KR100839814B1 - Remote video surveillance system and the method for remote video surveillance - Google Patents

Abstract

The present invention discloses a remote video surveillance system and a remote video surveillance method. The remote video surveillance system of the present invention captures an image in a surveillance zone with a plurality of cameras, outputs a video surveillance signal, and is selected in response to a first control signal to correspond to a surveillance apparatus and a plurality of cameras whose movement is controlled. A local surveillance terminal connected to receive an image surveillance signal, convert the image surveillance data into digital image data, and store the digital image data of the specific camera stored in the selected digital video recorders in response to the second control signal; A multiplexer for receiving and multiplexing a plurality of digital image data and transmitting the multiplexed image data to a selected monitor in response to a third control signal; a display unit including a plurality of monitors and converting the digital image data into an analog image signal and outputting the same; To first third in response to the third input And a remote controller for outputting a third control signal. Therefore, according to the present invention, the video monitor can easily and quickly control the camera, reduce the cost required to install security surveillance equipment by adopting a low cost multiplexer and providing a comprehensive surveillance data transmission / reception protocol. Watchers can perform security surveillance tasks in an efficient and easy way.

Description

Remote video surveillance system and the method for remote video surveillance}

1 is a block diagram of a remote video surveillance system using a digital video recorder in accordance with the prior art.

2 is a block diagram of a remote control unit in a general remote video surveillance system.

3 is a block diagram of a remote video surveillance system using a video matrix switcher according to the prior art.

4 is a block diagram of a remote video surveillance system using a digital video recorder according to a first embodiment of the present invention.

5 is a block diagram of a remote video surveillance system using a multiplexer according to a second embodiment of the present invention.

6 is a flowchart illustrating a remote video monitoring method using a multiplexer according to a second embodiment of the present invention.

The present invention relates to a video surveillance system and a video surveillance method, and more particularly, to a video surveillance system using a digital video signal processing device and a remote control device so as to perform a security surveillance task in an efficient and easy manner. The present invention relates to a remote video surveillance method.

Today's video surveillance systems are becoming increasingly important as the need to protect or monitor human or technical resources in a complex and rapidly changing modern society. In particular, the use of the video surveillance system is increasing rapidly for the surveillance of the visitors and securing evidence in corporations, government offices and banks.

The security performance of such a video surveillance system is represented by the automation of the system and the images obtained as a result of the system. The need for automation has arisen from the growing security and surveillance of surveillance areas, and from the problems of early security and surveillance systems that require the watcher to monitor all surveillance areas.

A typical video surveillance system consists of a large number of stationary cameras to monitor intruders. Such a structure of the video surveillance system is difficult to achieve the motion detection automation of the entire surveillance system because the detection of the motion target for each fixed camera is possible within the limited field of view of the limited number of fixed cameras.

On the other hand, digital video signal processing apparatus has been in the spotlight in the field of security surveillance by replacing the existing analog video cassette recorder (VCR) based on digital video compression technology. The digital video signal processing device is a device that digitizes a CCTV (Closed Caption Television) camera image, compresses it, and stores it in a storage medium, so that it is easy to manage and search recorded video, and to monitor a screen even from a remote location. (10-1 ~ 10-16N) has the advantage that it is possible to capture or record the video signal captured at the same time. In addition, the multi-channel video monitoring function can monitor multiple camera images by dividing them into one monitor, enabling simultaneous monitoring of multiple locations.

1 is a block diagram for explaining the configuration of a remote video surveillance system using a digital video recorder according to the prior art, the monitoring device 10, the local monitoring terminal 20, the display unit 30, the remote control unit 40 ). Surveillance device 10 is composed of a plurality of cameras (10-1 ~ 10-16N) (10-1 ~ 10-16N), the local monitoring terminal 20 is a plurality of digital video recorder (Digital video recorder) 20-1 to 20-N, and the display unit 30 includes a plurality of main monitors 31-1 to 3N-1 and a plurality of spot monitors 31-2 to 3N-2. .

First, for convenience of understanding, 64 cameras in the surveillance apparatus 10 of the surveillance zone are installed, and these cameras are formed in groups of 16 and connected to each of the four digital video recorders 20-1 to 20-4. The outputs of the four digital video recorders 20-1 to 20-4 are respectively a plurality of main monitors 31-1 to 3N-1 and a plurality of spot monitors 31 in the display unit 30. -2 to 3N-2).

64 cameras in the monitoring device 10 and the remote control unit 40 are indirectly connected via digital video recorders instead of directly connected to the RS485 serial communication protocol as in a general CCTV control system. Field 31-1 to 3N-1 and each of the plurality of spot monitors 31-2 to 3N-2 receive the outputs of the digital video recorders to deliver the necessary surveillance data to the monitor in the predetermined surveillance space. .

Referring to Figure 1, the function of each block of a remote video surveillance system using a digital video recorder according to the prior art will be described.

The monitoring device 10 outputs a plurality of video surveillance data by capturing an image in the surveillance zone through the plurality of cameras 10-1 to 10-16N and 10-1 to 10-16N.

The local monitoring terminal 20 receives the video signal output from the monitoring device 10 and converts the video signal into digital video signals through the plurality of digital video recorders 20-1 to 20 -N. A digital video recorder or an image transmission camera having a communication interface function corresponds to this. In the case of a digital video recorder, since a storage function is supported, data converted into a digital video signal may be independently stored.

The display unit 60 is connected to the local surveillance terminal 20 through a communication network, and is captured by a camera in the surveillance apparatus 10 connected to a predetermined digital video recorder and transmitted to the local surveillance terminal 20 and stored therein. Is converted into an analog video signal and output from the plurality of main monitors 31-1 to 3N-1 and the plurality of spot monitors 31-2 to 3N-2. The communication network may be a local area network (LAN), a wide area network (WAN), a public switched telephone network (PSTN), an asymmetric digital subscriber line (ADSL), an integrated communication network (ISDN), or the like.

