KR102224728B1 - Apparatus and method for transmitting and receiving ip image data using coaxial cable - Google Patents

Abstract

Disclosed are an IP image data transceiving apparatus using a coaxial cable and a method thereof. The IP image data transceiving apparatus includes: an IP image data receiving module receiving IP image data from an IP camera; a coaxial cable IP image data transmitting module transmitting the received IP image data through a 5C-HFBT coaxial cable; a coaxial cable IP image data receiving module receiving the IP image data through the 5C-HFBT coaxial cable; and an IP image data transmitting module transmitting the IP image data received from the coaxial cable IP image data receiving module to a network video recorder (NVR) in order to record the data. Through the above-stated IP image data transceiving apparatus using a coaxial cable and the method thereof, an already laid coaxial cable can be used to transmit IP image data, thus bringing about effects of significantly reducing costs for building a system and a network and having a high transmission speed, transmission volume and transmission distance. In particular, the present invention can bring about effects of improving the speed of a physical layer from 1 Gbps to 2 Gbps through a chipset improvement on one single piece of equipment, and enabling transmission up to 1 km by connecting up to twenty-four IP cameras at the same time.

Description

IP image data transmission/reception device and method using coaxial cable {APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING IP IMAGE DATA USING COAXIAL CABLE}

The present invention relates to an apparatus and method for transmitting and receiving data, and more particularly, to an apparatus and method for transmitting and receiving IP video data using a coaxial cable.

Since IP camera images are collected and monitored from a rather long distance, significant cost is incurred in network construction.

Although it is possible to use a coaxial cable already installed, there are many restrictions on transmitting and receiving a large number of IP camera images using a coaxial cable.

Existing coaxial cable-IP network transmission equipment is capable of the speed of the physical layer up to 1 Gbps. Existing analog signal transmission equipment cannot transmit 4 megapixel images of IP cameras.

In other words, the existing coaxial cable-IP network transmission equipment reveals significant limitations in terms of bandwidth, transmission distance, and transmission speed.

Accordingly, there is a need for a means for transmitting data of a higher bandwidth over a longer distance through a previously installed coaxial cable.

Registered Patent Publication 10-0453823 Registered Patent Publication 10-0858787

An object of the present invention is to provide an apparatus for transmitting and receiving IP video data using a coaxial cable.

Another object of the present invention is to provide a method of transmitting and receiving IP video data using a coaxial cable.

An apparatus for transmitting/receiving IP video data using a coaxial cable according to an object of the present invention described above includes: an IP video data receiving module for receiving IP video data from an IP camera; A coaxial cable IP video data transmission module for transmitting the received IP video data through a 5C-HFBT coaxial cable; A coaxial cable IP image data receiving module for receiving IP image data through the 5C-HFBT coaxial cable; It may be configured to include an IP video data transmission module that transmits to a network video recorder (NVR) to record the IP video data received by the coaxial cable IP video data receiving module.

Here, the IP video data receiving module is configured to receive IP video data from a plurality of IP cameras, and the coaxial cable IP video data transmitting module is configured to transfer the IP video data received from the plurality of IP cameras to one coaxial cable. May be configured to transmit via.

The method for transmitting/receiving IP video data using a coaxial cable according to another object of the present invention as described above includes the steps of: receiving, by an IP video data receiving module, IP video data from an IP camera; Transmitting, by a coaxial cable IP video data transmission module, the received IP video data through a 5C-HFBT coaxial cable; Receiving, by a coaxial cable IP video data receiving module, IP video data through the 5C-HFBT coaxial cable; The IP video data transmission module may be configured to include transmitting to a network video recorder (NVR) to record the IP video data received from the coaxial cable IP video data reception module.

Here, the step of receiving, by the IP video data receiving module, IP video data from an IP camera, is configured to receive IP video data from a plurality of IP cameras, and the coaxial cable IP video data transmission module receives the received IP video data. The step of transmitting the 5C-HFBT through a coaxial cable may be configured to transmit IP image data received from the plurality of IP cameras through a single coaxial cable.

