KR100421690B1 - Image Data Storage System and Method for Managing Image Data in Digital Video Recorder - Google Patents

Abstract

PURPOSE: A method for managing video data on a digital video recorder and a system for storing the video data are provided to fix a channel for receiving the video data from a video camera and store/manage the video data in a storing space allotted to each channel. CONSTITUTION: A channel fixing tool(210) fixes the channel between the digital video recorder(205) and the video camera(270). A camera interface tool(220) receives the video data from the video camera through the channel. A management information database(230) stores management information including a channel ID and a storing space ID matched with the storing space to store the video data received through the channel. A storage controlling tool(250) stores the video data in a storing medium(240) matched with the storing space by referring to the management information.

Description

Image Data Storage System and Method for Managing Image Data in Digital Video Recorder}

The present invention relates to a method for managing image data in a digital video recorder and an image data storage system. More particularly, the present invention relates to allocating a storage space according to a channel set through connection with each video camera, A video data storage system and a method for managing video data in a digital video recorder for storing video data to manage video data.

Digital Video Recorder (Digital Video Recorder) is a recording device that has been developed by improving the technical limitations of existing CCTV systems. It has improved the trouble of frequently changing tapes in CCTV systems and deterioration of recording quality. In addition, the digital video recorder is easy to operate and manage, and it is possible to greatly increase its scalability by adding a storage medium (e.g., a hard disk), and to compress and store a large amount of video data of high capacity and high definition for a long time. have.

What's more, you can perform quick and accurate search and remote control, specify the video camera you want, or receive the scene in real time without time and distance limitations. In addition, the addition of a communication function can monitor a remote screen even in a normal home, and includes various convenient functions.

A typical configuration of such a digital video recorder will be described with reference to FIG.

As shown in FIG. 1, the digital video recorder 100 is connected to a predetermined number of video cameras 110 to 140 interspersed in a place where video camera shooting is required, and is generated by the video cameras 110 to 140. The received image data through a communication network. The digital video recorder 100 and the video cameras 110 to 114 are connected by wire, for example, by a coaxial video cable. The received image data is stored in a large capacity hard disk or an optical disk built in the digital video recorder 100.

However, in the related art image data management in a digital video recorder, image data received from a plurality of video cameras is stored and managed in a hard disk in the order in which they are received without providing any identification code. For example, since the image data input from the video camera 110 is important data, it is necessary to store it in a high frame and store it for a long time. Since the image data input from the video camera 120 is relatively less important data, There may be times when you need to save a file and save it relatively shortly, but you can only save it for the same amount of time. In this case, only image data input from the video camera 120 cannot be separately managed, and the image data should be overwritten or a backup should be performed.

Accordingly, under such a storage method, the management of the image data is not based on the video camera generating the image data, but on the hard disk as a storage medium. The problem is that it takes considerable time and money to know.

In addition, when the free space of the hard disk to store the image data disappears, the overwrite to save the data while erasing the image data stored for the longest time is automatically executed. There is also the hassle to do.

In addition, in the backup work of the video data, all the stored video data is stored in one hard disk, so it is not easy to identify the video data, and there is a difficulty in extracting the video data desired by the administrator. There is also a problem.

In addition, according to the related art, it is not possible to perform management such as changing the time, storage speed and overwrite period for storing image data for each channel.

The present invention has been made to solve the above problems, the image data in the digital video recorder to set the channel for receiving the image data from the video camera, and to store and manage the image data in the storage space allocated for each channel It is an object to provide a storage system.

In addition, an object of the present invention is to provide a video data storage system in a digital video recorder that can remove the storage space from the device by hot swap processing without power-off when a backup operation of the video data stored for each channel is required To provide.

Further, another object of the present invention is to provide a video data storage system in a digital video recorder that can flexibly respond to storage conditions for storing video data according to a manager's request.

In addition, an object of the present invention is to provide a video data storage system in a digital video recorder that allows an administrator to be notified of a warning message when the storage ratio of the storage space is more than a predetermined range.

1 is a block diagram showing the connection of a conventional digital video recorder and a video camera.

2 is a block diagram illustrating in detail the configuration of an image data storage system according to an exemplary embodiment of the present invention.

3 is a flowchart illustrating a method of managing image data according to an exemplary embodiment of the present invention.