The remote controller 40 receives a control signal CON for selecting a digital video recorder connected to a predetermined camera according to an input input for obtaining image data required by the image monitor on the display unit 30 from the predetermined camera. Output

Here, all the plurality of cameras 10-1 to 10-16N and 10-1 to 10-16N in the monitoring device 10 are connected to the local monitoring terminal 20 by RS485 communication protocol, which is a computer. Is a method of serial communication when communicating with the outside, and utilizes a communication line such as a conventional telephone line to transmit one signal in reverse to each other on two signal lines.

In addition, each of the plurality of main monitors 31-1 to 3N-1 in the display unit 30 receives digital image signal data converted and stored by the plurality of digital video recorders 20-1 to 20 -N. After dividing into one screen or 4, 9, 16 screens, etc., a plurality of screens can be simultaneously viewed according to the selection of the video monitor. At this time, information such as the number, recording time, and recording state of the camera in the monitoring apparatus 10 that has transmitted the corresponding video surveillance signal is also displayed on each screen.

The plurality of spot monitors 31-2 to 3N-2 outputs video surveillance signals of the plurality of cameras 10-1 to 10-16N in the monitoring apparatus 10 and displays them on the entire screen. .

FIG. 2 is a view for explaining the configuration of a remote controller in a general remote video surveillance system, and includes a liquid crystal display 41, a plurality of buttons 42, and a joy stick 43.

Referring to Figure 2 describes the function of each block of the remote control in the general remote video surveillance system as follows.

The liquid crystal display 41 displays a predetermined camera number on which the surveillance data is photographed and a predetermined monitor number on which the surveillance data is currently displayed on the screen and shows it to the video monitor.

The plurality of buttons 42 are composed of a camera number, a monitor number, a camera control mode button, and the like to specify surveillance data captured by a specific camera among the plurality of cameras 10-1 to 10-16N. In order to obtain through a monitor, a specific camera number and a specific monitor number are selected and inputted, and the video surveillance signal processing mode and the camera control mode of the digital video recorder are controlled.

The joy stick 43 is a predetermined camera when the image monitor is required to move the predetermined camera up and down or to the left or to enlarge or reduce the captured image while monitoring the image data being shot by the predetermined camera through the predetermined monitor. Remote control.

Referring to Figures 1 and 2 will be described the operation of the remote video surveillance system using a digital video recorder according to the prior art.

For example, suppose that the monitor wants to obtain image data acquired by the seventeenth cameras 10-17 and 10-17 through the main monitor. The 64 cameras 10-1 to 10-64 in the monitoring apparatus 10 once output image data in all surveillance zones.

The local surveillance terminal 20 receives the surveillance data output from the surveillance apparatus 10 and converts the surveillance data into digital data through four digital video recorders 20-1 to 20-4, respectively, and outputs the digital data.

If the video monitor wants to obtain the monitoring data from the seventeenth camera 10-17 through the main monitor in the display unit 60 in the predetermined surveillance space, the remote controller 40 is applied by applying an input on the remote controller 40. Through the control signal (CON) for selecting the digital video recorder (DVR2) connected to the seventeenth camera (10-17) through the local monitoring terminal 20.

The local monitoring terminal 20 displays only the surveillance data output from the seventeenth camera 10-17 among the digital surveillance data converted through the digital video recorder DVR2 selected by the control of the control signal CON. It is automatically delivered to my main monitor 32-1.

As described above, the remote video surveillance system using the digital video recorder according to the related art is connected to a predetermined camera 10-17 by the remote control unit 40 in order to view an image captured by a camera in the surveillance area that the monitor wants to monitor. Select a specific digital video recorder (DVR2).

If the monitor monitors the image data being shot in a certain surveillance space, suspicious images are captured and the camera is controlled to pan, tilt, zoom in or zoom out the captured image. Assume that a need arises. In this case, the monitor easily selects the predetermined camera 10 by selecting the digital video recorder DVR2 to which the predetermined cameras 10-17 are connected by simple operation of the plurality of buttons 42 in the remote control unit 40. -17) to cause the digital video recorder DVR2 to set the given camera to full screen. Thereafter, the camera control button in the remote controller 40 is pressed to convert the digital video recorder (DVR2) to the camera control mode, and the image captured or captured by the joystick on the remote controller 40 moves up, down, left, and right of the camera 10-17. You can control the zoom in or zoom out.

However, the remote video surveillance system using the digital video recorder according to the prior art has a disadvantage that the control speed of the camera is slowed down because the video monitor indirectly goes through the digital video recorder one more step in controlling the camera in the surveillance area as described above. There is this. This is an unsuitable problem in the general CCTV control system that requires the continuous control of a plurality of cameras.

Next, FIG. 3 is a block diagram illustrating a configuration of a remote video surveillance system using a video matrix switcher according to the related art, and includes a monitoring apparatus 10, a local monitoring terminal 20, a remote control unit 40, and a video. The matrix switcher 50 and the display unit 60 are provided. The monitoring apparatus 10 is composed of a plurality of cameras 10-1 to 10-16N, and the local monitoring terminal 20 is composed of a plurality of digital video recorders 20-1 to 20 -N. The video matrix switcher 50 has a network structure in which connection lines of the plurality of cameras 10-1 to 10-16N in the monitoring apparatus 10 and connection lines of the monitors 61 to 6N in the display unit 60 are meshed therein. With a network mapped to, the display unit 60 is composed of a plurality of monitors (61 ~ 6N).

