KR101289758B1 - Transmission system and method for variable streaming of hd media - Google Patents

Abstract

PURPOSE: A high definition (HD) image variable streaming transmission system and a transmission method thereof are provided to solve a problem that a recognition rate drops due to a low resolution image quality. CONSTITUTION: An image generating device (100) transmits image signals generated in real time to a variable type image terminal (200). The variable type image terminal encodes the image signals after classifying the image signals according to resolution. A streaming server (300) transmits monitoring signals for controlling the resolution of images received corresponding to the situation of a monitored communication bandwidth to the variable type image terminal. The streaming server separately stores HD image signals received through a file transmitting protocol.

Description

HD video variable streaming transmission system and transmission method {Transmission system and method for variable streaming of HD media}

The present invention relates to an HD video variable streaming transmission system and a transmission method. More particularly, the present invention relates to an HD video variable streaming transmission system and a transmission method. HD video signal is transmitted using a separate file transfer protocol (FTP) to maintain the backup file in high quality, improving the review function, and secured even in an open communication environment based on IP through encryption of the transmitted video. The present invention relates to an HD video variable streaming transmission system and a transmission method.

Streaming services that provide multimedia content such as video or animation through CCTV, UCC, etc. in real time are being activated. Streaming refers to a technique that downloads and plays video, sound, and animation files from the Internet to a hard disk drive in real time without downloading. The streaming technique allows the client browser or plug-in to start presenting data even before all the files are transferred. Therefore, if the play time is shortened, the capacity of the hard disk drive is also hardly affected.

However, when providing a high-definition video stream in a service of an IP-based wired and wireless network environment, the available bandwidth of the receiving terminal is reduced due to network congestion, jitter, etc., loss of transmission data packets occurs, and seamless video streaming There is a problem that is difficult to provide services.

Although there is a way to solve the problem by adjusting the number of frames transmitted in response to the communication bandwidth, there is a lack of aspect to solve the screen disconnection in the situation of maintaining the resolution. Korean Patent Publication No. 10-1249613 (Registration Date: March 26, 2013) discloses a variable stream layering method that adapts to a network, but the prior art selectively removes a frame in a GOP, or a video stream. By adjusting the hierarchical structure, deterioration of the image quality can be prevented, but there is a problem that the screen is not broken.

In general, in the case of using the CCTV to prevent criminal activity, rather than using real-time video, most of the situation is to dig up the criminal activity based on the stored historical video. In this case, unless the image quality of CCTV is high-definition, it is not easy to clearly identify the crime. In the prior art, there is a limitation in that a separate backup file cannot be stored in a high picture quality only for streaming a real-time image, and also there is a problem that security is vulnerable because image data can be easily exposed.

KR 10-1249613 B1 2013. 03. 26.

The present invention was created to solve the problems of the prior art, and according to the present invention, instead of removing the frame or varying the bit rate, by transmitting at different resolutions according to the variable communication bandwidth, seamless continuous video transmission The present invention relates to an HD video variable streaming transmission system and a transmission method for enabling the above, improving a review function by storing a backup file as an HD high definition video signal, and enabling security maintenance through video encryption.

HD video variable streaming transmission system of the present invention for achieving the above object, an image generating device for generating a video signal in real time in a state arranged outside and transmitting to a variable video terminal, and a video signal received from the video generating device Are encoded according to resolution, and the video signals corresponding to the real-time situation of the communication bandwidth among the encoded video signals for each resolution are transmitted, or the HD video signals are stored and then transmitted separately using a file transfer protocol. And real-time monitoring of the communication bandwidth and transmitting a monitoring signal for adjusting the resolution of the received image in response to the monitored communication bandwidth to the variable video terminal, or separately receiving the HD high definition video signal received through the file transfer protocol. Consisting of a streaming server to store The features.

