KR100881371B1 - Apparatus of transmitting real time moving picture using wireless multiple access, apparatus of receiving real time moving picture using wireless multiple access, apparatus of transmitting/receiving real time moving picture using wireless multiple access and method thereof - Google Patents

Abstract

The real-time video transmission apparatus by wireless multiple access includes a video encoding unit, a video segmentation unit and a video transmission unit. The video encoding unit encodes the input video contents. The video segmentation unit divides the encoded video contents in a time division and parallel manner, and packetizes the divided video contents to generate a plurality of divided frames. The video transmission unit sequentially transmits each divided frame in a parallel manner through a plurality of channels. Therefore, even when using a portable device, by transmitting and receiving video using a plurality of channels of the same type or different types, it is possible to reduce costs, improve transmission efficiency, and secure transmission stability. It will be able to transmit real-time video without using large SNG and ENG equipment of broadcasting company, so it will be a very necessary device for organizing live broadcasting programs of broadcasting companies.

Description

Real-time video transmission device by wireless multi-connection, real-time video reception device by wireless multi-connection, real-time video transmission and reception device by wireless multi-connection, and real-time video transmission and reception method by wireless multi-connection {APPARATUS OF TRANSMITTING REAL TIME MOVING PICTURE USING WIRELESS MULTIPLE ACCESS, APPARATUS OF RECEIVING REAL TIME MOVING PICTURE USING WIRELESS MULTIPLE ACCESS, APPARATUS OF TRANSMITTING / RECEIVING REAL TIME MOVING PICTURE USING WIRELESS MULTIPLE ACCESS AND METHOD THEREOF}

1 is a conceptual diagram illustrating a real-time video transmission and reception apparatus by wireless multiple access according to an embodiment of the present invention.

FIG. 2 is a block diagram schematically illustrating an apparatus for transmitting and receiving a real time video by wireless multiple access of FIG. 1.

FIG. 3 is a block diagram illustrating in detail a real-time video transmission apparatus by wireless multiple access shown in FIG. 1.

FIG. 4 is a detailed block diagram illustrating an apparatus for receiving real time video by wireless multiple access shown in FIG. 1.

5 is a block diagram showing a real-time video transmission and reception apparatus by wireless multiple access according to another embodiment of the present invention.

6 is a flowchart illustrating a real-time video transmission method by wireless multiple access according to an embodiment of the present invention.

7 is a flowchart illustrating a method for receiving real-time video by wireless multiple access according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

100: real-time video transmission and reception device by wireless multiple access

200: Real-time video transmission device by wireless multiple access

210: video encoding unit 220: video segmentation unit

230: video transmission unit 240: input interface

300: Real time video receiving device by wireless multiple access

310: video receiving unit 320: video focusing unit

330: video decoding unit 340: output interface

The present invention relates to a real-time video transmission apparatus using a wireless multiple access, a real time video reception apparatus using a wireless multiple access, a real time video transmission and reception apparatus using a wireless multiple access, and a real time video transmission and reception method using a wireless multiple access. Real time video transmission device by wireless multiple access, real time video transmission device by wireless multiple access, real time video transmission and reception by wireless multiple access It relates to a real-time video transmission and reception method.

In general, where a broadcaster or a live video feed is needed, electronic news gathering (ENG) equipment using microwave ground stations or areas where this is not possible use satellite news gathering (SNG) equipment. Live broadcast. However, when using these equipments, there is a problem that the cost increases, the size increases, which causes inconvenience to move, and the power consumption increases. In addition, live broadcasts are not possible in areas where microwave ground stations are not available or where satellites cannot communicate. In addition, it is more difficult to broadcast a moving object as a video. Thus, a research into a method for transmitting and receiving video using mobile communication has been in progress.

Recently, due to the rapid development of technology in the mobile communication field, it has provided the next generation wireless multimedia service such as video and multimedia transmission using a mobile phone. In particular, the site uses a High Speed Donloading Packet Access (HSDPA) network or WiBro network (hereinafter referred to as a wireless broadband network) that overcomes the limitations of the existing Code Division Multiple Access (CDMA) X1. There is a need for a video transmission / reception apparatus and a video transmission / reception apparatus for live broadcasting of an image of a wireless communication. Here, the wireless broadband network is defined by a dedicated high speed downlink standard to compensate for the high speed downlink packet data transmission with the existing CDMA-2000 1X as the Internet connection such as web browsing increases in mobile communication. A wireless access technology standard optimized for high speed and high capacity data transmission.