4A to 4C are diagrams illustrating an example of management information for designating storage spaces allocated for respective channels.

5A is a flowchart of a new channel setting operation as another embodiment of the present invention.

5B is a diagram illustrating an example of channel setting information according to addition of a video camera.

5C is a diagram illustrating an example of channel setting information when a channel is changed.

6A is a flowchart of a storage operation based on storage conditions in another embodiment of the present invention.

6B is a diagram illustrating an example of a storage condition including information on a storage time.

6C is a diagram illustrating an example of a storage condition including information regarding a storage speed.

6D is a diagram illustrating an example of a storage condition including information on an overwrite period.

7 is an internal block diagram of a general purpose computer device that may be employed to construct an image data storage system in accordance with the present invention.

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

200: image data storage system 205: digital video recorder

210: channel setting means 220: camera interface means

230: management information database 240: storage medium

250: storage control means 260: storage condition input means

270: video camera

In order to achieve the above object, a method of managing image data in a digital video recorder of the present invention comprises: establishing a first channel between the digital video recorder and a first video camera connected to the digital video recorder, and the first channel. Associating a first storage space with each other, maintaining information about the first channel and the first storage space as management information, receiving first image data through the first channel, and managing the management information. Storing the first image data in the first storage space associated with the first channel by means of a predetermined storage control means, and between the digital video recorder and a second video camera connected to the digital video recorder. Establishing a second channel, associating the second channel with a second storage space, and wherein the second channel and the second low Maintaining information regarding space as the management information, receiving second image data through the second channel, and storing the second image data by the storage control means based on the management information. Storing in the second storage space associated with the second channel, wherein the storage control means overwrites the first storage space associated with the first channel and in the second storage space associated with the second channel. It is characterized in that the overwrite for the control to be performed independently.

In addition, as a technical configuration for achieving the above object, the image data storage system in the digital video recorder of the present invention, channel setting means for setting a predetermined channel between the digital video recorder and the video camera connected to the digital video recorder; And a camera interface means for receiving image data from the video camera through the channel, a channel identifier corresponding to the channel, and a storage space identifier corresponding to a storage space for storing the image data received through the channel. Associate a management information database for storing information, a storage medium corresponding to the storage space, storage condition input means for receiving a storage condition associated with the storage of the image data on the storage medium, and the storage condition with the management information; , Prize Refer to the management information related to include storage control means for storing the image data received through the channel to the storage medium that corresponds to the storage space.

Hereinafter, a method and a video data storage system for managing video data in a digital video recorder according to the present invention will be described with reference to the accompanying drawings.

2 is a block diagram illustrating in detail the configuration of an image data storage system according to an exemplary embodiment of the present invention.

As shown in FIG. 2, the image data storage system 200 is included in the digital video recorder 205, and channel setting means for setting a predetermined channel between the video camera 270 connected to the digital video recorder 205. 210, a camera interface means 220 for receiving image data from a video camera 270 through a channel, and a storage space corresponding to a channel identifier corresponding to the channel and a storage space for storing image data received through the channel. A management information database 230 for storing management information including an identifier, a storage medium 240 corresponding to the storage space, and a storage medium corresponding to the storage space with reference to the management information; Storage control means 250 for storing in 240.

The apparatus may further include a storage condition input unit 260 which receives a storage condition of the image data from the manager.

The channel means a logical movement path through which image data generated by the video camera 270 is transmitted to the digital video recorder 205, and a predetermined number of channels may be allocated to each video camera 270. In principle, one channel is allocated to each video camera 270. However, when a video data transmission path of the video camera 270 is to be made more than two according to the needs of video data management, the video camera is used. The channel may be further allocated to 270 by additionally including a connection medium (eg, a coaxial video cable or a multichannel forming apparatus).

The channel setting means 210 of the present invention is an apparatus for logically setting a channel between the video camera 270 and the digital video recorder 205 corresponding to a channel allocated to each video camera 270 and a predetermined channel. Built-in configuration software. That is, the channel setting means 210 software-connects each video camera 270 and the digital video recorder 205 and generates a channel identifier having information about each channel.