And the step of transmitting, by the coaxial cable IP video data transmission module, the received IP video data through a 5C-HFBT coaxial cable, is configured to transmit the IP video data received from the plurality of IP cameras through a single coaxial cable. Can be.

According to the above-described apparatus and method for transmitting and receiving IP video data using a coaxial cable, by being configured to transmit IP video data using a coaxial cable already installed, the system and network construction cost is significantly reduced and a high transmission speed. It has the effect of having a transmission amount and a transmission distance.

In particular, there is an effect that the speed of the physical layer can be improved from 1 Gbps to 2 Gbps by improving the chipset in one device, and at the same time, up to 24 IP cameras can be connected and transmitted up to 1 km.

1 and 2 are schematic diagrams of an apparatus for transmitting and receiving IP video data using a coaxial cable according to an embodiment of the present invention.
3 is a block diagram of an apparatus for transmitting and receiving IP video data using a coaxial cable according to an embodiment of the present invention.
4 is a block diagram of an IP image data selection module according to an embodiment of the present invention.
5 is a block diagram of an IP image data allocation module according to an embodiment of the present invention.
6 is a flowchart of a method of transmitting/receiving IP image data using a coaxial cable according to an embodiment of the present invention.

In the present invention, various modifications may be made and various embodiments may be provided, and specific embodiments will be illustrated in the drawings and will be described in detail in specific details for carrying out the invention. However, this is not intended to limit the present invention to a specific embodiment, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention. In describing each drawing, similar reference numerals have been used for similar elements.

Terms such as first, second, A, and B may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. The term and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. It should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof does not preclude in advance.

Unless otherwise defined, all terms used herein including technical or scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in the present application. Does not.

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

1 and 2 are schematic diagrams of an apparatus for transmitting and receiving IP video data using a coaxial cable according to an embodiment of the present invention.

1 and 2, an apparatus 100 for transmitting and receiving IP image data using a coaxial cable according to an embodiment of the present invention transmits IP image data from a maximum of 1 km to 3 km using a general coaxial cable. It is configured to transmit to.

Since the IP image data transmission/reception apparatus 100 transmits and receives IP image data using a pre-installed coaxial cable, cost reduction is maximized.

In addition, the IP image data transmission/reception apparatus 100 may be converted into a slave mode and a master mode to perform a transmission operation or a reception operation.

On the other hand, it can be set by connecting a large number of IP cameras 10 to 16 to 24 units to one IP image data transmission and reception device 100.

In one coaxial cable, a UTC signal may be superimposed and transmitted together with a power PoC video.

3 is a block diagram of an apparatus for transmitting and receiving IP video data using a coaxial cable according to an embodiment of the present invention.

First, referring to FIG. 3, the apparatus 100 for transmitting and receiving IP image data using a coaxial cable according to an embodiment of the present invention includes an IP image data receiving module 110, an IP image data selection module 120, and a coaxial cable IP image. Data transmission module 130, coaxial cable IP image data reception module 140, IP image data allocation module 150, IP image data transmission module 160, automatic mode recognition module 170, automatic mode conversion module 180 ) Can be configured to include.

Here, the red arrow indicates the flow of IP video data on the network, and the blue arrow indicates the flow of IP video data on the coaxial cable.

In addition, the IP video data transmission/reception device 100 can operate in a slave mode and a master mode, respectively, and when installed at a transmitting end, it operates in a slave mode, and when installed at a receiving end, it can operate in a master mode. have. Since you only need to install one product and set the operation mode anywhere in the transmitter/receiver end, the usability of the product can be improved.

Hereinafter, a detailed configuration will be described.

The IP image data receiving module 110 may be configured to receive IP image data from the IP camera 10 in a slave mode. That is, it is configured to operate when installed at the transmitting end.

Here, the IP image data receiving module 110 may receive IP image data through a plurality of IP cameras 10 and a transmitter switch hub 11 connected using cat.5e in a slave mode. . 16 to 24 IP cameras 10 may be connected through the transmitter switch hub 11.

In addition, the IP camera 10 may add and output a tag for distinguishing the IP camera 10 to the IP image data.

The IP image data selection module 120 is a component for selecting and transmitting IP image data of a specific IP camera 10 from among IP image data received by the IP image data receiving module 110.

