KR100259548B1 - Digital cctv system - Google Patents

Abstract

PURPOSE: A system for monitoring digital multiple images is to output multiple moving images picked up by a plurality of cameras through a single monitor at the same time, thereby increasing the reliability of the system. CONSTITUTION: The first instruction input portion(17) inputs an instruction. The first image processing portion converts each video signal output from a plurality of cameras into a digital signal according to a desired control signal, and then synthesizes the digital signal to output a VGA(video graphic array) signal. The first image output portion processes the VGA signal output from the first image processing portion to output an image. The first signal transforming portion(19) transforms the VGA signal output from first image processing portion into the original video signal. The first MPEG transforming portion(20) encode and compresses the video signal output from the first signal transforming portion. The first image storing portion(18) stores video data. The first CPU(central processing unit) portion(15) controls the above entire portions. The first program memory(16) stores an operating program of the first CPU portion.

Description

Digital multi video surveillance system

The present invention relates to a digital multi-image monitoring system, and in particular, it is possible to simultaneously output multiple moving images captured by a plurality of cameras through a single monitor to increase the reliability of the surveillance and to remotely monitor the multiple images. The present invention relates to a digital multi-image surveillance system that enables simultaneous transmission.

Currently used video surveillance systems include, for example, a one-to-one surveillance system in which one monitor is combined one-to-one in one surveillance camera, and a one-to-many surveillance system in which a plurality of surveillance cameras are combined in one monitor in one monitor. .

The one-to-one surveillance system has a representative disadvantage in that it is costly according to the system implementation, and the one-to-many surveillance system outputs an image captured by another surveillance camera while the image captured by the surveillance camera is output through the monitor. There is a serious problem with the reliability of monitoring because this is not possible.

That is, the conventional multi-image surveillance system (closed circuit TV; CCTV) cannot use a variety of screen configurations because a general television receiver monitor is used without using a personal computer. Several video recorders (e.g., video cassette recorders) were provided for recording.

In addition, since the surveillance system using a personal computer monitors images by sequential output method rather than multiple moving images when monitoring multiple places, the reliability of the monitoring system is not reliable when it is not own time.

In the related art, manual operation control using a separate camera adjusting device is performed in controlling a camera. Particularly, in the related art, when transmitting surveillance images of various places to a remote site, a video transmitting and receiving device was required for each camera.

As described above, the conventional video surveillance system configures a recorder so as to correspond to an individual surveillance camera, or sequentially monitors images captured by each camera, and there is a problem of manually adjusting the camera.

Accordingly, the present invention has been made in view of the above circumstances, and it is possible to simultaneously output multiple moving images captured by a plurality of cameras through a single monitor, thereby increasing the reliability of surveillance. The purpose is to provide.

In addition, an object of the present invention is to provide a digital multi-image monitoring system that enables the simultaneous transmission of multiple images to a remote location, so that it can be easily monitored even at a remote location.

1 is a block diagram showing the configuration of a digital multi-image monitoring system according to an embodiment of the present invention.

2 is a block diagram showing the configuration of a digital multi-image monitoring system according to another embodiment of the present invention.

* Brief description of the main parts of the drawing

1: remote monitoring system 2: central panel monitoring system

10: camera 11: camera drive receiver

12, 34: VGA (Video Graphic Array) board 13, 35: Overlay board

14 camera driving transmitter 15 CPU

16, 38: program memory 17, 39: command input unit

18, 40: video storage unit 19: signal converter

20, 32: MPEG Converter 22: Printer

23: VCR 24, 36: monitor

30, 31: trunk matching portion 37: the central half CPU

According to an aspect of the present invention, there is provided a digital multiplex video surveillance system comprising: an image surveillance system including an imaging device including a plurality of cameras respectively photographing a subject and outputting a corresponding video signal; A first command input device for inputting a command, a first image processing device for synthesizing each video signal output from a plurality of cameras of the imaging device according to a predetermined control signal, and outputting the VGA signal; A first image output apparatus for processing a VGA signal output from an image processing apparatus and outputting an image, and a first signal conversion apparatus converting the VGA signal output from the first image processing apparatus into an original image signal, the first image converting apparatus A first MPEG converter for encoding and compressing a video signal output from a signal converter, a first video storage device for storing video data, and executing an initial boot operation when the system is started, and then inputting the first command input device. A predetermined number of screens for each image signal output from the imaging apparatus by controlling the first VGA board and the first image processing apparatus based on an input signal of After the split processing, the VGA signal is output to the first image output device, and the image data processed by the first MPEG converter is stored and controlled in the first image storage device, and then the input of the first command input device is performed. A first CPU for controlling the first image processing apparatus to output image data stored in the first image storage apparatus to one or more screens through the first image output apparatus based on a command; And a first program memory in which an operation program is stored.