The downlink speed of the wireless broadband network is guaranteed up to 2Mbps so that it is not difficult to watch a video or search the Internet. However, since the uplink speed of the wireless broadband network is difficult to secure a speed of 230 Kbps or more, problems such as interruption or interruption of the video in the field occur. As a result, the quality of the video is degraded and thus it is not applicable to a broadcasting medium such as a TV.

Accordingly, the present invention has been made in view of such a conventional problem, and the present invention provides a real-time video transmission apparatus using wireless multiple access, which can improve transmission efficiency and secure transmission stability by transmitting and receiving video using a plurality of channels. to provide.

In addition, the present invention provides a real-time video reception apparatus by wireless multiple access corresponding to the real-time video transmission apparatus by the wireless multiple access.

In addition, the present invention provides a real-time video transmission and reception apparatus by wireless multiple access having the above-mentioned real-time video transmission apparatus by wireless multiple access and the real-time video reception apparatus by wireless multiple access.

In addition, the present invention provides a real-time video transmission method by wireless multiple access for transmitting and receiving video using the video transmission and reception device.

The apparatus for transmitting real time video by wireless multiple access according to the above-described aspect of the present invention includes a video encoding unit, a video segmentation unit, and a video transmission unit. The video encoding unit encodes input video contents. The video segmentation unit divides the encoded video contents by time division and parallel methods, and packetizes the divided video contents to generate a plurality of divided frames. The video transmission unit sequentially transmits each of the divided frames through a plurality of channels in a parallel manner.

The video transmission unit transmits the divided frames through a wireless broadband network using a wireless data modem. The video transmission unit includes a sliding window buffer for sequentially transmitting the divided frames.

The plurality of channels are assigned priority, and the highest priority channel is a control channel, which controls order of transmission frames, visual synchronization for real-time video transmission, and replacement of bad channels. Thereafter, the plurality of channels are assigned a priority, and the priority is the ratio of frames actually transmitted to the maximum frames that can be transmitted per second. The video transmission unit transmits a first divided frame among the divided frames through a channel to which the priority is assigned.

One or more channels assigned a lower priority among the plurality of channels are dummy channels and are allocated as backup channels to replace when a failure occurs among the frame transmission channels.

The apparatus for receiving real time video by wireless multiple access according to the above-described aspect of the present invention includes a video receiving unit, a video focusing unit, and a video decoding unit. The video receiver receives a plurality of divided frames sequentially transmitted in a parallel manner through a plurality of channels. The moving image focusing unit sequentially concentrates the received divided frames to generate moving image contents. The video decoding unit decodes the focused video contents.

The video receiver includes a sliding window buffer that sequentially receives the received divided frames and sequentially transmits the divided frames.

The apparatus for transmitting and receiving real-time video by wireless multiple access according to the above-described aspect of the present invention includes a video encoding unit, a video splitting unit, a video transmitting unit, a video receiving unit, a video focusing unit, and a video decoding unit.

The video encoding unit encodes input video contents. The video segmentation unit divides the encoded video contents by time division and parallel methods, and packetizes the divided video contents to generate a plurality of divided frames. The video transmission unit sequentially transmits each of the divided frames through a plurality of channels in a parallel manner. The video receiving unit receives a plurality of divided frames sequentially transmitted in a parallel manner through the plurality of channels. The moving image focusing unit sequentially concentrates the received divided frames to generate moving image contents. The video decoding unit decodes the focused video contents.

The video transmission unit transmits the divided frames through a wireless broadband network using a wireless data modem.

According to one or more embodiments of the present invention, a method for transmitting and receiving real-time video by wireless multiple access includes: encoding input video contents, time-dividing the encoded video contents, and transmitting and receiving video contents through a wireless communication network. Generating a plurality of divided frames by dividing by a parallel scheme and packetizing the divided multimedia contents, sequentially transmitting each divided frame through a plurality of channels by a parallel scheme, and transmitting the plurality of channels. Receiving a plurality of divided frames transmitted sequentially in a parallel manner through the step, by sequentially converging the received divided frames to generate video content and decoding the focused video content.