First, for convenience of understanding, 64 cameras (10-1 to 10-64) are installed in the monitoring device (10) in the surveillance zone, and these cameras (10-1 to 10-64) are grouped by 16 groups. Formed and connected to each of the four digital video recorders 20-1 to 20-4, and the four digital video recorders 20-1 to 20-4 are connected to the video matrix switcher 50, respectively, The output of the matrix switcher 50 is set to be applied to four monitors 61 to 64, respectively.

64 cameras 10-1 to 10-64 are connected to the RS485 serial communication protocol, and a control signal CON of the remote controller 40 is applied to the video matrix switcher 50, and four monitors 61 to 61 are connected. 64 receives the output of the video matrix switcher 50 and delivers the surveillance data required to the monitor.

Referring to Figure 3 will be described the function of each block of the remote video surveillance system using a video matrix switcher according to the prior art.

The connection and functions of the monitoring device 10 and the local monitoring terminal 20 are the same as those of the remote video surveillance system using the digital video recorder according to the related art of FIG. 1, and thus, descriptions thereof will be omitted and only different blocks will be described. Shall be.

The remote control unit 40 is configured in the monitoring apparatus 10 in the network structure network of the video matrix switcher 50 in response to the input of the video monitor in order to obtain the video data required by the video monitor in the predetermined surveillance space from the predetermined camera. The control signal CON for selecting a predetermined contact to which a predetermined camera and a predetermined monitor in the display unit 60 are mapped is output.

The video matrix switcher 50 receives a plurality of digital video signals converted from the local monitoring terminal 20 and a control signal CON of the remote control unit 40 to select a predetermined camera and a predetermined monitor, and then the digital required. Pass the video signal.

The display unit 60 is connected to the video matrix switcher 50 through a communication network, photographed through the cameras 10-1 to 10-64 in the selected surveillance apparatus 10, and transmitted to the local surveillance terminal 20. The digital video signal is stored and converted into an analog video signal and output from the selected predetermined monitor. The communication network may be a local area network (LAN), a wide area network (WAN), a public switched telephone network (PSTN), an asymmetric digital subscriber line (ADSL), an integrated communication network (ISDN), or the like.

Referring to Figure 3 describes the operation of a remote video surveillance system using a conventional video matrix switcher as follows.

For example, suppose that the monitor wants to obtain image data acquired by the seventeenth camera 10-17 through the third monitor 63. The 64 cameras 10-1 to 10-64 in the monitoring apparatus 10 once output image data in all surveillance zones.

The local surveillance terminal 20 receives the surveillance data output from the surveillance apparatus 10 and converts the surveillance data into digital data through four digital video recorders 20-1 to 20-4, respectively, and outputs the digital data.

If the video monitor wants to obtain surveillance data from the seventeenth camera 10-17 by selecting the third monitor 63 on the display unit 60 in a predetermined surveillance space, the application of the input on the remote controller 40 is performed. The control signal CON for selecting a predetermined contact from the network of the network structure to which the camera 10-17 and the monitor 63 are mapped is output to the 64 × 4 video matrix switcher 50.

The 64 X 4 video matrix switcher 50 selects the seventeenth camera 10-17 and the third monitor 63 through the contacts of the network selected by the control signal CON of the remote controller 40 to display four digital. Only the surveillance data output from the seventeenth camera 10-17 among the digital surveillance data converted through the video recorders 20-1 through 20-4 are transferred to the third monitor 63.

As such, the remote video surveillance system using the conventional video matrix switcher applies a digital video signal captured and stored by all the cameras 10-1 to 10-16N in the surveillance apparatus 10 through the video matrix switcher 50. And outputs the image data of the camera in the monitoring apparatus 10 required by the image monitor to a monitor in the desired display unit 60.

At this time, the video monitor selects the camera in the monitoring device 10 and the monitor in the display unit 60 through the control of the remote control unit 40 to obtain the necessary video data from a predetermined monitoring device, and through the RS485 communication protocol. All the plurality of cameras 10-1 to 10-16N in the monitoring device 10 are in serial communication with the video matrix switcher 50.

In this case, the video matrix switcher is a switcher, commonly called a selector, to independently reproduce a plurality of images on one display device by independently selecting a video signal transmitted to the plurality of display devices. Device.

This is convenient because only a simple switch and a remote control can be used when using a display device that needs to be preset with a plurality of display devices at a time, but it is very expensive and is used by security consumers for security surveillance equipment. There was an unsuitable problem below.

In addition, the video matrix switcher sets the names of a plurality of cameras in the monitoring device and controls the movement of the camera up and down and the enlargement and reduction of the image immediately when a specific camera and a specific monitor are selected. When an event such as illegal intrusion occurs, it keeps a record of event occurrence time.

However, these functions are sufficiently handled by the local monitoring terminal, and there was an irrationality for the general consumer to make redundant investments in the same functions.

It is an object of the present invention to easily control the surveillance camera directly to improve the control speed of the surveillance camera, and to provide a low cost multiplexer and a comprehensive surveillance data transmission / reception protocol to reduce the cost of installing security surveillance equipment. To provide a remote video surveillance system.

Another object of the present invention is to provide a remote video surveillance method for achieving the above object.

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In order to achieve the above object, the remote video surveillance system of the present invention includes a plurality of surveillance units composed of a plurality of cameras and outputs an image surveillance signal by capturing an image in the surveillance zone, and the plurality of cameras are connected to the first control signal. And a plurality of digital video recorders connected corresponding to the plurality of monitoring units, each of the plurality of digital video recorders applying a video surveillance signal transmitted from the corresponding plurality of monitoring units. A local monitoring terminal that receives and converts the digital image data into digital image data and outputs the digital image data of a specific camera stored in at least one or more digital video recorders selected in response to the second control signal through predetermined output ports. Remotely authorized A multiplexer configured to flexure and transmit the same to at least one selected monitor in response to a third control signal, a display unit including a plurality of monitors, connected to the multiplexer through a communication network, and receiving digital image data and converting the digital image data into an analog image signal; Output a second control signal in response to a first input designating a specific camera among the plurality of cameras, and output a first control signal in response to a second input specifying a camera for controlling movement among the plurality of cameras And a remote controller configured to output a third control signal in response to a third input designating a specific monitor among the plurality of monitors.