The variable video terminal of the present invention includes an image input unit for receiving real-time image signals generated from an image generating apparatus, an encoding unit for dividing the image signals received from the image input unit by screen resolution, and an image signal encoded through the encoding unit. The terminal storage unit for storing the HD high-definition video signal, the real-time transmission of the encoded video signal to the streaming server or the real-time receiving of the monitoring signal transmitted from the streaming server or the HD high-definition video signal stored in the terminal storage unit to the streaming server In response to the monitoring signal transmitted from the terminal communication unit and the streaming server to generate a control signal to be transmitted by varying the resolution of the video signal according to the real-time situation of the communication bandwidth or stored in the terminal storage unit at the request of the variable streaming server HD High Definition Terminal control unit for generating a control signal for transmitting a signal.

In addition, the streaming server of the present invention generates a transmission signal for real-time monitoring of the communication bandwidth, and transmits to the variable video terminal to be communicated by comparing the received signal and the transmission signal received from the variable video terminal corresponding to the transmission signal Bandwidth monitoring unit for generating a monitoring signal to determine the resolution of the video signal, server storage unit for storing the HD high-definition video signal received through the file transfer protocol, receiving the video signal transmitted in real time through the variable video terminal or the bandwidth Monitor the communication bandwidth by controlling the server communication unit and the bandwidth monitoring unit to transmit the monitoring signal generated by the monitoring unit to the variable video terminal or to receive the HD high-definition video signal transmitted through the variable video terminal and to respond to the situation of the communication bandwidth Be Generating a control signal to send a monitoring signal to the variable image device or the server comprises a control unit for generating a control signal to transmit a high-quality HD image signal stored in the variable image device.

On the other hand, in the HD video variable streaming transmission method, a real-time video signal generated from an externally generated video generating apparatus is received by a variable video terminal, the received video signal is encoded by resolution in the variable video terminal by encoding Real time monitoring of the communication bandwidth through communication between the streaming server and the variable video terminal, and encrypting the video signal to be transmitted according to the communication bandwidth of the encoded video signals classified by resolution And transmitting the encrypted video signal from the variable video terminal to the streaming server in real time.

In the real-time monitoring of the communication bandwidth according to the present invention, the initial SPPTG is set by the streaming server, the detection packet stream generated by the set SPPTG is transmitted to the variable video terminal, RPPTG corresponding to the SPPTG is A step of determining whether the difference between the received RPPTG and the SPPTG is within a set threshold value and whether or not the difference between the received RPPTG and the SPPTG is within a predetermined threshold value and the result of the determination is within the threshold value. The HD video signal transmission request is made to the terminal, or when the difference between the RPPTG and the SPPTG is out of the threshold, a low quality video signal transmission is made.

According to another embodiment, in the HD video variable streaming transmission method, a real-time video signal generated from an externally generated video generating apparatus is received by a variable video terminal, and the received video signal is classified by resolution in the variable video terminal. And encoding the HD video signal among the encoded video signals encoded by resolution, and transmitting the encrypted HD video signal from the variable video terminal to the streaming server through a file transfer protocol. The HD high-definition video signal is characterized in that the step of storing in the streaming server.

According to the present invention, since the image quality of the transmitted image is changed according to the communication bandwidth situation, there is an advantage that seamless continuous image transmission can be performed even in a poor communication bandwidth.

In addition, according to the present invention, since it is possible to transmit and store HD high-definition video signal through a separate file transfer protocol, there is an effect that solves the problem caused by the lowering of the recognition rate due to low resolution image quality, and the review function through the high-definition video is improved. .

In addition, according to the present invention, there is an advantage that security can be maintained even in an IP-based open communication environment through encryption of a transmitted image.

1 is a view showing a HD video variable streaming transmission system according to the present invention.
Figure 2 is a block diagram showing a variable video terminal according to the present invention.
3 is a block diagram showing a streaming server according to the present invention.
Figure 4 is a flow chart illustrating a HD video variable streaming transmission method according to the present invention.
5 is a view showing another embodiment of a real-time transmission method of HD video variable streaming transmission method according to the present invention.
6 is a flowchart illustrating a communication bandwidth monitoring process of the HD video variable streaming transmission method according to the present invention.
7 is a view for explaining a method for measuring the state of the communication bandwidth in accordance with the present invention.

