KR101438645B1 - Intergrated wireless video transmitter and video processing system using the same - Google Patents

Abstract

The present invention relates to an integrated wireless image transmitting device and an image processing system using the same capable of wirelessly transmitting an image taken by a camera and, more specifically, to an integrated wireless image transmitting device and an image processing system using the same capable of composing a wireless image transmitting as a single unit since the system includes: an image receiving part receiving an image signal taken by the camera; an image processing part converting and compressing the image signal delivered from the image receiving part into a digital signal; a wireless processing part processing the compressed digital image signal as a wireless signal, a wireless transceiving part transmitting the wireless signal, and a control part controlling the image receiving part, the image processing part, and the wireless transceiving part; and the control part controlled to simultaneously process the wireless processing part and the image processing part by a control management part controlling the input and output of peripheral devices.

Description

[0001] The present invention relates to an integrated wireless video transmission apparatus and an image processing system using the wireless video transmission apparatus.

The present invention relates to an integrated wireless video transmission apparatus for wirelessly transmitting an image photographed by a camera and an image processing system using the same. More particularly, the present invention relates to an integrated wireless video transmission apparatus, A video processor for converting a video signal to be transmitted into a digital signal and compressing the video signal; a wireless processor for processing the compressed digital video signal into a wireless signal; a wireless transceiver for transmitting a wireless signal; a video receiver, And the control unit is controlled to simultaneously process the video processing unit and the wireless processing unit by a control management unit that controls the peripheral device and controls the input / output of the peripheral device, And an integrated wireless video transmission device It relates to an image processing system.

Closed circuit television (CCTV) is a television system that transmits images to specific recipients. In recent years, it has been widely used for a variety of purposes such as industrial, educational, medical, traffic control, disaster prevention, and in- have.

As a method of installing and monitoring the CCTV, there is a method in which a video signal is directly supplied through a coaxial cable, and the video signal is immediately output to the display device, or the video data captured by the camera is converted into digital data and stored in a digital video recording device . However, the installation distance is limited, installation is complicated due to a lot of wiring, and transmission defects are often caused by wiring shortage or connection failure.

With the development of wireless communication, a wireless transmission system has appeared in which a video captured by a camera is wirelessly transmitted to a CCTV system for storage or output to a screen. 1, the conventional wireless transmission system 100 includes a camera 1 for photographing a specific area, and an image processing unit (not shown) for converting an image photographed by the camera 1 into a digital signal A wireless transmission unit 120 and a wireless transmission antenna 130 for wirelessly transmitting the compressed video signal to the image processing unit 110 and a wireless receiving unit 150 for receiving the wireless signal, A wireless receiving antenna 140 and a storage unit 160 for storing the received video signal.

(Patent Literature)

Published Japanese Patent Application No. 10-2006-0130414 (Dec. 19, 2006) "Wireless image transmission device applied to vehicle rear monitoring and door phone"

However, since the conventional wireless image transmission system 100 requires a separate installation of the camera 1, the image processing unit 110, and the wireless transmission unit 120, the installation structure is complicated and difficult to maintain and repair. And an IP address is assigned to each of the image processing unit 110 and the wireless transmission unit 120. Therefore, a complex network setup process has been required.

In addition, due to the limitation of the wireless communication range, the loss of the video signal due to the wireless transmission, and the problem of the communication traffic load due to the large amount of data transmission, the conventional video transmission system by wireless communication is limited to a small- And it was costly to construct a large scale CCTV system. In addition, even if a large-scale CCTV system is installed with a great deal of cost, it is difficult to manage a large number of cameras and transmission devices installed at a long distance, and a lot of maintenance and management costs have been forced.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems,

The present invention relates to an apparatus for wirelessly transmitting an image photographed by a camera, the apparatus comprising: an image receiving unit for receiving a video signal photographed by a camera; a video image processing unit for converting a video signal transmitted from the image receiving unit into a digital signal, And a control unit for controlling the image receiving unit, the image processing unit, and the wireless transmitting / receiving unit, wherein the wireless transmitting unit processes the digital image signal compressed by the image processing unit into a wireless signal, The control unit controls the peripheral device and controls the input / output of the peripheral device so that the video processing unit and the wireless processing unit can be processed simultaneously, thereby configuring the wireless video transmission device as a single unit, The installation module at the time of configuration is greatly reduced, and a wide range of An integrated wireless video transmission apparatus capable of constructing a CCTV system, and an image processing system using the same.

The present invention includes a control management unit that drives only the functions necessary for transmitting a video signal processed by a wireless signal among the functions of the wireless transceiver unit so that the load applied to the wireless transceiver unit is minimized, The present invention provides an integrated wireless video transmission apparatus capable of transmitting video images stably and maintaining communication with a video management server that receives video images and an image processing system using the same.