The camera interface unit 220 is an apparatus for receiving image data generated by each video camera 270 through a set channel. In general, the image data received from the video camera 270 is transmitted in an analog format and converted by the camera interface unit 220 into a predetermined digital compression format. This improves the data storage efficiency of the video data storage system 200 by converting analog video data into digital signals such as JPEG, M-JPEG, MPEG-1, Wavelet, MPEG2, JPEG2000, MPEG-2, MPEG-4, and the like. To minimize the damage of the original image data due to external influences. According to another embodiment of the present invention, a digital video camera is used for the video camera 270. In this case, since the image data received from the video camera 270 is a digital format, a separate format conversion is not necessary. .

The management information database 230 is a device for storing management information and stores information about channel setting. The management information includes a channel identifier for identifying a channel corresponding to each channel, and a storage space identifier which is an identifier corresponding to a storage space for designating image data received through the channel. The image data storage system 200 of the present invention stores the image data received in the storage medium 240 corresponding to the storage space corresponding to each channel based on the management information. In addition, the management information receives information on the storage condition of the image data requested by the administrator and updates the information. The storage condition will be described in more detail in the description of the storage condition input means 260 described later.

The storage medium 240 may be a conventional hard disk that stores image data, and corresponds to the storage space. That is, according to the management information database 230, a storage space for storing the image data received through the channel per channel is determined, and the storage space corresponds to the storage medium 240, which is used to store the received image data for each channel. This means that the storage medium can be identified. The allocation method of recording media for each channel may include a physical allocation method for allocating one hard disk per channel and a logical allocation method for dividing the storage medium 240 into partitions and allocating a channel to a generated drive identifier. Can be. In addition, a folder may be created in the storage medium 240 by a predetermined data management program (eg, an OS program), and the image data may be stored by assigning a folder for each channel. In the present specification, a hard disk is used as an example of the storage medium 240. However, any recording medium that is commonly used in the computer field, such as an optical recording medium such as a CD-ROM or a DVD or a magnetic medium, for storing data may be used. .

The storage control means 250 is a means for storing the received image data in the allocated storage medium 240 based on the management information. The storage control means 250 controls the image data received for each channel and stores the received image data in the storage medium 250. In addition, when a storage condition of the image data is received from the manager, the image data is appropriately stored in the storage medium 240 accordingly.

The storage condition input means 260 is an apparatus for inputting a storage condition of image data requested by an administrator. The storage condition may include, for example, condition information about a storage time and an end time of the image data, a storage speed, an overwrite cycle, and the like. The storage time of the image data means information on the start time and the end time of the image data. The storage speed is the number of frames per second in which the image data is recorded, and the overwrite period is obtained by erasing the image data stored for the longest period. It may mean a period for continuing the recording operation of the image data to the storage area. For example, when the overwrite period is 30 days, the image data input for 30 days is stored in the storage medium 240, and the image data input from the 31st day is overwritten on the already stored image data. An embodiment of the present invention for inputting such a storage condition and storing image data accordingly will be described in detail in the following working flowchart of the present invention.

Therefore, the image data storage system 200 of the present invention has an advantage in that the image data generated by each video camera 270 can be systematically managed by storing the image data in the storage medium 240 allocated for each channel.

3 is a flowchart illustrating a method of managing image data according to an exemplary embodiment of the present invention.

The method for managing image data in the image data storage system 200 may include setting a first channel between the digital video recorder 205 and a video camera 270 connected to the digital video recorder 205 (S310); Associating a first channel with a first storage space and maintaining information about the first channel and the first storage space as management information (S320); receiving image data through the first channel (S330); Storing the image data in the first storage space associated with the first channel based on the management information (S340); and notifying the administrator of a warning message when the image data stored in the first storage space has a predetermined size or more ( S350, receiving a command regarding whether to continue storing the image data in response to the warning message from the administrator (S360), and overwriting the storage space in response to the command (S370) or hot swapping. It includes Li step (S380) to.

Here, the first channel may mean a channel already set between the video camera 270 and the digital video recorder 100 or a channel initially set by an administrator.

First, the digital video recorder 205 sets a channel for transmitting image data between the video camera 270 and the digital video recorder 205 (S310). The connection between the digital video recorder 205 and the video camera 270 may be made through, for example, a wired connection by a coaxial video cable or a wireless connection by a wireless protocol, and the wired connection or the wireless connection may be performed by the image data storage system of the present invention. The software establishes a channel by connecting the software so that the 200 can recognize it. As described above, the channel is set for each video camera 270 as described above.

