KR20150047263A

KR20150047263A - Camera, digital video recorder and video monitoring system comprising thereof

Info

Publication number: KR20150047263A
Application number: KR1020130127128A
Authority: KR
Inventors: 황인준
Original assignee: (주) 픽셀플러스
Priority date: 2013-10-24
Filing date: 2013-10-24
Publication date: 2015-05-04
Also published as: WO2015060670A1

Abstract

A camera according to an embodiment of the present invention includes a data generation unit for generating image data by processing a photographed image, a compression unit for compressing the image data to generate compressed data, And a communication interface unit for transmitting the combined data to an external client.

Description

[0001] CAMERA, DIGITAL VIDEO RECORDER AND VIDEO MONITORING SYSTEM COMPRISING THEREOF [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a camera, a DVI, and a video surveillance system including the same.

A video surveillance system composed of a camera and a DVR (Digital Video Recorder) is realized by the camera capturing a specific area and transmitting the captured image to the DVR. A method of transmitting an image from a camera to a DVR is a method of transmitting an image in the form of an analog signal and a method of transmitting in the form of a digital signal.

In the video surveillance system, there are HD-SDI (Serial Digital Interface) transmission method and network transmission method in the form of digital signals. The HD-SDI method is a method of transmitting digital signals of uncompressed high-quality images through a coaxial cable. A network transmission method is a method of compressing a high-quality image and transmitting a digital signal of the compressed image through a network such as Ethernet.

In the HD-SDI transmission method, the high-quality image of the camera is transmitted to the DVR. However, since the DVR needs to compress the high-quality image received from each camera, the complexity of the DVR increases and the unit price increases. Since the network transmission method compresses and transmits the image from the camera, the complexity of the DVR is relatively low because there is no need to compress the image in the DVR. However, when the real-time monitoring is executed through the camera in the DVR, the received compressed image must be restored Therefore, there is a disadvantage that high quality monitoring is difficult.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a camera, a DVI al, and a video surveillance system including the camera, the DVI al, and the video surveillance system that enable high-quality surveillance while lowering complexity and unit cost of DVI.

The technical problems of the present invention are not limited to the above-mentioned technical problems, and other technical problems which are not mentioned can be understood by those skilled in the art from the following description.

In one embodiment, the combining unit may generate the combined data by allocating at least one bit of the plurality of bits constituting the image data to the compressed data.

In one embodiment, the combining unit may insert the compressed data into the idle region of the image data to generate the combined data.

In one embodiment, the communication interface unit may transmit the combined data to the external client through a coaxial cable, and receive a control command from the external client to control the compression unit.

In one embodiment, the control unit may further include a control unit for controlling the compression unit based on the control command.

The DVI according to an embodiment of the present invention includes a communication interface unit for receiving the combined data obtained by combining the video data and the compressed data obtained by compressing the video data from at least one camera, A data processing unit for processing the image data so as to output the image data to the screen and releasing the compression of the compressed data, a display unit for outputting the image data processed by the data processing unit, And a storage unit for storing the data.

In one embodiment, the combined data may be configured by combining the compressed data with at least one bit among a plurality of bits constituting the image data.

In one embodiment, the combined data may be configured by inserting the compressed data into an idle region of the image data.

In one embodiment, the communication interface may receive the combined data from the at least one camera via a coaxial cable.

In one embodiment, the apparatus may further comprise a control unit for generating a control command for controlling the at least one camera.

In one embodiment, the control command may be communicated to the at least one camera via the communication interface.

The video surveillance system according to an embodiment of the present invention generates compressed data obtained by compressing image data generated based on a photographed image and combined data obtained by combining the compressed data with the image data, A camera for transmitting the compressed data to the outside and transmitting the combined data to the outside via a second communication interface and a second communication interface for receiving the compressed data from the camera via the first communication interface, And a decoder that receives the combined data.

In one embodiment, the first communication interface may be an Ethernet communication interface and the second communication interface may be a coaxial cable communication interface.