The present invention simplifies the conventional system structure that is required to be interlocked and installed through a complicated process by integrating IP addresses assigned to each of the video processing unit and the wireless transmission unit into a single wireless video transmission apparatus, And to provide an integrated wireless video transmission apparatus and an image processing system using the same, which can reduce the installation and operation costs by enhancing convenience of maintenance and repair.

The present invention includes a Wi-fi module for transmitting a wireless signal of the IEEE 802.11n standard (maximum speed: 300 Mbps, effective data rate: 150 Mbps) so that a large amount of image information and a high quality image can be transmitted over a long distance, The present invention aims to provide an integrated wireless video transmission apparatus and a video processing system using the same, which can construct a large-scale CCTV system even in an environment where the wired installation of the CCTV is difficult.

The present invention adopts the wireless module of LTE (Long Term evolution) instead of the Wi-fi of the IEEE 802.11 standard and transmits the video using the existing LTE public network, so that even in a smart phone and a tablet PC connected to the LTE public network, And an image processing system using the same.

The present invention provides a wireless communication system including a wireless processing unit including a Wi-fi processing module, an LTE processing module, and a signal sensing module for sensing a strength of a surrounding wireless signal, and includes a wireless transceiver including a Wi-fi module and an LTE module, The wireless processing unit selectively uses the Wi-fi processing module and the LTE processing module according to the strength of the wireless signal sensed by the signal sensing module, so that the video of the surveillance area can be transmitted through various methods, And an image processing system using the same.

The present invention provides a wireless image transmission apparatus including an integrated wireless image transmission apparatus including a retransmission unit and an error correction unit so that the operation state of the wireless image transmission apparatus can be remotely recognized and managed, In a large-scale CCTV system in which a plurality of wireless video transmission devices are installed at a long distance which can not be visually confirmed by checking periodically transmitted video information, checking errors, and confirming reception of video in real time, And an object of the present invention is to provide an integrated wireless video transmission apparatus capable of identifying a problem of a device and managing the system and an image processing system using the same.

In order to achieve the above object, the present invention is implemented by the following embodiments.

According to another aspect of the present invention, there is provided an integrated wireless video transmission apparatus including an image receiving unit connected to a camera and receiving an image signal captured by a camera, and a controller for converting the image signal transmitted from the image receiving unit into a digital signal And a wireless processing unit for processing the digital video signal compressed by the video processing unit into a wireless signal, a wireless transmitting / receiving unit for transmitting a wireless signal transmitted from the image processing unit, The image processing unit includes an image conversion module for converting an analog image signal transmitted from the image receiving unit into a digital signal, an image compression module for compressing the converted digital signal, and a control unit for controlling the image processing unit and the wireless transceiving unit. And a control unit.

According to another embodiment of the present invention, in the integrated wireless video transmission apparatus according to the present invention, the control unit includes a control management unit for controlling peripheral devices and controlling input / output of peripheral devices, And the radio processing unit.

According to another embodiment of the present invention, in the integrated wireless video transmission apparatus according to the present invention, the wireless transceiver controls a function required for transmitting a video signal processed by the wireless signal among the functions of the wireless transceiver unit, The load applied to the wireless transmitting / receiving unit is minimized.

According to another embodiment of the present invention, in the integrated wireless video transmission apparatus according to the present invention, the wireless processing unit includes a Wi-fi processing module for processing a compressed digital video signal into a Wi-fi wireless signal, The transceiver includes a Wi-fi wireless module having a wireless communication scheme of the IEEE 802.11n standard.

According to another embodiment of the present invention, in the integrated wireless video transmission apparatus according to the present invention, the radio processing unit includes an LTE processing module for processing a compressed digital video signal into an LTE radio signal, And an LTE wireless module having a wireless mobile communication system.

According to another embodiment of the present invention, in the integrated wireless video transmission apparatus according to the present invention, the wireless transceiver includes a Wi-fi module having an IEEE 802.11n wireless communication scheme and an LTE Wherein the wireless processing unit includes a Wi-fi processing module, an LTE processing module, and a signal sensing module. The signal sensing module senses the strength of a surrounding wireless signal and transmits the sensing signal to the controller, And selectively drives the Wi-fi processing module and the LTE processing module according to intensity information of the signal detection module.

According to another embodiment of the present invention, an integrated wireless video transmission apparatus according to the present invention includes a retransmission unit for acquiring an image from the camera according to a retransmission instruction of a video management server and transmitting the acquired video to the video management server, And an error correction unit for acquiring an image from the camera and transmitting the acquired image to the image management server immediately after checking the error of the transmission device and correcting the error.

