KR102313533B1 - System for cloud streaming service, method of image cloud streaming service considering full screen transition and apparatus for the same - Google Patents

Abstract

Disclosed are a cloud streaming service system, an image cloud streaming service method in consideration of a change in an entire screen, and an apparatus therefor. The cloud streaming server detects the transition identifier included in the web application execution screen, and when the transition identifier is detected, generates an animation message including animation information to be applied to the entire screen, generates a captured image from the entire screen, and a still image (still image) When a still image-encoded captured image and animation message are transmitted to a user's terminal device using a compression technique, the terminal device applies animation to the captured image to perform a still image-based cloud streaming service. By reducing unnecessary animation processing in the cloud streaming server, the number of web containers that can be run on the server can be increased.

Description

Cloud streaming service system, image cloud streaming service method in consideration of full screen change, and device therefor

The present invention relates to image cloud streaming service technology in consideration of changes in the entire screen. In particular, when a web application server inserts and transmits a transition identifier in a frame, the cloud streaming server detects a change in the entire screen in advance using the transition identifier and It relates to a cloud streaming service system that generates and transmits an animation message to be applied to a user, an image cloud streaming service method in consideration of the entire screen change, and an apparatus therefor.

Due to the recent development of the Internet, the speed of communication using personal mobile communication devices has rapidly improved, and based on this, an Internet environment such as downloading and uploading large amounts of data through remote computer access or logging into a remote computer locally is created. became In addition, as applications driven in a mobile communication terminal such as a smart phone are developed in various ways, virtualization technologies for driving applications requiring high performance in a user terminal with relatively low performance have been widely proposed. Among them, a screen virtualization base that runs an application on the server, compresses the driving screen through video encoding, and transmits it to the client, and the client plays the transmitted video to have the same effect as if the application is running on its own terminal. of cloud streaming services are in the spotlight.

This cloud streaming service basically applies a video codec-based cloud streaming technique, but even when a service such as a menu display is provided, the entire screen is unnecessarily captured and operated using the video codec, resulting in inefficiency of the system as a whole. exist.

Therefore, by generating a captured image for a part that requires a dynamic effect such as animation among the execution result screen of the application executed by the user's request, and transmitting the captured image and animation related information to the user's set-top box, animation in the set-top box A technology that can create a service screen with effects applied is urgently emerging.

Korean Patent Laid-Open Patent No. 10-2012-0096909, published on August 31, 2012 (Name: Merge gateway/set-top box image for delivery to a serviced client device)

It is an object of the present invention, when a web application server inserts and transmits a transition identifier in a frame, the cloud streaming server detects a change in the entire screen in advance using the transition identifier and generates an animation message to be applied to the entire screen, thereby detecting a change area. It is to provide a more efficient image cloud streaming service by reducing the required screen comparison operation.

In addition, an object of the present invention is to capture only a partial area of the web application execution screen in the cloud streaming server, even when not changing the entire screen, and generate a message having animation information to be applied to the corresponding area to display the captured image and message in the set-top box. By sending an animation to the captured image using a message from the set-top box, unnecessary animation processing is reduced and the number of web containers that can be run on the server is increased.

Cloud streaming server according to the present invention for achieving the above object, a screen receiving unit for receiving a web application execution screen from the web application server; a transition identifier detection unit for detecting a transition identifier included in the web application execution screen; an animation message generator for generating an animation message including animation information to be applied to the entire screen when the transition identifier is detected; a capture unit generating a captured image from the entire screen; an encoding unit that encodes the captured image as a still image using a still image compression technique; and a sending unit that transmits the animation message and the still image-encoded captured image to the user terminal so that the user terminal can generate the web application execution screen to perform a still image-based cloud streaming service.

At this time, when the transition identifier is not detected, the cloud streaming server compares the previous frame included in the web application execution screen with the current frame to determine the change area of the current frame changed from the previous frame. further comprising, wherein the animation message generating unit generates an animation message including animation information applied to the change region when the transition identifier is not detected, and the capture unit captures from any one of the frames in the change region. You can create an image.

In this case, the transition identifier may be any one or more pixel coordinates and pixel values among pixels in a frame included in the web application execution screen.

In this case, the transition identifier may be any one or more pixel coordinates and pixel values among pixels located at edges and corners of a frame included in the web application execution screen.

In this case, the change area may be a menu area overlappingly displayed on the main screen among the web application execution screens.

In this case, the captured image may be an image corresponding to the last frame among the frames in the change region.

In this case, the animation message may include an animation type for determining the type of the animation.

In this case, the animation type may be any one of flying up, brightness change, rising, and wiping.

In this case, the animation message may include the animation information corresponding to at least one of an animation type, animation application time, animation repetition number, start coordinates, end coordinates, start size, and end size.

In addition, the image cloud streaming service method in consideration of the change of the entire screen according to the present invention comprises the steps of: receiving a web application execution screen from a web application server; detecting a transition identifier included in the web application execution screen; generating an animation message including animation information to be applied to the entire screen when the transition identifier is detected; generating a captured image from the entire screen; encoding the captured image as a still image using a still image compression technique; and transmitting the animation message and the still image-encoded captured image to the user terminal so that the user terminal can generate the web application execution screen to perform a still image-based cloud streaming service.

At this time, the image cloud streaming service method considering the change of the entire screen compares the current frame with the previous frame included in the web application execution screen when the transition identifier is not detected, and the change of the current frame changed from the previous frame Further comprising the step of determining a region, wherein the generating of the animation message includes generating an animation message including animation information applied to the change region when the transition identifier is not detected, and generating the captured image. The step may generate a capture image from any one of the frames within the change region.

