KR100750827B1 - Digital vedio recorder capable of creating another qualification for each user - Google Patents

Abstract

A digital video recorder is provided to prevent private images of users from being leaked out by setting authorization according to the users and performing watching and searching functions within an allowance range according to the users based on the set authorization. A signal inputting unit(130) receives an image photographed by a camera, a voice, text data, and an event signal. An authorization setting unit(115) creates authorization information according to users and stores the created information in an authorization information storing unit. A controlling unit(120) checks an authorization of a logged-in user based on the authorization information according to users stored in the authorization information storing unit. The controlling unit(120) performs watching, recording, and searching functions within an allowance range according to an operative command. A data storing unit stores the image, the voice, the text data, and the event signal when the controlling unit(120) performs the recording function. An output unit(160) outputs data inputted from the signal inputting unit or the data storing unit through a monitor or a speaker when the controlling unit(120) performs the watching and searching functions.

Description

Digital Vedio Recorder Capable of Creating another qualification for each user}

1 is a block diagram schematically showing the configuration of a digital video recorder according to an embodiment of the present invention;

2 is a table showing authority information for each user according to an embodiment of the present invention.

<Explanation of symbols for main parts of the drawings>

100: operation unit 110: user storage unit

115: authority setting unit 120: control unit

121: monitoring control unit 123: recording control unit

125: search control unit 127: event control unit

129: input control unit 130: signal input unit

132: video input unit 134: event input unit

136: character input unit 140: timer

150: data storage unit 160: output unit

165: remote output unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to digital video recorders, and more particularly, to a digital video recorder and a method of controlling the same, capable of differently setting authority to control for each user.

You can install a digital video recorder (DVR) that records cameras and captured images or displays them in real-time in large security units such as large residential houses, museums, or banks, to detect accidental intruders or alert you to emergencies. .

As the demand for such an unmanned security system increases, the development of security equipment is active, and the number of cameras installed accordingly is increasing. As the number of cameras increase and the availability of the security equipment expands, the installation of cameras increases in places where personal privacy is required.

In addition, with the development of digital video recorders (DVR), not only the video input through the camera but also the occurrence of an event can be detected and an additional function can be performed accordingly. Digital video recorders, which have recently been used as complements to CCTV, are equipped with motion detection functions, sensor and connection recording, auto pan / tilt / zoom / control functions, and image enlargement and editing. It has various selection menu functions such as functions, and it has a function to permanently store data in a hard disk driver. Searching by time, date, camera, and event, real-time monitoring from a distant place, search, backup, and camera control are also being widely used.

However, as operators of surveillance equipment such as digital video recorders are shifted, problems such as avoiding administrative responsibility for the surveillance equipment or leakage of important images may occur. In addition, with the development of remote control, it is possible to use the monitoring and search function from a remote location, and the captured image may be exposed to the general public through the Internet.

Therefore, the security of the security equipment itself is becoming important so that images captured by the security system do not leak to others.

SUMMARY OF THE INVENTION The present invention is derived from such a background, and aims to clarify the management status of the digital video recorder by differentiating the access authority of the digital video recorder for each individual, and to increase the reliability in the operation of the security system.

Furthermore, an object of the present invention is to reinforce security of a surveillance screen captured by a digital video recorder and solve adverse functions such as invasion of privacy.

The digital video recorder according to an aspect of the present invention for achieving the above object receives an ID and password information from the user to authenticate and log in by comparing the information with the already stored information, and grants access rights to each function differently for each user. It checks the authority of the logged-in user based on the authority information for each user, and performs the monitoring / recording / search function within the allowed range according to the input operation command.

According to the present invention according to this aspect of the present invention, by assigning an ID to each individual, it is possible to clarify the state of management so that the responsible person can be surely determined in case of a malfunction, for example, to enhance the security of management of the monitoring and recording function. As a result, the reliability of the security system can be improved.

The digital video recorder according to the present invention checks the authority of the logged-in user to determine whether to allow the monitoring function for each channel, and outputs only the image input to the allowed channel to the output unit. Accordingly, in the surveillance function, it is possible to enhance the security of the captured image by not outputting the captured image to an unauthorized user, and to protect the privacy by setting only the image of the set channel. have.