According to another embodiment of the present invention, an image processing system using an integrated wireless video transmission apparatus according to the present invention includes a camera for monitoring a specific area, a video camera connected to the camera via a cable, A video processor for converting a video signal transmitted from the video receiver into a digital signal and compressing the digital signal and a radio processor for processing the digital video signal compressed by the video processor into a radio signal; And a control unit for controlling the image receiving unit, the image processing unit, and the wireless transmitting / receiving unit, wherein the image processing unit converts the analog image signal transmitted from the image receiving unit into a digital signal A video conversion module for converting and a And an image management server for receiving, storing, and managing a wireless video signal transmitted from the integrated wireless video transmission device, wherein the video management server includes the integrated wireless video transmission device, A server side transmission / reception unit for receiving a wireless video signal transmitted from a wireless video transmission device; an image management unit for converting a video signal transmitted from the server side transmission / reception unit into a video signal of a form capable of storing; And a server control unit for controlling the image management server.

According to another embodiment of the present invention, in the image processing system using the integrated wireless video transmission apparatus according to the present invention, the control unit includes a control management unit for controlling peripheral devices and controlling input / output of peripheral devices, And the control unit controls the image processing unit and the radio processing unit to process both.

According to another embodiment of the present invention, there is provided an image processing system using an integrated wireless video transmission apparatus according to the present invention, wherein the wireless transceiver is configured to transmit, to the wireless transceiver, And the load applied to the wireless transceiver is minimized by driving only the functions necessary for transmitting signals.

According to another embodiment of the present invention, there is provided an image processing system using an integrated wireless video transmission apparatus according to the present invention, wherein the wireless processing unit includes a Wi-fi processing module for processing a compressed digital video signal into a Wi- And the wireless transceiver includes a Wi-fi wireless module having a wireless communication scheme of the IEEE 802.11n standard.

According to another embodiment of the present invention, in the image processing system using the integrated wireless video transmission apparatus according to the present invention, the wireless processing unit includes an LTE processing module for processing a compressed digital video signal into an LTE wireless signal, The wireless transceiver includes an LTE wireless module having a wireless mobile communication scheme of the LTE standard.

According to another embodiment of the present invention, there is provided an image processing system using an integrated wireless image transmission apparatus according to the present invention, wherein the wireless transceiver includes a Wi-fi module having a wireless communication scheme of the IEEE 802.11n standard, The LTE module includes a Wi-Fi processing module, an LTE processing module, and a signal sensing module. The signal sensing module senses the strength of a surrounding radio signal and transmits the signal to the controller And the controller selectively drives the Wi-fi processing module and the LTE processing module according to the intensity information of the signal detection module.

According to another embodiment of the present invention, in the image processing system using the integrated wireless video transmission apparatus according to the present invention, the video management server periodically acquires an image transmitted from the integrated wireless video transmission apparatus, And an image verification unit for requesting retransmission when a wireless video signal is not received from the integrated wireless video transmission apparatus, wherein the integrated wireless video transmission apparatus includes a video management server A retransmission unit for acquiring an image from the camera according to a retransmission instruction of the integrated wireless video transmission apparatus and transmitting the acquired image to the video management server; And an error correction unit for correcting the error.

According to another embodiment of the present invention, there is provided an image processing system using an integrated wireless video transmission apparatus according to the present invention, wherein the scanning management unit periodically includes an image acquisition module for acquiring an image stored in the storage unit, An error checking module for comparing the image information acquired through the module with the image information that has been stored in advance to check for an error; And a comparison module for comparing the image information judged to be erroneous with the image information obtained by the request of the instruction module and judging whether the error is temporary.

The present invention can obtain the following effects by the above-described embodiment, the constitution described below, the combination, and the use relationship.

The present invention relates to an apparatus for wirelessly transmitting an image photographed by a camera, the apparatus comprising: an image receiving unit for receiving a video signal photographed by a camera; a video image processing unit for converting a video signal transmitted from the image receiving unit into a digital signal, And a control unit for controlling the image receiving unit, the image processing unit, and the wireless transmitting / receiving unit. The control unit controls the peripheral device, And controlling the input / output of the peripheral device to be able to process the video processing unit and the wireless processing unit at the same time, thereby configuring the wireless video transmission device as a single unit, It is possible to build a wide range of CCTV system easily and economically. There are effective.

The present invention includes a control management unit that drives only the functions necessary for transmitting a video signal processed by a wireless signal among the functions of the wireless transceiver unit so that the load applied to the wireless transceiver unit is minimized, It is possible to stably transmit the image and maintain the communication with the image management server that receives the image.

The present invention simplifies the conventional system structure that is required to be interlocked and installed through a complicated process by integrating IP addresses assigned to each of the video processing unit and the wireless transmission unit into a single wireless video transmission apparatus, The maintenance and repair convenience can be improved, and the installation and operation cost can be reduced.

The present invention includes a Wi-fi module for transmitting a wireless signal of the IEEE 802.11n standard (maximum speed: 300 Mbps, effective data rate: 150 Mbps) so that a large amount of image information and a high quality image can be transmitted over a long distance, Ports, military facilities, etc., it is possible to construct a large-scale CCTV system even in areas where it is difficult to install CCTV environmentally.

