KR101352860B1 - Multi stream system and multi stream display method thereof - Google Patents

Abstract

The present invention relates to a multi video system and a multi video transmission method using the same. In the present invention, it is possible to simultaneously provide, on a monitor screen, analog data and various digital data (HD compression video for recording, HD compression video for live, and HD compression video for capture) in a network video recorder (NVR) through SLOC technology, and to request a high definition live screen according to a situation from camera equipment when playing a live screen in the network video recorder. In addition, it is possible to differently set the resolution of a live video according to a segmentation mode such that rapid display and high definition display can be achieved and then more efficient monitoring can be achieved. [Reference numerals] (100) HD camera; (200) Coaxial cable; (400) Display unit; (AA) Analog video; (BB) HD compression video for recording; (CC) HD compression video for live; (DD) HD compression video for capture; (EE) Control signal; (FF) Setting change signal; (GG) Audio signal

Description

Multi image system and multi image display method using the same

The present invention relates to a multi-image system and a multi-image display method using the same. More particularly, a multi-image system and a multi-image using the same and a plurality of digital data can be simultaneously transmitted and displayed through a single analog coaxial cable It relates to a display method.

Korean Patent No. 10-1000393 (hereinafter, referred to as a prior art) installs a control program for controlling camera control and image display in a server connected to a closed circuit television (CCTV) system, and easily controls each camera using a control program in the server. There is described a technology for a CCTV system that can perform video surveillance and control, and the local user can control the CCTV by connecting to the server through his terminal (that is, a personal computer).

The prior art focuses on the remote control of the camera, rather than improving the resolution of the video signal captured by the camera. Therefore, no matter how convenient the remote control of the camera there is a problem that the efficiency of surveillance is reduced if the watcher sees a low resolution image.

Currently, closed-circuit television (CCTV) systems are improving screen resolution and transmission methods according to the performance of cameras and communication equipment.

First, existing analog cameras generate and output composite video baseband signal (CVBS) signals that can be transmitted up to 300 meters using coaxial cable.

Second, digital cameras support a high-definition serial digital interface (HD-SDI) that can be used to transmit uncompressed high-definition digital video over coaxial cable at 1.5 Gbps, with cable distances of up to 100 meters at these high transmission rates. to be.

Third, IP-based high definition cameras transmit compressed high definition digital video.

A closed circuit television (CCTV) system that supports high-definition serial digital interface (HD-SDI) using a digital camera is called an HD-SDI CCTV system, and a closed circuit television (CCTV) system that uses an IP-based high definition camera is HD-IP. It is called CCTV system. Currently, the HD CCTV system in the industry is collectively referred to as including the HD-SDI CCTV system and HD-IP CCTV system.

HD CCTV systems have many advantages, but they also have disadvantages. For example, HD-SDI CCTV systems have a short transmission distance of 100 meters over coaxial cable, limited maximum resolution, and only one-way communication. In addition, HD-IP CCTV system requires the use of twisted pair cable, not coaxial cable, and requires new line construction, and requires 100Mbps Ethernet, which requires additional materials such as HUB / ROUTER, and needs retraining for the user.

However, in order to increase the efficiency of surveillance and security through high-resolution video, it is urgent to use HD CCTV system. Therefore, there is a need for a new closed circuit television (CCTV) system that can overcome all the shortcomings of existing HD CCTV systems.

Korea Patent Registration No. 10-1000393 (Registration date 2010.12.06)

The present invention has been invented to solve the above problems, a multi-image system that can simultaneously provide analog data and a plurality of digital data on the monitor screen in the network video recorder (NVR) through the SLOC technology and multiple using the same It is an object of the present invention to provide a video display method.

Another object of the present invention is to provide a multi-image system and a multi-image display method using the same, which can request a camera device a high-definition live screen according to the situation when the live screen playback in the NVR.

Another object of the present invention is to provide a multi-image system and a multi-image display method using the same to enable fast display and high-definition display by differently setting live image quality according to a split mode.

