KR100439042B1 - Digital video recording system having a data file backup function in the distance - Google Patents

Abstract

The present invention converts and compresses continuous photographing information of a designated surveillance site into a digital value and stores it in a storage device of an on-site computer, and also backs up and manages the photographing information of the surveillance site in a remote computer located in a safe place at a remote location. The purpose of the present invention is to provide a DVR system with a remote backup function to secure the monitoring record data of the site by using a backup file of the remote site. .

The DVR system of the remote backup function of the present invention is installed at each monitoring site and records a plurality of camera blocks 30 for photographing the surrounding situation, and is connected to each of the plurality of camera blocks 30 to digitally capture the analog video signal. An on-site device having a plurality of on-site computers 10 for converting into signals and storing the compressed signals; A remote computer 70 connected to the field computer 10 through the communication networks 50 and 60 to receive a digital video compression signal, and perform management control such as function execution and selection of a plurality of field computers 10; And a remote device having an auxiliary storage device 90 for storing the digital video compression signal from the remote computer 70 as a backup file.

Description

Digital video recording system having a data file backup function in the distance}

The present invention relates to a digital video recorder, and more particularly, converts and compresses continuous shooting information or motion detection information of a designated surveillance area into digital values and stores them in a storage device of a field computer, and stores the shooting information or motion detection information in a remote location. By backing up to a remote computer located in a safe place, it is possible to carry out the monitoring data file of the on-site computer due to an accident such as a building collapse. It relates to a DV system having.

Recently, major national facilities, public institutions, financial institutions, general workplaces, houses, etc. have adopted and used various types of security and surveillance systems to protect from various disasters, accidents and crimes.

This type of security system detects accidents caused by sensors and detects unmanned machine guards, anti-theft, gas leaks, fires, etc., which are dispatched to the accident site by signals sent to the security service provider's situation room. In order to prepare for accidents that are likely to occur to the elderly, home security sends signals to wireless transmitters for emergency dispatch, and lighting control, announcements, error detection, and opening and closing of doors of financial institutions such as 365 corners of banks. Unmanned bank guards that are programmed and automatically operated, CCTV systems, commodity anti-theft systems to prevent theft and loss by attaching sensors to each product, and ID cards and passwords entered by systems installed in doors and parking lots, There is an access control system that controls the entrance through fingerprints and the like.

Among them, the CCTV system has the advantage of preventing or tracking accidents by monitoring and recording the behavior of the occupants by using a surveillance camera in a situation where it is not controlled by general security equipment such as a large workplace with a lot of public access. The reason is generally used a lot. Therefore, it is possible to conveniently secure the security and security of the place without the person going directly through the photographing of the security zone using the surveillance camera as described above.

In the conventional CCTV system, a television camera is installed in each surveillance zone, and a water receiver is installed in the central monitoring station, and a coaxial cable is used to display the images taken in each security zone with a receiver to monitor each security zone in the central monitoring station. It is made to be.

In addition, in the conventional CCTV system, the recording of the captured video signal was recorded on the video tape as an analog signal using the VTR.

However, the conventional method for storing video signals as described above is cumbersome because recording continuous shooting information is recorded on a video tape, which requires replacement with a new video tape, which incurs a separate cost for managing these video tapes. There is a problem.

In addition, in the conventional CCTV system, in order to search for shooting information of a specific date or time, the user needs to play and search the video tape directly, and there is also a problem of deterioration in image quality due to reuse of the video tape and long time recording. .

In addition, the conventional CCTV system has a problem that the alternative for securing the shooting information when the system is damaged due to the collapse of the building, such as the monitoring site is not considered.

An object of the present invention for solving the above problems is to convert and compress continuous shooting information or motion detection information of a designated surveillance area into digital values and store them in a storage device of a field computer, and also to store such shooting information or motion detection information at a remote location. By backing up to a remote computer located in a safe place, it is possible to carry out the monitoring data file of the on-site computer due to an accident such as a building collapse. It is to provide a DVB system having.