The present invention adopts the wireless module of LTE (Long Term evolution) instead of the Wi-fi of the IEEE 802.11 standard and transmits the video using the existing LTE public network, so that even in a smart phone and a tablet PC connected to the LTE public network, Can be confirmed.

The present invention provides a wireless communication system including a wireless processing unit including a Wi-fi processing module, an LTE processing module, and a signal sensing module for sensing a strength of a surrounding wireless signal, and includes a wireless transceiver including a Wi-fi module and an LTE module, The wireless processing unit selectively uses the Wi-fi processing module and the LTE processing module according to the strength of the wireless signal sensed by the signal sensing module, so that the video of the surveillance area can be transmitted through various methods, Can be confirmed.

The present invention provides a wireless image transmission apparatus including an integrated wireless image transmission apparatus including a retransmission unit and an error correction unit so that the operation state of the wireless image transmission apparatus can be remotely recognized and managed, In a large-scale CCTV system in which a plurality of wireless video transmission devices are installed at a long distance which can not be visually confirmed by checking periodically transmitted video information, checking errors, and confirming reception of video in real time, It is possible to identify the problem of the apparatus and manage the system.

1 is a configuration diagram showing a conventional wireless image processing system;
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an image processing system using an integrated wireless image transmission apparatus.
3 is a block diagram illustrating an image processing system using an integrated wireless video transmission apparatus according to an embodiment of the present invention.
FIG. 4 is a block diagram showing the video processing unit of FIG. 3;
5 is a block diagram illustrating an image processing system using an integrated wireless video transmission apparatus according to another embodiment of the present invention.
6 is a block diagram illustrating an image processing system using an integrated wireless video transmission apparatus according to another embodiment of the present invention.
7 is a flowchart showing a processing procedure of the image processing system of FIG. 6;
8 is a block diagram illustrating an image processing system using an integrated wireless video transmission apparatus according to another embodiment of the present invention.
9 is a flowchart showing an operation procedure of the scanning management unit of FIG.

An integrated wireless video transmission apparatus and an image processing system using the same according to the present invention will be described in detail with reference to the accompanying drawings. It is to be noted that the same elements among the drawings are denoted by the same reference numerals whenever possible. Unless defined otherwise, all terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs and, if conflict with the meaning of the terms used herein, It follows the definition used in the specification.

FIG. 2 is a block diagram illustrating an image processing system using an integrated wireless image transmission apparatus according to an embodiment of the present invention. FIG. 3 is a block diagram illustrating an image processing system using an integrated wireless image transmission apparatus according to an embodiment of the present invention. FIG. 4 is a block diagram showing the video processing unit of FIG. 3; FIG. FIG. 5 is a block diagram illustrating an image processing system using an integrated wireless image transmission apparatus according to another embodiment of the present invention. FIG. 6 is a block diagram illustrating an image processing system using an integrated wireless image transmission apparatus according to another embodiment of the present invention. And FIG. 7 is a flowchart showing a processing procedure of the image processing system of FIG. FIG. 8 is a block diagram illustrating an image processing system using an integrated wireless video transmission apparatus according to another embodiment of the present invention, and FIG. 9 is a flowchart illustrating an operation process of the scanning management unit of FIG.

2 to 4, an integrated wireless video transmission apparatus 2 for wirelessly transmitting an image photographed by the camera 1 includes a wireless communication unit An image receiving unit 21 connected to the camera 1 and receiving an image signal photographed by the camera 1, and a controller 21 for converting and compressing the image signal transmitted from the image receiving unit 21 into a digital signal, A wireless transmitting and receiving unit 23 for transmitting a wireless signal transmitted from the image processing unit 22 and an image receiving unit 21 and an image processing unit 22. The image processing unit 22 processes a digital image signal as a wireless signal, , And a control unit (24) for controlling the wireless transceiver (23).

The image receiving unit 21 is connected to the camera 1 in a wired manner and is controlled by the control unit 24 to receive SD analog video or HD-SDI video signals of various channels. Accordingly, it is possible to configure a CCTV system in which analog cameras and digital HD cameras are mixed. For example, when analogue images of four channels are connected, conventionally, as shown in FIG. 1, eight image processing units 101 and wireless It is possible to install and maintain a large-scale CCTV system at an economical cost by allowing the transmitter unit 102 to be installed as a single unit and managing the integrated one IP address.

