KR101070901B1 - Method and system for playback data of DVR using by mobile storage - Google Patents

Abstract

Provided are a method and a system for storing image data stored in a digital image storage device in a removable storage device and reproducing the same on a second image reproducing medium. According to an embodiment of the present invention, a digital image reproducing system converts an analog image photographed by a camera into a digital signal and stores it in an internal hard disk, and a portable storage device connected to an external data communication port is compatible with the second image reproducing apparatus. A digital video storage device for determining whether the device is in a state, and formatting the portable storage device with a file system compatible with the second video playback device according to the determination result, and storing the searched video file and video playback software in the formatted mobile storage device; And a second image reproducing apparatus recognizing a portable storage device storing the image file and the image reproducing software and reproducing the image file stored in the portable storage device.

CCTV, video recorder (DVR), memory card, file system, file format

Description

Method and system for playback data of digital video storage device using mobile storage device

1 illustrates a CCTV system according to an embodiment of the present invention.

2 is a block diagram of a digital image storage device according to an embodiment of the present invention.

3 illustrates a configuration of a removable storage device according to an embodiment of the present invention.

4 is a block diagram of a second video reproducing apparatus according to an exemplary embodiment of the present invention.

FIG. 5 illustrates a flow of image data of the digital image storage device to be stored in the portable storage device and reproduced in the second image reproducing apparatus according to an exemplary embodiment of the present invention.

<Explanation of symbols on main parts of the drawings>

170: digital video storage device

300: removable storage device

400: second video playback device

The present invention relates to a method and system for storing image data of a digital image storage device in a portable storage device so that the image of the digital image storage device is reproduced even in a second image reproducing apparatus having a file system different from that of the digital image storage device. More specifically, by formatting the removable storage device into a file system compatible with the operating system of the second image reproducing medium and storing the retrieved image file and the image reproducing software in the portable storage device, the second digital image storage device and the file system are different from each other. The present invention relates to a method and a system for reproducing an image file stored in the portable storage device.

Television systems are largely classified into open circuit systems and closed circuit systems. The open circuit system delivers image information to an unspecified number of users. Image transmission is mainly performed wirelessly, and TV broadcasting through broadcasting stations is a typical example. On the other hand, a closed circuit system transmits image information to a specific receiver for a specific purpose. The image is mainly transmitted through a wire, and is generally called a CCTV (Closde Circuit Television). In addition to broadcast television, CCTV systems have many uses, such as industrial, educational, medical, disaster prevention, and in-house image information transfer.In recent years, CCTV systems are gradually being advanced, such as switching from black and white to color and analog to digital. I'm going.

Conventional CCTV systems generally include cameras, video storage devices, monitors, and the like. The image data captured by the camera is transferred to the image storage device through the data transmission cable, and the image data transferred to the image storage device is recorded on the recording medium of the image storage device and displayed on the monitor so that the user can check the captured image. do.

In the case of the image storage device in the above CCTV system, in the past, video information recorded using the tape as a recording medium was stored on the tape, but problems caused by using the tape as the recording medium such as deterioration of image quality, storage location, and retrieval of stored data. Recently, they have been replaced by digital video storage (DVR).

In the case of a CCTV system including a digital video storage device, when a camera installed at a specific location captures the situation, the analog video data captured by the camera is transmitted to the digital video storage device through a data transmission cable such as a BNC cable. In the digital image storage device, the received analog image data is converted into digital image data, compressed, and then stored in an internal hard disk.

The data stored in the hard disk can be reproduced for a long time, can be stored semi-permanently without changing the image quality, and the data can be easily retrieved.

Image data stored in such digital image storage devices are often submitted as evidence to courts or police stations due to the uniqueness of surveillance images. However, these image data are formatted into a unique file format of a digital storage device during compression and storage. Therefore, there is a problem that the image data of the digital image storage device is not reproduced in the second image reproducing apparatus having a file system system different from that of the digital image storage device.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problem, and after the mobile storage device physically connected to the external data communication port of the digital video storage device is formatted with the file system of the second video playback device, the searched video file and video playback software It is an object of the present invention to provide a method and a system for reproducing an image file stored in a portable storage device even in a second image reproducing medium having a file system different from that of a digital image storage device by storing the.

However, the object of the present invention is not limited to the above-mentioned object, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, an image reproducing system according to an exemplary embodiment of the present invention converts an analog image photographed by a camera into a digital signal, compresses the image, and stores the image on an internal storage medium according to a file system of an operating system. Digital image storage device and image file and image playback software are stored in the portable storage device physically connected to the external data port and the image playback software to search the image stored in the storage media and play the searched image And a second image reproducing device recognizing the mobile storage device and reproducing the image file stored in the mobile storage device.