In one embodiment, the camera includes a data generating unit that generates image data from the photographed image, a compression unit that compresses the image data to generate compressed data, a first communication interface unit that transmits the compressed data to the digital video camera, A data detecting unit for detecting the compressed data transmitted through the first communication interface unit, a combining unit for combining the video data and the detected compressed data, and a second communication interface for transmitting the combined data to the DVB .

In one embodiment, the first communication interface unit or the second communication interface unit may receive a control command for controlling the compression unit from the decoder.

In one embodiment, the camera may further include a control unit for controlling the compression unit based on the control command.

In one embodiment, the DVI comprises a first communication interface for receiving the compressed data from the camera, a second communication interface for receiving the combined data from the camera, a second communication interface for separating the combined data into video data and compressed data, A data processing unit for decompressing the compressed data and processing the decompressed data and the image data so as to be outputable; a display unit for outputting the decompressed data and the image data; And a storage unit for storing the compressed data.

In one embodiment, the DVR may further include a control unit for generating a control command for controlling the camera.

In one embodiment, the control command may be communicated to the camera via the first communication interface or the second communication interface.

The camera, the DVI, and the video surveillance system including the camera, the DVI, and the video surveillance system according to an embodiment of the present invention can lower the complexity and the unit price of the DVI, and enable high quality monitoring.

1 is a block diagram showing a video surveillance system according to a first embodiment of the present invention.
2 is a block diagram showing a camera according to a first embodiment of the present invention.
FIGS. 3 and 4 are views for explaining a process of combining the image data and compressed data of the camera of FIG.
5 is a block diagram illustrating a DVR according to an embodiment of the present invention.
FIG. 6 is a block diagram illustrating a video surveillance system according to a second embodiment of the present invention.
7 is a block diagram showing a camera according to a second embodiment of the present invention.
FIG. 8 shows a video surveillance system according to a third embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference numerals even though they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the difference that the embodiments of the present invention are not conclusive.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; may be "connected," "coupled," or "connected. &Quot;

1 is a block diagram showing a video surveillance system according to a first embodiment of the present invention.

Referring to FIG. 1, the video surveillance system 1000 according to the first embodiment of the present invention may include at least one camera 100 and a DVR 200.

Each of the at least one cameras 100 may generate image data by photographing a predetermined region, person, and / or object. That is, at least one camera 100 may be a surveillance camera that monitors a specific area in real time. For this purpose, each of at least one camera 100 can capture a high definition (HD) image in real time and convert the captured image into image data. Each of the at least one cameras 100 may generate compressed data by compressing the generated image data. The frame rate of the compressed data, the number of pixels, and the like may vary depending on the setting. The image data may be compressed using various methods well known in the art (for example, wavelet, H.264, JPEG, MPEG, Fractal, etc.).

In addition, each of the at least one cameras 100 may combine the image data and compressed data to generate combined data. That is, the generated combined data may include the image data and compressed data obtained by compressing the image data. The generated combined data may include compressed data obtained by compressing the image data and image data of previous / next images corresponding to the image data.

The DVR 200 can receive the combined data from at least one camera 100. [ For example, the DVR 200 can receive the combined data from at least one camera 100 using a serial digital interface (SDI) technology through a coaxial cable. The DVR 200 can extract the combined data and extract the video data and the compressed data.

The DVR 200 can process the extracted image data and output it through the display unit. For example, the DVR 200 can process each of the image data photographed from at least one camera 100 in a divided output (e.g., outputting images photographed from a plurality of cameras on one monitor) on the screen of the display unit have.

In addition, the DVR 200 can store compressed data. The stored compressed data may be used later to decompress and identify an image at a particular time point for a particular camera (e.g., camera 2).

As described above, the video surveillance system 1000 according to an embodiment of the present invention can transmit combined data, in which at least one camera 100 combines image data and compressed data, to the DVR 200 through a coaxial cable . Therefore, the complexity and unit cost of the DVR 200 can be reduced. This will be described in more detail with reference to Figs. 2 to 5 below.

2 is a block diagram showing a camera according to a first embodiment of the present invention.

