet-LX of the optical ethernet method, the second interface portion is characterized in that it is installed in a redundant structure.

The video server includes a camera interface unit connected to a receiver box for controlling the P / T / Z of the camera, and performs P / T / Z control on the camera according to a control command input from the user terminal. It is done.

The main module of the media stream server checks a user ID and password input from the user terminal, and classifies into multiple levels according to the user ID and password to restrict access to the media stream server according to the level. And a filtering function for the IP list of the user terminal.

The media stream server may be connected to a user terminal through an optical converter for converting a 10 / 100Base-FX signal into a UTP signal to output the image data and the audio data to the user terminal.

Hereinafter, a video server according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, the definitions of these terms should be made based on the contents throughout the specification.

1 is a block diagram of a network video server system according to an embodiment of the present invention, FIG. 2 is a block diagram of a video server according to an embodiment of the present invention, and FIG. 3 is a diagram of a media stream server according to an embodiment of the present invention. It is a block diagram.

As illustrated in FIG. 1, a network video server system according to an embodiment of the present invention processes a plurality of cameras 10, video signals and audio signals photographed by the cameras 10, and transmits them to 100Base-FX. The server 100 and a media stream server 200 for processing data transmitted from the video server 100 and transmitting to the DVR server 400 is connected to the Internet by 1000Base-LX.

In addition, the media stream server 200 is connected to the optical converter 300 by 10 / 100Base-FX, and the optical converter 300 converts the 100Base-FX signal into a UTP cable signal and transmits it to the terminal 500. Accordingly, the user terminal 500 outputs the image data and the audio data transmitted through the UTP cable signal, so that the user can monitor in real time.

Here, the video server 100 is connected to the media stream server 200 through a 100BASE-FX port, and the media stream server 200 transmits the video data and the audio data transmitted from the video server 100 to the second interface unit 270. Uplink to the 1000Base-LX port, which is an Ethernet port. The media stream server 200 is provided with two 1000Base-LX ports and installed in a line duplex structure, and sufficient bandwidth can be guaranteed by using 1000Base-LX.

In addition, as described above, the video server 100 and the media stream server 200 may be connected to 100Base-FX to support a long distance compared to a LAN cable.

In addition, in the present embodiment, the video server 100 may process video and audio signals of 16 channels, and the media stream server 200 may accommodate 24 video servers 100. The stream server 100 may install 384 cameras 10.

First, the video server 100 includes an A / V module 160, a main control module 150, a user interface 110, a LAN interface 120, a camera interface 130, a DIO interface 140, and an audio / video interface ( 170) and a voice output unit 180.

The A / V module 160 includes a plurality of video encoders 166, a field programmable gate array (FPGA) 164, a pulse code codulation (PCM) codec (168), and an amplifier encoder (162).

When an analog video signal is captured by the camera 10 and an analog video signal is input from the audio video interface 170, the video encoder 166 connected to each camera 10 through the audio video interface 170 is an analog video signal input from the camera. To a digital signal. In this embodiment, four A / V modules 160 are provided, and four A / V modules 160 are input with four channels of video and audio signals.

The FPGA 164 mixes the digital signal input from the video encoder 166 and outputs the mixed signal to the MPEG encoder 162.

The PCM codec 168 receives an analog audio signal from the audio and video interface 170, changes the signal to a PCM method, and outputs the analog audio signal to the MPEG encoder 162.

The MPEG encoder 162 compresses and converts a digital signal input from the FPGA 164 in an MPEG-4 manner, and can receive up to four channels of video inputs. Receive input. When the MPEG encoder 162 uses up to 4 channels, each video input can process an MPEG-4 signal having a 320 × 240 resolution of 30 fps and a 720 × 480, 720 × 240, or 640 × 480 resolution of 30 fps. Only one channel is accommodated. In addition, it can process four channels of 720 x 480, 720 x 240, or 640 x 480 resolution 7.5fps according to the user's request.

The voice output unit 180 processes the voice data input from the main control module 150 to output a voice alert broadcast through a speaker (not shown) installed outside.