The present invention also provides a first public network interface unit for interfacing the first MPEG converter with a public network, a second MPEG converter for decoding the image data input through the public network and restoring and outputting the original video signal. A second public network interface unit for interfacing the converter and the public network, a second command input device for inputting a command, and processing a video signal output from the second MPEG converter according to a predetermined control signal to output the VGA signal A second image processing apparatus for processing a VGA signal output from the second image processing apparatus, a second image output apparatus for outputting an image, and an input signal from the second MPEG conversion apparatus based on an input signal of the second command input apparatus; A second CPU for controlling the second image processing apparatus to output an image signal through a second image output apparatus; And a second program memory in which an operation program of 2 CPUs is stored.

Next, an embodiment according to the present invention will be described.

1 is a block diagram showing the configuration of a digital multiple image surveillance system according to an embodiment of the present invention.

In the drawings, reference numerals 10 ₁ to 10 _N denote cameras for capturing a subject to output a predetermined video signal, and reference numeral 11 denotes a camera based on a predetermined control signal transmitted from the CPU 15 to be described later. Camera-driven receivers for performing control such as up, down, left, right, lighting, focus, zoom in, zoom out, camera on / off, etc. with respect to 10 ₁ to 10 _N. to be. In addition, the camera drive receiving apparatus is composed of a plurality of sensors, such as infrared, heat, proximity sensor, for example, various sensing signals output from the sensor unit S to sense the surrounding environment of the camera (10 ₁ ~ 10 _N ) Is collected and transmitted to the camera driving transmitter 14.

Further, reference numeral 12 denotes a graphic graphics array (VGA) board for controlling graphics, and 13 ₁ to 13 _N are arbitrary cameras 10 ₁ to 10 _N coupled correspondingly according to the control signal of the CPU 15 to be described later. ) And a signal input from the VGA board 12 or an overlay board adjacent to each other into digital signals, and then synthesize the two converted signals using a color code technique. It is an overlay board for converting and outputting an analog signal.

Here, the VGA board 12 and the overlay boards 13 _{1 to} 13 _N are coupled to a board adjacent to each other with a predetermined function cable A and a VGA cable B, and the video signals are transmitted through the cables A and B. FIG. Is to be input and output. That is, the RGB output signal of the VGA board 12 is the input signal from the overlay board (13 _N) which are adjacent above, the overlay board (13 _N), this output signal is to overlay board (13 in the adjacent of the _{N- 1} ) becomes the input signal. Similarly, the overlay board 13 ₁ of the last stage synthesizes the video signal inputted through the two cables A and B of the adjacent overlay board 13 ₂ and the video signal captured and input by the camera 10 ₁ . After that, the predetermined VGA signal is output to the monitor 24.

On the other hand, reference numeral 14 denotes a predetermined camera control signal output from the CPU 15 to be described later to the camera drive receiving device 11 or receives a sensing signal output from the camera drive receiving device 11 A camera drive transmitter for outputting to the CPU 15, 15 is a CPU for performing the overall control of the digital multi-image monitoring system according to the present invention.

Here, the CPU 15, the VGA board 12, and the overlay boards 13 _{1 to} 13 _N may transmit and receive control data through an Industry Standard Architecture (ISA) bus.

In addition, reference numeral 16 is a program memory for storing the operating program of the CPU 15, 17 is a command input unit, for example, a mouse, keyboard, etc., the operator can input a command for the monitoring system, 18 is It is an image storage unit for storing image data compressed by the MPEG converter 20 to be described and input through a predetermined printer cable.

In this case, when the operator selects and selects a predetermined split screen by using the command input unit 17, the CPU 15 controls the overlay boards 13 _{1 to} 13 _N based on the screen split signal to determine the final stage. The output form of the VGA signal output from the overlay board 13 ₁ is controlled.

In addition, reference numeral 19 is a signal converter for converting a VGA signal output from the overlay board 13 ₁ into a video signal of NTSC (National Television System Commitee) method (hereinafter, abbreviated as video signal). Is an MPEG converter for converting the video signal output from the signal converter 19 into a digital signal according to the control signal of the CPU 15 and then compressing the video signal, and 23 is a video signal output from the signal converter 19. A video cassette recorder (VCR) 24 for recording is a monitor as an image output device for receiving a VGA signal output from the overlay board 13 ₁ at the last stage and outputting an image.