The step of transmitting the divided frame transmits through the wireless broadband network using a wireless data modem.

The plurality of channels are assigned a priority, and the priority is a ratio of a frame to be actually transmitted to the maximum frames that can be transmitted per second, and among the divided frames, a channel to which the first divided frame is assigned the highest priority. Send it through.

According to such a real-time video transmission apparatus using a wireless multiple access, a real time video reception apparatus using a wireless multiple access, a real time video transmission and reception apparatus using a wireless multiple access, and a real time video transmission and reception method using a wireless multiple access, a video using a plurality of channels By transmitting and receiving the data, it is possible to transmit a video without establishing a separate communication network having a high uplink speed. Therefore, communication cost can be reduced, transmission efficiency can be improved, and transmission stability can be ensured.

With respect to the embodiments of the present invention disclosed in the text, specific structural to functional descriptions are merely illustrated for the purpose of describing embodiments of the present invention, embodiments of the present invention may be implemented in various forms and It should not be construed as limited to the embodiments described in.

As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

On the other hand, when an embodiment is otherwise implemented, a function or operation specified in a specific block may occur out of the order specified in the flowchart. For example, two consecutive blocks may actually be performed substantially simultaneously, and the blocks may be performed upside down depending on the function or operation involved.

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the present invention.

1 is a conceptual diagram illustrating a real-time video transmission and reception apparatus by wireless multiple access according to an embodiment of the present invention, and FIG. 2 is a block diagram briefly showing a real-time video transmission and reception apparatus by wireless multiple access of FIG. 1.

1 and 2, the real-time video transmission and reception apparatus 100 by wireless multiple access includes a real-time video transmission apparatus 200 by wireless multiple access and a real-time video reception apparatus 300 by wireless multiple access. .

The real-time video transmission apparatus 200 by wireless multiple access includes a video encoding unit 210, a video segmentation unit 220, and a video transmission unit 230.

The video encoding unit 210 encodes video content input from at least one external device 250. That is, the video encoding unit 210 performs an encoding operation of converting analog video content input from the external device 250 into digital video content.

The video segmentation unit 220 divides the encoded video contents by time division and parallel methods. That is, the video segmentation unit 220 divides a large amount of video contents into a plurality of times by a time division method. The video segmentation unit 220 generates a plurality of divided frames by packetizing the divided video contents according to a predetermined criterion. Each of the divided frames may include various types of data packets. For example, each of the divided frames may include a header including information about the number of the divided frames and a payload including the divided video contents.

The video transmitting unit 230 sequentially transmits each divided frame through a plurality of channels CH1_1 to CH1_10 in a parallel manner. The video transmitter 230 includes a sliding window buffer that sequentially transmits divided frames.

The video transmission unit 230 transmits the divided frames through a wireless broadband network using a wireless data modem. In the present embodiment, the video transmitter 230 transmits divided frames using HSDPA, which is a wireless communication network of a mobile phone. In this case, the video transmitter 230 may transmit the divided frames in a hybrid transmission method in which two or more methods are mixed among transmission methods such as HSDPA, WiBro, and satellite.

The video transmission unit 230 sequentially transmits divided frames in a parallel manner using the plurality of channels CH1_1 to CH1_10. The top channel CH1_1 is a control channel that is responsible for controlling the order of transmission frames, visual synchronization for real-time video transmission, and replacement of bad channels. Hereinafter, the plurality of channels CH1_2 to CH1_9 are assigned a priority, and the priority is defined as the ratio of a frame actually transmitted to the maximum frames that can be transmitted per second.

Meanwhile, one or more channels assigned a low priority among the plurality of channels may be used as the dummy channel CH1_10. The dummy channel CH1_10 is allocated as a backup channel to replace when a failure occurs among the plurality of channels CH1_2 to CH1_9.

In this case, when the control channel itself becomes a bad channel, the control channel may be replaced with a channel CH1_2 or a dummy channel CH1_10 that is temporarily assigned a high priority.

The real-time video receiver 300 by wireless multiple access includes a video receiver 310, a video focusing unit 320, and a video decoding unit 330.