In order to achieve the above object, the image reproducing method according to an embodiment of the present invention comprises the steps of determining whether the mobile storage device physically connected to the external data communication port of the digital image storage device is compatible with the second image reproducing device, If it is determined that the removable storage device is not in a state compatible with the second video player, formatting the removable storage device into a file system compatible with the second video player, after formatting the removable storage device, through the user interface Storing the searched image file and the image reproducing software capable of playing the retrieved image file in the portable storage device, and the second image reproducing apparatus recognizes the portable storage device connected to the external data port of the second image reproducing device, It includes the steps of playing the stored video file. The.

Specific details of other embodiments are included in the detailed description and drawings, and the advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be embodied in various different forms, and the present embodiments merely make the disclosure of the present invention complete and common knowledge in the technical field to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

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

First, Figure 1 shows the configuration of a CCTV system to which the digital image storage device according to an embodiment of the present invention. In general, a CCTV system includes a camera (110, 120), a Video Distributor Amplifier (VDA) 140, a Digital Video Recording (DVR) 170, a Matrix (MATRIX) 150, a monitor. (161, 162, 163), the system keyboard 130, serial communication line 190 for transmitting a communication signal between the keyboard and the camera, BNC cable for transmitting image data signals between other system devices such as cameras and monitors And 180.

The cameras 110 and 120 are devices for photographing a screen requested by a user, and image information captured by the camera is transmitted to the DVR 170 and the monitor 163 through the coaxial cable 180.

The video signal distributor (VDA) 140 distributes the video signals photographed and transmitted by one camera 110 to be output to the plurality of monitors 161 and 162.

The matrix 150 allows an arbitrary camera image to be displayed on an arbitrary monitor according to an administrator's intention. The matrix 150 transmits an image signal captured by a plurality of cameras to a plurality of monitors through a cross point switching method. Causes output

The monitors 161, 162, and 163 display an image signal photographed by the camera so that the user can view the image signal photographed by the camera.

The keyboard 130 is a device that can control the controlled devices such as the camera 120, the digital image storage device 170, the matrix 150, and the like, and the movement of the camera 120 or the digital image storage device ( 170, etc. are controlled. The control signal generated from the keyboard is transmitted to the control unit via a separate control signal transmission line 190, for example, a cable such as RS485.

The digital video recording device (DVR) 170 converts an analog video signal captured by the camera 120 and transmitted through the coaxial cable 180 into a digital video signal, and then converted into a digital video signal. To the MPEG (Moving Picture Expert Group), the international standard for moving picture compression, to be stored on an internal storage medium, or to restore and store recorded images for a long time. There are various functions.

As shown in FIG. 2, the A / D converter 210, the codec module 250, the hard disk 260, the memory 270, and the controller 240 are illustrated in FIG. 2. And data communication ports 280 for the external interface.

The input of the analog to digital converter 210 is connected to the output of the camera 120 through the coaxial cable 180. The analog video signal transmitted along the coaxial cable 180 is converted into a digital video signal. Converted to and transmitted to the codec module 250 or to the monitor 163 to be displayed.

The codec module 250 may compress a digital video signal transmitted from the A / D converter 210 by an image compression method, for example, a wavelet, M-JPEG, MPEG2, MPEG4, or the like. Restore                     

The digital image data compressed by the codec module 250 is stored in a storage medium such as a hard disk 260. The hard disk 260 includes an operating system used for a digital image storage device and software for reproducing stored images. And the like.

The data communication port 280 for the external interface includes both a wireless interface and a wired interface such as IEEE1394, USB, and the like. Various removable storage devices may be connected to the wireless and wired interfaces. For example, an IEEE1394 removable hard disk may be physically connected to the IEEE1394 port, and a removable memory card such as a USB flash memory, a memory stick, or a Compact Flash Card may be connected to the USB port.

Looking at the flow of the video signal in a CCTV system including a digital video storage device as described above, first, the analog video signal taken through the camera 120 to the digital video storage device 170 along the coaxial cable 180. The analog image signal transmitted to the digital image storage device 170 is converted into a digital image signal by the A / D converter 210 of the digital image storage device. The video signal converted into a digital signal is compressed by a video compression method, for example, MPEG-4, via the codec module 250. The compressed image is formatted into a file format suitable for an operating system of a digital image storage device, for example, Linux's file system, and then stored in the hard disk 260. On the contrary, when the stored image data is reproduced, the controller 240 transmits a command related to data reproduction to the codec module 250, and the codec module 250 received the image reproduction command from the controller is the hard disk 260. Read and decompress the relevant image data on the screen and display the restored image on the monitor.