Next, the operation of the device having the above configuration will be described.

First, when an operator applies a system power by operating a mechanical switch or a remote control device installed in the main body, the CPU 15 performs a booting operation based on a booting program stored in the program memory 16. . That is, the CPU 15 first executes a system check function for checking an abnormal state of each device, then executes an initialization process, and outputs a predetermined initial screen to the monitor 24 based on the monitoring system program. do.

Subsequently, when the user issues a predetermined execution command to turn on the power of the camera through the command input unit 17 in the initial state, the CPU 15 transmits the camera drive through the RS232C serial line. A predetermined camera driving signal is output to 14. Subsequently, the camera drive transmitter 14 outputs an input camera drive signal to the camera drive receiver 11 through an RS422 line.

Subsequently, the camera driving receiver 11 receiving the camera driving signal applies an operating power to the camera 11 so as to correspond to the camera driving signal, and performs initial control of up, down, left, right, lighting, and focus. . Then, each of the cameras 10 ₁ to 10 _{N photographs} the subject and outputs the video signal to the corresponding overlay boards 13 _{1 to} 13 _N.

Here, the operator includes a plurality of cameras (10 ₁ ~10 _N) may be any of the cameras (10 ₁ ~10 _N) for operating in a selected camera (10 ~ ₁ by the operator through the instruction input unit 17 When 10 _N ) is selectively designated, the CPU 15 outputs a predetermined drive command signal for operating any of the designated cameras 10 ₁ to 10 _N to the cameras 10 ₁ to 10 _N.

Subsequently, the VGA board 12 outputs a predetermined RGB signal to an adjacent overlay board 13 _N according to the control signal of the CPU 15. The overlay board 13 _N receiving the RGB signal converts the video signal input from the camera 10 _N corresponding to the RGB signal into a digital signal, and then synthesizes the color signal using a color code technique to form another adjacent overlay board 13 _{N. -1} ). Then, each overlay board (13 ₁ ~13 _N) is then synthesized by the signal input from the overlay board (13 ₁ ~13 _N) adjacent the input video signal from the corresponding camera (10 ₁ ~10 _N) is Will print. The overlay board 13 _{1 at the} last stage outputs a VGA signal to the monitor 24.

At this time, when the operator selects any one of the divided screens divided into 1, 4, and 8 screens after driving control of the cameras 10 ₁ to 10 _N , the CPU 15 displays a corresponding divided screen. Each overlay board 13 _{1 to} 13 _N is controlled to be output. That is, when the user selects one screen output function and designates any one camera 10 ₁ to 10 _N , the CPU 15 monitors the image signal captured by the camera 10 ₁ to 10 _N. Each of the overlay boards 13 _{1 to} 13 _N is controlled to be output through the entirety. At this time, the video signal captured and input by the other cameras 10 ₁ to 10 _N is displayed small in a specific portion of the monitor. Therefore, the monitoring image output to the monitor 24 is output in the form of the divided screen selected by the operator.

When the operator selects the 4 or 8 screen split output function, the CPU 15 outputs the video signal captured by the designated cameras 10 ₁ to 10 _N and suppresses the output of the unspecified video signal. The overlay boards 13 _{1 to} 13 _N are controlled.

Here, the split screen shown in the monitor 24 of FIG. 1 illustrates the state of the screen split screen when the operator selects the four-screen split output function, and the operator selects and selects an arbitrary screen from the four divided screens. In this case, the CPU 15 controls to output the corresponding image signal through the entire monitor 24.

Meanwhile, the VGA signal output from the overlay board 13 ₁ is converted into a video signal through the signal converter 19 and output to the MPEG converter 20. The MPEG converter 20 compresses the input video signal and outputs the video signal to the CPU 15 through a predetermined printer line or outputs arbitrary image data according to the control signal of the CPU 15. Output control. At this time, the MPEG converter 20 outputs the image data to the printer 22 in units of frames, thereby enabling the unit of frame output of the image screen.

Then, the CPU (15) is sensible when the video data of the video data by the MPEG converter 20 as described above are inputted, each of the cameras (10 ₁ ~10 _N) in each of the image pickup camera (10 ₁ ~10 _N) Each image is stored and controlled in a predetermined area. At this time, the CPU 15 simultaneously stores the current time.