 Another object of the present invention can reduce the cost required to replace the analog CCTV system or the HD-SDI CCTV system using the existing analog coaxial cable with the HD-IP CCTV system, and minimize the disconnection of the monitoring system when replacing the system A multi-image system and a multi-image display method using the same are provided.

Still another object of the present invention is to eliminate the inconvenience of having to retrain the user without the need for new track construction even if the analog CCTV system or the HD-SDI CCTV system using the existing analog coaxial cable to HD-IP CCTV system There is provided a multiple image system and a multiple image display method using the same.

A multi-image system according to an embodiment of the present invention for achieving the above object, an HD camera for recording an analog image, recording HD compressed image, live HD compressed image, capture HD compressed image; A network video recorder (NVR) connected to the HD camera through an analog coaxial cable and storing or displaying an image transmitted from the HD camera and requesting a change of a setting related to image display from the HD camera; It includes a display unit for displaying the image transmitted from the network video recorder (NVR).

According to one or more exemplary embodiments, a multi-image display method includes: capturing an external image through an HD camera; Receiving data through an analog coaxial cable connected to the HD camera in a modem; Analog data among the data received by the modem is analog live display through an analog display device, or digital live display through a high-definition digital display device through an analog video decoder unit, and digital data among the data received by the modem is a live compressed image. High-definition digital live display through a decoder, and the HD compressed video for recording of the data received by the modem is stored through the storage unit, or stored and stored in the high-definition digital display of the recorded video through the recording compressed video decoder when necessary Include.

The multi-image system and the multi-image display method using the same have the following effects.

First, by reusing the existing analog coaxial cable and associated equipment, it is possible to reduce the cost of replacing the analog CCTV system or the HD-SDI CCTV system that used the existing analog coaxial cable with the HD-IP CCTV system. Minimization of the monitoring system can be minimized.

Second, even if the analog CCTV system or the HD-SDI CCTV system, which used the existing analog coaxial cable, is replaced with the HD-IP CCTV system, new track construction is not required and the inconvenience of having to retrain the user can be eliminated.

Third, through the SLOC technology, the network video recorder (NVR) can provide analog data and multiple digital data on the monitor screen at the same time, and when the live screen is played back on the NVR, it is possible to request high-definition live screen according to the situation to the camera equipment. .

Fourth, the live image quality can be set differently according to the split mode to enable fast display and high quality display.

1 illustrates a multiple imaging system according to a preferred embodiment of the present invention.
2 shows a detailed structure of an HD camera applied to the present invention.
3 shows a detailed structure of an NVR applied to the present invention.
4 and 5 illustrate a multi-image system and a multi-image display method using the same when the NVR is in full screen mode, respectively.
6 and 7 illustrate a multi-image system and a multi-image display method using the same when the NVR is in the 4-split screen mode, respectively.
8 and 9 illustrate a multi-image system and a multi-image display method using the same when the NVR is in 9-split screen mode, respectively.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout.

"SLOC" herein is a device that uses a secure link through an analog coax. SLOC modems generally have upstream and downstream signals to the camera. The SLOC modem provides high definition downstream of the first passband ("HD"), upstream and control signals of the second passband, and baseband signal (CVBS).

"NVR" is a network video recorder, which is a device that automatically sets an IP address and communicates with a camera simply by connecting an analog coaxial cable to the camera.

1 shows a multiple imaging system according to a preferred embodiment of the present invention.

Referring to FIG. 1, a closed circuit television system capable of transmitting a high resolution digital video signal compressed through an analog coaxial cable according to an embodiment of the present invention is largely provided through an HD camera 100 and an analog coaxial cable 200. It includes a network video recorder (NVR) 300 to be connected and a display unit 400 for displaying an image provided from the NVR (300).

The HD camera 100 transmits the analog video, the HD compressed video for recording, the HD compressed video for live, and the HD compressed video for capturing through the analog coaxial cable 200 to the NVR 300.

The NVR 300 may store or live display four types of images transmitted from the HD camera 100, that is, an analog image, a recording HD compressed image, a live HD compressed image, and a capture HD compressed image. In this case, the setting change for the resolution, frame rate per second, and bitrate for each image may be realized through a predetermined protocol with the HD camera 100.