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

1 is a view showing a HD video variable streaming transmission system according to the present invention. As shown in FIG. 1, the present invention may be composed of an image generating apparatus 100, a variable image terminal 200, and a streaming server 300. The streaming server may transmit the image generated by the image generating device to another user terminal through the communication network.

The image generating apparatus 100 may be a video generating apparatus including a CCTV camera, a camcorder, and the like, and the image generating growth value may also be capable of generating a full HD image. In addition, the video raw growth value may be generated including an audio signal. The video live growth value is generated in real time and is transmitted to the variable video terminal in a state arranged outside.

The image growth value may be formed in plural, and each image growth value may be matched with the variable image terminal 200 by 1: 1 matching. The variable video terminal has a function of receiving and storing an image generated from an image generating device and transmitting a generated image signal to a streaming server 300 to be described later.

The variable video terminal 200 is connected to the streaming server 300 through a communication network. The communication network may be Ethernet based on TCP / IP, and may be a wireless communication network using WIFI. The variable video terminal may encode the video signals received from the video generating device by resolution and transmit the video signals corresponding to the real-time situation of the communication bandwidth among the encoded video signals for each resolution. In addition, the file transfer protocol (FTP) can be used to separately transmit and receive HD high-definition video signal. In the state where the FTP-only program is provided in the variable video terminal and the streaming server, a large-capacity HD high-definition video signal may be periodically transmitted or received as necessary to enable effective review through the generated video.

The streaming server 300 of the present invention may basically be connected to a plurality of variable video terminals. That is, the variable video terminal and the streaming server are connected by N: 1 matching. The streaming server may communicate with the variable video terminal, and may monitor the communication bandwidth in real time and change the resolution of the received video signal by transmitting a control signal to the variable video terminal according to the communication bandwidth. In addition, the streaming server may separately store the HD high-definition video signal received through the file transfer protocol.

2 and 3 are block diagrams respectively illustrating a variable video terminal and a streaming server according to the present invention.

Referring to FIG. 2, the variable video terminal 200 according to the present invention includes a terminal control unit 210, an image input unit 220, an encoding unit 230, a terminal encryption unit 240, a terminal communication unit 250, and a buffer 260. ) And a terminal storage unit 270.

The image input unit 220 receives a video signal generated from the image generating apparatus 100 in real time. The image input unit may receive the image and the audio received from the image generating apparatus through a high-definition multimedia interface (HDMI) terminal, a digital visual interface (DVI) terminal, a D-sub (D-Subminiature) terminal, and the like.

The encoder 230 compresses and converts the video signal received through the video input unit 220. When the image signal received through the image generating device is digital data, only compression may be performed. However, when the image signal is received as analog data, the image signal may be converted into digital data and then compressed. Compression may be performed in various ways, and may use H.264 / AVC, MPEG-2, H.263, MPEG-4 Part 2, and the like. The H.264 / AVC scheme has an advantage of superior compression efficiency and image quality compared to the MPEG-4 scheme. Preferably, the H.264 / AVC scheme is compressed using the H.264 / AVC scheme.

The encoder may convert and compress an image received from the image input unit for each resolution. When the available bandwidth of the communication network is insufficient, it is difficult to transmit HD-quality high-definition video (including full HD video) in real time because video quality deterioration such as image dropping, shape distortion or afterimage appears. Therefore, in the present invention, the HD high definition image or the SD low definition image may be variably transmitted and received according to the real time situation of the communication bandwidth through various compression for each resolution through the encoding unit.

The encoder may compress the different resolutions in real time in response to the communication bandwidth. In this case, the backup HD high-definition video signal stored in the terminal storage unit 270 may be encoded and stored through a separate compression process.

The resolution is expressed by the number of horizontal x vertical pixels forming one frame, and is divided into interlaced scan and progressive scan according to a scanning method. In the case of the SD video signal, the resolution is 720x480i and 720x576i, and in the case of the HD video signal, 1080i60, 1080p30, or 1080p60.

The resolution of the video signal encoded by the encoder appears in various ways. That is, it can be variously converted and transmitted according to the situation of the communication bandwidth, such as 1280 × 1024, 1152 × 864, 1024 × 768, 800 × 600.