The remote video surveillance method of the present invention for achieving the above object is a surveillance method of a remote video surveillance system comprising a plurality of cameras, a plurality of digital video recorders, a multiplexer, a plurality of monitors and a remote control, At least one remote controller connected to at least one camera as the remote controller inputs a camera number and a monitor number to obtain image surveillance data captured by at least one camera among the plurality of monitors Outputting a second control signal for controlling selection of the at least one digital video recorder and a third control signal for controlling selection of the at least one monitor, wherein at least one digital video recorder is selected in response to the second control signal and the remote control is selected; A current display state determination step of determining whether at least one digital video recorder is operating in an additional current display state, a first data output step of receiving a video surveillance data by the digital video recorder and outputting first data to a predetermined output port; And a second data output step in which the multiplexer receives the first data and outputs the first data to at least one monitor in response to the third control signal of the remote controller.

Hereinafter, the remote video surveillance system of the present invention with reference to the accompanying drawings.

4 is a block diagram for explaining the configuration of a remote video surveillance system using a digital video recorder according to a first embodiment of the present invention. The monitoring apparatus 10, the local monitoring terminal 20, the remote control unit 100, The display unit 60 is provided. The connection relationship with the components of the monitoring apparatus 10, the local monitoring terminal 20, and the display 30 is the same as the case of using the digital video recorder according to the prior art of FIG. However, instead of being applied only to the local monitoring terminal 20, the control signals CON1 and CON2 of the remote control unit 100 are also applied to the plurality of cameras 10-1 to 10-16N in the monitoring apparatus 10. There is a difference.

Similarly, for the sake of understanding, 64 cameras 10-1 to 10-64 are installed in the monitoring device 10 in the surveillance zone, and these cameras 10-1 to 10-64 are grouped into 16 groups. And connected to each of the four digital video recorders 20-1 to 20-4, and the outputs of the four digital video recorders 20-1 to 20-4 are each the main monitor in the display unit 30. Are applied to each of the fields 31-1 to 34-1 and the spot monitors 31-2 to 34-2.

Referring to FIG. 4, the functions of the blocks of the remote video surveillance system using the digital video recorder according to the first embodiment of the present invention will be described below.

Since the functions of the monitoring device 10 and the display unit 30 are almost the same as those of the remote video surveillance system using the digital video recorder according to the related art of FIG. 1, detailed descriptions are omitted here, and only for blocks having different functions. Explain.

Therefore, the point of outputting the video surveillance data in the surveillance zone through the plurality of cameras (10-1 ~ 10-16N) in the monitoring device 10, the plurality of main monitors 31-1 ~ in the display unit 30 3N-1) After each screen is divided into one screen or a plurality of screens, one or a plurality of screens can be viewed simultaneously according to the selection of the video monitor, and the plurality of spot monitors 31-2 to 3N-2 ) Is displayed on the entire screen is the same as the prior art of FIG.

However, the remote control unit 100 selects a first control signal for selecting a digital video recorder connected to a predetermined camera according to an input applied to obtain image data required by the image monitor on the display unit 30 from the predetermined camera. In addition to CON1, a predetermined camera in the monitoring apparatus 10 is selected, and a second control signal CON2 for controlling the movement of the camera and the enlargement and reduction of the image is output.

The local monitoring terminal 20 selects the monitoring signal output from the camera in the monitoring apparatus 10 selected by the second control signal CON2 of the remote control unit 100 by the first control signal CON1. After receiving the data transmission command from the remote control unit 100 after converting into digital data and storing the digital monitoring data, the remote control unit 100 outputs the data to the display unit 30 according to the automatic setting.

Referring to Figure 4 describes the operation of a remote video surveillance system using a digital video recorder according to the first embodiment of the present invention.

For example, suppose that the monitor wants to obtain image data acquired by the seventeenth camera 10-17 through the main monitor. 64 cameras 10-1 to 10-64 in the monitoring device 10 capture and output video signals in all surveillance zones, and the local monitoring terminal 20 receives the monitoring data to receive four digital video recorders. Points 20-1 to 20-4 are converted to digital data and then output in the same manner as in the prior art of FIG.

The difference is that if the image monitor wants to obtain surveillance data from the seventeenth camera 10-17 through the main monitor in the display unit 30 within a predetermined surveillance space, the plurality of buttons 42 in the remote control unit 100 can be accessed. The first control signal CON1 for selecting the second digital video recorder DVR2 connected to the seventeenth camera 10-17 by applying a second input through the second input signal is output, as well as the plurality of buttons 42. By operating the stick 43, a first input is applied to select the seventeenth camera 10-17, and outputs a second control signal CON2 for controlling the movement of the camera and the enlargement and reduction of the image. Is applied to (20).

In this case, when the seventeenth camera 10-17 is selected through the remote control unit 100, the main monitor 32-1 of the display unit 30 is controlled according to the automatic setting of the second digital video recorder DVR2. 17 Image data captured by the camera 10-17 is outputted. There are two methods as follows.

As a first method, the remote controller 100 controls all connection structures in the remote video surveillance system, that is, a plurality of cameras 10-1 to 10-16N in the monitoring apparatus 10, and a plurality of in the local monitoring terminal 20. Digital video recorders 20-1 to 20 -N, between the plurality of main monitors 31-1 to 3N-1 and the plurality of spot monitors 31-2 to 3N-2 in the display unit 30. There is a method of setting a database which is pre-mapped in advance so that connection relations can be remembered.