The video receiver 310 receives a plurality of divided frames sequentially transmitted in a parallel manner through a plurality of channels CH2_2 to CH2_9. In this case, the video receiver 310 may receive the control signal transmitted through the control channel CH2_1 and the divided frames transmitted through the plurality of channels CH2_2 to CH2_9. For example, each channel CH2_1 to CH2_9 may include a transmission port. The video receiver 310 receives a plurality of divided frames transmitted from the video transmitter 230 using a plurality of channels CH2_1 to CH2_9 through a wireless communication network. At this time, the video receiving unit 310 includes a sliding window buffer for receiving and sequentially receiving the received divided frames.

The video focusing unit 320 sequentially collects the received divided frames to generate video contents. The video focusing unit 320 generates a plurality of video contents having a relatively large capacity by focusing a plurality of divided frames packetized according to a predetermined criterion. That is, the video focusing unit 320 focuses the divided frames sequentially transmitted from the video receiving unit including the sliding window buffer into the video contents.

The video decoding unit 330 decodes focused video contents. The video decoding unit 330 converts the digital video contents into analog video contents for playback in a video.

In another embodiment, the video transmission apparatus 200 may further include a location signal generator (not shown) for generating a location signal in real time, and transmit the location signal through the channels CH1_1 to CH1_10. have. Therefore, the video receiving apparatus 300 may determine the position of the video transmitting apparatus 200 in real time. In this case, the position signal generation unit may generate a position signal by using a global positioning system (GPS).

FIG. 3 is a block diagram illustrating in detail a real-time video transmission apparatus by wireless multiple access shown in FIG. 1.

2 and 3, the apparatus 200 for real-time video transmission by wireless multiple access includes a video encoder 210, a video divider 220, and a video transmitter 230.

The video encoding unit 210 encodes video content input from at least one external device 250. That is, the video encoding unit 210 performs an encoding operation of converting analog video content input from the external device 250 into digital video content.

The video encoding unit 210 converts analog video content into a digital video file (MPEG2, MPEG4, H.264 format, etc.) that can be recognized by a computer. Specifically, the video encoding unit 210 converts the video content of the analog form from a 6m / m camcorder or a general video camera into a video file according to the required size (HD quality, SD quality or 320 ㅧ 240) to the video splitter send.

The video contents may include at least one selected from a text, a video, an audio signal, and a location information signal. That is, the video contents may be composed of only one of a text, a video, and an audio signal. In general, video contents related to transmission and reception of a video have a triple format including all the text, video, and audio signals.

Meanwhile, the real-time video transmission apparatus 200 by wireless multiple access further includes an input interface 240 that receives analog video content from one or more external devices 250. That is, analog video content from the external device 250 is input to the video encoding unit 210 through the input interface 240. In the present invention, a camera, a camcorder, a mobile phone camera, etc. may be used as the external device 250.

The video segmentation unit 220 divides the encoded video contents by time division and parallel methods, and packetizes the divided video contents to generate a plurality of divided frames.

The video segmentation unit 220 divides a large amount of video contents into a plurality of times by a time division method. The division criterion of the time division method is preferably 0.125 seconds (1/8 second), and 4 frames per channel are transmitted and 32 frames are transmitted in the case of 8 channels, and may be variously changed according to video contents to be divided. have. In contrast, the video divider 220 may divide the video contents in parallel by a frequency division method.

The video transmission unit 230 sequentially transmits each divided frame through a plurality of channels CH1_2 to CH1_9 in a parallel manner. The video transmitter 230 includes a sliding window buffer that sequentially transmits divided frames.

The video transmission unit 230 transmits the divided frames through a wireless broadband network using a wireless data modem. In the present embodiment, the video transmitter 230 transmits divided frames using HSDPA, which is a wireless communication network of a mobile phone. At this time, the video transmission unit 230 transmits in parallel by using a wireless data (HSDPA) modem multiplexed to the USB hub. Alternatively, the video transmission unit 230 may transmit using a satellite communication network. In addition, the video transmitter 230 may transmit the data using a wireless broadband Internet (Wibro) network.

The video transmission unit 230 sequentially transmits divided frames in a parallel manner using a plurality of channels CH1_2 to CH1_9. In the present embodiment, one video transmission unit 230 is assigned 10 channels. In contrast, the video transmission unit 230 may transmit the divided frames using 10 or less channels.