1 is a schematic block diagram of a DVD system having a remote backup function according to the present invention.

2 is a detailed block diagram of the field-side device and the remote-side device of the system of the present invention.

Figure 3 is a block diagram of a site-side device to which the means for adjusting the shooting angle of the monitoring site in the present invention is added.

Figure 4 is a flow chart showing the operation of the field-side device in the system of the present invention.

5 is a flowchart showing the operation of the remote device in the system of the present invention.

※ Explanation of symbols about main part of drawing ※

10: field computer 11: controller

12: Video switch 13: A / D converter

14: video compressor 15, 75: data storage device

16: motion detector 17, 74: communication interface device

20, 80: monitor 30: camera block

31 ~ 3n, 311 ~ 3n1: CCD camera 312 ~ 3n2: Pan tilt driver

40, 100: printer 50, 60: communication network

70: remote computer 71: center controller

71: management system 73: search system

90: auxiliary storage device

In order to achieve the above object, the present invention system includes a plurality of camera blocks installed at each surveillance site and photographing the surrounding situation, and the analog video signals photographed by being connected to each of the plurality of camera blocks are converted into digital signals and compressed and stored. A field side apparatus having a plurality of field computers; A remote computer connected to the field computer through a communication network to receive digital video compression signals, and to perform management and control of function execution and selection of a plurality of field computers, and a digital video compression signal from the remote computer as a backup file. It characterized in that it comprises a remote device having a secondary storage device for storing.

Hereinafter, with reference to the accompanying drawings will be described in more detail the present invention.

1 is a schematic block diagram of a DVD system having a remote backup function according to the present invention.

As shown in the drawing, the present invention system is a site-side device for processing and storing the shooting information at the monitoring site, and a remote-side device installed at a remote site connected to the site-side device through a communication network to back up and manage the shooting information at the site. It consists of.

The field-side device is installed at each monitoring site and connected to each of the plurality of camera blocks 30 for photographing the surrounding situation, and connected to each of the plurality of camera blocks 30 to convert the captured analog image signal into a digital signal, and then to MPEG-4. Composed of a plurality of field computers (10) for compressing and storing in a video compression format.

The MPEG-4 video compression format is an object-oriented interactive compression technology, in which all objects in a screen are separated into one object and stored or transmitted, so that the divided objects can be gathered into one side to view the completed screen. It realizes ultra-low compression ratio of 64Kbps.

The field computer 10 may further connect a monitor 20 for displaying the captured video signal of the camera block 30 or the existing stored video signal, and adds a printer 40 for outputting the image data. You can connect to

Next, the remote device is connected to the field computer 10 through the communication network (50, 60), receives a digital video compression signal from the field computer 10, the function of the plurality of field computers 10 A remote computer 70 that performs management control of execution, selection, and the like, and an auxiliary storage device 90 that stores a digital video compression signal from the remote computer 70.

As described above, the remote computer 70 may additionally connect a monitor 20 for displaying an image signal and additionally connect a printer 40 for outputting image data. .

The communication networks 50 and 60 may be Internet dedicated lines, telephone lines, wireless communication networks, or the like.

2 is a detailed block diagram of the field-side device and the remote-side device of the system of the present invention, which shows a connection state between any one of the plurality of camera blocks 30 and the field computer 10 and the remote computer 70.

The camera block 30 is composed of a plurality of CCD cameras 31 to 3n installed at each monitoring site to photograph surrounding conditions.

In addition, the field computer 10 receives image input signals from any one of the plurality of CCD cameras 31 to 3n according to the controller 11 for controlling the operation of the entire apparatus and the control signals of the controller 11. A / D converter 12 for switching and outputting, an A / D converter 13 for converting an analog video signal from the video switch 12 into a digital signal, and an A / D in response to a control signal of the controller 11 An image compressor 14 for compressing the digital signal from the converter 13 into an MPEG-4 video compression format, a data storage device 15 for storing the compressed digital video signal, and a control of the controller 11. And a motion detector 16 for detecting a motion video signal among the output digital signals from the A / D converter 13.

