KR20060030710A - Method for recording in dvr system - Google Patents

Abstract

The present invention records using a zoom magnification function in a DB system. To this end, the present invention, unlike the conventional method of performing only a recording of a motion detected by the DB system, uses a camera to record a predetermined region. The DVR system recording and recording to the storage medium checks whether a movement occurs in a specific region while performing a surveillance mode for recording a specific region, and when the movement occurs, the moving object is zoomed in and zoomed out. Control recording to the storage media, check whether the preset time is taken while recording by using the zoom magnification function, cancel the zoom magnification function if the preset time is taken, and capture the specific area set in the storage medium. Video by moving the video captured by the DVR system As this occurs, effective recording can be performed by using the zoom magnification function for a predetermined time.

Description

Recording method of DVR system {METHOD FOR RECORDING IN DVR SYSTEM}

1 is a block diagram of a DVR system suitable for recording a moving object using a zoom magnification function according to the present invention;

FIG. 2 is a flowchart illustrating a process of recording a moving object using a zoom magnification function in a DV system according to the present invention. FIG.

<Description of Symbols for Main Parts of Drawings>

102: camera 104: motion detection block

106: control block 108: decoding block

110: video codec block 112: storage medium

114: encoding block

The present invention relates to a method of recording using a zoom magnification function in a DB system, and more particularly, to a recording of a DB system suitable for recording on a storage medium using a zoom magnification function as a movement occurs in the DB system. It is about a method.                         

As is well known, a digital video recorder (DVR) system is a device that converts and stores video data inputted by an analog surveillance camera into a digital signal, and a video tape, which is a conventional storage medium, is a hard disk drive (HDD: Hard). Disc Drive) provides much more storage capacity and compresses / restores video with MPEG, so that media can be improved and a lot of data can be stored for a long time / high definition.

In addition, the DV system records a plurality of video signals inputted for each camera in a field or frame unit so that simultaneous recording and long-term surveillance recording of video signals inputted from multiple cameras can be performed using a hard disk drive. In the case of display, the video signal recorded on the hard disk drive, for example, the video signal of the camera selected by the system user is rearranged and displayed on the monitor so that the operator can check the surveillance video.

On the other hand, DV systems are very effective in areas with little or no activity, such as in office buildings or parking lots after business hours, but when a large number of movements are detected, the number of alarms to be transmitted increases, and motion detection It is not effective in the security zone where the alarm recording of the security system occurs frequently and the activity occurs normally.

In addition, the latest DV system does not proactively cope with the complex diversification of the modern facility environment. In particular, when the movement occurs, the service is linked to the security service of the security company or the police. In addition, when checking the image recorded in the storage medium, fortunately, even if the object is caught in the image, it provides only the full screen, so that the distance of the image is far from the object, making it difficult to accurately identify the object.

Accordingly, the present invention is to solve the above problems of the prior art, and provides a recording method of the DV system that can record for a predetermined time by using the zoom magnification function when a movement occurs in the DV system. There is a purpose.

In order to achieve the above object, the present invention provides a method of controlling recording in a DV system for capturing and recording a predetermined specific region on a storage medium, wherein the specific region is performed while performing a monitoring mode for recording the predetermined specific region. A process of checking whether a motion occurs in the controller, a process of enlarging and capturing a moving object by using a zoom magnification function and recording it on the storage medium, and a preset time during recording by using the zoom magnification function. Recording of the DVB system including checking whether the required time is required, and releasing the zoom magnification function if the predetermined time is required, photographing the preset specific area, and recording the recording on the storage medium using a general recording function. Provide a method.

The above and other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention described below with reference to the accompanying drawings by those skilled in the art.                     

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

A key technical aspect of the present invention is that unlike the conventional method of recording only the motion detected by the DV system, the specific region preset in the DV system which captures a predetermined specific region by using a camera and records it on a storage medium. During the monitoring mode to record the video, check whether the motion occurs in a specific area, and when the motion occurs, control the object to be recorded by using the zoom magnification function and record it on the storage medium, and record using the zoom magnification function. After checking whether the preset time is taken during the operation, the zoom-in function is canceled when the preset time is taken, and the image is recorded by recording a specific area set in the storage medium. The bar can be easily achieved.

1 is a block diagram of a DV system suitable for recording a moving object using a zoom magnification function according to the present invention, and includes a camera 102, a motion detection block 104, a control block 106, and a decoding block ( 108, video codec block 110, storage medium 112, and encoding block 114.

Referring to FIG. 1, cameras 102 are respectively installed at specific locations to capture an image of a specific area, and each image signal picked up here is transferred to the decoding block 108. In this case, the present embodiment has been described as only one camera as an example, but a plurality of cameras such as three, five, seven, nine, etc. may be applied depending on the need or use. .                     

Subsequently, the motion detection block 104 includes a motion detection sensor and the like, and detects motion for each image transmitted from the camera 102, for example, compares the previous image with the current image while storing the previous image on the time axis. The motion is detected by a method of comparing the before and after images, and the motion detection signal in each of these images is transmitted to the control block 106. Here, the present embodiment has been described as only one motion detection block 104 as an example, but a plurality of three, five, seven, nine, not one, in conjunction with the number of cameras to be installed Of course, the motion detection block can be applied.

In the control block 106, the overall control of the DV system is performed. The control block 106 provides the video signals captured by the plurality of cameras installed in a specific place to the decoding block 106, and decodes the video signals. The control signal is provided to the decoding block 106.