In addition, by determining whether to allow the search function by search criteria by referring to the authority information for each user, and searching and outputting the corresponding image file from the data storage unit according to the allowed criteria, only the user who has been granted the authority in the search function It is possible. At this time, even users with search permission can search only for allowed channels, so privacy can be expected in search as well as surveillance video.

According to a characteristic aspect of the present invention according to the present invention receives an event occurrence from the outside, when the event is input by notifying the event occurrence according to the type of the event or by performing a set additional function operation, emergency situation There is an effect that can be announced more quickly.

 The digital video recorder according to the present invention performs remote monitoring and retrieval function within the permitted range by referring to the user-specific authority information according to the input operation command, so that the security of the captured image can be secured even in the remote monitoring and retrieval function There is an advantage to strengthen. In addition, since only the allowed channels can be searched for monitoring and searching at a remote location, privacy protection can be expected at monitoring and searching at a remote site.

According to a further aspect of the present invention, if there is no input of an operation command from the user for a predetermined time after logging in, the logged-in user is logged out. Accordingly, in the absence of a normal user, monitoring and recording function setting can be manipulated by a malicious user, or output of a captured image can be prevented.

The foregoing and additional aspects of the invention are described in detail below to enable those skilled in the art to readily understand and reproduce through the embodiments described with reference to the accompanying drawings.

1 is a block diagram schematically illustrating a configuration of a digital video recorder according to an embodiment of the present invention. As shown, the digital video recorder according to the present invention includes a signal input unit 130 for receiving images, audio, text data, and event signals captured from a camera, and an authority information storage unit 110 for storing authority information for each user; In addition, the authority setting unit 115 generates user-specific authority information to which the user has different authority for each function and stores the authority information in the authority information storage unit, and logs in based on the authority information for each user stored in the authority information storage unit 110. The controller 120 for checking the authority of the registered user and performing a monitoring / recording / searching function within the permitted range according to the input operation command, the image and audio captured by the controller 120 when the recording function is performed, Data storage unit 150 for storing text data and event signal files, and the control unit is input from the signal input unit 130 or the data storage unit 150 when the monitoring and searching function is performed. An output section 160 for outputting an image to the monitor.

For example, the operation unit 100 may be mounted on the front panel of the digital video recorder, or may be implemented as an external input device such as a remote controller, a keyboard, or a mouse. In the present embodiment, the operation unit 100 receives an operation command signal from the user.

The signal input unit 130 may include an image input unit 132 that receives an image captured by a camera, a voice input unit that receives an audio signal, a text input unit 136 that receives text information, and an event input unit 137 that receives an event signal. ). In the present embodiment, the signal input unit 130 is a format suitable for processing the input analog / digital video signal or analog / digital audio signal or text data or event data or a combination thereof in the digital video recorder according to the present invention. Convert. The text input unit 136 may be implemented to be connected to another interface device to receive text data from another device. For example, the sales data can be input together with the floor data in the elevator or the POS.

The image input unit 132 may be implemented through an image processing chip such as a MUX chip. In the present embodiment, the image input unit 132 may normally input 4 to 16 channels. However, it is not limited thereto. The image input unit 132 may receive and synchronize images captured by a plurality of cameras including a normal image input buffer, and perform vertical / horizontal direction deduction through a scaler. Thereafter, the image data input from the plurality of cameras may be multiplexed. In other words, images captured by a plurality of cameras may be output by a single image, or images generated by the plurality of cameras may be multiplexed to generate and output one frame as a split screen. In the present embodiment, the image input unit 132 converts the input image data into a digital signal form and outputs the format in a format that can be used by the controller 120. For example, using the RGB or YUV format, or by compressing according to an algorithm such as MPEG (Moving Picture Experts Group) to output in a format suitable for storage in a data storage unit 150, such as a hard disk.

The authority information storage unit 110 is preferably implemented as a memory that can be read and written by the user. In one embodiment, the authority information storage unit 110 may be implemented as a memory device such as a flash memory, an electrically erasable programmable read-only memory (EEPROM), or a hard disk. In the present embodiment, the authority information storage unit 110 stores the ID for each user and a password corresponding thereto. User ID and password is preferably set to be changed by each user. In addition, the authority information storage unit 110 according to the present invention stores authority information for each user to which the user has different access authority for each function. 2 is a table showing authority information for each user according to an embodiment of the present invention. As shown in FIG. 2, an ID and password, an accessible channel, and an access right for each function may be designated and stored for each user. In FIG. 2, for example, AA may be a super administrator. At this time, as shown, the super administrator AA is authorized to control all the functions of the digital video recorder.