2 shows a detailed structure of the HD camera 100.

Referring to FIG. 2, the HD camera 100 includes a lens unit 102, an image sensor unit 104, a camera processor 106, an audio input unit 108, an audio output unit 110, a modem 112, and storage. The unit 114 and the external control interface unit 116.

The lens unit 102 of the HD camera 100 receives an external image and transmits the image to the image sensor unit 104. The image sensor unit 104 transmits the data signal received from the lens unit 102 to the camera processor 106. The audio input signal input from the audio input unit 108 is also transmitted to the camera processor 106, and the camera processor 106 outputs the audio signal through the audio output unit 110.

The camera processor 106 encodes the image signal and the audio signal transmitted from the image sensor unit 104 and the audio input unit 108 into a compressed image. Then, the data encoded as the compressed image is transmitted to the analog coaxial cable through the modem 112 or stored in the storage unit 114. The camera processor 106 may change the settings of the camera device according to a setting change request input through the external control interface 116. The external control interface unit 116 is an interface used when directly controlling the HD camera 100. The external control interface unit 116 receives an IR receiver, an RS-485 control signal, and an optical control signal.

3 shows a detailed structure of the NVR 300.

Referring to FIG. 3, the NVR 300 includes a modem 302, an analog video decoder 304, a display processor 306, a network video recorder processor 308, and a storage 310.

The modem 302 receives data through an analog coaxial cable connected to the HD camera. Among the data received by the modem 302, analog live display is realized through an analog display device, or digital live display is realized through a high-definition digital display device through an analog video decoder 304.

Digital data among the data received by the modem 302 can be displayed live or stored or reproduced if necessary. That is, digital data among the data received by the modem 302 may be displayed in high quality digital live display through a live compressed video decoder. Alternatively, the HD compressed video for recording among the data received by the modem 302 may be stored through the storage unit 310 or may be stored in a high quality digital display of the recorded video through the compressed video decoder for recording when necessary. .

As such, the NVR 300 is advantageous for more efficient monitoring because the analog live display, the high definition digital live display, and the high definition digital recorded image are all reproduced at once.

4 and 5 illustrate a multiple image system and a multiple image display method using the same when the NVR 300 is in the full screen mode, respectively.

4 and 5, when the NVR 300 is set to the full screen mode, a change request for a live HD compressed image from the HD camera 100 is requested for high quality display (S500).

The HD camera 100 changes the resolution of the live HD compressed video as requested and transmits the resolution to the NVR 300 (S502).

As described above, the live HD compressed image transmitted with the resolution adjusted upward toward the NVR 300 is displayed through the display unit 400 (S504).

As described above, in the present invention, more reliable monitoring is possible by changing the resolution of the image currently being displayed live according to the needs of the user.

6 and 7 illustrate a multi-image system and a multi-image display method using the same when the NVR 300 is in the 4-split screen mode, respectively.

6 and 7, when the NVR 300 is set to the 4-split screen mode, the HD camera 100 requests a change to the live HD compressed video for high quality display and fast display (S600). ).

The HD camera 100 changes the resolution of the live HD compressed video as requested and transmits the resolution to the NVR 300 (S602).

As described above, the live HD compressed image transmitted with the resolution adjusted upward to the NVR 300 is displayed on a quad screen through the display unit 400 (S604).

As described above, in the present invention, by changing the resolution of the image currently being displayed live on the four-split screen according to the needs of the user, more reliable monitoring is possible.

8 and 9 illustrate a multi-image system and a multi-image display method using the same when the NVR 300 is in 9-split screen mode, respectively.

8 and 9, when the NVR 300 is set to the 9-split screen mode, the HD camera 100 requests a change to the live HD compressed image for high quality display and fast display (S700). ).

The HD camera 100 changes the resolution of the live HD compressed video as requested and transmits the resolution to the NVR 300 (S702).

In this way, the live HD compressed image transmitted with the resolution adjusted upward to the NVR 300 is displayed on a nine-split screen through the display unit 400 (S704).