Thereafter, when the operator inputs a predetermined image output signal, the CPU 15 reads out the image data stored in the image storage unit 18 and outputs the image data to the overlay board 13 ₁ . The board 13 ₁ performs image processing on the input data and outputs it to the monitor 24. At this time, CPU (15) it is controlled so as to control to the overlay board (13 ₁ ~13 _N) blocks the live image signal input from the camera (10 ₁ ~10 _N).

On the other hand, when the operator inputs a predetermined adjustment signal, for example, up, down, left, right, lighting, focus, etc. to any of the cameras 10 ₁ to 10 _N through the command input unit 17, the CPU 15 corresponds to the corresponding predetermined input. The control command signal of the transmission through the camera drive transmission device 14 to the camera drive receiving device (11 _{1 to} 11 _N ). Then, the camera drive receiving apparatuses 11 _{1 to} 11 _N operate and control the cameras 10 ₁ to 10 _N coupled on the basis of the control signal.

On the other hand, each of the sensor unit various sensing are detected on (S) so that information is collected by the corresponding camera driving the receiving device (11 ₁ ~11 _N) that is a bar, the camera driving the receiving device (11 ₁ ~11 _N) is collected The sensed information is output to the camera driving transmitter 14. Subsequently, the camera driving transmitter 14 outputs the received sensing information to the CPU 15, and the CPU 15 receiving the sensing information retrieves the sensing information and executes the control operation automatically. . For example, after retrieving the sensing information, a predetermined control signal for changing the focus of the cameras 10 ₁ to 10 _N is outputted or a predetermined situation message based on the sensing information is outputted on the monitor 24.

That is, according to the above embodiment, the installation space can be minimized by showing multiple screens simultaneously on one monitor, the image quality is excellent, and the monitoring efficiency can be improved. In addition, since the image storage and output uses the MPEG converter, it is easy to store, it is easy to find a specific screen, and the found image can be directly output through the printer.

On the other hand, Figure 2 is a block diagram showing the configuration of a digital multi-image monitoring system according to another embodiment of the present invention, in particular showing the configuration of the central panel to enable the monitoring and control of the remote monitoring system.

In the figure, reference numerals 30 and 31 are trunk matching units for interfacing the surveillance network and the central board with the public network, 32 is an MPEG converter for decoding the digital signal input from the trunk matching unit 31, and 33 is an image. It is a printer for outputting signals. Here, when the MPEG converter 20 in FIG. 1 is combined with the public network through the trunk matching unit 30, the MPEG converter 20 performs encoding for remote transmission of image data and outputs the same to the trunk matching unit 30 or this trunk matching. The function of decoding the data input through the unit 30 and outputting the output to the CPU 15 is additionally performed.

Also, reference numeral 34 denotes a VGA board for graphic control, and 35 denotes an overlay board for synthesizing the video signal output from the MPEG converter 32 and the VGA signal output from the VGA board 34 and outputting the synthesized signal to the monitor 36. to be. Here, the VGA board 34 and the overlay board 35 are connected via a function cable A and a VGA cable B to transmit and receive data.

In addition, reference numeral 37 is a central half processor that collectively controls the monitoring system of FIG. 1 from a remote location, 38 is a program memory in which an operation program of the central half processor 37 is stored, 39 is a command input unit such as a mouse or a keyboard, 40 denotes an image storage unit for storing a video signal decoded and input by the MPEG converter 32 according to a control signal of the central board CPU 37.

That is, in the present invention having the above configuration, when the operator applies the system power, the central board CPU 37 performs a boot operation based on the booting program stored in the program memory 38. A predetermined data transmission request is made to a remote monitoring system (FIG. 1) through a public network. At this time, the remote CPU 15 transmits system information such as operation state information of the cameras 10 ₁ to 10 _N and sensing information collected from each sensor unit S to the central board through the public network. Subsequently, the central board CPU 37 sets the operation mode based on this system information.

In this case, when the monitoring system of the central board is operated, the remote monitoring system merely serves as a signal path and cannot perform system control such as controlling the operation of the equipment. That is, when the central board monitoring system is operated, the CPU 37 can perform the operation control of the system as described in FIG. 1, and perform all system control on the central board 2.