The permission setting unit 115 may be implemented as a microprocessor chip and a program embedded therein. The authority setting unit 115 stores the authority setting unit 110 according to the information input from the manipulation unit 100. At this time, set the access authority for each user ID and save. The authority setting unit 115 may be implemented to update data stored in the authority information storage unit 110 according to information input from the manipulation unit 100.

The controller 120 may be implemented with a conventional microprocessor chip for controlling the overall operation of the digital video recorder and a program embodied therein. In the present embodiment, the controller 120 authenticates the ID and password of the user received through the operation unit 100 with the information stored in the authority information storage unit 110. If authentication is performed, login processing is performed to check whether the user is an operation command within the accessible range, and only the operation command within the authority range of the logged-in user is processed. These commands include, for example, setting changes for the overall digital video recorder, alarm output function, turning on / off the recording function, launching a search program, controlling the camera's PTZ, remote control of image color, and power on / off. There is a function. However, the present invention is not limited thereto and is interpreted to cover obvious modifications.

As described above, the data storage unit 150 may be implemented as a hard disk driver (HDD). In the present embodiment, the data storage unit 150 may store the image, audio, text, and event data captured by the image input unit 132 and output the stored data according to a user's manipulation.

The output unit 160 reproduces and outputs video, audio, text, and event data through a display device such as a cathode-ray tube (CRT) monitor. The output unit 160 may include a decoder to decompress the compressed image file stored in the data storage unit 150. Then, the decompressed digital signal is converted into an analog signal. In addition, the output unit 160 changes the format suitable for the output device. In this embodiment, the input YUV format signal is converted into an RGB signal and displayed. Image processing of the output unit 160 is well known. In the present embodiment, the output unit 160 outputs video, audio, text, and event data captured by a camera of a channel selected and set by the user in real time, or according to a user's operation command input to the control unit 100. The data stored in the data storage unit 150 is output.

In addition, the digital video recorder according to the present invention is a voice input unit for receiving not only a video signal but also a voice signal, and a voice signal for converting a voice input to the voice input unit into a signal suitable for storing or a form suitable for output through a speaker. It includes a processing unit. In other words, it is implemented not only to photograph, record and output an image, but also to record and output an image signal and an audio signal at that time. The speech signal processing unit is a known configuration that typically encodes and stores a speech signal, decodes the stored speech, and outputs the audible sound through a speaker.

In addition, the digital video recorder according to the present invention outputs text data along with an image or outputs event input information at the time of outputting an image, so that the user can easily grasp the situation by performing a function of providing additional information simultaneously with the image. Is implemented.

The digital video recorder according to the present invention sets authority for each function for each function, and allows only authorized users to operate within the scope, so that the management status of the digital video recorder can be clearly identified, for example, to determine the responsible person in case of malfunction. can do. This has the effect of improving the reliability of the monitoring and recording functions of the system.

The control unit 120 of the digital video recorder according to the characteristic aspect of the present invention checks the authority of the logged-in user to determine whether to allow the monitoring function for each channel, and outputs the image input to the allowed channel to the output unit. The control unit 121 is included.

The monitor controller 121 checks whether the user who is logged in has a monitor right when a command for executing a monitor function is input from the manipulation unit 100. The monitoring controller 121 may check whether the monitoring authority of the image captured by each channel is checked according to the authority information for each user. For example, if the place where 3, 4, 8 channel cameras are installed is a space where privacy should be guaranteed for users BB00, 011CC, and DD55, only the user has the authority to monitor the images taken by the camera installed in the place. It can be set to have. Therefore, according to the present invention, it is possible to prevent the image taken in the space that requires privacy to be exposed to others.

In addition, the control unit 120 of the digital video recorder according to the present invention determines whether to allow the search function for each search criterion with reference to the user-specific permission information, and stores the corresponding data file from the data storage unit 150 according to the allowed criteria. And a search controller 125 for searching and outputting the output unit 160.