2, the camera 100 according to the first embodiment of the present invention includes an image sensor 110, a data generation unit 120, a compression unit 130, a combining unit 140, a communication interface unit 150 And a control unit 160. The control unit 160 includes a control unit 160,

The image sensor 110 generates and outputs an image signal corresponding to an external image. The output video signal is a high-resolution video frame, and can have a high-definition HD resolution. The image sensor 10 may have various frame rates (fps, frame per second) and may have a wide angle (e.g., 180 degrees) viewing angle characteristic. The image sensor 110 may be, for example, a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor) sensor.

The data generation unit 120 may process the image signal generated from the image sensor 110 to generate digital image data. In this regard, the data generation unit 120 may be implemented with an image processing processor (ISP).

The compression unit 130 may compress the image data transmitted from the data generation unit 120. For example, the compression unit 130 can determine the frame rate, compression quality, and the like of the compressed data under the control of the controller 160.

The combining unit 140 may combine the image data transmitted from the data generating unit 120 and the compressed data transmitted from the compressing unit 130 to generate combined data. The specific operation of the coupling portion 140 will be described in more detail with reference to FIGS. 3 and 4 below.

The communication interface unit 150 can transmit the generated combined data to the external client through the coaxial cable communication interface. Here, the external client may be, for example, a DVR 200 (see FIG. 1). Also, the communication interface unit 150 may receive a control command for controlling the compression unit 130 from an external client.

The control unit 160 may control the compression unit 130 based on the control command transmitted through the communication interface unit 150.

FIGS. 3 and 4 are views for explaining a process of combining the image data and compressed data of the camera of FIG.

Referring to FIG. 3, the combining unit 140 may generate combined data by allocating at least one bit among a plurality of bits constituting image data to compressed data.

As shown in FIG. 3, the image data may be composed of, for example, ten bits D0 to D9. In general, the camera 100 (see FIG. 1) transmits video data in units of 10 bits to the DVR 200 (see FIG. 1), but the DVR 200 receives video Use only data.

Accordingly, the combining unit 140 can generate the combined data by assigning unused two bits (for example, the lower two bits D0 and D1) of the 10 bits constituting the image data to the compressed data. That is, the combined data may include a compressed data area Cdat1 and a video data area Cdat2.

Next, referring to FIG. 4, the combining unit 140 may insert the compressed data into the idle region of the image data to generate combined data.

Specifically, the video data may be composed of a first area A, a second area B, and a third area C. For example, the first area A may be defined as an area including image data that is substantially output to the screen, and may be generally referred to as an active video area (Avtive Video Area). The second areas B1 and B2 may be defined as areas defining the start and end of the first area A and the third area C1. More specifically, the second area B1 is the end of the first area A and the third area C1, and the second area B2 is the end of the first area A and the third area C1 And may be generally referred to as sync code (SAV, EAV). The third area C1, C2 may be defined as an idle area.

Generally, the camera 100 transmits to the DVR 200 in units of image data including the first area A, the second area B, and the third area C shown in FIG. 4, The combining unit 140 outputs the image data to the third areas C1 and C2 of the image data by using only the information of the first area A and the second areas B1 and B2, It is possible to generate the combined data by inserting the compressed data.

5 is a block diagram illustrating a DVR according to an embodiment of the present invention.

5, a DVR 200 according to an exemplary embodiment of the present invention includes a communication interface 210, a data separator 220, a data processor 230, a display 240, a storage 250, , And a control unit 260. [

The communication interface unit 210 can receive the combined data from the camera 100 through the coaxial cable communication interface. Also, the communication interface unit 210 may transmit the control command generated by the control unit 260 to the camera 100 (see FIG. 1).

The data separator 220 separates the transmitted combined data and extracts image data and compressed data.

The data processing unit 230 can process the extracted image data in a form that can be output to the display unit 240. [ For example, the data processing unit 230 can scale the extracted image data. The scaling process is performed so that image data transmitted from a plurality of cameras is simultaneously output to a single screen through the display unit 240. The data processing unit 230 may store the compressed data in the storage unit 250 or may load the compressed data stored in the storage unit 250 and decompress the compressed data.