In this method, when the remote controller 100 selects the seventeenth camera 10-17 in the above embodiment, the seventeenth camera 10-17 is transmitted to the second digital video recorder DVR2 to which the seventeenth camera 10-17 is connected. ) To give the command to output the image data photographed in the main monitor (32-1) of the display unit (30).

In the second method, the digital video recorder receives the first control signal from the remote control unit 100 even if the remote control unit 100 does not have a database mapped to store all connection structures in the remote video surveillance system. When the camera selected by the second control signal CON2 is a camera connected to itself when the CON1 is applied, the image data photographed by the selected camera is automatically output to the display unit 30.

In this method, when the remote controller 100 selects the second digital video recorder (DVR2) and the seventeenth camera (10-17) in the above embodiment, the second digital video recorder (DVR2) is the seventeenth camera (10-17). Recognizes the fact that he is connected to the user, and commands to output the image data photographed by the seventeenth camera 10-17 to the main monitor 32-1 of the display unit 30 automatically.

As described above, the remote video surveillance system using the digital video recorder according to the first embodiment of the present invention is connected to a predetermined camera in the remote control unit 100 in order to view an image captured by a camera in the surveillance area that the monitor wants to monitor. In addition to selecting a specific digital video recorder, a predetermined camera in the surveillance apparatus 10 is selected, and the movement of the camera and the enlargement and reduction of the image are controlled.

Therefore, even when the monitor needs to control the camera while monitoring the image data being photographed in the predetermined surveillance space, the monitor does not go through the digital video recorder, but the joystick and the plurality of buttons 42 in the remote controller 100 do not go through. The simple operation of (43) makes it easy to directly select a predetermined camera to control the movement and enlargement and reduction of the camera, thereby speeding up the control speed of the camera in a general CCTV control system requiring continuous control of a plurality of cameras. It becomes possible.

Next, Figure 5 shows a remote video surveillance system using a multiplexer according to a second embodiment of the present invention, the monitoring device 10, the local monitoring terminal 20, the multiplexer 200, the remote control unit 400, The display unit 60 is provided. The monitoring device 10 is composed of a plurality of cameras 10-1 to 10-16N, the local monitoring terminal 20 is composed of a plurality of digital video recorders 20-1 to 20 -N, and a display. The unit 60 is composed of a plurality of monitors 61 to 6N.

The components and connections of most blocks are the same as the block diagram of the remote video surveillance system using the conventional video matrix switcher of FIG.

The difference is that the low cost multiplexer 200 is employed instead of using an expensive video matrix switcher as a means of mapping the plurality of cameras 10-1 to 10-16N and the plurality of monitors 61 to 6N. The output signals of the plurality of digital video recorders 20-1 to 20 -N are applied to the multiplexer 200, respectively, instead of being applied to the output signals of 16 cameras, respectively. Spot out is applied through the port.

Here, the spot output port is an image data input / output in the digital video recorder which selects a predetermined camera and outputs the corresponding surveillance data with respect to the surveillance data of the cameras authorized by the plurality of digital video recorders 20-1 through 20-N. In addition to the ports, it refers to a separate output port, and the remote control unit 400 recognizes this and selects a predetermined camera and a predetermined monitor in the same way as a conventional video matrix switcher, and then delivers the surveillance data required by the video monitor. do.

In addition, the plurality of cameras 10-1 to 10-16N are connected to the remote controller 400 instead of the RS485 serial communication protocol to the multiplexer 200, and control signals CON1 of the remote controller 400. , CON2, and CON3 are applied to the monitoring device 10 and the local monitoring terminal 20 instead of being applied only to the multiplexer 200.

The function of each block of the remote video surveillance system using the multiplexer according to the second embodiment of the present invention will be described with reference to FIG. 5.

The monitoring device 10 and the display unit 60 are the same as the functions of the respective blocks of the remote video surveillance system using the conventional video matrix switcher of FIG. 2, but the monitoring device 10 is connected to the multiplexer 200 by RS485 serial communication protocol. The difference is that the first control signal CON1 of the remote controller 400 that controls the movement of the camera is applied by the second input on the remote controller 400 of the video monitor instead of being connected and communicating.

The local monitoring terminal 20 outputs a monitoring signal output from a camera in the monitoring apparatus 10 selected by the first control signal CON1 of the remote control unit 400 to the plurality of digital video recorders 20-1 to 20 -N. The digital surveillance data is stored through the digital video recorder selected by the second control signal CON2 of the remote controller 400 and converted into digital data.

The remote control unit 400 controls the movement of a predetermined camera in the monitoring apparatus 10 and the enlargement and reduction of an image in order to obtain surveillance data required by the image monitor from a predetermined camera, and a local monitoring terminal. Outputs a second control signal CON2 for selecting a predetermined digital video recorder in 20, and a third control signal CON3 for selecting a predetermined camera in the monitoring apparatus 10 and a predetermined monitor in the display 60. .

The multiplexer 200 receives a plurality of digital video signals converted by the local monitoring terminal 20 through a spot output port of the selected digital video recorder and receives a third control signal CON3 of the remote controller 400. After selecting a predetermined camera in the monitoring device 10 and a predetermined monitor in the display unit 60, the digital image signal required by the monitor is transmitted.

Referring to Figure 5 describes the operation of the remote video surveillance system using a multiplexer according to the second embodiment of the present invention.

Similarly, for the sake of understanding the operation process, 64 cameras 10-1 to 10-64 are installed in the monitoring device 10 of the surveillance zone, and these cameras 10-1 to 10-64 are 16 Each group is connected to each of the four digital video recorders 20-1 to 20-4, and the four digital video recorders 20-1 to 20-4 are each connected via four spot output ports. It is connected to the X 4 multiplexer 200 and sets the output of the 16 X 4 multiplexer 200 to be applied to the four monitors 61 to 64, respectively.