The search controller 125 checks information on whether the logged-in user has the authority for the search function, whether the corresponding channel is a channel allowed to the logged-in user, and determines whether to perform the search function according to the operation command. According to the search function of the digital video recorder, the data can be searched according to criteria such as event, recorded date, and text stored corresponding to the image among the data files stored in the data storage unit 150. If it is determined that the user has a search right, the data files stored in the data storage unit 150 are searched and extracted according to the search criteria as described above. The extracted video, audio, text, and event information are output to the monitor and the speaker through the output unit 160. At this time, the search control unit 125 may check whether the currently logged in user has a search right for each channel and search only an image of a channel to which the right is granted. The search controller 125 restricts the output of the image through the output unit 160 when the logged-in user does not have a search right.

The control unit 120 of the digital video recorder according to the present invention includes a recording control unit 123 which sets or blocks the captured image to be recorded in the data storage unit 150 by checking the authority of the logged-in user.

The recording control unit 123 checks the authority of the logged-in user and changes the recording setting state according to the user's operation command or blocks the captured image from being recorded in the data storage unit 150 only when the user has the authority. . In the present embodiment, the recording controller 123 performs a deletion / correction operation on a part of the captured image before the captured image is recorded in the data storage unit 150. The recording controller 123 may determine a portion of the video not to be stored and may remove the portion. According to an embodiment, before all of the captured images are recorded in the data storage unit 150, a portion of the captured images in the area where privacy is to be protected may be processed as a black screen. Accordingly, the video of the part that may invade privacy can be basically prevented from being output by others by blocking recording, thereby avoiding the problem of privacy invasion.

On the other hand, if the user does not have the authority to set / block the recording, the recording controller 123 may output an error message without performing a function for an operation command. That is, the recording can be prevented from being blocked by the malicious user.

In addition, the control unit 120 checks the user's authority and controls the operation of the signal input unit 130 according to a user's operation command input through the operation unit 100 with respect to a function within the user's authority. It includes.

The input controller 129 checks whether the logged-in user has a setting authority in changing the resolution, frame rate, etc. of the input image. If the logged-in user has a setting authority, the state of the image input unit 132 as described above may be changed according to an input operation command. In the present embodiment, when the user has the authority to set, the input control unit 129 may set the output state of the captured image, for example, whether to be multiplexed or not. In addition, alarm output or emergency recording can be operated by user.

According to another aspect of the present invention, the digital video recorder according to the present invention further includes an event input unit 134 for receiving the signal input unit 130 from the outside whether the event occurs, the control unit 120 is the event input unit 134 The event control unit 127 further includes an event controller 127 that notifies the occurrence of the event to the outside or performs a set additional function operation according to an input event type.

The event input unit 134 determines whether an event set by a user is detected. For example, the event may be a motion detection, a voice input detection, a door open detection, an abnormality detection of a video signal, an alarm detection, or a specific character input detection in the captured image. In the present embodiment, the event input unit 122 may be implemented as a sensor, or may be implemented to determine a change by comparing the captured image periodically by pixel unit. The event input unit 134 outputs a signal indicating that they are detected when such an event occurs.

The event controller 127 checks whether the logged-in user has a setting authority in setting the corresponding operation according to the event state detected by the event input unit 134. For example, when an intruder's movement is detected in the captured image, the camera automatically changes the shooting mode to perform zooming, call an administrator, or set an alarm. Check whether the logged-in user has permission to set. When it is determined that the user has the authority to set, the setting of the corresponding event can be changed.

In setting the operation of the digital video recorder by the event, by giving different rights to the user, there is an effect that can more clearly clarify the management state of the security equipment.

The digital video recorder according to an aspect of the present invention includes a remote output unit 165 that performs a remote monitoring and searching function within an allowed range with reference to the user-specific authority information according to an input operation command.

The remote output unit 165 includes a communication unit and outputs the output unit 160 to a remote place through a communication network such as a LAN / PSTN. The image to be output to the output unit 160 is converted into a format suitable for transmission to a communication network and transmitted to a remote location. In the present embodiment, the remote output unit 165 may be configured to convert the image data to be output to an MPEG signal for transmission.