The display unit 240 may output image data transmitted from the data processing unit 230. The display unit 240 may be a cathode ray tube (CRT), a liquid crystal display (LCD), a thin film transistor liquid crystal display (TFT LCD), a light emitting diode (LED) And may include at least one of an organic light emitting diode (OLED), an active matrix OLED (AMOLED), a flexible display, a bended display, and a 3D display have.

The storage unit 250 may store the compressed data transmitted from the data processing unit 240. The stored compressed data can be used to confirm the image at a specific time point for a specific camera by decompressing it later. The storage unit 250 may be a flash memory type, a hard disk type, a micro type, a card type (for example, an SD card (Secure Digital Card) or an XD ROM, a programmable ROM (PROM), an EEPROM (Electrically Erasable PROM), and a memory such as a flash memory, And may include a storage medium of the type of at least one of magnetic memory (MRAM, magnetic RAM), magnetic disk, and optical disk type memory.

The control unit 260 may generate a control command for controlling the camera 100. [ The control unit 260 generates a control command for controlling the shooting time and angle of the camera 100 or controlling the frame rate and the number of pixels of the compressed data and transmits the control command to the camera 200 via the communication interface 210. [ (100). In addition, the control unit 260 may generate a control command for controlling a position on the screen on which images are to be output for each of a plurality of cameras.

FIG. 6 is a block diagram illustrating a video surveillance system according to a second embodiment of the present invention. 7 is a block diagram showing a camera according to a second embodiment of the present invention.

Referring to FIG. 6, the video surveillance system 2000 according to the second embodiment of the present invention may include a first camera 2100, a second camera 2200, and a DVR 2300. Although the two cameras 2100 and 2200 are illustrated as being connected to the DVR 2300 by way of example, the number of channels of the DVR 2300 (ex. 4 channels, 8 channels, 16 Channels, etc.), one or more cameras may be connected to the DVR 2300.

Since the first camera 2100 and the second camera 2200 have the same structure and function, the first camera 2100 will be mainly described below.

7, the first camera 2100 includes an image sensor 2110, a data generation unit 2120, a compression unit 2130, a first communication interface unit 2140, a data detection unit 2150, 2160, a second communication interface unit 2170, and a control unit 2180.

7, the image sensor 2110, the data generation unit 2120, the compression unit 2130, and the first communication interface unit 2140 are shown as being independent of each other. However, according to the design, .

The image sensor 2110, the data generation unit 2120 and the compression unit 2130 have the same functions as those of the image sensor 110, the data generation unit 120, and the compression unit 130 described with reference to FIG. 2 A detailed description will be omitted.

The first communication interface unit 2140 may transmit the compressed data generated by the compression unit 2130 to an external client through a first communication interface (e.g., an Ethernet communication interface).

The data detection unit 2150 can detect the compressed data by analyzing the network protocol of the first communication interface unit 2140 in real time. That is, the data detection unit 2150 can detect the compressed data among all the data transmitted through the first communication interface unit 2140.

The combining unit 2160 may combine the compressed data detected by the data detecting unit 2150 and the image data generated by the data generating unit 2120 to generate combined data. The concrete generation process of the combined data is as described with reference to FIGS.

The second communication interface 2170 can transmit the combined data to the external client through the second communication interface (e.g., coaxial cable communication interface). For example, the second communication interface 2170 and the first communication interface 2140 can transmit the combined data and the compressed data to the same external client, respectively, It can also be delivered.

The control unit 2180 can control the compression unit 2130 based on a control command transmitted from the DVR 2300 through the first communication interface unit 2140 or the second communication interface unit 2170. [

That is, the first camera 2100 and the second camera 2200 may selectively output the combined data or the compressed data through the communication interface of either the first communication interface 2140 or the second communication interface 2170 It can be forwarded to an external client.

6, the DVR 2300 includes a first communication interface unit 2310, a second communication interface unit 2320, a data processing unit 2330, a data separation unit 2340, a storage unit 2350, A controller 2360, and a controller 2370.

The storage unit 2350 and the display unit 2360 have the same functions as those of the storage unit 250 and the display unit 240 described with reference to FIG. 5, and a detailed description thereof will be omitted.