The terminal communication unit 250 transmits the video signal encoded through the encoding unit to the streaming server 300 in real time, or receives the monitoring signal transmitted from the streaming server in real time, or HD high-definition video signal stored in the terminal storage unit 270 Send to the streaming server. The encoded video signal may use Real Time Streaming Protocol (RTSP) and Real Time Transport Protocol (RTP), which are communication protocols for transmitting and receiving voice or video in real time, and may be transmitted through a separate communication protocol.

RTSP has the advantage of simultaneously controlling multiple streams of media information in Unicast or Multicast environments. The establishment and release of the communication network can be controlled by the RTSP, and the actual video signal can be transmitted through the RTP, thereby improving the quality of the communication service.

The buffer unit 260 is a place where the encoded video signal is temporarily stored and is intended to solve a problem caused by a speed difference or a time difference that appears when the video signal is transmitted in real time.

The terminal storage unit 270 stores the HD high definition video signal among the video signals encoded by the encoder. The present invention transmits the real-time video signal generated by the image generating device to the streaming server with different resolutions according to the communication bandwidth, and when it is necessary to examine the generated video separately, the problem of recognition rate reduction due to the low resolution image quality is eliminated. In order to solve the problem, the HD video signal can be transmitted to the streaming server separately from the real time video signal transmission and reception.

To this end, an HD-quality high-definition image is encoded through an encoding unit and stored in the terminal storage unit, and periodically or upon request from the streaming server 300, the HD high-definition image signal stored in the terminal storage unit is separately transmitted.

The backup HD high-definition video signal stored in the terminal storage unit may be transmitted using a file transfer protocol (FTP). WWW, which is accessed through the HTTP protocol, has the advantage of being able to use plain text, pictures, music / video contents, etc., but has a problem of slow speed and file control when sending and receiving a large amount of files in a batch. In the present invention, the FTP program is provided in the variable video terminal 200 and the streaming server 300 to transmit and receive a large amount of HD high-definition video signal.

The terminal encryption unit 240 is to solve the security problem that may occur when transmitting the video signal to the streaming server, in conjunction with the server encryption unit 330 to encrypt and transmit the video signal. Protocols that encrypt communication content include TLS (Transport Layer Security) or SSL (Secure Socket Layer). The terminal encryption unit of the variable video terminal provides a terminal certificate to the server encryption unit of the streaming server, the server encryption unit provides a server certificate to the terminal encryption unit. The terminal certificate is responsible for authenticating the variable video terminal communicating with the streaming server, and the server certificate enables the variable video terminal to confirm that it is connected to the streaming server. The verification of the certificate uses a trusted certification authority, and the certificate cannot be accessed without the verification procedure (PIN number, name, password exchange) between the variable video terminal and the streaming server, even in an IP-based open communication environment. Ensure security is maintained.

The terminal controller 210 controls the operation of a variable video terminal including an image input unit 220, an encoder 230, a terminal encryption unit 240, a terminal communication unit 250, and a buffer 260. In particular, in response to the monitoring signal transmitted from the streaming server generates a control signal for transmitting the video signal of different resolution according to the real-time situation of the communication bandwidth, HD high-definition video stored in the terminal storage unit at the request of the streaming server It generates a control signal for transmitting the signal.

Referring to FIG. 3, the streaming server 300 of the present invention includes a server controller 310, a bandwidth monitoring unit 320, a server encryption unit 330, a server communication unit 340, and a server storage unit 350. Can be configured.

The bandwidth monitoring unit 320 generates a transmission signal for real-time monitoring of the communication bandwidth between the variable video terminal 200 and the streaming server 300 and transmits it to the variable video terminal, and the variable image in response to the transmission signal. Comparing the reception signal received from the terminal and the transmission signal to generate a monitoring signal for determining the resolution of the video signal transmitted from the variable video terminal.