As described above, in the present invention, by changing the resolution of the image currently being displayed live on the nine-split screen according to the needs of the user, more reliable monitoring is possible.

As described above, according to the present invention, by reusing the existing analog coaxial cable and associated equipment, it is necessary to replace the analog CCTV system or HD-SDI CCTV system that used the existing analog coaxial cable with HD-IP CCTV system. Costs can be reduced and monitoring system disconnection can be minimized.

In addition, even if the analog CCTV system or the HD-SDI CCTV system using the existing analog coaxial cable is replaced with the HD-IP CCTV system, there is no need for new track construction, and the inconvenience of having to retrain the user can be eliminated.

In addition, SLOC technology allows network video recorders (NVRs) to simultaneously provide analog data and multiple digital data (HD compressed video for recording, HD compressed video for live video, HD compressed video for capture) on the monitor screen. When playing the live screen on the video recorder, the camera device can request a high quality live screen according to the situation.

In addition, according to the split mode, the quality of the live video, that is, the resolution is set differently so that a quick display and a high quality display are possible, so that more efficient monitoring is possible.

While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined only by the appended claims.

Claims (7)

An HD camera for shooting analog video, HD compressed video for recording, HD compressed video for recording, and HD compressed video for capturing;
A network video recorder (NVR) connected to the HD camera through an analog coaxial cable and storing or displaying an image transmitted from the HD camera and requesting a change of a setting related to image display from the HD camera; And
A display unit displaying an image transmitted from the network video recorder (NVR);
Including;
The network video recorder (NVR) simultaneously receives the analog video and the HD compressed video from the HD camera through the analog coaxial cable, and displays the analog video and the HD compressed video received through the analog coaxial cable. And providing the part to be displayed. The multi-image system of claim 1, wherein the network video recorder (NVR) requests the HD camera to change a setting for a resolution, a frame rate per second, and a bit rate of an image. The method according to claim 1, wherein the HD camera,
A lens unit which receives an external image;
An image sensor unit transferring the data signal received from the lens unit to a camera processor;
An audio input unit to which an audio signal is input;
An audio output unit configured to output an audio signal input to the audio input unit;
A camera processor encoding the image signal and the audio signal transmitted from the image sensor unit and the audio input unit into a compressed image;
A modem for transmitting data encoded as a compressed image through the camera processor through an analog coaxial cable or storing the data in a storage unit; And
An external control interface for changing a setting of the HD camera;
Multiple imaging system comprising a. The method of claim 1, wherein the network video recorder to simultaneously display analog video, recording HD compressed video, live HD compressed video and capture HD compressed video,
A modem for receiving data through an analog coaxial cable connected to the HD camera,
Live compressed video decoder for displaying high-quality digital live display of the digital data received from the modem,
And a compressed video decoder for recording a high-definition digital display of the HD compressed video for recording among the data received by the modem. A multiple image display method of a multiple image system including an HD camera, a network video recorder (NVR), and a display unit,
Photographing an external image through the HD camera;
Receiving data through an analog coaxial cable connected to the HD camera in the network video recorder (NVR);
Analog data among the data received by the network video recorder (NVR) is analog live display through an analog display device, or digital live display through a high-definition digital display device through an analog video decoder unit, and received by the network video recorder (NVR). The digital data of the collected data is displayed on a high-definition digital live video through a compressed video decoder for live, and the HD compressed video for recording among the data received by the network video recorder (NVR) is stored through a storage unit or stored and then compressed for recording when necessary. Displaying a high-definition digital display of the recorded image through the image decoder;
Including;
The network video recorder (NVR) simultaneously receives the analog data and the digital data from the HD camera via the analog coaxial cable, and displays the analog data and the digital data received through the analog coaxial cable. Multiple video display method characterized in that. The method of claim 5, wherein the data received from the HD camera is an analog image, a recording HD compressed image, a live HD compressed image, and a capturing HD compressed image. The method of claim 5, further comprising: requesting, from the network video recorder, the HD camera change a setting for a resolution, a frame rate per second, and a bit rate for an image;
Multiple image display method characterized in that it further comprises.

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