Meanwhile, the digital image storage device 170 according to an exemplary embodiment of the present invention includes a user interface for searching stored image data. The data retrieval user interface stores a part for inputting date information about stored image data, a confirmation icon for executing data retrieval for the input date, a part for displaying the data retrieval result, and a retrieved image in the portable storage device. Contains a save icon that can be loaded.

The process of retrieving image data stored in a hard disk of a digital image storage device through a user interface including the above components and storing the retrieved image file in a portable storage device will be described below.

First, a user physically connects a portable storage device for storing data to an external data port 280 of the digital image storage device. Next, when the user inputs the date information of the image to be searched in the date information input window of the data search user interface and clicks the confirmation icon, the search is executed. As a result of the search, if there is an image file corresponding to the condition, the file name of the searched image is displayed in the portion where the search result is displayed. Thereafter, when the user selects the mobile storage device to store the searched data and clicks the storage icon, the controller receives a signal corresponding to the storage icon click and processes the same.

That is, when the storage icon is clicked, the controller determines whether the portable storage device is compatible with the second video player, and if the portable storage device is not compatible with the second video player, as a result of the determination, the portable storage device Format a file system compatible with the second video reproducing apparatus.

When the removable storage device is formatted as a file system compatible with the second image reproducing device, the portable storage device may be formatted as a file system set as a default value or a file system selected by a user.

After the portable storage device is formatted by the above method, the controller reads the image reproducing software stored in the hard disk and stores the image data on the portable storage device together with the image data.

Next, a portable storage device according to an embodiment of the present invention will be described. The removable storage device may include a removable memory card such as an IEEE1394 removable hard disk, a USB flash memory, a memory stick, a compact flash card, or the like. Hereinafter, in the embodiment of the present invention, the removable storage device is a USB flash memory. This will be described.

The USB flash memory 300 includes a controller 310 and a memory 320 as shown in FIG. 3. The controller 310 generates a command related to data writing so that data transmitted from the digital image storage device 170 can be stored in the memory 320.

The memory area 320 is divided into logical units called blocks, and each block is divided into smaller unit pages. Each page is divided into a plurality of sectors. When data is recorded in the memory area 320 according to a command of the controller 310, the pages are written in units of pages.                     

The USB flash memory 300 is physically connected to the USB data communication port 280 implemented externally to the digital image storage device 170. According to an embodiment of the present invention, after the USB flash memory 300 connected to the external data communication port 280 of the digital image storage device 170 is formatted into a file system compatible with the second image reproducing apparatus, image data and images The playback software is saved. At this time, the image playback software stored in the portable storage device also runs on a Windows-based operating system. Therefore, even if the software for reproducing the image is not installed in the second image reproducing apparatus, the image data stored in the USB flash memory 300 can be reproduced.

Meanwhile, the second image reproducing apparatus according to the embodiment of the present invention is preferably a device based on a window as an operating system. The second image reproducing apparatus may include a device such as a PC, a notebook computer, a PDA, and a smart phone. Hereinafter, a case of a personal computer using a window as an operating system will be described.

A general personal computer mainly includes a monitor, a keyboard, and a main body. The main body of the computer includes a storage device, a power supply unit, a main board, and a system bus connecting the storage device and the main board to transmit addresses and data.

 As illustrated in FIG. 4, the main board 400 includes a north bridge 420 and a south bridge 430. The north bridge and the south bridge are system buses 470 called PCI buses. ) To manage the entire computer system as a whole. The northbridge 420 controls the exchange of data between devices with relatively high data rates, such as the central processing unit 410, a memory 424 such as RAM, and an AGP 422 to which a graphics card is connected, while the southbridge 430 ) Is a relatively slow data transfer device such as IDE (436), PCI (434), ROM BIOS (439), USB controller (438) connected to a storage device such as hard disk drive 440 or CD-ROM (450) Performs data input / output and power management between them.

The USB port 460 may be connected to the USB controller 438 to be implemented outside of the computer. The USB port 460 includes a removable storage device in which image data and image reproducing software of the digital image storage device 170 are stored. For example, the USB flash memory 300 is physically connected.

In this case, since the USB flash memory 300 is formatted as a file system compatible with Windows, which is an operating system of the computer, even though the USB flash memory 300 is physically connected to the USB port 460 of the computer, the USB flash memory 300 may be recognized by the computer without compatibility problems due to the file system. .