The first communication interface unit 2310 can receive compressed data from the first camera 2100 and the second camera 2200 through a first communication interface (e.g., an Ethernet communication interface).

The second communication interface unit 2320 can receive the combined data from the first camera 2100 and the second camera 2200 through a second communication interface (e.g., a coaxial cable communication interface).

The data processing unit 2330 may store the compressed data transmitted through the first communication interface unit 2310 in the storage unit 2350. Also, the data processing unit 2330 may load compressed data stored in the storage unit 2350, decompress the compressed data, and output the compressed data to the display unit 2360. The data processing unit 2330 may process the image data transmitted through the data separating unit 2340 to output the image data to the display unit 2360.

The data separator 2340 separates the combined data transmitted through the second communication interface 2320 and extracts image data and compressed data. The data separator 2340 transfers the extracted image data to the data processor 2330 and stores the compressed data in the storage unit 2350.

The control unit 2370 may generate a control command for controlling the cameras 2100 and 2200. The control unit 260 controls the shooting time and angle of the cameras 2100 and 2200 or controls the compression units of the cameras 2100 and 2200 to control the frame rate and the number of pixels of the compressed data Command can be generated. The generated control command will be transmitted to the cameras 2100 and 2200 through the first communication interface unit 2310 or the second communication interface unit 2320. In addition, the control unit 2370 can generate a control command for controlling the position on the screen on which the image is to be output for each of the plurality of cameras 2100 and 2200.

As described above, the cameras 2100 and 2200 of the video surveillance system 2000 according to the second embodiment of the present invention transmit compressed data to the DVR 2300 through the first communication interface, And transmits the combined data to the DVR 2300 through the DVR 2300. Therefore, the complexity and cost of the DVR 2300 can be reduced. This can lead to cost savings of the video surveillance system.

FIG. 8 shows a video surveillance system according to a third embodiment of the present invention. The video surveillance system according to the third embodiment of the present invention includes a plurality of cameras 3100, 3200, 3300, and 3400, Lt; RTI ID = 0.0 > 3500 < / RTI > 8, the video surveillance system 3000 is illustratively shown as including four cameras 3100, 3200, 3300, and 3400, but is not limited to, and may include more than four cameras have.

The first camera 3100, the second camera 3200, the third camera 3300 and the fourth camera 3400 may be connected to each other through a coaxial cable in a cascade form. 1 and 6, only one of the cameras connected in a cascade form (i.e., the fourth camera 3400) can be connected to the DVR 3500. [

Each of the first camera 3100, the second camera 3200, the third camera 3300 and the fourth camera 3400 shoots a high definition (HD) image in real time, And can compress the image data according to a control command from the DVR 3500, such as a compression frame rate, compression quality, and the like.

Each of the first camera 3100, the second camera 3200, the third camera 3300 and the fourth camera 3400 scales the generated image data to adjust the image size and position on the screen. That is, each of the first camera 3100, the second camera 3200, the third camera 3300, and the fourth camera 3400 generates the image data in accordance with the window size allocated to each of the generated image data, So as to generate image data positioned at the assigned window position.

The first camera 3100 adjusts the size of the captured image data to fit the window size allocated to the first camera 3100 on the display screen of the DVR 3500, The first image data may be generated by processing the image data according to the window position assigned to the camera 3100. [ Also, the first camera 3100 can generate the first compressed data obtained by compressing the photographed image data. Further, the first camera 3100 may generate the first combined data obtained by combining the first image data and the first compressed data, and may transmit the first combined data to the second camera 3200.

The second camera 3200 adjusts the image size so that the photographed image data matches the window size allocated to the second camera 3200 on the display screen of the DVR 3500, The second image data may be generated by processing the image data according to the window position assigned to the camera 3200. [ Further, the second camera 3200 can generate second compressed data obtained by compressing the photographed image data.

The second camera 3200 can extract the first image data and the first compressed data from the first combined data received from the first camera 3100. The second camera 3200 generates the first cascade image data by combining the generated second image data and the extracted first image data, combines the generated second compressed data and the extracted first compressed data, It is possible to generate cascaded compressed data. The second camera 3200 may combine the first cascade image data and the first cascade compressed data to generate second combined data and transmit the second combined data to the third camera 3300.