The plurality of channels CH1_2 to CH1_9 are assigned a priority, and the priority is defined as the ratio of frames actually transmitted to the maximum frames that can be transmitted per second. For example, if the MPEG system complies with the CCIR 601 standard of the International Radiocommunication Advisory Committee, the MPEG system supports a rate of 30 frames per second.

Buffering and channel priority are determined by the quality of the wireless data network. At this time, the video transmission unit 230 transmits the first divided frame among the divided frames through the channel CH1_2 assigned with the highest priority except for the highest channel CH1_1. Here, the first divided frame may be the first frame among the divided frames. Also, the first divided frame may be the most important frame among the divided frames. Accordingly, the video transmission unit 230 may improve the efficiency and stability of video transmission by transmitting the leading frame or the important frame through the channel CH1_2 having priority. In general, as the number of channels increases, the quality of the resolution and the like of the video increases. In contrast, the relationship between the number of channels and the quality of the video is not necessarily directly proportional, but is variable because it is influenced by surrounding variables. This series of processes can be handled by predetermined software.

Meanwhile, one or more channels assigned a low priority among the plurality of channels CH1_1 to CH1_10 may be used as the dummy channel CH1_10. The dummy channel CH1_10 may be used as a replacement channel when a failure occurs among a plurality of channels. On the contrary, when a failure occurs in any one of the plurality of channels CH1_1 to CH1_10, two or more divided frames are used by using a high-priority channel having a high transmission speed without using the dummy channel CH1_10. You can also send.

FIG. 4 is a detailed block diagram illustrating an apparatus for receiving real time video by wireless multiple access shown in FIG. 1.

2 and 4, the real-time video receiving apparatus 300 by wireless multiple access includes a video receiving unit 310, a video focusing unit 320, and a video decoding unit 330.

The video receiving unit 310 receives a plurality of divided frames sequentially transmitted in a parallel manner through the plurality of channels CH2_1 to CH2_10. The video receiver 310 receives a plurality of divided frames transmitted using a plurality of channels CH2_1 to CH2_10 corresponding to the channels CH1_1 to CH1_10 of the video transmitter 230 through a wireless communication network. . At this time, among the plurality of channels CH2_1 to CH2_10 connected to the video receiver 310, the highest priority channel CH2_1 may be a control channel and at least one channel CH2_10 assigned a low priority may be a dummy channel. At this time, the video receiving unit 310 includes a sliding window buffer for receiving and sequentially receiving the received divided frames.

The video receiver 310 determines the buffering and channel priority according to the quality of the wireless communication network. This determines the channel priority in the same way as the video transmitter 230. For example, if the MPEG system complies with the CCIR 601 standard of the International Radiocommunication Advisory Committee, the MPEG system supports a rate of 30 frames per second.

The video focusing unit 320 sequentially collects the received divided frames to generate video contents. The video focusing unit 320 generates a plurality of video contents having a relatively large capacity by focusing a plurality of divided frames packetized according to a predetermined criterion. That is, the video focusing unit 320 focuses the divided frames sequentially transmitted from the video receiving unit 310 including the sliding window buffer into the video contents.

The video decoding unit 330 decodes focused video contents. The video decoding unit 330 converts the digital video contents into analog video contents for playback in a video. That is, the video contents are decoded, i.e., decoded so that the encoded video contents can be reproduced through the video reproducing apparatus for easy recognition on a computer. Accordingly, the video decoding unit 330 transmits the decoded video contents to the external playback device 350.

On the other hand, the real-time video receiving apparatus by wireless multiple access further includes an output interface 340 for outputting the decoded video content to the external playback device (350). The external reproducing apparatus 350 may be a monitor and an analog video signal terminal. Therefore, the external playback device 350 reproduces the video content input through the output interface 340 as a video in a predetermined manner. The external reproducing apparatus 350 may collect the video contents and play the video on a full screen or part of a screen size (Picture-in-Picutre: PIP) and display the video. For example, the external reproducing apparatus 350 reproduces the video content converted into an analog signal as an image. At this time, the external playback device 350 includes an editing unit (not shown), and the editing unit receives video contents in the form of digital data, and performs various types of editing operations through processing of advertisements, subtitles, and the like. It may be.