For example, suppose that the monitor wants to obtain the image data acquired by the seventeenth camera 10-17 through the third monitor 63. The monitor first applies a third input through manipulation of corresponding buttons to output a control signal CON3 for selecting the seventeenth camera 10-17 and the third monitor 63 from the remote controller 400.

Accordingly, the remote controller 400 outputs the control signal CON2 by a database of all connection structures in the remote video surveillance system set therein, which is connected to the seventeenth camera 10-17. The second digital video recorder DV2 is automatically selected.

The second digital video recorder (DVR2), which is primarily connected to the seventeenth cameras (10-17), is selected by the second control signal (CON2) applied through the remote control unit 400, and the second digital video recorder (DVR2) is selected. Is controlled to output surveillance data acquired by the seventeenth camera 10-17 through a predetermined spot output port. Thereafter, the 16 × 4 multiplexer 200 secondarily selects the third monitor 63 selected from the four monitors 61 to 64 by the third control signal CON3 applied through the remote control unit 400. Finally, control is performed to output the monitoring data acquired by the seventeenth camera 10-17 to the third monitor 63.

If the monitor monitors the image data being captured by the seventeenth camera 10-17 through the third monitor 63 in a predetermined surveillance space, a suspicious image is captured, and the top and bottom left, right, and right sides of the seventeenth camera 10-17 are captured. Or to zoom in or out of the captured image, the first control signal CON1 is output through the second input by the operation of the inner joystick 43 on the remote control unit 400 to display the 17th camera ( By controlling 10-17), intended image data can be obtained.

As described above, in order to allow the remote video surveillance system to perform the above two-step operation internally by operating the plurality of buttons 42 and the joy stick 43 of the monitor's remote control unit 400, All connection structures within the remote video surveillance system, that is, a plurality of cameras 10-1 to 10-16N in the monitoring apparatus 10, and a plurality of digital video recorders 20-1 to 20 in the local monitoring terminal 20. -N), a database mapped in advance must be set in order to store a connection relationship between the plurality of monitors 61 to 6N in the display unit 60.

This database contains the mapping of the number of digital video recorders 20-1 to 20-N and the number of cameras 10-1 to 10-16N connected to the input port, input and output of the multiplexer 200. Mapping of the port numbers to the output port numbers of the plurality of digital video recorders 20-1 to 20-N and the plurality of monitors 61 to 6N that are connected to each other, the plurality of monitors currently being displayed The current display state, which is mapping data of the (61 to 6N) number, the plurality of cameras 10-1 to 10-16N number, and the output port numbers of the plurality of digital video recorders 20-1 to 20-N, Included.

Accordingly, the remote video surveillance system using the multiplexer of the present invention receives the image data in all the surveillance zones acquired through the 64 cameras 10-1 to 10-64 in the conventional video matrix switcher and receives the remote control unit 400. The remote control unit 400 first outputs the monitoring data acquired from the seventeenth camera 10-17 to the third monitor 63 by controlling the internal operation of the video matrix switcher itself. There is a difference between the internal operation of the second digital video recorder (DVR2) connected to the second step of giving a command to the 16 X 4 multiplexer 200 again.

Next, FIG. 6 is a flowchart illustrating a remote video surveillance method using a multiplexer according to a second embodiment of the present invention.

First, the remote control unit 400 obtains surveillance data captured by a predetermined camera in the monitoring apparatus 10 disposed in an area to be monitored by the image monitor through a predetermined monitor in the display unit 60 installed in the surveillance space. The predetermined camera number and the predetermined monitor number are inputted by manipulation of the plurality of buttons 42 (S100).

The image monitor determines whether the surveillance data captured by the predetermined camera is currently output to the specific monitor (S200), and if the output is output, the camera number and the corresponding monitor number on the liquid crystal display 41 of the remote controller 400. The display is terminated after displaying (S250).

If it is not currently output to a specific monitor, it is determined whether a certain camera is a camera connected to a digital video recorder (S300).

The remote controller 400 determines whether there is a corresponding digital video recorder in the current display state (S400). Transmit the first command to output (S410).

If it is determined that there is no corresponding digital video recorder in the current display state, the remote controller 400 transmits a second command to output surveillance data captured by the corresponding camera to the first spot output port of the corresponding digital video recorder (S420). )

The digital video recorder receives the first or second command of the remote controller 400 to output surveillance data captured by the camera to the fastest port number or the first spot output port among the unused spot output ports. (S430, S440)

The remote controller 400 transmits a third command to receive the surveillance data captured by the camera from the predetermined input port of the multiplexer 200 connected to the spot output port of the corresponding digital video recorder and output it to the monitor. (S500)

The multiplexer 200 receives the third command of the remote controller 400 to output surveillance data captured through the camera input through the input port to the corresponding monitor, and the monitor displays the surveillance data on the screen to the video monitor. (S600)

After modifying the corresponding monitor number in the current display state, the operation ends. (S700)

Referring to Figure 6 describes the operation of the remote video surveillance method using a multiplexer according to the present invention.

First, for convenience of understanding the operation process, 64 cameras 10-1 to 10-64 are installed in the monitoring device 10 of the surveillance zone, and the cameras 10-1 to 10-64 are 16 Each group is connected to each of the four digital video recorders 20-1 to 20-4, and the four digital video recorders 20-1 to 20-4 are each connected via four spot output ports. It is connected to the X 4 multiplexer 200 and sets the output of the 16 X 4 multiplexer 200 to be applied to the four monitors 61 to 64, respectively.