In the above, motion detection of the motion detector 16 is performed in software using a block based object selection system (BOSS) algorithm.

The BOSS algorithm separates the input image into two regions of the background and the target region, and can perform efficient compression encoding by applying different compression methods in consideration of the importance of the separated regions. Since backgrounds are not stored, unnecessary storage can be reduced.

In addition, by using an area dividing technique, an image having a relatively high importance of information, for example, an image of an intruder may be improved in image quality compared to a background image, thereby greatly improving the recognition of information in the image.

The controller 11 is further connected with a communication interface device 17 for communicating with the outside.

In addition, the controller 11 may additionally connect a monitor 20 for displaying a captured image signal or an existing stored image signal, and may further connect a printer 40 for outputting image data.

Although not shown in FIG. 2, the controller 11 of the field computer 10 may further connect a search system 73 for searching image information of a specific date or time and a specific place.

On the other hand, the remote computer 70 is a field controller under the control of the center controller 71, the communication interface device 74 for communication with the field computer 10, and the center controller 71 for the operation control of the entire device A data storage device 75 storing digital compressed video information from the computer 10, and a retrieval system 73 connected to the center controller 71 to retrieve image information of a specific date or time and a specific place. It is configured by.

In addition, the center controller 71 is connected with a management system 72 for managing and controlling functions such as executing and selecting functions of the plurality of field computers 10, and the data storage device 75 has a plurality of field computers ( A secondary storage device 90 for storing a plurality of field surveillance image information from 10) is connected.

In addition, like the controller 11, the center controller 71 may further connect a monitor 80 for displaying an image signal, and may additionally connect a printer 100 for outputting image data. .

The communication networks 50 and 60 may be Internet dedicated lines, telephone lines, wireless communication networks, or the like.

3 is a block diagram of a site-side device to which the means for adjusting the photographing angle of the monitoring site is added in the present invention, and the same components as those of the site computer 10 of FIG. Shall be.

In the drawing, each of the plurality of CCD cameras 311 to 3n1 of the camera block 30 is connected with a pan tilt driver 312 to 3n2 for adjusting the shooting angle of up, down, left and right, and the pan tilt driver 312 to 3n. 3n2 is connected to the controller 11 of the field computer 10, and is configured to adjust the photographing angles of the CCD cameras 311 to 3n1 vertically or horizontally according to the control of the controller 11.

Referring to Figures 4 to 5 the operation of the system of the present invention configured as described above is as follows.

Figure 4 is a flow chart showing the operation of the field-side device in the system of the present invention.

First, when the surrounding situation is photographed by the CCD cameras 31 to 3n of the camera blocks 30 installed at each site, an analog image is obtained from the A / D converter 13 of the field computer 10 connected to the camera block 30. The signal is converted into a digital video signal and output.

The motion detector 16, which is operated by software in the field computer 10, monitors the digital video signal from the A / D converter 13, detects the presence or absence of a motion video signal, and detects whether the motion video signal is detected. Output to the controller 11.

Subsequently, the controller 11 receiving the detection information of the motion image signal outputs a control signal to the image compressor 14, and the image compressor 14 extracts only the image information of the moving subject according to the control signal to MPEG-. 4 Output the video in compressed video format.

The data storage device 15 stores the compressed digital image information, and the controller 11 transmits the compressed digital image information to the remote place through the communication interface device 17.

At this time, when the motion detection signal of the motion detector 16 is stopped, that is, when there is no moving subject, compression storage and transmission of the image information is stopped, and the mode is switched to the recording standby mode to monitor the next motion.

In addition, according to the search conditions such as a specific date, time, place, etc., an operation of searching and displaying the compressed digital image information stored in the data storage device 15 on the monitor 20 may be additionally performed. When the request signal is input, an operation of outputting through the printer 40 may be added.

In addition, an operation of adjusting the photographing angles of the CCD cameras 311 to 3n1 by the pan / tilt drivers 312 to 3n2 of the camera blocks 30 by the control of the controller 11 may be added.