In the present embodiment, the real-time video transmission apparatus using the wireless multiple access can transmit the TV broadcast video in real time using five channels of the HSDPA network, which is a wireless communication network of the mobile phone. Therefore, it is possible to relay live broadcast in real time using the real-time video transmission / reception apparatus by wireless multiple access without large broadcast equipment such as a broadcast relay vehicle.

5 is a block diagram showing a real-time video transmission and reception apparatus by wireless multiple access according to another embodiment of the present invention.

Referring to FIG. 5, the real-time video transmission / reception apparatus using wireless multiple access may include a first external device 250, a first video transmission device 200, a second external device 251, and a second video transmission device 201. ), The third external device 252, the third video transmission device 202, the fourth external device 253, the fourth video transmission device 203, the wireless communication network, the video reception device 301, and the playback device 351. ).

Each of the external devices 250, 251, 252, and 253 and the video transmission devices 200, 201, 202, and 203 transmits real-time video by external devices and wireless multiple access shown in FIGS. 1 and 2. Since the structure is the same as that of the device, the detailed description is omitted.

In the present embodiment, each of the video transmission apparatuses 200, 201, 202, and 203 divides and encodes the encoded video contents by time division and parallel methods. That is, each video segmentation unit of each of the video transmission apparatuses 200, 201, 202, and 203 divides each video content into a plurality of times by a time division method, and packetizes the divided video contents according to a predetermined criterion. Create frames. For example, each divided frame may include a header including information about the number of the divided frames and information about the number of the video transmitting apparatuses 200, 201, 202, and 203, and the divided video contents. It may include a payload that includes.

The external devices 250, 251, 252, and 253 and the video transmission devices 200, 201, 202, and 203 transmit video of various sites spaced apart from each other through different channel groups. In this case, the video transmission apparatuses 200, 201, 202, and 203 may be alternately driven to transmit images of only one of the sites alternately, or two or more video transmission apparatuses 200, 201, 202, and 203 may be alternately driven. ) May simultaneously transmit images corresponding to two or more sites.

The video receiving device 301 includes a video receiving unit 311, a video focusing unit 321, and a video decoding unit 331.

The video receiving unit 311 receives a plurality of divided frames sequentially transmitted in a parallel manner through the respective channel groups. When the two or more video transmitting apparatuses 200, 201, 202, and 203 transmit images corresponding to two or more sites, the video of the channel groups is simultaneously received by the video receiving unit 311. In this embodiment, the number of channels in each channel group is 5 to 10. For example, when the first and second video transmission apparatuses 200 and 201 transmit an image, the total number of channels for transmitting the two images may be 10-20.

The video focusing unit 321 sequentially focuses the received divided frames to generate video content. In this case, when two or more images are applied to the video receiving unit 311, the divided frames corresponding to each image are sequentially focused independently of each other to generate respective image contents.

The video decoding unit 331 decodes focused video contents. In this case, when the video focusing unit 321 generates two or more video contents, the video decoding unit 331 simultaneously decodes the video contents.

The decoded video content is transmitted to the external playback device 351 to display an image.

According to the present embodiment, a video may be transmitted at the same time with respect to an event occurring in real time in various sites spaced apart from each other. Thus, the spatial constraints of live broadcasting can be overcome.

6 is a flowchart illustrating a video transmission method according to an embodiment of the present invention, and FIG. 7 is a flowchart illustrating a video reception method according to an embodiment of the present invention.

Referring to FIGS. 2, 6, and 7, the video transmitting / receiving method includes a method of transmitting and receiving video contents through a wireless communication network, encoding the input video contents (S100), time-dividing and parallel encoding the encoded video contents. Generating a plurality of divided frames by packetizing the divided multimedia content by the plurality of divided multimedia contents (S110), sequentially transmitting each divided frame through a plurality of channels in a parallel manner (S120), and providing a plurality of channels. Receiving a plurality of divided frames sequentially transmitted in a parallel manner through the (S130), generating the video content by sequentially converging the received divided frames (S140) and decoding the focused video content ( S150).

The video encoding unit 210 encodes video content input from at least one external device 250. That is, the video encoding unit 210 performs an encoding operation of converting analog video content input from the external device 250 into digital video content.