For example, suppose that the monitor wants to obtain the image data acquired by the seventeenth camera 10-17 through the third monitor 63. The monitor first obtains the monitoring data captured by the seventeenth camera 10-17 in the monitoring device 10 disposed in the area to be monitored through the third monitor 63 in the display unit 60 installed in the monitoring space. The remote controller 400 inputs the seventeenth camera 10-17 number and the third monitor 63 number by manipulation of the plurality of buttons 42 (S100).

The video monitor determines whether the surveillance data photographed through the seventeenth camera 10-17 is currently being output to the third monitor 63, and if the image monitor is outputting (S200), the current monitoring state does not require a separate switching operation. Since only the 17th camera 10-17 number and the third monitor 63 number are displayed on the liquid crystal display 41 of the remote control unit 400, the operation ends.

If it is not currently output to the third monitor 63, it is necessary to switch the currently displayed monitor to the third monitor 63, so that the remote control unit 400 is connected to any digital video recorder. It is determined whether the camera is connected through a logic structure already mapped in the remote control unit 400 (S300).

The remote controller 400 determines whether there is a second digital video recorder (DVR2) that is the corresponding digital video recorder in the current display state, and when it is determined that the current is in the display state (S400), the spot output port of the second digital video recorder (DVR2). Since some of them are in use, the first command transmits the first command to output the surveillance data photographed through the seventeenth camera 10-17 to the fastest port among the unused spot output ports.

If it is determined that there is no second digital video recorder (DVR2) in the current display state, since all of the spot output ports of the second digital video recorder (DVR2) are not in use, the remote control unit 400 may control the second digital video recorder (DVR2). In operation S420, a second command to output surveillance data photographed through the seventeenth camera 10-17 is transmitted to the first spot output port.

The second digital video recorder (DVR2) receives the first or second command of the remote control unit 400 and is the fastest or first spot output port among the unused spot output ports. Outputs the captured monitoring data through the (S430, S440).

The remote control unit 400 monitors the data captured by the seventeenth camera 10-17 at the input port of the multiplexer 200, which is connected to the multiplexer 200 to a predetermined spot output port of the second digital video recorder DVR2. Received to transmit a third command to output to the third monitor (63) through the output port of the multiplexer (200) (S500).

The multiplexer 200 receives the third command of the remote control unit 400 to output surveillance data captured through the seventeenth camera 10-17 input to the input port to the third monitor 63, and displays the third monitor ( 63) displays the monitoring data on the screen and shows it to the video monitor (S600).

The operation is terminated after the monitor number of the current display state is corrected to the third monitor 63 number (S700).

As described above, the remote video surveillance system and the digital video signal method using the multiplexer according to the second embodiment of the present invention map a plurality of cameras 10-1 to 10-16N and a plurality of monitors 61 to 6N. By employing a low cost multiplexer instead of a conventional expensive video matrix switcher as a means, it is possible to reduce the cost required for general consumers such as banks and apartments to install small and medium security surveillance equipment by preventing a redundant investment in the same function.

Further, instead of the digital video recorders being connected to the video matrix switcher by the conventional cameras, respectively, the digital video recorders are connected through predetermined spot output ports in the digital video recorder, and the remote controller 400 as well as the multiplexer 200 and the monitoring device 10 are connected. By providing a comprehensive surveillance data transmission / reception protocol that also controls a plurality of cameras 10-1 to 10-16N in the local network and a plurality of digital video recorders 20-1 to 20-N in the local surveillance terminal 20, Even large-scale CCTV control systems such as government offices or large research institutes that require thorough security in one surveillance area will enable the observer to perform security surveillance tasks in an efficient and easy manner.

For the convenience of understanding the above operation process, 64 cameras in the surveillance apparatus of the surveillance zone are installed, these cameras are connected to each of the four digital video recorders, and each of the four digital video recorders has four spot output ports. Is connected to a 16 X 4 multiplexer and the output of the 16 X 4 multiplexer is applied to each of the four monitors, but in a large CCTV control system more than 128 cameras, more than 8 digital video recorders, more than 8 spots It is natural that the remote video surveillance system of the present invention can be configured with output ports, two or more 16 × 4 multiplexers, and eight or more monitors.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the invention as set forth in the claims below. It will be appreciated.

The remote video surveillance system and the remote video surveillance method of the present invention can quickly control the camera by directly selecting and controlling the surveillance camera, and employ a low-cost multiplexer to make redundant investment in the same function. By reducing the cost required to install small and medium sized security surveillance equipment, and by providing a comprehensive surveillance data transmission and reception protocol, the monitor can perform the security surveillance task in an efficient and easy way even in a large CCTV control system.

Claims (28)