After the USB flash memory is recognized by the computer, when the user double-clicks a file stored in the USB flash memory 300, first, the image playback software is executed, and the executed image playback software executes the codec included in the software. Decode the video file stored together so that it can be played.

Alternatively, when the USB flash memory connected to the USB port 460 of the computer is recognized by the computer in accordance with another embodiment of the present invention, the image reproducing software stored in the USB flash memory 300 is automatically executed to execute the image. Video files stored together by the playback software may be decoded to cause the decoded video files to be played back sequentially.

As described above, according to the preferred embodiment of the present invention, the second image reproducing apparatus such as a computer can reproduce and view the image data of the digital image storing apparatus by using image reproducing software stored in the mobile storage apparatus.

In the system including the components described above, the process until the image data stored in the USB flash memory 300 is reproduced in the computer according to an embodiment of the present invention is shown in FIG.

First, the user connects the USB flash memory 300 to the USB port 280 of the digital image storage device 170 (S500). Subsequently, the image data to be stored in the USB flash memory 300 is searched using the image search user interface, the USB flash memory 300 is selected as a medium in which the found image data is to be stored, and then the storage icon is clicked (S510). When the storage icon is clicked, the control unit 240 of the digital image storage device determines whether the USB flash memory 300 connected to the USB port 280 is compatible with the computer (S517). If the state is not compatible with the computer, the removable storage device is formatted as a file system compatible with the computer, for example, a virtual file allocation table (VFAT) (S520). After the removable storage device is formatted, the controller 240 copies the image reproducing software stored in the lower disk 260 and stores the image reproducing software together with the image data in the USB flash memory 300 (S530). Thereafter, when the USB flash memory 300 storing the image data and the image reproducing software is connected to the USB port 460 of the computer, the computer recognizes the USB flash memory 300 as one storage medium (S540). In the process, the image reproducing software stored in the USB flash memory 300 is executed. The image reproducing software decodes the image data stored in the USB flash memory 300 by using the codec included in the software so that the image can be reproduced (S550).

With reference to the drawings exemplified as above, the method and system for transmitting the information of the digital broadcast receiver using the short message service according to the present invention have been described, but the present invention is an embodiment and drawings disclosed herein Without being limited thereto, various modifications may be made by those skilled in the art within the scope of the technical idea of the invention.

As described above, according to the method and system for reproducing an image of a digital image storage device according to the present invention in a second image reproducing apparatus, there are one or more of the following effects.

First, an image file of a digital image storage device stored in a portable storage device may be reproduced in a second image reproduction device having a different digital image storage device and a file system.

Second, even in a second video playback device that does not have video playback software installed to play back images from a digital video storage device, the video files stored in the mobile storage device may be played using the video playback software stored in the mobile storage device. There is also an advantage that can be.

Claims (5)

After converting the analog image captured by the camera into a digital signal and compressing the image, the image is stored in an internal storage medium according to a file system of an operating system, and the image stored in the storage medium is searched through a user interface to search for the searched image and the searched image. A digital image storage device storing image reproducing software capable of reproducing the data on a portable storage device physically connected to an external data port; And A file system having a file system different from that of the digital image storage device and connected to the portable storage device, for recognizing the mobile storage device in which the image and the image reproducing software are stored, and reproducing an image stored in the mobile storage device; 2 A video playback system comprising a video playback device. The method of claim 1, wherein the digital image storage device If the portable storage device physically connected to the digital video storage device is determined to be compatible with the second video playback device, and the determination result indicates that the mobile storage device is not compatible with the second video playback device, And format the removable storage device into a file system compatible with the second image reproducing device, and then store the image and the image reproducing software in the portable storage device. In the image playback method by the second image playback device that can be connected to at least one of the digital image storage device and the second image playback device, and having a file system different from the digital image storage device, In the state in which the portable storage device is physically connected to the digital image storage device through the user interface of the digital image storage device, the digital image storage device determines whether the portable storage device is compatible with the second image playback device. Making; Formatting the removable storage device to a file system compatible with the second video player according to a result of determining whether the portable storage device is compatible with the second video player; Storing the image file retrieved through the user interface and the reproduction software of the image file in the portable storage device; And And when the portable storage device is connected to the second image reproducing device, the second image reproducing device recognizes the mobile storage device and plays the image file stored in the mobile storage device. How to play. Claim 4 was abandoned when the registration fee was paid. The method of claim 3, wherein the format of the removable storage device is A video playback method formatted with the file system set by default or with the file system selected by the user. Claim 5 was abandoned upon payment of a set-up fee. The method of claim 3, wherein the playing of the image file comprises: And reproducing the image by decoding the image file by the image reproducing software.

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