The third camera 3300 adjusts the size of the image so that the photographed image data matches the window size allocated to the third camera 3300 on the display screen of the DVR 3500, The third image data can be generated by processing the image data according to the window position assigned to the camera 3300. [ In addition, the third camera 3300 can generate the third compressed data obtained by compressing the photographed image data.

The third camera 3300 can extract the first image data, the second image data, the first compressed data, and the second compressed data from the second combined data received from the second camera 3200. The third camera 3300 generates the second cascade image data by combining the generated third image data, the extracted first image data, and the second image data, and outputs the generated third compressed data and the extracted first compressed data , The second cascade compressed data can be generated by collecting the second compressed data. The third camera 3300 may combine the second cascade image data and the second cascade compressed data to generate third combined data and transmit the third combined data to the fourth camera 3400.

The fourth camera 3400 adjusts the image size so that the photographed image data matches the window size allocated to the fourth camera 3400 on the display screen of the DVR 3500, It is possible to generate fourth image data by processing to match the window position assigned to the camera 3400. [ In addition, the fourth camera 3400 can generate fourth compressed data obtained by compressing the photographed image data.

The fourth camera 3400 receives the first image data, the second image data, the third image data, the first compressed data, the second compressed data, and the third compressed data from the third combined data received from the third camera 3300 Data can be extracted. The fourth camera 3400 generates the third cascade image data by combining the generated fourth image data, the extracted first image data, the second image data, and the third image data, and outputs the generated fourth compressed data, The extracted first compressed data, second compressed data, and third compressed data may be combined to generate third cascaded compressed data. The fourth camera 3400 may combine the third cascade image data and the third cascade compression data to generate the fourth combined data and transmit the fourth combined data to the DVR 3500.

The DVR 3500 can extract the third cascade image data and the third cascade compression data from the fourth combined data transmitted from the fourth camera 3400. [ The third cascade image data, which is the final image data transmitted to the DVR 3500, includes image data of each camera, and the image data classification of each camera is divided into a plurality of images on the screen according to a control command transmitted from the DVR 3500 to each camera Location.

The third cascaded compressed data, which is the final compressed data transmitted to the DVR 3500, includes compressed data of each camera. When compressed data is collected to identify compressed data of each camera, compressed data of each camera is stored It is possible to insert and collect identifiable information (Head).

To this end, the DVR 3500 may transmit control commands for controlling the cameras 3100, 3200, 3300, and 3400, as described with reference to FIG. Specifically, the DVR 3500 displays the display window position and the window size, which are information related to the image data of the first camera 3100, the second camera 3200, the third camera 3300, and the fourth camera 3400, Control commands such as the frame rate, the number of pixels, and the image quality, which are information related to the compressed data, to the fourth camera 3400 connected to the DVR 3500.

The fourth camera 3400 generates image data and compressed data (i.e., fourth image data and fourth compressed data) of the fourth camera 3400 according to a control command corresponding to the fourth camera 3400, 1 control command corresponding to the camera 3100, the second camera 3200, and the third camera 3300 can be transmitted to the third camera 3300.

The third camera 3300 generates image data and compressed data (i.e., third image data and third compressed data) of the third camera 3300 according to a control command corresponding to the third camera 3300, 1 camera 3100 and the second camera 3200 can be transmitted to the second camera 3200.

The second camera 3200 generates image data and compressed data (i.e., second image data and second compressed data) of the second camera 3200 according to a control command corresponding to the second camera 3200, 1 control command corresponding to the camera 3100 can be transmitted to the first camera.