When the IP video cameras of 16 to 24 or more IP cameras 10 are simultaneously received, a traffic problem may occur and a problem may occur in the transmission capacity of the coaxial cable. Accordingly, when a lot of changes occur in an image of a specific IP camera 10, priority is given to a corresponding image frame section and transmitted, thereby solving a problem of traffic or transmission capacity.

For example, in the IP cameras 10 installed all over the alleyway, most of the people do not move or the vehicle does not move, so there may be no significant change in the image. In this case, it is not necessary to continuously transmit an image without change. Accordingly, the IP video data selection module 120 may be configured to transmit the video frame section only when a change occurs in the video in a specific video frame section.

The coaxial cable IP image data transmission module 130 may be configured to transmit the IP image data received from the IP image data receiving module 110 in the slave mode through a 5C-HFBT coaxial cable.

Meanwhile, the coaxial cable IP image data transmission module 130 may be configured to transmit IP data of a specific image frame section of the IP camera 10 selected by the IP image data selection module 120 through a 5C-HFBT coaxial cable. . For example, for IP cameras #1 and #5 in which a change occurs in an image, an image frame interval of 10 minutes and 5 minutes, respectively, of a specific image frame interval in which an image change occurs may be extracted and transmitted.

The coaxial cable IP image data receiving module 140 may be configured to receive IP image data through a 5C-HFBT coaxial cable in a master mode. That is, it is configured to operate when installed at the receiving end.

The IP video data allocation module 150 checks whether the IP video data received from the coaxial cable IP video data receiving module 140 is a specific video frame section of which IP camera 10 at which time period, and determines the IP video data of the corresponding IP video data. It may be configured to allocate the camera 10 and a time zone.

The IP video data transmission module 160 may be configured to transmit the IP video data received from the coaxial cable IP video data reception module 140 to a network video recorder (NVR) 20.

In addition, the IP image data transmission module 160 may be configured to transmit the IP image data of a specific image frame section of the specific IP camera 10 received from the coaxial cable IP image data reception module 140 to the NVR 20. have.

Here, the IP image data transmission module 160 may be configured to transmit IP image data through the NVR 20 and the receiving end switch hub 21 connected using cat.5e. The receiving end switch hub 21 may be provided corresponding to the number of IP cameras 10.

Meanwhile, the coaxial cable IP image data transmission module 130 and the coaxial cable IP image data transmission module 140 may be configured to automatically detect an interface with a currently connected configuration by performing an AUTO MDI/MDIX function. Before performing AUTO NEGOTIATION, if TX=TX and RX=RX are set to each other, it can be set so that TX=RX and RX=TX match regardless of the cable type. Here, when performing the AUTO MDI/MDIX function, if they do not match each other, the type of physical cable does not match and can be replaced.

In addition, the coaxial cable IP image data transmission module 130 and the coaxial cable IP image data transmission module 140 may be configured to set a duplex setting to HALF when AUTO NEGOTIATION fails. When the speed is detected, if it is detected as FULL-HALF between both ends of the transmission/reception, it is a communication failure, and if it is HALF-HALF, it can be determined that communication is possible.

The mode automatic recognition module 170 may be configured to automatically detect whether it is connected to the IP camera 10 or the NVR 20, and automatically recognize whether the current mode is a slave mode or a master mode according to the detection result. have. The automatic mode recognition module 170 may automatically recognize whether the current mode is a slave mode or a master mode by recognizing whether the currently connected configuration is the IP camera 10 or the NVR 20.

The automatic mode conversion module 180 may be configured to automatically convert a current operation mode into a slave mode or a master mode according to a mode automatically recognized by the mode automatic recognition module 170. Accordingly, the mode can be automatically changed without changing the mode by a separate DIP switch.

4 is a block diagram of an IP image data selection module according to an embodiment of the present invention.

Referring to FIG. 4, the IP image data selection module 120 includes an IP image data input unit 121, an IP image data tag analysis unit 122, an image data combination unit 123 for each IP camera, and a contrast unit for each image frame ( 124), video frame variation check unit 125, video frame section extraction section 126, video frame section priority setting section 127, video frame section time information adding section 128, video frame section output section ( 129). Hereinafter, a detailed configuration will be described.