The main control module 150 controls the video server 100 according to the present embodiment and controls the video server 100 according to various control commands input from the user. For example, to change the setting and operation of various equipment and to monitor and manage the function or to output the voice data to the voice output unit 180 to output a voice alarm broadcast. In addition, the camera 10 is connected to a receiver box (not shown) for P / T / Z control so as to freely control the camera 10.

In addition, it is connected to the user terminal 500 through an optical converter 300 that converts the 100Base-FX signal into a 100Base-T signal, so that the user can monitor in real time through the user terminal 500, and 100Base- The FX port is connected to the media stream server 200 to transmit and receive video data, audio data, and various control data.

The user interface unit 110 is connected to the main module 150 to transmit various control commands of the user, the user through the user interface 110 of the above-described various control commands, that is, the setting, operation of Control change, monitoring and management functions, and alarm broadcast output.

The first interface unit 120 has a 100Base-FX port and is connected to an external LAN to enable voice / video / data communication.

The camera interface 130 is connected to a receiver box for P / Z / T control of the camera 10 to control the camera 10.

The DIO interface unit 140 transmits digital input information transmitted from various sensors such as an infrared sensor (not shown) that detects motion to the main module 150.

Next, the media stream server 300 includes a user interface 210, a main control module 220, a static random access memory (SRAM) 240, a packet switching module 230, a plurality of second interface units 270, A plurality of first interface unit 120 is provided.

The media stream server 300 is connected between the terminal 500 and the video server 100 to transmit and receive various control data and video data and audio data, thereby distributing the management function for the video server 100, 1 A plurality of video servers 100 may be connected to the media stream servers 300 to control the video servers 100, thereby facilitating management of the video server 100 and the camera 10.

The second interface unit 270 is connected to the DVR server 400 and uplinks the video data and audio data transmitted from the video server 100 to the DVR server 400. The line has an optical Ethernet port. Is 1000Base-LX. In addition, it is installed in a line redundancy structure to ensure the reliability of the line. As such, sufficient bandwidth can be guaranteed by using 1000Base-LX.

The first interface unit 120 is connected to the video server 100 to receive image data and audio data from the video server 100. The line is 100Base-FX, which is an optical ethernet method. The first interface unit 120 is individually connected to the video server 100.

The packet switching module 230 performs an L2 switch function for the 100Base-F port and the 1000Base-LX port, and provides a private IP function (IP function) to the video server 100 connected to the 100Base-FX. To improve security. The packet switching module 230 transmits to the DVR server 400 by performing an L2 switch function, and secures a bandwidth of QoS by using an optical path and securing bandwidth through packet switching. .

The SRAM 240 stores L2 switch function information and data performed by the packet switching module 230.

The main control module 220 controls the overall functions of the media stream server 200, and controls the media stream server 200 according to various control commands input from the user interface unit 210 and from the packet switching module 230. The input image data and the audio data are transmitted to the DVR server 400 through the first interface unit 120.

In addition, to set the user ID (ID) and password input from the user, and to check the user ID and password, and to divide the user into multiple levels according to the user to restrict access to each user, By providing a filtering function for the connected IP list, the security function for the user is improved.

Finally, the DVR server 400 stores the video data and the audio data transmitted from the first interface unit 120 of the media stream server 200 and transmits them to the terminal 500. Accordingly, the user outputs the image photographed by each camera 10 through the terminal 500.

The operation of the network video server system according to an embodiment of the present invention will be described in detail.

First, in the process of outputting a captured image and audio according to an embodiment of the present invention, when the second camera 10 captures an image, the captured analog image signal and the audio signal are each channel through the audio and video interface unit 170. The video encoder 166 and the audio codec 168 are separately input.

Here, the analog video signal is converted into a digital signal by the video encoder 166 and input to the FPGA 164, the FPGA 164 mixes the digital signal input from each video encoder 166 to the MPEG encoder 162 To send.