Next, the relevant information including the information on the channel setting is stored in a predetermined management information database (S320). For each channel set in the digital video recorder, information about a storage space for storing image data input from the channel is stored in the management information database as management information. The management information may be generated by the image data storage system 200 by checking information about a preset channel, and may be generated by an administrator's initial setting. That is, the information about the channel set in the step S310 may be generated as management information, or the information about the storage space for each channel designated by the administrator may be generated as the management information. In addition, the management information may include storage location information corresponding to the storage space, and the storage location information may include a physical hard disk drive or a logical drive identifier (eg, C drive, D associated with the storage space where the image data is stored). Drive, etc.) or storage folder.

The management information will be described in more detail with reference to FIGS. 4A to 4C.

4A to 4C are diagrams showing an example of management information for designating storage spaces allocated for each channel, wherein the storage spaces are physical hard disks (FIG. 4A), logical partitions (FIG. 4B), folders created by programs ( 4C) each shows an example of management information.

According to the management information of FIG. 4A, the image data transmission path of the first video camera 271 becomes channel 1 and the storage space corresponding thereto becomes the first hard disk, and the image data transmitted through the channel 1 is the first hard disk. Stored on disk. In the same way, the corresponding physical hard disk for each channel can be designated in the management information, which can be designated by the administrator, and can be arbitrarily designated in the system according to the processing capacity or data transfer capability of the system as needed. According to the present exemplary embodiment, since the storage space allocated per channel is divided into physical hard disk units, only physical hard disks corresponding to a predetermined channel need to be replaced by using hot swap, etc., so that backup and management per channel is very easy. Become convenient.

According to the management information of FIG. 4B, a channel is allocated to a logical drive generated by dividing the storage medium 240 into partitions, and a drive identifier is generated through a predetermined partition operation. As shown in FIG. 4B, the second hard drive is partitioned into two drive identifiers, namely, C drive and D drive through a partition operation, which is received through channel 2 which is a transmission path of the second video camera 272. The image data is stored in the second hard disk C drive, and the image data received through channel 3 which is a transmission path of the third video camera 273 is stored in the D drive of the second hard disk, respectively.

The management information of FIG. 4C generates a folder in a storage space by a predetermined data management program and designates a folder for each channel to receive image data. Folders store data so that they can be easily divided into certain categories and can be easily distinguished from each other. In general, the data management program uses a lot of Windows-based OS programs, and when using DOS or Unix, the concept of a directory can be used instead of a folder. The management information of FIG. 4C means to store the image data of channel 4 in a folder called 'before the crosswalk'. In addition, the name of the folder can be arbitrarily named by the administrator, which has an identification function on its own. The storage space can be designated without specifying a specific hard disk unless there is an identical folder name in management information.

Referring back to Figure 3 step S330 will be described below.

Image data is received through the first channel set in step S330. The reception of the image data may be through wired transmission through a coaxial video cable and wireless transmission by a wireless protocol. Receiving data by wireless communication is provided with a module for wireless communication in the image data storage system 200, and the channel setting software 210 for wireless channel setting software for operating such a wireless protocol may be included.

The received image data is stored in a first storage space associated with the first channel on which the image data is received, based on management information (S340). As described above, the first storage space may be physical hardware or a logical drive or folder, and the received image data is appropriately stored in the form of the first storage space.

Accordingly, image data is stored for each video camera 110 to 140, and data management such as replacement for storage space backup or overwrite of a storage area becomes easier.

In operation 350, if the image data stored in the first storage space is larger than or equal to a predetermined size, information about the image is notified to the manager. The predetermined size may be a storage ratio of the image data with respect to the first storage space, or may be an absolute size of the image data. As a notification means, a warning message by a conventional text or sound is mentioned, for example, a manager call by predetermined communication equipment, etc. can also be considered. In addition, a warning message may be transmitted through a display unit (not shown) which displays the general control items of the digital video recorder 205 to the administrator.

After the notification of the warning message, the manager is inquired of a determination regarding subsequent job processing (S360). That is, the administrator is asked whether the storage of the corresponding storage space of the image data is to be kept and waits for the administrator's judgment.

In operation S360, when it is determined that the storage operation of the image data is continued, an overwrite process is performed on the corresponding storage space (S370). The overwrite process means erasing the first stored image data without storing a backup operation for the corresponding storage space and storing the received image data in the secured storage area.