delete delete delete delete delete delete delete delete A monitoring device including a plurality of monitoring units composed of a plurality of cameras, photographing an image in the surveillance zone to output an image surveillance signal, and the plurality of cameras being selected in response to a first control signal to control movement; And a plurality of digital video recorders connected corresponding to the plurality of monitoring units, and each of the plurality of digital video recorders receives the video surveillance signals transmitted from the corresponding plurality of monitoring units and converts the video surveillance signals into digital image data. A local surveillance terminal for storing and outputting the digital image data of a specific camera through predetermined output ports, the digital camera data being stored in at least one or more digital video recorders selected in response to a second control signal; A multiplexer receiving the multiple digital image data and multiplexing the plurality of digital image data and delivering the multiple image data to at least one selected monitor in response to a third control signal;  A display unit having a plurality of monitors and connected to the multiplexer through a communication network to receive the digital image data and convert the digital image data into an analog image signal; Outputting the second control signal in response to a first input designating the specific camera among the plurality of cameras, and generating the second control signal in response to a second input designating a camera for controlling movement among the plurality of cameras. A remote control unit for outputting a first control signal and outputting the third control signal in response to a third input for designating a specific monitor among the plurality of monitors, The predetermined output ports If it is determined that the corresponding digital video recorder is operating in the current display state, it is the fastest port among a plurality of spot output ports not used by the corresponding digital video recorder, and it is determined that the corresponding digital video recorder is inoperative in the present display state. Is the first spot output port of the corresponding digital video recorder, The plurality of spot output ports And output ports in the digital video recorder for outputting video surveillance data captured by the specific camera with respect to the video surveillance data received from the plurality of digital video recorders. The method of claim 9, The first control signal is A signal for controlling the movement of the specific camera and the enlargement and reduction of the image, The second control signal is A signal for selecting a digital video recorder connected to the specific camera, The third control signal is And a signal for selecting the specific camera and the specific monitor. The method of claim 9, The communication network A remote video surveillance system, which can be a local area network, a broadband network, a public telephone network, an asymmetric digital subscriber line, an integrated network, or the like. The method of claim 9, The local monitoring terminal The video surveillance signal output from the camera in the designated surveillance device through the at least one digital video recorder selected in response to the second control signal is applied by the at least one digital video recorder and converted into digital data. Remote video surveillance system. The method of claim 9, The remote control A plurality of buttons for selecting and inputting the specific camera number and the specific monitor number to obtain surveillance data captured by the specific camera through the specific monitor; A liquid crystal display device displaying the specific camera number and the specific monitor number currently being displayed on the screen and displaying the specific camera number to the video monitor; And a joystick for remotely controlling the movement of the specific camera up, down, left and right and the enlargement or reduction of the captured image by the first control signal while monitoring the image data being captured by the specific camera. Remote video surveillance system. The method of claim 9, The remote control And a database in which connection relations between a plurality of cameras in the surveillance apparatus, a plurality of digital video recorders in the local surveillance terminal, and a plurality of monitors in the display unit are mapped in advance. The method of claim 9, The multiplexer And a low cost multiplexer for selecting the specific camera and the specific monitor by the third control signal. The method of claim 9, The remote control And a comprehensive surveillance data transmission / reception protocol for simultaneously controlling the multiplexer, a plurality of cameras in the surveillance apparatus, and a plurality of digital video recorders in the local surveillance terminal. delete delete A method of monitoring a remote video surveillance system comprising a plurality of cameras, a plurality of digital video recorders, a multiplexer, a plurality of monitors, and a remote control unit, The remote controller may input the camera number and the monitor number in the remote controller to obtain image surveillance data captured by at least one camera among the plurality of cameras through at least one monitor among the plurality of monitors. Outputting a second control signal for controlling selection of at least one digital video recorder connected to one or more cameras and a third control signal for controlling selection of the at least one monitor; A current display state determination step of determining whether the at least one digital video recorder is selected in response to the second control signal and the remote control determines whether the at least one digital video recorder is operating in a current display state; A first data output step of the digital video recorder receiving the video surveillance data and outputting first data to a predetermined output port; And a second data output step of the multiplexer receiving the first data and outputting the first data to the at least one monitor in response to a third control signal of the remote controller. The first data output step In the current display state determination step, if it is determined that the digital video recorder is operating in the current display state, the first command to output the surveillance data to a first output port is transmitted, and the digital video recorder is transmitted to the current display state. Transmitting a second command to the remote control unit to output the monitoring data to a second output port if it is determined that the device is in an inoperative state; The digital video recorder receives the first command of the remote controller to output the video surveillance data to the first output port, and receives the second command to output the video surveillance data to the second output port. With steps, The second data output step Transmitting, by the remote controller, a third command to receive the video surveillance data from a predetermined input port of the multiplexer connected to the first or second output port and output the image monitoring data to the specific monitor; The multiplexer receives the third command and outputs the video surveillance data applied through the predetermined input port to the specific monitor, and the specific monitor displays the video surveillance data on a screen, and then, during the current display state. After modifying the corresponding monitor number, the step of ending the job, The first output port is In the current display state determination step, if it is determined that the corresponding digital video recorder is operating in the current display state, some of the spot output ports of the corresponding digital video recorder are in use, and thus the spot output not used by the corresponding digital video recorder is used. Is the fastest of the ports, The second output port is If it is determined in the current display state that the corresponding digital video recorder is inactive in the current display state, all of the spot output ports of the corresponding digital video recorder are not in use, and thus the first spot of the corresponding digital video recorder. Remote video monitoring method characterized in that the output port. The method of claim 19, The remote video surveillance method An output monitor determining step of determining, by the video monitor, whether the video monitoring data is currently output to the specific monitor; And displaying the specific camera number and the specific monitor number on the remote controller if the image monitoring data is being output to the specific monitor in the output monitor determining step, and ending the operation. Surveillance Method. The method of claim 19, The current display state determination step In the output monitor determination step, when the video surveillance data is not being output to the specific monitor, the current display state is determined, and thereafter, the remote controller determines whether the digital video recorder is operating at the current display state. Remote video surveillance method characterized in that. delete delete The method of claim 19, The current display state determination step In determining whether the monitor currently displayed needs to be switched to the specific monitor, the remote controller determines whether the camera is connected to which digital video recorder through a logic structure already mapped in the remote controller. Remote video monitoring method. delete delete The method of claim 24, The remote control A plurality of buttons for selecting and inputting the specific camera number and the specific monitor number to obtain surveillance data captured by the specific camera through the specific monitor; A liquid crystal display device displaying the specific camera number and the specific monitor number currently being displayed on the screen and displaying the specific camera number to the video monitor; And a joystick for remotely controlling the movement of the specific camera up and down, left and right and the enlargement or reduction of the captured image by the second control signal while monitoring the image data being captured by the specific camera. Remote video surveillance method. The method of claim 27, The remote control And a database in which a connection relationship between the plurality of cameras, the plurality of digital video recorders, and the plurality of monitors is mapped is preset.

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