The IP image data input unit 121 may be configured to receive IP image data from the IP image data receiving module 110.

The IP image data tag analysis unit 122 may be configured to analyze a tag added to the IP image data input from the IP image data input unit 121 to identify which IP image data of the IP camera 10 is.

On the other hand, since the IP image data receiving module 110 receives in an IP packet format on a network, IP image data received from multiple IP cameras 10 are not sequentially received.

Accordingly, the image data combination unit 123 for each IP camera combines the IP image data input from the IP image data input unit 121 into image data for each IP camera using the tag analyzed by the IP image data tag analysis unit 122 can do. Of course, it can be combined using an IP address, but tags can be combined at a higher level and can be useful for checking, processing, or storing video data for each IP camera in an NVR in the future.

The video frame-by-frame preparation unit 124 determines whether or not the pixel change for each video frame occurs in the video data for each IP camera in the video data for each IP camera combined by the video data combination unit 123 for each IP camera. Can be configured to The background composition may always exist in the same image frame, but when a person passes by or a vehicle passes by, a significant change occurs for each image frame.

The image frame variation check unit 125 may be configured to check whether or not the image frame for each IP camera compared by the contrast unit 124 for each image frame is changed.

The image frame section extracting unit 126 may be configured to extract an image frame section for each IP camera, which is confirmed to be fluctuating by the image frame variation checking unit 125, from the IP image data.

The priority setting unit 127 for each video frame section is configured to set the priority in the video frame section for each IP camera extracted by the video frame section extraction unit 126 according to the order of occurrence and according to the amount of variation of the video frame. I can. Basically, the priority is given high according to the order of occurrence, and the priority can be set higher for the video frame section in which the variation of the video frame is unusually large even if the order of occurrence is delayed.

The video frame section time information adding unit 128 may be configured to add each time information to a tag for each video frame section for each IP camera whose priority is set in the priority setting unit 127 for each video frame section. .

The video frame section output unit 129 may be configured to output the video frame section for each IP camera to which the time information is added from the video frame section time information adding unit 128 according to the priority. That is, it may be transmitted first through the coaxial cable according to the priority.

5 is a block diagram of an IP image data allocation module according to an embodiment of the present invention.

Here, referring to FIG. 5, the IP image data allocation module 150 includes a coaxial cable IP image data input unit 151, an IP image data tag/time information analysis unit 152, an image frame section extraction unit 153, and an image It may be configured to include an output unit 154 for each frame section. Hereinafter, a detailed configuration will be described.

The coaxial cable IP image data input unit 151 may be configured to receive coaxial cable IP image data from the coaxial cable IP image data receiving module 140.

The IP video data tag/time information analysis unit 152 parses the coaxial cable IP video data input from the coaxial cable IP video data input unit 151 and converts it into IP video data. 10) It can be configured to check and time information and to identify the video frame section for each IP camera.

The video frame section extraction unit 153 may be configured to individually extract video frame sections for each IP camera identified by the IP video data tag/time information analyzer 152 from a stream of IP video data.

The video frame section output unit 154 may be configured to output video frame sections for each IP camera that are separated and extracted from the video frame section extractor 153.

6 is a flowchart of a method of transmitting/receiving IP image data using a coaxial cable according to an embodiment of the present invention.

6, the IP image data receiving module 110 receives IP image data from the IP camera 10 (S101).

Here, the IP image data receiving module 110 may be configured to receive IP image data from a plurality of IP cameras 10.

Next, the coaxial cable IP video data transmission module 130 transmits the received IP video data through the 5C-HFBT coaxial cable (S102).

Here, the coaxial cable IP image data transmission module 130 may be configured to transmit the IP image data received from the plurality of IP cameras 10 through one coaxial cable.

Next, the coaxial cable IP image data receiving module 140 receives the IP image data through the 5C-HFBT coaxial cable (S103).

Next, the IP video data transmission module 160 transmits the IP video data received from the coaxial cable IP video data reception module 140 to the NVR (network video recorder) 20 (S104).