On the other hand, if it is determined in step S360 that the storage operation of the image data is stopped, a hot swap process for replacing the corresponding storage space is performed (S380). Hot swap processing is a process of leaving the storage space out of the image data storage system 200 and replacing it with a storage space having a new storage area in order to use the storage space for a backup operation or another purpose. It is possible to replace the storage space in the on) state, thereby increasing the uptime of the system.

Such overwrite processing or hot swap processing facilitates systematic management and backup processing of video data.

As another embodiment of the present invention, a specific job processing procedure for setting a new channel in the image data storage system will be described with reference to FIGS. 5A to 5C.

The formation of a new channel may take into account the establishment of a channel (eg, when a video camera or storage space is newly added) or a change of channel (eg, when a storage space to be stored for a specific channel is changed).

5A is a flowchart of a new channel setting operation as another embodiment of the present invention.

First, channel setting information regarding a second channel and a second storage space to be associated with the second channel is received from the manager (S510). That is, in addition to the digital video recorder 205 having a predetermined first channel group, a connection request for a new video camera or a new storage space is received. Herein, the second channel is named to distinguish the newly set channel from the first channel, and the second storage space is used to refer to a storage space associated with the second channel. The channel setting information includes information about the channel setting desired by the administrator for the added video camera or the storage space.

FIG. 5B illustrates an example of channel setting information according to addition of a video camera, and as shown in FIG. 5B, the channel setting information includes information about a newly formed video camera, a second storage space, and channel setting. do. That is, channel 5, which is a transmission path of the fifth video camera 275, is a channel setting of the fifth video camera 275 newly added and the folder 'outly alleyway' created in the third hard disk as the second storage space. In addition, channel 6, which is a transmission path of the sixth video camera 276, illustrates a case in which the sixth video camera 276 and the fourth hard disk are newly added, and the second storage space at this time is the fourth hard disk. Is set to. Therefore, the image data input through the channel associated with the fifth video camera is stored in the "outdoor alley" folder of the third hard disk.

Meanwhile, an example of channel setting information when the channel is changed will be described in detail with reference to FIG. 5C. As shown in FIG. 5C, the channel setting information includes a video camera to be changed and a second storage space. For example, instead of channel 2 (connecting the second video camera with the C drive of the second hard disk) in FIG. 4B, the channel of channel 7 connecting the second video camera 272 and the newly added new fifth hard disk Settings can be illustrated. In addition, channel 8 is used by the third video camera 273 and the existing second video camera 272 instead of the channel 3 (connection of the third video camera and the D drive of the second hard disk) in FIG. 4B. For example, the C and D drives, which are drive identifiers of the second hard disk, may be newly set as the second storage space. As can be seen in this embodiment, a plurality of storage spaces can be allocated to one channel.

This new channel formation can be changed and updated by the administrator at any time according to the needs of the administrator, and the signal processing regarding such channel setting is performed in the channel setting software of the channel setting means 210 described above.

Next, the management information is updated to associate the second channel with the second storage space based on the channel setting information and to include the management information with the information about the second channel and the second storage space (S520). Thereafter, the image data storage system 200 of the present invention continues the storage operation of the image data input through each channel in the storage space allocated to each channel.

6A to 6D are diagrams illustrating an example of performing a storage operation based on a storage condition of image data as another embodiment of the present invention.

6A is a flowchart of a storage operation based on storage conditions in another embodiment of the present invention.

First, the storage condition of the image data received by each channel is received from the manager (S610). The storage condition may be changed at any time according to a manager's request, and may include, for example, information about a storage time, information about a storage speed, and information about an overwrite period. In addition, the storage conditions can be input differently to the storage conditions of the image data for each channel can flexibly cope with the needs of the administrator.

6B is a diagram illustrating an example of a storage condition including information regarding a storage time, and the storage condition includes a storage start time and a storage end time. As illustrated in FIG. 6B, a first hard disk storing image data received through channel 1 illustrates a storage condition for storing only image data received from 8:30 to 18:30. In addition, the storage conditions may further include a storage period, for example, can be expressed on weekdays (Monday to Friday), year-round, etc., it is possible to appropriately cope with various storage conditions. In addition, based on the storage condition, the storage control means 250 controls to store the image data from the storage start time to the storage end time in the storage space associated with the channel. That is, according to the management information of FIG. 6B, the digital video recorder stores video data received from channel 1 on the first hard disk from 8 to 18:30 on weekdays.