As a result, the DVR 3500 can obtain the video data and the compressed data using the fourth combined data transmitted from the fourth camera 3400. The image data may include a first display data structure, a second display data structure, a third display data structure, and a fourth display data structure. The display data may be directly output to the screen, The second compressed data, the third compressed data, and the fourth compressed data are included and stored, so that the complexity and unit price of the DVR 3500 can be lowered. In addition, multiple cameras can be connected and controlled with a single cable, which can lead to installation of video surveillance system and reduction of equipment cost.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

1000, 2000, 3000: Video surveillance system
100, 2100 2200, 3100, 3200, 3300, 3400: camera
110, 2110: image sensor
120, and 2120:
130, 2130:
140, 2160:
150 and 210:
160, 260, 2180, 2370:
200, 2300, 3500: DVR
220, and 2340:
230, and 2330:
240, and 2360:
250, and 2350:
2140 and 2310: First communication interface unit
2150:
2170 and 2320: the second communication interface unit

Claims

A data generation unit for processing the photographed image to generate image data;
A compression unit for compressing the image data to generate compressed data;
A combining unit for combining the image data and the compressed data to generate combined data; And
And a communication interface unit for transmitting the combined data to an external client.

The method according to claim 1,
Wherein the combining unit generates the combined data by allocating at least one bit among a plurality of bits constituting the image data to the compressed data.

The method according to claim 1,
Wherein the combining unit inserts the compressed data into an idle region of the image data to generate the combined data.

The method according to claim 1,
Wherein the communication interface unit transmits the combined data to the external client through a coaxial cable and receives a control command for controlling the compression unit from the external client.

5. The method of claim 4,
And a control unit for controlling the compression unit based on the control command.

A communication interface for receiving the combined data obtained by combining the image data and the compressed data obtained by compressing the image data from at least one camera;
A data separator for separating the combined data into the image data and the compressed data;
A data processing unit which processes the image data so as to be outputable on the screen and releases the compression of the compressed data;
A display unit for outputting image data processed by the data processing unit; And
And a storage unit for storing the compressed data.

The method according to claim 6,
Wherein the combined data is formed by combining the compressed data with at least one bit among a plurality of bits constituting the image data.

The method according to claim 6,
Wherein the combined data is configured by inserting the compressed data into an idle region of the video data.

The method according to claim 6,
Wherein the communication interface unit receives the combined data from the at least one camera via a coaxial cable.

The method according to claim 6,
Further comprising a control unit for generating a control command for controlling the at least one camera.

11. The method of claim 10,
Wherein the control command is transmitted to the at least one camera through the communication interface unit.

Generating compressed data obtained by compressing image data generated based on the photographed image and combined data obtained by combining the compressed data with the image data, transmitting the compressed data through the first communication interface to the outside, A camera that transmits the combined data to the outside through an interface; And
And receives the compressed data from the camera through the first communication interface and receives the combined data through the second communication interface.

13. The method of claim 12,
Wherein the first communication interface is an Ethernet communication interface and the second communication interface is a coaxial cable communication interface.

13. The method of claim 12,
Wherein the camera comprises: a data generator for generating image data from a photographed image;
A compression unit for compressing the image data to generate compressed data;
A first communication interface unit for transmitting the compressed data to the divisor;
A data detection unit detecting the compressed data transmitted through the first communication interface unit;
A combining unit for combining the image data and the detected compressed data; And
And a second communication interface unit for transmitting the combined data to the divisor.

15. The method of claim 14,
Wherein the first communication interface unit or the second communication interface unit receives a control command for controlling the compression unit from the DV.

16. The method of claim 15,
Wherein the camera further comprises a control unit for controlling the compression unit based on the control command.

15. The method of claim 14,
Wherein the combining unit allocates at least one bit among a plurality of bits constituting the image data to the compressed data to generate the combined data.

15. The method of claim 14,
Wherein the combining unit inserts the compressed data into an idle region of the image data to generate the combined data.

13. The method of claim 12,
A first communication interface receiving the compressed data from the camera;
A second communication interface receiving the combined data from the camera;
A data separator for separating the combined data into image data and compressed data;
A data processing unit for decompressing the compressed data and processing the decompressed data and the image data so as to be outputable;
A display unit for outputting the decompressed data and the image data; And
And a storage unit for storing the compressed data.

20. The method of claim 19,
Wherein the DVR further comprises a controller for generating a control command for controlling the camera.

21. The method of claim 20,
Wherein the control command is transmitted to the camera through the first communication interface unit or the second communication interface unit.