Although described with reference to the above embodiments, those skilled in the art can understand that various modifications and changes can be made to the present invention without departing from the spirit and scope of the present invention described in the following claims. There will be.

110: IP video data receiving module
120: IP video data selection module
121: IP video data input unit
122: IP video data tag analysis unit
123: video data combination unit for each IP camera
124: contrast unit for each image frame
125: image frame variation check unit
126: image frame section extraction unit
127: priority setting unit for each video frame section
128: video frame section time information adding unit
129: video frame section output unit
130: coaxial cable IP video data transmission module
140: coaxial cable IP video data receiving module
150: IP video data allocation module
151: Coaxial cable IP video data input unit
152: IP video data tag/time information analysis unit
153: image frame section extraction unit
154: output unit for each video frame section
160: IP video data transmission module
170: mode automatic recognition module
180: mode automatic conversion module

Claims (4)

An IP image data receiving module for receiving IP image data from an IP camera in a slave mode;
An IP image data selection module for selecting and transmitting IP image data of a specific IP camera from among the IP image data received by the IP image data receiving module;
A coaxial cable IP image data transmission module for transmitting the received IP image data through a 5C-HFBT coaxial cable in the slave mode;
An IP video data allocation module for allocating an IP camera and a time zone of the IP video data by checking whether the IP video data received from the coaxial cable IP video data receiving module is a specific video frame section of a certain IP camera and a time zone;
A coaxial cable IP image data receiving module for receiving IP image data through the 5C-HFBT coaxial cable in a master mode;
An IP video data transmission module transmitting to a network video recorder (NVR) to record the IP video data received from the coaxial cable IP video data receiving module in the master mode;
A mode auto-recognition module for automatically detecting whether the IP camera is connected or the NVR, and automatically recognizing whether a current mode is a slave mode or a master mode according to a detection result;
A mode automatic conversion module for automatically converting a current operation mode to a slave mode or a master mode according to a mode automatically recognized by the mode automatic recognition module,
The IP video data receiving module,
It is configured to receive IP video data from a plurality of IP cameras,
The coaxial cable IP video data transmission module,
It is configured to transmit the IP image data received from the plurality of IP cameras through one coaxial cable,
The IP video data selection module,
An IP image data input unit receiving IP image data from the IP image data receiving module;
An IP video data tag analysis unit that analyzes a tag added to the IP video data input from the IP video data input unit to identify the IP video data of which IP camera;
A video data combination unit for each IP camera that combines the IP image data input from the IP image data input unit into image data for each IP camera using a tag analyzed by the IP image data tag analysis unit;
An image frame-by-image contrast unit configured to determine whether a pixel change occurs for each image frame in the image data of each IP camera in the image data for each IP camera combined by the image data combination unit for each IP camera;
An image frame variation check unit for checking whether or not the image frame for each IP camera compared by the contrast unit for each image frame;
A video frame section extracting unit for extracting a video frame section for each IP camera, which is identified as having a change by the video frame change checking unit, from IP video data;
A priority setting unit for each video frame section for setting a priority in the video frame section for each IP camera extracted by the video frame section extraction unit according to an order of occurrence and according to a variation amount of the video frame;
A video frame section time information adding unit for adding time information to a tag for video frame sections for each IP camera for which priority is set in the priority setting unit for each video frame section;
The video frame section time information adding section is configured to include a video frame section output unit for outputting the video frame section for each IP camera to which time information is added according to the priority,
The IP video data allocation module,
A coaxial cable IP video data input unit for receiving coaxial cable IP video data from the coaxial cable IP video data receiving module;
IP that parses the coaxial cable IP image data input from the coaxial cable IP image data input unit and converts it into IP image data, analyzes the tag to check IP camera and time information, and identifies the video frame section for each IP camera Image data tag/time information analysis unit;
A video frame section extracting unit for individually extracting the video frame section for each IP camera identified by the IP video data tag/time information analysis unit from a stream of IP video data;
The apparatus for transmitting and receiving IP video data using a coaxial cable, comprising: an output unit for each video frame section for outputting video frame sections for each IP camera that are separated and extracted from the video frame section extraction section. delete delete delete

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