FIG. 6C illustrates an example of a storage condition including information on a storage speed, in which the number of data frames per second stored in each storage space is recorded. The administrator can adjust the recording speed arbitrarily by changing the number of data frames per second. In general, if the recording speed is increased, the screen may be cut off, thereby providing a high-quality screen with a smooth image flow, while the data capacity of the image data is increased, and the usage speed of the storage space is increased proportionally. On the other hand, if the recording speed is reduced too much, the screen may be interrupted, resulting in considerable difficulty in viewing the screen. Therefore, according to the present invention, it is possible to reflect the characteristics of each channel to store at different storage rates per channel. The storage speed of the image data needs to be determined in consideration of the free storage area of the storage space and an appropriate disconnection phenomenon. Preferably 15 to 65 frames / second may be appropriate. As illustrated in FIG. 6C, the fifth hard disk storing the image data received through the channel 7 exemplifies a storage condition such that a storing process of storing the image data at a storage rate of 65 frames / sec is performed. Based on this storage condition, the storage control means 250 controls to store the image data in the storage space associated with the channel at the corresponding storage rate. In addition, according to another embodiment of the present invention, the image format and resolution of the image data stored per channel may be designated and stored in the corresponding storage space according to the format and the resolution.

FIG. 6D illustrates an example of a storage condition including information regarding an overwrite period, and the storage condition includes an overwrite period of each storage space. The administrator inputs an overwrite period by comprehensively determining the storage area of the storage space, the time to be stored, and the storage speed. As shown in FIG. 6D, the image data received through the channel 3 is stored in a folder 'outly alley' of the third hard disk, and is given an overwrite period of two weeks in consideration of a special place called an outly alley which has a high risk of crime. . Based on this storage condition, the storage control means 250 performs a storage process for the corresponding storage space for two weeks, and then performs an erase process on the first stored image data and an operation of storing new image data as an overwrite operation. .

Next, the storage condition input from the administrator is associated with the management information and updated (S620).

Therefore, according to the present invention, the storage conditions for storing the image data can be presented, and only the image data required by the administrator can be properly stored, thereby preventing unnecessary waste of the storage area, thereby efficiently storing the image data. can do.

Embodiments of the invention include a computer readable medium containing program instructions for performing various computer-implemented operations. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. The medium or program instructions may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. The medium may be a transmission medium such as an optical or metal wire, a waveguide, or the like including a carrier wave for transmitting a signal specifying a program command, a data structure, or the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like.

7 is an internal block diagram of a general purpose computer device that may be employed to construct an image data storage system in accordance with the present invention.

Computer device 700 includes one or more processors 710 connected to a main memory device including random access memory (RAM) 720 and read only memory (ROM) 730. The processor 710 is also called a central processing unit (CPU). As is well known in the art, the ROM 730 serves to transfer data and instructions to the CPU unidirectionally, and the RAM 720 typically transfers data and instructions bidirectionally. Used to. RAM 720 and ROM 730 may include any suitable form of computer readable media. Mass storage 740 is bidirectionally coupled to processor 710 to provide additional data storage capabilities, and may be any of the computer readable recording media described above. The mass storage device 740 is used to store programs, data, and the like, and is typically an auxiliary storage device such as a hard disk which is slower than the main memory. Certain mass storage devices such as CD ROM 760 may be used. The processor 710 may include one or more input / output interfaces, such as a video monitor, trackball, mouse, keyboard, microphone, touch screen display, card reader, magnetic or paper tape reader, voice or handwriting reader, joystick, or other known computer input / output device. 750 is connected. Finally, the processor 710 may be connected to a wired or wireless communication network through the network interface 770. Through this network connection, the procedure of the method described above can be performed. The apparatus and tools described above are well known to those skilled in the computer hardware and software arts.

The hardware device described above may be configured to operate as one or more software modules to perform the operations of the present invention.

While specific embodiments of the present invention have been described so far, various modifications are possible without departing from the scope of the present invention.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the claims below, but also by the equivalents of the claims.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above-described embodiments, which can be variously modified and modified by those skilled in the art to which the present invention pertains. Modifications are possible. Accordingly, the spirit of the present invention should be understood only by the claims set forth below, and all equivalent or equivalent modifications thereof will belong to the scope of the present invention.