The image processing unit 22 converts the image signal transmitted from the image receiving unit 21 into a digital signal and compresses the digital image signal and processes the digital image signal compressed by the image processing unit 22 into a wireless signal, An image processing unit 221 for converting and compressing the image signal transmitted from the image receiving unit 21 into a digital signal and a radio processing unit 222 for processing the compressed digital image signal into a radio signal, Lt; / RTI >

The image processing unit 221 includes a video conversion module for converting a video signal transmitted from the video receiving unit 21 into a digital signal and converting the video signal transmitted from the video receiving unit 21 into a digital signal, 221a and an image compression module 221b for compressing the digital image signal converted by the image conversion module 221a. The image conversion module 221a is connected to the image receiving unit 21 by a digital camera And can be controlled not to be driven when receiving a digital video signal. The image compression module 221a may be configured as a CODEC for compressing a digital image signal in the form of H.264, MPEG4, MPEG2, MJPEG, or the like, and may also include other types of compression schemes Can be applied.

The wireless processing unit 222 processes the compressed digital video signal into a wireless signal under the control of the controller 24, and can process the Wi-fi wireless signal including the Wi-fi processing module 222a. In other words, the Wi-fi processing module 222a transmits the compressed video signal to the Wi-fi module 231 via the Wi-fi module 231 in the wireless transceiver 23, And converts it into a radio signal.

5, the wireless processing unit 222 may include an LTE processing module 222b instead of the Wi-fi processing module 222a to process the LTE wireless signal. The LTE processing module 222b transmits the digital video signal compressed by the video processing unit 221 to the wireless transceiver 23 through an LTE module 232 to transmit an LTE radio signal through an LTE module 232, Signal.

6, the radio processing unit 222 includes both the Wi-fi processing module 222a and the LTE processing module 222b and is capable of detecting the strength of the Wi-fi signal and the LTE signal The Wi-fi processing module 222a and the LTE processing module 222b may be selectively used including the signal detection module 222c. The signal detection module 222c detects the surrounding Wi-fi signal and the LTE signal, measures the strength of the Wi-fi signal, and provides the control unit 24 with information of a strong signal to the Wi-fi processing module 222a And select one of the LTE processing modules 222b. Converts the digital image signal compressed by the image processing unit 221 into a Wi-fi wireless signal or an LTE wireless signal according to a module of the selected wireless processing unit 222 through the signal detection module 222c, (23). Accordingly, it is possible to configure a system capable of selecting a type of a wireless signal according to a communication environment and continuously transmitting wireless video.

The radio processing unit 222 is controlled by the control management unit 241 that controls the peripheral devices and controls the input / output of the peripheral devices, so that the radio processing unit 222 can simultaneously perform processing with the video processing unit 221. Accordingly, the video processing unit 221 and the wireless processing unit 222 can be simultaneously processed by the control unit 24 to configure the video processing unit 22, and the integrated wireless video transmission apparatus 2 And a single unit. The control management unit 241 will be described later in detail.

The wireless transceiver 23 includes a Wi-fi module 231 for transmitting a wireless signal transmitted from the image processor 22 as shown in FIG. 3, and is controlled by the controller 24. The Wi-fi module 231 has functions such as AP (access point), client, bridging, and repeating, but only the functions necessary for transmitting the video signal processed by the control signal by the control manager 241 are driven. The wireless signal transmitted from the wireless transceiver 23 is received by a video management server 3 for storing and managing video. The Wi-fi module 231 is connected to the video management server 3, And a client function for establishing a wireless network. Therefore, the wireless transmitting / receiving unit 23 can maintain a stable communication state while receiving a minimum load. The control management unit 241 will be described later in detail.

The Wi-fi module 231 has a wireless communication scheme of the IEEE 802.11n standard. The IEEE 802.11n wireless communication system uses the 2.4GHz or 5GHz frequency band and has a maximum speed of 300Mbps and an effective data rate of 150Mbps, which is a wireless LAN technology that dramatically improves the data transmission capacity using a multi-antenna scheme and a multi- It is possible to transmit a large amount of data at a high speed as compared with a conventional wireless method, and to transmit a wireless signal to a long distance of several km. Therefore, when the wireless communication method of the IEEE 802.11n standard is applied to the integrated wireless video transmission apparatus 2, it is possible to transmit a large amount of image information and a high quality image at a high speed, and since it has an effective transmission rate of 150 Mbps, Even if loss of data due to transmission is taken into consideration, the compressed video signal can be transmitted to a long distance without loss. As a result, it is possible to construct a large-scale CCTV system even in areas where it is difficult to install CCTV in a large scale, such as factories, ports, military facilities.

5, the wireless transceiver unit 23 may include an LTE module 232 having a wireless mobile communication system of the LTE standard. The LTE module 232 may include the wireless processing unit 222 transmits the wireless video signal using the existing LTE public network when the LTE processing module 222b includes the LTE processing module 222b. The long term evolution (LTE) wireless mobile communication method has a maximum speed of 100 Mbps in the wireless standard between the 3G mobile communication and the 4th generation (4G) mobile communication, Can be minimized and transmitted. 6, when the wireless processing unit 222 includes both the Wi-fi processing module 222a and the LTE processing module 222b, the wireless transmitting / receiving unit 23 transmits the Wi-fi And may be selectively used according to a signal of the controller 24 including both the module 231 and the LTE module 232. 7, the Wi-fi processing module 222a and the LTE processing module 222b are selectively driven according to the strength of a signal sensed by the signal sensing module 222c, The wireless signal is transmitted through the Wi-fi module 231 and the LTE module 232.