The video segmentation unit 220 divides the encoded video contents by time division and parallel methods. The video segmentation unit 220 generates a plurality of divided frames by packetizing the divided video contents according to a predetermined criterion.

The video transmission unit 230 sequentially transmits each divided frame through a plurality of channels in a parallel manner. The video transmission unit 230 transmits the divided frames through a wireless broadband network using a wireless data modem.

A plurality of channels are assigned a priority, which is defined as the ratio of frames actually transmitted to the maximum frames that can be transmitted per second. The channel assigned the highest priority is the control channel, which is responsible for controlling the order of transmission frames, visual synchronization for real-time video transmission, and replacing defective channels. Among the divided frames, the first divided frame is transmitted through a channel to which the priority is allocated except for the control channel. For example, the first divided frame may be the first frame among the divided frames.

The video receiver 310 receives a plurality of divided frames sequentially transmitted in a parallel manner through a plurality of channels. In this case, the channel assigned with the highest priority among the channels connected to the video receiving unit 310 may be a control channel, and the lowest priority channel may be a dummy channel. The video receiver 310 includes a sliding window buffer which sequentially receives the received divided frames and sequentially transmits them.

The video focusing unit 320 sequentially collects the received divided frames to generate video contents. The video focusing unit 320 generates a plurality of video contents having a relatively large capacity by focusing a plurality of divided frames packetized according to a predetermined criterion.

The video decoding unit 330 decodes focused video contents. The video decoding unit 330 converts the digital video contents into analog video contents for playback in the video.

Therefore, in transmitting a video using the real-time video transmission and reception apparatus 100 by wireless multiple access, the video contents are divided into divided frames and transmitted and received using a plurality of channels, thereby improving transmission efficiency and speed. have.

According to such a real-time video transmission apparatus using a wireless multiple access, a real time video reception apparatus using a wireless multiple access, a real time video transmission and reception apparatus using a wireless multiple access, and a real time video transmission and reception method using a wireless multiple access, the video transmission apparatus is encoded. The video contents are divided in a time division and parallel manner, and the divided video contents are packetized to generate a plurality of divided frames, and each divided frame is sequentially transmitted in a parallel manner through a plurality of channels.

In addition, despite the use of a mobile device communication network having a low uplink speed, which makes video transmission difficult, it is possible to transmit and receive video using a plurality of channels. Therefore, it is possible to transmit a video without establishing a separate communication network having a high uplink speed, thereby reducing communication costs, improving transmission efficiency, and securing transmission stability.

In particular, it is possible to relay in real time the TV broadcast in real time using the real-time video transmission and reception apparatus by the wireless multiple access without a large broadcast equipment such as a broadcast relay vehicle. In addition, by using a plurality of video transmission apparatus, it is possible to overcome the time and space constraints of live broadcasting.

In the detailed description of the present invention described above with reference to a preferred embodiment of the present invention, those skilled in the art or those skilled in the art having ordinary knowledge in the scope of the invention described in the claims to be described later It will be understood that various modifications and variations can be made in the present invention without departing from the scope of the present invention.

Claims (17)