In more detail, when the central board CPU 37 outputs, for example, predetermined control data for turning off an operation of an arbitrary camera 10 ₁ , the MPEG converter 32 receiving the inputted data converts the data at a high speed. And decode to be suitable for remote transmission. Subsequently, the decoded signal is outputted to the public network through the trunk matching unit 31, and the trunk matching unit 30 receiving the predetermined control data from the public network outputs it to the MPEG converter 20. Then, the MPEG converter 20 decodes the input data and outputs it to the CPU 15. The CPU 15 analyzes the data and then sends an appropriate control signal to the camera through the camera drive transmission device 14. do. Then, the camera drive receiving device 11 that receives the control signal stops driving the camera 10 ₁ . That is, when the central board is operated as described above, the remote system serves as a signal transmission path.

On the other hand, even if the system of the center board is operated, the video signal captured and output by the cameras 10 ₁ to 10 _N is processed by the overlay boards 13 _{1 to} 13 _N to maintain a predetermined output form through the monitor 24. In addition to being output as it is, the VGA signal output from the overlay board 13 ₁ at the final stage is signal-converted by the signal converter 19 and then input to the MPEG converter 20. Then, the MPEG converter 20 decodes the video signal and outputs it to the trunk matching unit 30.

Subsequently, the video signal output to the trunk matching unit 30 is input to the trunk matching unit 31 of the central board 2 through the public network. This video signal is decoded via the MPEG converter 32 and then output to the central board CPU 37. Then, the CPU 37 stores and controls the input video signal in the image storage unit 40.

That is, according to the above embodiment, the remote transmission of the image eliminates the need for as many cameras as the number of cameras, thereby reducing the cost.

In addition, this invention is not limited to the said Example, It can variously deform and implement within the range which does not deviate from the technical summary.

As described above, according to the present invention, by showing multiple screens simultaneously on one monitor, the installation space can be minimized, the image quality is excellent, and the monitoring efficiency can be improved. In addition, since the video storage and output uses the MPEG converter, it is easy to store, easy to find a specific screen, it is possible to realize a multi-image surveillance system that can directly output the found image through the printer.

Claims (5)

An image monitoring system comprising: an imaging device comprising a plurality of cameras, each photographing a subject and outputting a corresponding video signal; A first command input device for inputting a command, A first image processing apparatus for converting each image signal outputted from a plurality of cameras of the image pickup apparatus into digital signals according to a predetermined control signal, and then synthesizing and outputting the VGA signal; A first image output device processing a VGA signal output from the first image processing device and outputting an image; A first signal converting apparatus converting the VGA signal output from the first image processing apparatus into an original video signal; A first MPEG converter for encoding and compressing a video signal output from the first signal converter; A first image storage device for storing image data; When the system is started, after performing initial control of the initial booting operation, the first VGA input device and the first image processing device are controlled based on the input signal of the first command input device, and then the respective image signals are output from the imaging device. After splitting a predetermined number of screens, the VGA signal is outputted to the first image output device, and the image data processed by the first MPEG converter is stored and controlled in the first image storage device. A first CPU for controlling the first image processing apparatus to output image data stored in the first image storage apparatus to one or more screens through the first image output apparatus based on an input command of an input apparatus; And a first program memory in which an operation program of the first CPU is stored. The method of claim 1, Each of the cameras of the image pickup device is composed of a pair, and further comprises a plurality of sensors for detecting a state change around the camera and outputs the detection signal, And the first CPU automatically controls the operation of the camera based on the detection signal. The method of claim 1, A first public network interface unit for interfacing the first MPEG converter with a public network; A second MPEG converter for decoding and outputting image data input through a public network to the original image signal; A second public network interface unit for interfacing the second MPEG converter with a public network; A second command input device for inputting a command, A second image processing apparatus for processing a video signal output from the second MPEG converter according to a predetermined control signal and outputting the VGA signal; A second image output device processing a VGA signal output from the second image processing device and outputting an image; A second CPU for controlling the second image processing apparatus to output an image signal input from the second MPEG conversion apparatus through a second image output apparatus based on an input signal of the second command input apparatus; And a second program memory in which the operation program of the second CPU is stored. The method according to claim 1 or 3, When the operation control signal is input from the second CPU, the first CPU ignores the input signal of the first command input device and operates according to the control signal of the second CPU input through the public network. system. The method of claim 3, It further comprises a second video storage device for storing the video data, The second CPU stores and controls the image data processed by the second MPEG converter in the second image storage device, and then stores the image data stored in the second image storage device based on an input command of the second command input device. And controlling the second image processing apparatus to output through the second image output apparatus.

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