3, the control unit 24 controls the image receiving unit 21, the image processing unit 22, and the wireless transmitting and receiving unit 23, and controls the peripheral devices and the input / (241). The control unit 24 includes an operating system for controlling the integrated wireless video transmission device 2 as a whole. The operating system may include various forms, but it is preferable that the operating system is composed of Linux that can be applied to various systems and can be installed economically.

The control management unit 241 includes a kernel indicating a core part of the operating system. The kernel may also be a Linux kernel and is a program that controls peripheral devices included in the system and controls input / output of peripheral devices. The control management unit 241 controls the video processing unit 221 and the wireless processing unit 222 to be processed by a single control unit 24 using a Linux kernel, So that only the function necessary for video transmission among the functions of the wireless transmission / reception unit 23 is driven so as to minimize the load applied to the wireless transmission / reception unit 23. [

8, the integrated wireless video transmission apparatus 2 receives video data from the camera 1 in accordance with a retransmission instruction of the video management server 3, (2), and acquires an image from the camera (1) immediately after the error correction to check the error of the integrated wireless image transmission device (2) And an error correction unit (26) for transmitting to the server (3).

As shown in FIG. 8, the retransmission unit 25 checks the error of the integrated wireless video transmission apparatus 2 installed far away from the receiving side in a large-scale wireless CCTV system, and performs seamless video transmission in a wireless communication environment Lt; / RTI > As described above, the integrated wireless video transmission device 2 is composed of one unit, and is installed in a position difficult to visually recognize because the long-range wireless communication method is installed so as to be installed far away from the receiving side. Therefore, it is essential to install a management control system that can grasp the operation state of the integrated wireless video transmission device 2. [ The retransmission unit 25 receives a request for retransmission of video information from the video management server 3 and receives a retransmission request from the video receiving unit 21 to the video processing unit 22, To the video management server (3) via the transmission / reception unit (23). The retransmission unit 25 operates in two cases. When the video management server 3 makes a retransmission request for an error check, the video management server 3 detects a temporary error It is possible to judge whether or not. In addition, when the video management server 3 does not receive the video information and requests a retransmission, even if the surrounding wireless environment is unstable due to the retransmission of the video information of the retransmission unit 25, have. A detailed description will be given later in the section related to the image processing system.

The error correction unit 26 is configured to check the error of the integrated wireless video transmission device 2 and acquire an image from the camera 1 immediately after the error correction and transmit the acquired image to the video management server 3, If the video information can not be transmitted due to a temporary error of the integrated wireless video transmission apparatus 2 despite the fact that the unit 25 receives a request for retransmission of the video information from the video management server 3, If the error of the device 2 is recovered, the image is immediately transmitted, so that the management control system can be efficiently operated.

2 to 7, an image processing system using the integrated wireless video transmission device 2 includes a wireless communication unit (not shown) And a video management server 3 for receiving, storing, and managing wireless video signals transmitted from the integrated wireless video transmission device 2 and the integrated wireless video transmission device 2.

The camera 1 may include a digital camera capable of capturing a plurality of analogue or HD-SDI images, and is wired to the integrated wireless video transmission device 2. Since the integrated wireless video transmission apparatus 2 has been described above, the detailed description will be omitted.

As shown in FIG. 3, the video management server 3 includes a server-side transceiver 31 for receiving a radio signal transmitted from the integrated wireless video transmission device 2 and a server- A storage unit 33 for storing a video signal converted by the video management unit 32 and a control unit 32 for controlling the video management server 3 And a server control unit 34 for controlling the server.

The server side transceiver unit 31 can receive the Wi-fi radio signal transmitted from the integrated wireless video transmission apparatus 2, and when the integrated wireless video transmission apparatus 2 transmits the LTE wireless signal It can be configured to receive LTE radio signals. In addition, when the integrated wireless video transmission apparatus 2 includes both the Wi-fi module 231 and the LTE module 232, it is possible to receive both the Wi-fi wireless signal and the LTE wireless signal selectively transmitted. .

The video management unit 32 converts a radio signal received by the server-side transceiver unit 31 into a video signal of a form capable of being stored. It is possible to restore the original image that can be output by decompressing it, or to convert the image signal into a video signal to be simply stored.

The storage unit 33 may include various types of storage devices such as a computer, an external hard disk, and a video recorder capable of storing video signals, and may be a portable storage device or a smart phone capable of receiving an LTE wireless signal It is possible.