In addition, the analog voice signal is changed to the PCM method by the PCM codec and input to the MPEG encoder 162.

The MPEG encoder 162 compresses and converts the input digital signal in MPEG-4. At this time, it can be processed in various resolutions according to the needs of users.

The main module 150 reads the digital signal compressed and converted by the MPEG encoder 162 and transmits the digital signal to the media stream server 200 through the optical path of the first interface unit 120.

When the media stream server 200 transmits the video data and the audio data from the 100Base-FX port of the first interface unit 120, the main module module 220 of the media stream server 200 controls the packet switching module 230. By performing the video data and audio data L2 switching function input from the 100Base-FX port is output to the second interface unit 270 connected to the DVR server 400.

Video data and audio data are transmitted to the DVR server 400 through the 1000Base-LX port of the second interface unit 270, and the DVR server 400 processes, stores and controls the video data and the audio data. . Through this, the user can simultaneously monitor multiple screens through the terminal 500 and can change the screen enlargement and division methods.

In addition, the user inputs various control commands through the terminal 500. The user inputs various control commands through the user interface 210 provided in the media stream server 200 and the user interface 210 provided in the video server 100. Control commands can be entered. Accordingly, the main control module 220 provided in the media stream server 200 and the main control module 150 provided in the video server 100 output corresponding control signals according to the input control command, thereby setting and operating the equipment. Change, monitor and manage

The present invention is not limited to the above-described embodiments and can be carried out in various modifications within the scope of the technical idea of the present invention.

According to the present invention configured as described above, it is possible to process, store and control up to 16 channels of video data and audio data in one PC environment, to monitor multiple screens simultaneously, and to enlarge and divide screens as necessary. You can change the way.

In addition, since the media stream server uses 1000Base-LX and the packet switching function, the QoS guarantee for video and audio data of the video server can be improved, so that no additional equipment for QoS guarantee is required. Can have a security can be improved.

In addition, 100Base-FX can be connected between the video server and the media stream server to transmit data over much longer distances than conventional LAN cables.

Claims (8)

Audio and video interface unit for transmitting the video signal and audio signal input from the camera, A / V module for converting and compressing the video signal and audio signal input from the audio and video interface unit, and from the sensor for detecting the motion DIO interface unit for transmitting the input digital input information, audio output unit for outputting the voice alarm broadcast and image data and audio data compressed by the A / V module is read, and the digital input information is transmitted through the DIO interface unit A video server having a main control module for outputting voice data to the voice output unit and for outputting the voice alarm broadcast; A packet switching module for switching image data and audio data transmitted from the main control module included in the video server, an SRAM for storing switch function information and data switched by the packet switching module, and a main control module for controlling the packet switching module. A media stream server having a; A first interface unit for transmitting the digital signal between a main control module of the video server and a packet switching module included in the media stream server; A second interface unit for transmitting the video data and audio data transmitted from the packet switching module of the media stream server to the DVR server through the Internet; And And a DVR server for storing and managing the video data and audio data transmitted through the second interface unit and transmitting the digital signal to a user terminal for outputting the digital signal. delete The network video server system as claimed in claim 1, wherein the first interface unit is 100Base-FX, which is an optical ethernet method. The network video server system as claimed in claim 1, wherein the second interface unit is 1000Base-LX, which is an optical Ethernet method. The network video server system of claim 4, wherein the second interface unit is provided in a redundant structure. According to claim 1, wherein the video server has a camera interface connected to the receiver box for P / T / Z control of the camera P / T / Z for the camera according to the control command input from the user terminal A network video server system comprising performing control. The media stream module of claim 1, wherein the main control module of the media stream server checks a user ID and a password input from the user terminal, and divides the media stream according to the level by dividing it into multiple levels according to the user ID and password. And limiting access to the server, and filtering the IP list of the user terminal. 4. The media stream server of claim 3, wherein the media stream server is connected to a user terminal through an optical converter for converting a 10 / 100Base-FX signal into a UTP signal to output the image data and audio data to the user terminal. Network video server system.

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