The monitoring control unit 121 and the search control unit 125 of the digital video recorder according to the present invention check whether the function is within the authority of the user who is logged in even in the remote monitoring and remote retrieval function through the remote output unit 165, It is preferable to check and output whether the image is input and photographed by the authorized channel.

According to another aspect of the present invention, the digital video recorder according to the present invention further includes a timer 140 for checking a time when no operation command is input in the logged-in state, and the predetermined time after the control unit 120 logs in. If there is no input of the operation command during the logout process characterized in that the user.

The timer 140 may be implemented as a logic circuit that operates by a clock signal to perform a simple counter function, or may be implemented as a dedicated chip that functions as a timer itself. In the present embodiment, the timer 140 counts the time during which there is no input of the operation signal after the user logs in.

The controller 120 receives a count value during a state in which there is no operation signal after the user logs in from the timer 140, and if the value is more than a predetermined time, the controller 120 forcibly logs out the user.

As a result, even if the user leaves the room while forgetting to log out, the malicious user can prevent the surveillance and recording function settings from being manipulated.

As described in detail above, according to the present invention, by assigning an ID and a password for each individual, the responsibility for the operation of the digital video recorder becomes clear, thereby overcoming security vulnerabilities due to the absence of a system operator and the management state. For example, it is possible to reliably determine the responsible person in case of malfunction, thereby improving the reliability of the security system itself.

In addition, according to an additional aspect of the present invention, by designating a camera that can be monitored for each user, granting authority, and checking each user when performing the monitoring / search function, performing a monitoring / search function only within an allowed range to a malicious user. There is an effect that can prevent the leakage of images or invasion of privacy.

In addition, according to the present invention, since the recording function can be set by the authorized user by checking the user's authority at the time of performing the recording function, the recording can be prevented from being blocked by the malicious user.

Furthermore, according to the present invention, if a user does not input a control signal for a predetermined time after logging in, the user is logged out. This has the effect of preventing the malicious user from operating the monitoring and recording function settings.

The present invention has been described above with reference to preferred embodiments, but is not limited thereto, and is interpreted by the appended claims, which are intended to cover many modifications that will be apparent to those skilled in the art without departing from the scope of the present invention. Should be done.

Claims (8)

A signal input unit configured to receive an image, audio, text, or event signal photographed from a camera; An authority information storage unit for storing authority information for each user; An authority setting unit which generates authority information for each user who has different authority for each function and stores the authority information for each user and stores the authority information in the authority information storage unit; A controller for checking the authority of the logged-in user based on the authority information for each user stored in the authority information storage unit, and performing a monitoring / recording / search function within an allowed range according to the input operation command; A data storage unit for storing the image or voice, text data, and event information data captured by the control unit when the recording function is performed; An output unit for outputting data input from the signal input unit or the data storage unit through a monitor or a speaker when the control unit performs a monitoring and searching function; Digital video recorder comprising a. The method of claim 1, wherein the control unit: And a monitoring controller which checks the authority of the logged-in user and determines whether to permit the monitoring function for each channel, and outputs data input to the allowed channel to the output unit. The method of claim 1 or 2, wherein the control unit: And a search control unit for determining whether to allow a search function for each search criterion with reference to the authority information for each user, and searching for a corresponding data file from the data storage unit and outputting the data file to the output unit according to the allowed criteria. Digital video recorder. The method of claim 1 or 2, wherein the control unit: And a recording control unit which checks and executes the authority of the logged-in user when the captured image, audio, and text data is recorded or set to be recorded in the data storage unit. The method of claim 4, wherein the recording control unit: And deleting / correcting a part of the captured image before the captured image, sound, and text data is recorded in the data storage. The method of claim 4, wherein the signal input unit: The control unit may further include an event input unit configured to receive an event occurrence from the outside, and the control unit may include: When the event is input from the event input unit according to the type of event is input according to the type of the event control unit for notifying the logged-in user to the logged-in user or externally or perform a set additional function operation Video recorder. 6. The digital video recorder of claim 5 wherein: A remote output unit configured to perform a remote monitoring and searching function within an allowed range by referring to the user-specific authority information according to an input operation command; Digital video recorder comprising a. The device of claim 1 wherein the digital video recorder device is: A timer for checking a time when no operation command is input while logged in; Further comprising, the control unit: And a logout process of the user if no operation command is input for a predetermined time after login.

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