The transmission signal may be, for example, a predetermined time gap of the packet pair, and the time gap when the packet pair is received from the variable video terminal may be a reception signal. The bandwidth monitoring unit may generate a signal that the available bandwidth of the communication is sufficient when the difference between the time gap at the time of transmission and the time gap at the time of reception of the packet pair is within a threshold value so that the HD high-definition video signal may be transmitted. When the difference between the time gap at the time of transmission and the time gap at the time of reception exceeds a threshold value, a signal that determines that the communication available bandwidth is insufficient may be generated so that a low quality video signal may be transmitted. A low quality video signal that is differentiated in stages may be transmitted according to a degree in which a difference between a time gap at the time of transmission of a packet pair and a time gap at the time of reception exceeds a threshold.

The server encryption unit 330 is to maintain the security of the image transmitted with the terminal encryption unit 240 of the above-described variable video terminal.

The server communication unit 340 receives a video signal transmitted in real time through the variable video terminal, or transmits the monitoring signal generated through the bandwidth monitoring unit 320 to the variable video terminal, or HD transmitted through the variable video terminal Receive a high quality video signal.

The server storage unit 350 stores the HD high definition video signal received through the file transfer protocol (FTP). The stored image may be reproduced when necessary for review and may be transmitted to an external user terminal (not shown) for reproduction or storage.

The server controller 310 controls an operation of the streaming server including the bandwidth monitoring unit 320, the server encryption unit 330, the server communication unit 340, and the server storage unit 350. Specifically, the control unit monitors the communication bandwidth by controlling the bandwidth monitoring unit, and generates a control signal for transmitting the monitoring signal corresponding to the situation of the communication bandwidth to the variable video terminal, or transmit the HD high-definition video signal stored in the variable video terminal A control signal can be generated.

Although not shown in the drawing, the real-time video signal received through the variable video terminal may be transmitted back to another terminal through the server communication unit. At this time, the video signal may be converted using the RTP / RTSP protocol, and may be transmitted while maintaining security through the TLS encryption algorithm. In addition, HD high-definition video signal stored in the server storage can be transmitted when necessary using FTP.

4 is a flowchart illustrating an embodiment of a method for variable streaming transmission of HD video according to the present invention. The variable streaming transmission method is made through the configuration shown in FIGS. 1 to 3, and the description will be made based on the step-by-step transmission method through the components rather than the description of the components.

In the HD video variable streaming transmission method, first, a real-time video signal generated from an externally generated image generating apparatus 100 is received by the variable video terminal 200 (S100).

Thereafter, the received video signal is encoded according to the resolution by the variable video terminal (S200). The image signal received from the image generating apparatus through the image input unit is compressed and converted in the H.264 / AVC method through the encoder 230. The converted video signal may be implemented in various resolutions.

After the video signal is encoded, the real-time video signal is monitored through the communication between the streaming server 300 and the variable video terminal 200 in real time status of the communication bandwidth (S300). Video signals having different resolutions may be variably transmitted to the streaming server according to the communication bandwidth.

If necessary, the video signal may be encoded to have a resolution corresponding to a communication bandwidth situation in real time. That is, as shown in another embodiment of FIG. 5, the encoding unit 230 reacts in real time to the monitoring signal generated by the bandwidth monitoring unit 320 to change the resolution of the video signal, and the variable video signal is connected to the communication network. Can be transmitted in real time. Therefore, while the communication bandwidth is monitored in real time, the video signal may be converted to have a resolution corresponding to the situation of the communication bandwidth and then transmitted (S200 'to S300').

6 is a flowchart illustrating a communication bandwidth monitoring process of the HD video variable streaming transmission method according to the present invention, and FIG. 7 is a view for explaining a method of measuring a state of a communication bandwidth.

In the step S300 or S200 'in which the real-time status of the communication bandwidth is monitored, an initial SPPTG (Sending Packet Pair Time Gap) is first set by the streaming server (S310). Referring to FIG. 7, the SPPTG represents a predetermined time gap between packet pairs. The packet pair becomes a detection packet, and a plurality of detection packet streams are transmitted to the variable video terminal through a communication network (S320).

The transmitted detection packet stream is received with a Receiving Packet Pair Time Gap (RPPTG) from the variable video terminal (S330). A difference may occur between the received packet pair time gap (RPPTG) and the SPPTG depending on the state of the communication network, that is, the communication bandwidth. If the communication bandwidth is sufficient, the difference between the RPPTG and SPPTG may be formed within the threshold value, but if the communication bandwidth is insufficient, the difference between the RPPTG and SPPTG may be out of the threshold.