The server control unit 34 controls the entire video management server 3 and maintains communication with the integrated wireless video transmission device 2. [

Accordingly, an image processing process of the image processing system using the integrated wireless video transmission apparatus 2 according to an embodiment of the present invention will be described with reference to FIG. 7, The video signal received by the video receiving unit 21 is converted into a digital signal by the video processing unit 221 and is compressed. The compressed image signal is processed into a Wi-fi or LTE radio signal by the radio processing unit 222 according to a detection signal of the signal detection module 222c, and is transmitted from the radio transmission / reception unit 23. The transmitted radio signal is received by the server side transceiver 31 of the video management server 3 and converted into a form that can be stored in the video manager 32 and stored in the storage unit 33.

8 to 9, in the image processing system, the video management server 3 periodically transmits (transmits) video data to and from the integrated wireless video transmission apparatus 2 A scanning management unit 35 for acquiring a video image and checking whether there is an error, and an image check unit 35 for requesting retransmission when a wireless video signal is not received from the server side transceiver unit from the integrated wireless video apparatus 2, Wherein the integrated wireless video transmission apparatus 2 acquires an image from the camera 1 according to a retransmission instruction of the video management server 3 and transmits the retransmitted video to the video management server 3 And an error correction unit 26 for detecting an error of the integrated wireless video transmission device 2 and acquiring an image from the camera 1 immediately after the error correction and transmitting the acquired image to the video management server 3 artillery And it characterized in that.

The details of the retransmission unit 25 and the error correction unit 26 are the same as those described above and will not be described below.

The scanning management unit 35 includes an image acquisition module 351 for periodically acquiring images stored in the storage unit 33 as shown in FIG. 8, and an image acquisition module 351 for acquiring image information acquired through the image acquisition module 351 An error checking module 352 for checking an error, an instruction module 353 for requesting the retransmission unit 25 to transmit an image if there is an error, video information judged as an error, And a comparison module 354 for comparing the image information acquired from the image information acquisition unit 25 and determining whether the image information is a temporary error.

9, the image acquisition module 351 acquires images stored in the storage unit 33 at predetermined time intervals to check for errors To the error checking module 352.

The error checking module 352 determines whether an error has occurred from the image information transmitted from the image acquiring module 351. The loss rate, the image quality, the transmission speed, etc. when the integrated wireless video transmission apparatus 2 normally operates, and if there is an error, the instruction module 353 ).

If the error checking module 352 judges that there is an error, the instruction module 353 instructs the retransmission unit 5 to transmit the image information to the retransmission unit 5 through the server side transceiver unit 31 and the wireless transceiver unit 23, . This is a step for revealing whether the error occurred is due to a temporary error or a defect of the integrated video transmission apparatus 2. [ The retransmission unit 25, which has requested the video information, transmits the video information to the video management server 3 according to the signal of the instruction module 353. As described above, the image information transmitted through the image receiving unit 21, the image processing unit 22, and the wireless transmission / reception unit 23 of the integrated wireless video transmission device 2 is transmitted to the server side transmission / (31) to the comparison module (354).

The comparison module 354 compares the video information for which the first error has been determined and the video information received from the retransmission unit 25 through the request to determine whether the error is a temporary error. The comparison module 354 compares the video information transmitted through the retransmission unit 25 with the video information stored in advance according to the instruction of the instruction module 353, and when the normal video information is transmitted, It is determined that the integrated wireless video transmission apparatus 2 has an error. If the error video information is continuously transmitted, it is determined that the integrated wireless video transmission apparatus 2 is in error, and a notification signal is transmitted to the server control unit 34 so that appropriate measures can be taken. Accordingly, it is possible to construct an image processing system capable of efficiently managing the integrated wireless video transmission device 2 by determining whether an error has occurred through two confirmation processes. Therefore, the CCTV system can be easily managed and operated remotely, and it is possible to efficiently manage even a large-scale CCTV system through an error checking process through two confirmation processes.

The image verification unit 36 is a unit for requesting retransmission when the wireless video signal is not received from the server side transmission / reception unit 31 from the integrated wireless video transmission device (2). When the server communication unit 31 of the video management server 3 fails to receive the video from the integrated wireless video transmission apparatus 2 due to the unstable wireless communication environment, the video verification unit 36 transmits the wireless signal And sends a signal for requesting the retransmission unit 25 to retransmit the video information. The image checking unit 36 checks whether a radio signal arrives at the server side transceiver 31 in real time and sends a signal for requesting retransmission continuously until the video information is transmitted again. Accordingly, it is possible to construct a system for minimizing a dropout of a video image of a surveillance region even in a wireless communication environment.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Should be interpreted as falling within the scope of.