A video encoding unit encoding input video contents; A video segmentation unit that divides the encoded video contents by time division and parallel methods, and packetizes the divided video contents to generate a plurality of divided frames; And In the real-time video transmission apparatus using a wireless multiple access comprising a video transmission unit for sequentially transmitting the packetized divided frames through a plurality of channels in a parallel manner, The video transmission unit comprises a sliding window buffer for sequentially transmitting the divided frames, the real-time video transmission apparatus by wireless multiple access. delete A video encoding unit encoding input video contents; A video segmentation unit that divides the encoded video contents by time division and parallel methods, and packetizes the divided video contents to generate a plurality of divided frames; And In the real-time video transmission apparatus using a wireless multiple access comprising a video transmission unit for sequentially transmitting the packetized divided frames through a plurality of channels in a parallel manner, The plurality of channels are assigned a priority, and the priority is a real-time video transmission apparatus according to the wireless multiple access, characterized in that the order of the ratio of the frame actually transmitted to the maximum frames that can be transmitted per second. The apparatus of claim 3, wherein the highest priority channel among the channels is a control channel. 5. The apparatus of claim 4, wherein the control channel transmits signals for order control of the divided frames, time synchronization for real time video transmission, and replacement of a bad channel. 6. The method of claim 4, wherein the video transmission unit transmits the first divided frame through a channel assigned the highest priority among the remaining channels except the control channel among the divided frames. Real time video transmission device. The apparatus of claim 6, wherein the at least one channel assigned the lowest priority among the plurality of channels is a dummy channel. A video encoding unit encoding input video contents; A video segmentation unit that divides the encoded video contents by time division and parallel methods, and packetizes the divided video contents to generate a plurality of divided frames; And In the real-time video transmission apparatus using a wireless multiple access comprising a video transmission unit for sequentially transmitting the packetized divided frames through a plurality of channels in a parallel manner, The video content is a real-time video transmission apparatus using a wireless multiple access, characterized in that at least one selected from the text, video, audio signal and location information signal. A video encoding unit encoding input video contents; A video segmentation unit that divides the encoded video contents by time division and parallel methods, and packetizes the divided video contents to generate a plurality of divided frames; And In the real-time video transmission apparatus using a wireless multiple access comprising a video transmission unit for sequentially transmitting the packetized divided frames through a plurality of channels in a parallel manner, The apparatus for real-time video transmission by wireless multiple access, further comprising an input interface for receiving analog video content from at least one external device. A video receiving unit which receives a plurality of divided frames sequentially transmitted in a parallel manner through a plurality of channels; A video focusing unit configured to sequentially focus the received divided frames to generate video content; And In the real-time video receiving apparatus by wireless multiple access comprising a video decoding unit for decoding the focused video content, The video receiver comprises a sliding window buffer for receiving and sequentially receiving the received divided frames, real-time video receiver by wireless multiple access. delete In the system for transmitting and receiving video content through a wireless communication network, A video encoding unit encoding input video contents; A video segmentation unit that divides the encoded video contents by time division and parallel methods, and packetizes the divided video contents to generate a plurality of divided frames; A video transmission unit for sequentially transmitting the respective divided frames through a plurality of channels in a parallel manner; A video receiving unit which receives a plurality of divided frames sequentially transmitted in a parallel manner through the plurality of channels; A video focusing unit configured to sequentially focus the received divided frames to generate video contents; And In the real-time video transmission and reception apparatus by wireless multiple access comprising a video decoding unit for decoding the focused video content, The video transmission unit is a real-time video transmission and reception apparatus using a wireless multiple access, characterized in that for transmitting the divided frames over a wireless broadband network using a wireless data modem. delete In the system for transmitting and receiving video content through a wireless communication network, A video encoding unit encoding input video contents; A video segmentation unit that divides the encoded video contents by time division and parallel methods, and packetizes the divided video contents to generate a plurality of divided frames; A video transmission unit for sequentially transmitting the respective divided frames through a plurality of channels in a parallel manner; A video receiving unit which receives a plurality of divided frames sequentially transmitted in a parallel manner through the plurality of channels; A video focusing unit configured to sequentially focus the received divided frames to generate video contents; And In the real-time video transmission and reception apparatus by wireless multiple access comprising a video decoding unit for decoding the focused video content, Video transmission devices including the video encoding unit, the video division unit, and the video transmission unit and disposed at various sites spaced from each other; And And a video receiving device including the video receiving unit, the video focusing unit, and the video decoding unit. In the system for transmitting and receiving video content through a wireless communication network, Encoding the input video contents; Dividing the encoded video contents in a time division and parallel manner and packetizing the divided multimedia contents to generate a plurality of divided frames Sequentially transmitting the packetized divided frames through a plurality of channels in a parallel manner; Receiving a plurality of divided frames sequentially transmitted in a parallel manner through the plurality of channels; Generating moving image content by sequentially concentrating the received divided frames; And In the real-time video transmission and reception method by wireless multiple access comprising the step of decoding the focused video content, The plurality of channels are assigned a priority, wherein the priority is a ratio of frames to be actually transmitted relative to the maximum frames that can be transmitted per second, the channels being the highest priority control channel and one or more assigned low priority. The channel is a real-time video transmission and reception method by wireless multiple access, characterized in that it comprises a dummy channel. The method of claim 15, wherein transmitting the divided frame is Real-time video transmission and reception method using a wireless multiple access, characterized in that for transmitting over a wireless broadband network using a wireless data modem. delete

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