The streaming server determines whether the difference between the RPPTG and the SPPTG received from the variable video terminal is within or outside the threshold (S340). If it is determined that the difference between the RPPTG and the SPPTG is within the threshold, it is determined that the communication bandwidth is sufficient (S350), and if it is determined that the threshold is out of the threshold value (S360). The bandwidth monitoring unit of the streaming server may subdivide the range beyond the threshold value, and thus may divide the low quality video transmitted step by step.

Communication bandwidth monitoring is performed by repeating the steps S320 ~ S360, through which real-time communication bandwidth monitoring is possible, and thus it is possible to transmit a video signal having a resolution suitable for the communication bandwidth.

The video signal having a resolution corresponding to the communication bandwidth is subjected to an encryption process during transmission (S400 and S400 '). The terminal encryption unit 240 of the variable video terminal and the server encryption unit 330 of the streaming server may interwork to perform encryption. The TLS protocol may be used to encrypt the communication contents, and if there is no abnormality through the confirmation procedure in the state where the terminal certificate and the server certificate are mutually provided, the image may be transmitted.

After the encryption is made, the video transmission is made in real time from the variable video terminal to the streaming server (S500).

According to another embodiment of the present invention, the HD high-definition video signal of the video signal encoded by the encoding unit is stored in the terminal storage unit for backup and then transmitted according to the request of the streaming server. Referring to FIG. 4, a real time video signal generated from an externally generated image generating apparatus is received by a variable video terminal (S100), and the received video signal is encoded by resolution in the variable video terminal (S200). In operation S600, encryption is performed on the HD high definition video signal among the encoded video signals classified by resolution. The encryption process may be performed in the same manner as described above, and thus a detailed description thereof will be omitted.

The encrypted HD high-definition video signal is transmitted from the variable video terminal to the streaming server through a file transfer protocol (FTP) in the encrypted state (S700), and the transmitted HD high-definition video signal is stored in the streaming server ( S800).

According to the present invention, since the image quality of the transmitted video is different according to the communication bandwidth, continuous video transmission is possible even in a poor communication bandwidth, and the HD video signal is transmitted through a separate file transfer protocol. Because it can be stored, it solves the problem of low recognition rate due to low resolution, improves the review function through high quality video, and has the advantage of maintaining security even in open communication environment based on IP by encrypting the transmitted video. .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100: image generating device
200: variable video terminal
210: terminal controller 220: image input unit
230: encoding unit 240: terminal encryption unit
250: terminal communication unit 260: buffer
270: terminal storage unit
300: streaming server
310: server control unit 320: bandwidth monitoring unit
330: server encryption unit 340: server communication unit
350: server storage unit

Claims (9)