5 is a flowchart showing the operation of the remote device in the system of the present invention.

First, when the compressed image information is received from the field computer 10 through the communication interface device 74, the compressed image information is stored in the data storage device 75 as a backup file. When the image information is requested to be retrieved, the retrieval system 73 Outputs a search condition input window.

After that, if a search condition such as a specific date, time, place, etc. is input, the search system 73 requests the center controller 71 to search for the information of the condition, integrating the data storage device 75 and all field monitoring information. The stored secondary storage device 90 retrieves the image information of the corresponding condition.

If the search result does not contain the search information, the search condition input window for re-search is output again.

In addition, if there is search information of the search result, the compressed video information is decompressed and displayed on the monitor 80, and the additional search request is checked.

Herein, when the output request signal of the specific image data is input, an operation of outputting through the printer 100 may be added.

As described above, the present invention converts and compresses continuous photographing information or motion detection information of a designated surveillance area into digital values and stores them in a storage device of a field computer, and also arranges the photographing information or motion detection information in a safe place at a remote location. By backing up to the remote computer, it is effective to secure the monitoring data of the site by using the backup file of the remote computer.

In addition, the present invention by storing the photographing signal as a digital signal, it is possible to maintain the image quality of the original, to conveniently search and play the image information of a specific date and time, and to enlarge and display a specific portion of the image information There is.

Claims (12)

In a surveillance system for converting and storing analog video signals photographed at each site in a digital form, a plurality of camera blocks (30) installed at each monitoring site and photographing the surrounding situation, and each of the plurality of camera blocks (30) A field-side device having a plurality of field computers 10 for converting and compressing and storing the analog image signal photographed and connected to the digital signal; A remote computer 70 connected to the field computer 10 through the communication networks 50 and 60 to receive a digital video compression signal and perform management control such as function execution and selection of a plurality of field computers 10; Remote side device having an auxiliary storage device 90 for storing the digital video compression signal from the remote computer as a backup file; including, The field computer 10 is a controller 11 for the operation control of the entire device And a video switch 12 for switching and outputting video input signals from any one of the plurality of CCD cameras 31 to 3n according to a control signal of the controller, and an analog video signal from the video switch as a digital signal. A / D converter 13 for converting, an image compressor 14 for compressing the digital signal from the A / D converter 13 by the control signal of the controller 11, and a day for storing the compressed digital signal. A storage device 15, a motion detector 16 for detecting a motion video signal among the output digital signals from the A / D converter 13 under the control of the controller 11, and an external remote through the communication network 50; Communication interface device 17 for connection with the computer 70 and a monitor 20 and a printer 40 for outputting the image information of the monitoring site to the monitoring manager, and the remote computer 70 The center controller 71 for operation control of the entire apparatus, the communication interface device 74 for connection with the field computer 10, and the digital compression from the field computer 10 under the control of the center controller 71. And a data storage device 75 for storing video information, and a search system 73 connected to the center controller 71 for searching video information according to a search condition. city System. The system of claim 1, wherein the communication network (50, 60) is any one or two or more of an Internet dedicated line, a general telephone line, and a wireless communication network. According to claim 1, wherein each of the plurality of camera blocks 30 is installed in each monitoring place and a plurality of CCD cameras (31 ~ 3n) for capturing the surrounding situation, characterized in that the TV with a remote backup function system. delete The method of claim 3, wherein the plurality of CCD cameras (31 to 3n) comprises a pan tilt driver for adjusting the photographing angle of each CCD camera up, down, left, right according to the control signal of the controller (11). DVR system with remote backup function. delete 2. The DVR system according to claim 1, wherein the motion detector (16) comprises software using a block based object selection system (BOSS) algorithm. delete delete The system of claim 1, wherein the center controller (71) has a management system (72) for management control of function execution and selection of a plurality of field computers (10). The apparatus of claim 1, wherein the data storage device (75) has an auxiliary storage device (90) for storing and storing a plurality of field surveillance image information from a plurality of field computers (10). DVD system. delete