In addition, the control block 106 compresses the decoded video signal in a manner such as MPEG to store a control signal for recording and storing the video signal on the storage medium 112, for example, a hard disk drive, such as the video codec block 110 and the storage medium ( 112, and provides a control signal to the storage medium 112 to read and store the recorded video signal to the video codec block 110 during playback.

In addition, the control block 106 provides a control signal for decompressing the read video signal to the video codec block 110 by MPEG or the like, encodes the decompressed video signal, and displays the image through a monitor (not shown). A control signal for reproducing the signal is provided to the encoding block 114.

In addition, in the control block 106, when a motion detection signal is provided from the motion detection block 104 when a motion occurs in an image signal captured by the camera 102, the object to be moved using the zoom magnification function to the camera 102. Provides a control signal to enlarge the image of the camera, and provides a control signal to the camera 102 to cancel the zoom magnification function when a predetermined time (for example, 3 seconds, 5 seconds, etc.) is taken, and then a general recording mode. Control to perform.

Next, the decoding block 108 decodes the image signals picked up from the plurality of cameras in the control block 106 in accordance with the control signals provided from the control block 106 and transmits them to the video codec block 110.

The video codec block 110 compresses the video signal provided from the decoding block 108 in a manner such as MPEG according to the control signal provided from the control block 106 to store the compressed video signal in a storage medium 110, For example, it is transmitted to a hard disk drive or the like, and the decoded and stored digital video signal transmitted from the storage medium 110 is decompressed by a method such as MPEG and transmitted to the encoding block 114.

In addition, the storage medium 112 may be a large-capacity hard disk drive or the like for storing an image signal captured by a camera. The storage medium 112 may be MPEG or the like through the video codec block 110 according to a control signal provided from the control block 106. The compressed video signal is stored in a manner of passing through the video signal and transmitted to the video codec block 110 to reproduce the stored video signal.                     

Subsequently, the encoding block 114 encodes the video signal provided from the video codec block 110 to an arbitrary camera channel according to the control signal to reproduce the video signal through a monitor (not shown).

Next, a process of detecting a motion in an image captured by a camera in a DV system having the above-described configuration and recording a predetermined time using a zoom magnification function for the object to be moved will be described. .

2 is a flowchart illustrating a process of recording a moving object using a zoom magnification function in a DV system according to the present invention.

Referring to FIG. 2, in the recording mode of the DV system which compresses the image signal captured by the camera and stores it in a storage medium (step 202), the control block 106 moves the image signal captured by the camera 102. If this occurs, it is checked whether a motion detection signal is provided from the motion detection block 104 (step 204). Here, the movement can be realized by, for example, storing a previous surveillance image on the time axis and comparing the previous surveillance image with the current surveillance image.

In addition, when motion is detected by the motion detection sensor in the camera 102, the motion detection block 104 detects a corresponding motion detection signal, for example, a position value of the moving object (eg, a moving object). The motion detection signal including the block position block in-screen position value) is generated and provided to the control block 106.

As a result of the check in step 204, when a motion detection signal is provided from the motion detection block 104, the control block 106 receives a control signal for enlarging and capturing a target object generating motion using a zoom magnification function. Provided to the camera 102 to image the moving object (step 206).

In addition, according to the control signal provided from the control block 106, the image signal photographed using the zoom magnification function is decoded through the decoding block 108, and compressed through a video codec block 110 in a manner such as MPEG. This is stored in the storage medium 112, for example, a hard disk drive or the like (step 208).

Next, the control block 106 checks whether the time required for imaging the moving object using the zoom magnification function becomes a predetermined value (for example, 3 seconds, 5 seconds, etc.) (step 210).

As a result of the check in step 210, if the time required does not become a preset value, the moving object is continuously captured by using the zoom magnification function and stored in the storage medium 112, and the required time is a preset value. In this case, the control block 106 releases the zoom magnification function by providing a control signal to the camera 102 (step 212).

Subsequently, the video signal captured at the original size through the camera 102 is decoded through the decoding block 108 in accordance with the recording control signal provided from the control block 106, and the video codec block 110 is used to decode the video signal. A normal recording mode which is compressed and stored in the storage medium 112 (step 214).

Therefore, when a movement occurs in the image signal captured by the DB system, the moving object may be recorded for a predetermined time by using the zoom magnification function.

As described above, the present invention is different from the conventional method of performing recording only for the motion detected by the DV system, and moves in a specific region in the DV system which records a predetermined specific region by using a camera and records it on a storage medium. When this occurs, the moving object is captured by a zoom magnification function and recorded for a predetermined time in a storage medium, so that the image captured by the DV system is used for a predetermined time as a motion occurs. Effective recording can be performed on a moving object. In addition, it can be effectively applied to implement a security system by performing effective zoom recording on the movement occurring in a specific area.

Claims (1)

As a method of controlling recording in a DV system which captures a predetermined specific region and records the recording in a storage medium, Checking whether a movement occurs in the specific region while performing the monitoring mode for recording the preset specific region; When the movement occurs, zooming in and capturing a moving object with a zoom magnification function and recording the same on the storage medium; Checking whether a predetermined time is taken while recording using the zoom magnification function; Canceling the zoom magnification function when the preset time is taken, and capturing the preset specific area and recording the recording on the storage medium using a general recording function. Recording method of the DV system including a.

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