In HD video variable streaming transmission system,
An image generating device for generating an image signal in real time and transmitting the image signal to a variable type video terminal in an external arrangement;
The video signals received from the video generating apparatus are encoded by resolution, and the video signals corresponding to the real-time situation of the communication bandwidth are transmitted among the encoded video signals for each resolution, or the HD video signal is stored and then the file transmission protocol Variable video terminal to transmit separately using; And
Real-time monitoring of the communication bandwidth, and transmits a monitoring signal to the variable video terminal to adjust the resolution of the received image in response to the situation of the monitored communication bandwidth, or separately stores the HD high-definition video signal received through the file transfer protocol Consists of a streaming server,
The streaming server,
A transmission signal for real-time monitoring of a communication bandwidth is generated and transmitted to the variable video terminal, and the resolution of the video signal to be communicated is determined by comparing the transmission signal with the reception signal received from the variable video terminal corresponding to the transmission signal. A bandwidth monitoring unit generating a monitoring signal;
Server storage unit for storing the HD high-definition video signal received through the file transfer protocol;
Server communication unit for receiving a video signal transmitted in real time through the variable video terminal, transmitting the monitoring signal generated through the bandwidth monitoring unit to the variable video terminal, or receives a high-definition video signal transmitted through the variable video terminal ; And
By controlling the bandwidth monitoring unit to monitor the communication bandwidth, generating a control signal for transmitting a monitoring signal corresponding to the situation of the communication bandwidth to the variable video terminal, or to transmit the HD high-definition video signal stored in the variable video terminal HD video variable streaming transmission system comprising a server control unit for generating a control signal.
The method of claim 1,
The variable video terminal,
An image input unit configured to receive a real-time image signal generated from the image generating device;
An encoder for dividing and encoding the video signal received from the video input unit for each screen resolution;
A terminal storage unit for storing an HD high definition video signal among the video signals encoded by the encoding unit;
A terminal communication unit for transmitting an encoded video signal in real time to the streaming server, receiving a monitoring signal transmitted from the streaming server in real time, or transmitting an HD high definition video signal stored in a terminal storage unit to the streaming server; And
In response to the monitoring signal transmitted from the streaming server generates a control signal for transmitting the video signal of different resolution according to the real-time situation of the communication bandwidth, or at the request of the streaming server HD HD video signal stored in the terminal storage unit A terminal controller for generating a control signal for transmitting;
HD video variable streaming transmission system, characterized in that consisting of.
delete The method of claim 2,
The variable video terminal,
HD video variable streaming transmission system characterized in that it further comprises a terminal encryption unit for encrypting the video signal transmitted in real time.
The method of claim 1,
The streaming server,
HD video variable streaming transmission system, characterized in that it further comprises a server encryption unit for encrypting the video signal received in real time.
In the HD video variable streaming transmission method,
Receiving a real-time video signal generated from an externally generated image generating apparatus with a variable video terminal (S100);
Receiving the encoded video signal by dividing the encoded video signal according to the resolution at step S200;
Monitoring a real-time situation of a communication bandwidth through communication between a streaming server and the variable video terminal (S300);
Performing encryption on the video signal to be transmitted according to the situation of the communication bandwidth among the video signals encoded by resolution (S400); And
An encrypted video signal is transmitted in real time to the streaming server from the variable video terminal (S500),
The step S300, in which the real-time situation of the communication bandwidth is monitored,
Setting an initial SPPTG by the streaming server (S310);
Transmitting the detection packet stream generated by the set SPPTG to the variable video terminal (S320);
Generating an RPPTG corresponding to the SPPTG from the variable video terminal and receiving the received streaming server at step S330;
Determining whether the difference between the received RPPTG and the SPPTG is within a set threshold (S340); And
Determining that the HD video signal is transmitted from the streaming server to the variable video terminal when it is within the threshold value (S350), or when the difference between the RPPTG and SPPTG is out of the threshold value, requesting the transmission of the low quality video signal (S360);
HD video variable streaming transmission method, characterized in that consisting of.
In the HD video variable streaming transmission method,
Receiving a real-time video signal generated from an externally generated image generating apparatus with a variable video terminal (S100);
Monitoring a real-time situation of a communication bandwidth through communication between a streaming server and the variable video terminal (S200 ′);
Encoding the resolution of the received video signal in the variable video terminal in response to a real-time situation of the monitored communication bandwidth (S300 ′);
Encrypting the video signal to be transmitted according to a situation of a communication bandwidth among video signals encoded by resolution (S400 '); And
An encrypted video signal is transmitted in real time to the streaming server from the variable video terminal (S500),
S200 'step of monitoring the real-time status of the communication bandwidth,
Setting an initial SPPTG by the streaming server (S310);
Transmitting the detection packet stream generated by the set SPPTG to the variable video terminal (S320);
Generating an RPPTG corresponding to the SPPTG from the variable video terminal and receiving the received streaming server at step S330;
Determining whether the difference between the received RPPTG and the SPPTG is within a set threshold (S340); And
Determining that the HD video signal is transmitted from the streaming server to the variable video terminal when it is within the threshold value (S350), or when the difference between the RPPTG and SPPTG is out of the threshold value, requesting the transmission of the low quality video signal (S360);
HD video variable streaming transmission method, characterized in that consisting of.
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