As can be seen from the above description, according to the present invention, a video data storage system in a digital video recorder for setting a channel for receiving video data from a video camera and storing and managing the video data in a storage space allocated to each channel There is an advantage that can provide.

In addition, the present invention can provide a video data storage system in a digital video recorder that can remove the storage space from the device by a hot swap process without powering off, if a backup operation of the video data stored for each channel is required.

In addition, the present invention can provide a video data storage system in a digital video recorder that can flexibly respond to storage conditions for storing video data at the request of an administrator.

In addition, the present invention can provide a video data storage system in a digital video recorder to notify the administrator when a storage ratio of the storage space is more than a predetermined range.

Claims (13)

In the method of managing image data in a digital video recorder, Establishing a first channel between the digital video recorder and a first video camera connected with the digital video recorder; Associating a first storage space with the first channel, and maintaining information about the first channel and the first storage space as management information; Receiving first image data through the first channel; Storing the first image data in the first storage space associated with the first channel by predetermined storage control means based on the management information; Establishing a second channel between the digital video recorder and a second video camera connected with the digital video recorder; Associating a second storage space with the second channel, and maintaining information about the second channel and the second storage space as the management information; Receiving second image data through the second channel; And Storing the second image data in the second storage space associated with the second channel by the storage control means based on the management information. Including, The storage control means controls the overwrite of the first storage space associated with the first channel and the overwrite of the second storage space associated with the second channel to be performed independently. Image data management method The method of claim 1, Receiving channel setting information about a third channel and a third storage space to be associated with the third channel from an administrator; And Associating the third channel with the third storage space based on the channel setting information, and updating the management information such that the management information includes information about the third channel and the third storage space. More, The storage control means is configured to overwrite the first storage space associated with the third channel with the overwrite for the first storage space associated with the first channel and the second storage space associated with the second channel. Image data management method in a digital video recorder characterized in that the control to be performed independently of the overwrite. The method of claim 1, And the management information includes storage location information corresponding to the first storage space. The method of claim 3, wherein the storage location information, And information regarding any one or more of a physical hard disk drive, a logical drive identifier, and a storage folder associated with the first storage space. The method of claim 1, Receiving a storage condition of the image data received through the first channel from an administrator; And Associating the storage condition with the management information Image data management method in a digital video recorder comprising a. The method of claim 5, The storage condition includes a storage start time and a storage end time; The storing of the image data in the first storage space associated with the first channel may include: And storing the image data in the first storage space associated with the first channel from the storage start time to the storage end time. The method of claim 5, The storage condition comprises a storage rate, The storing of the image data in the first storage space associated with the first channel may include: And storing the image data in the first storage space associated with the first channel based on the storage rate. The method of claim 5, The storage condition comprises an overwrite period, The storing of the image data in the first storage space associated with the first channel may include: And overwriting the image data in the first storage space associated with the first channel at the interval of the overwrite period. The method of claim 5, The storage condition includes storage format information about a storage format of the image data, The storing of the image data in the first storage space associated with the first channel may include: And storing the image data in the storage format in the first storage space associated with the first channel. The method of claim 1, Notifying a warning message to an administrator when the image data stored in the first storage space is larger than or equal to a predetermined size; Image data management method in a digital video recorder, characterized in that it further comprises. The method of claim 10, Receiving a command regarding whether to continue storing the image data in response to the warning message from the manager; And Overwriting or hot swapping the first storage space in response to the command Image data management method in a digital video recorder, characterized in that it further comprises. A computer-readable recording medium having recorded thereon a program for executing the method of any one of claims 1 to 11. In the video data storage system in a digital video recorder, Channel setting means for setting a predetermined channel between the digital video recorder and a video camera connected to the digital video recorder; Camera interface means for receiving image data from the video camera via the channel; A management information database for storing management information including a channel identifier corresponding to the channel and a storage space identifier corresponding to a storage space for storing the image data received through the channel; A storage medium corresponding to the storage space; Storage condition input means for receiving a storage condition associated with storing the image data on the storage medium; And Storage control means for associating the storage condition with the management information and storing the image data received through the channel with reference to the associated management information in a storage medium corresponding to the storage space; Image data storage system in a digital video recorder comprising a.