100: Conventional wireless image transmission system
110: image processing unit 120: wireless transmission unit 130: wireless transmission antenna
140: wireless receiving antenna 150: wireless receiving unit 160: storage unit
1: Camera
2: Integrated wireless video transmission device
21:
22:
221: video processing unit 221a: video conversion module 221b: video compression module
222:
222a: Wi-fi processing module 222b: LTE processing module 222c: Signal detection module
23: wireless transceiver 231: Wi-fi module 232: LTE module
24: control unit 241:
25: retransmission unit 26: error correction unit
3: Video management server
31: server-side transmitting / receiving unit 311: Wi-fi receiving module 312: LTE receiving module
32:
33:
34:
35: Scanning manager 351: Image acquiring module 352: Error checking module
353: instruction module 354: comparison module
36:

Claims (10)

delete delete An image receiving unit connected to the camera and receiving a video signal photographed by the camera;
A video processor for converting a video signal transmitted from the video receiver into a digital signal and compressing the digital signal; and a wireless processor for processing the digital video signal compressed by the video processor into a wireless signal;
A wireless transmission / reception unit for transmitting a wireless signal transmitted from the image processing unit;
And a control unit for controlling the image receiving unit, the image processing unit, and the wireless transmitting / receiving unit,
Wherein the image processing unit includes an image conversion module for converting an analog image signal transmitted from the image receiving unit into a digital signal and an image compression module for compressing the digital signal converted by the image conversion module,
The control unit includes a control management unit for controlling peripheral devices and controlling input / output of peripheral devices, and is controlled by the control management unit to process both the video processing unit and the wireless processing unit,
Wherein the wireless transmitting / receiving unit minimizes a load applied to the wireless transmitting / receiving unit by driving only functions necessary for transmitting a video signal processed by the wireless signal among functions of the wireless transmitting / receiving unit under the control of the control managing unit. Device. The method of claim 3,
Wherein the wireless processing unit includes a Wi-fi processing module for processing a compressed digital video signal into a Wi-fi wireless signal,
Wherein the wireless transceiver includes a Wi-fi module having a wireless communication scheme of the IEEE 802.11n standard. The method of claim 3,
Wherein the radio processing unit includes an LTE processing module for processing a compressed digital video signal into an LTE radio signal,
Wherein the wireless transceiver includes an LTE module having a wireless mobile communication scheme of the LTE standard. The method of claim 3,
The wireless transceiver includes a Wi-fi module having a wireless communication scheme of the IEEE 802.11n standard and an LTE module having a wireless mobile communication scheme of the LTE standard,
Wherein the wireless processing unit includes a Wi-fi processing module, an LTE processing module, and a signal detection module,
The signal sensing module senses the strength of a surrounding radio signal and transmits the signal to the controller. The controller selectively drives the Wi-fi processing module and the LTE processing module according to the strength information of the signal sensing module Integrated wireless video transmission device. 7. The method according to any one of claims 3 to 6,
The integrated wireless video transmission apparatus includes:
A retransmission unit for acquiring an image from the camera according to a retransmission instruction of a video management server and transmitting the acquired image to the video management server; And an error correction unit for transmitting the error correction information to the server. A camera for monitoring a specific area,
An integrated wireless video transmission apparatus for converting an image photographed by the camera into a digital signal, compressing and transmitting the digital signal wirelessly,
And a video management server for receiving, storing, and managing wireless video signals transmitted from the integrated wireless video transmission device,
Wherein the integrated wireless video transmission apparatus is the integrated wireless video transmission apparatus according to any one of claims 3 to 6,
The image management server includes a server side transmission / reception unit for receiving a wireless video signal transmitted from the integrated wireless video transmission device, a video management unit for converting a video signal transmitted from the server side transmission / reception unit into a video signal of a form capable of storing, A storage unit for storing the video signal converted by the video management unit, and a server control unit for controlling the video management server. 9. The method of claim 8,
Wherein the video management server periodically acquires an image transmitted from the integrated wireless video transmission apparatus and can check whether the video is erroneous or not, and a wireless communication unit that receives a wireless video signal from the integrated wireless video transmission apparatus And an image confirmation unit for requesting retransmission when the mobile station has not received the retransmission request,
The integrated wireless video transmission apparatus comprising: a retransmission unit for acquiring an image from the camera according to a retransmission instruction of the video management server and transmitting the acquired image to the video management server; And an error correction unit that obtains an image from the image management server and transmits the image to the image management server. 10. The method of claim 9,
The scanning management unit,
An image acquiring module that acquires images stored in the storage unit periodically;
An error checking module that compares the image information acquired through the image acquiring module with previously stored image information to check an error;
An instruction module for requesting the retransmission unit to transmit an image again if it is determined by the error checking module that the image is an error;
And a comparison module for comparing the video information determined as having an error with the video information acquired by the request of the instruction module to determine whether the video is temporarily erroneous.

Images