In this case, the transition identifier may be any one or more pixel coordinates and pixel values among pixels in a frame included in the web application execution screen.

In this case, the transition identifier may be any one or more pixel coordinates and pixel values among pixels located at edges and corners of a frame included in the web application execution screen.

In this case, the change area may be a menu area overlappingly displayed on the main screen among the web application execution screens.

In this case, the captured image may be an image corresponding to the last frame among the frames in the change region.

In this case, the animation message may include an animation type for determining the type of the animation.

In this case, the animation type may be any one of flying up, brightness change, rising, and wiping.

In this case, the animation message may include the animation information corresponding to at least one of an animation type, animation application time, animation repetition number, start coordinates, end coordinates, start size, and end size.

According to the present invention, when a web application server inserts and transmits a transition identifier in a frame, the cloud streaming server detects a change in the entire screen in advance using the transition identifier and generates an animation message to be applied to the entire screen, thereby requesting a change area detection It is possible to provide a more efficient image cloud streaming service by reducing the screen comparison operation.

In addition, the present invention captures only a partial area of the web application execution screen in the cloud streaming server, even when not changing the entire screen, generates a message having animation information to be applied to the area, and transmits the captured image and message to the set-top box Then, by applying animation to the captured image using the message from the set-top box, unnecessary animation processing can be reduced, and the number of web containers that can be run on the server can be increased.

1 is a block diagram showing a cloud streaming service system according to an embodiment of the present invention.
FIG. 2 is a block diagram illustrating an example of the cloud streaming server shown in FIG. 1 .
3 is a diagram illustrating a process of performing a cloud streaming service based on a still image according to an embodiment of the present invention.
4A and 4B are diagrams illustrating a transition identifier according to an embodiment of the present invention.
5 is an operation flowchart illustrating an image cloud streaming service method in consideration of a change in an entire screen according to an embodiment of the present invention.
6 is an operation flowchart illustrating a cloud streaming service method according to whether a transition identifier is detected according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, detailed descriptions of well-known functions or configurations that may obscure the gist of the present invention in the following description and accompanying drawings will be omitted. Also, it should be noted that throughout the drawings, the same components are denoted by the same reference numerals as much as possible.

The terms or words used in the present specification and claims described below should not be construed as being limited to their ordinary or dictionary meanings, and the inventor is appropriate as a concept of terms for describing his invention in the best way. It should be interpreted as meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined in Accordingly, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention, and do not represent all of the technical spirit of the present invention. It should be understood that there may be equivalents and variations. In addition, terms such as first, second, etc. are used to describe various components, and are used only for the purpose of distinguishing one component from other components, and are not used to limit the components.

1 is a block diagram showing a cloud streaming service system according to an embodiment of the present invention.

1, the cloud streaming service system according to an embodiment of the present invention is a web application server 105, cloud streaming server 110, terminal devices (120-1, ..., 120-N) and the network ( 130).

Cloud streaming server 110 receives the application result execution screen from the web application server (105).

In addition, the cloud streaming server 110 detects a transition identifier included in the web application execution screen. In this case, the transition identifier may correspond to any one or more pixel coordinates and pixel values among pixels in a frame included in the web application execution screen. For example, the transition identifier is one or more pixel coordinates and pixel values of pixels located at the edges and corners of the frame included in the web application execution screen are preset, and the cloud streaming server 110 is configured to detect the change region. The transition identifier may be detected by first examining the border and corner pixels.

At this time, when the transition identifier is detected, the cloud streaming server 110 generates an animation message including animation information to be applied to the entire screen, and when the transition identifier is not detected, determines the change area and applies the change area An animation message including animation information is generated.

At this time, the cloud streaming server 110 determines a change region of the current frame changed from the previous frame by comparing the current frame with the previous frame included in the web application execution screen. In this case, the change area may be a menu area overlappingly displayed on the main screen among the web application execution screens.

In addition, the cloud streaming server 110 generates an animation message including animation information applied to the change area. In this case, the animation message may include an animation type for determining the type of animation. For example, the animation message may include an animation type corresponding to any one of flying up, brightness change, rising, and wiping. In addition, the animation message may include animation information corresponding to at least one of an animation type, an animation application time, an animation repetition number, a start coordinate, an end coordinate, a start size, and an end size.

In addition, when the transition identifier is detected, the cloud streaming server 110 generates a captured image from the entire screen, and when the transition identifier is not detected, generates a captured image from any one of the frames in the change area. In this case, when generating a captured image from any one of the frames in the change region, the captured image may be an image corresponding to the first frame or the last frame among the frames in the change region.

Also, the cloud streaming server 110 encodes the captured image as a still image using a still image compression technique. In this case, the captured image may be encoded as a still image by using a still image compression technique corresponding to any one of portable network graphics (PNG), paletted portable network graphics (PNG), and joint photography experts group (JPEG).

In addition, the cloud streaming server 110 transmits the still image-encoded captured image and animation message to the user terminal so as to generate a web application execution screen in the terminal devices 120-1, ..., 120-N, and transmits the still image to the user terminal. based cloud streaming service.

The terminal devices 120-1, ..., 120-N receive the application execution result screen corresponding to the cloud streaming service from the cloud streaming server 110 and provide it to the user.

Each of the terminal devices 120-1, ..., 120-N is connected to a communication network and is a device capable of executing an application based on a cloud computing system, and is not limited to a mobile communication terminal, and all information and communication devices, multimedia terminals, and wired It may be various terminals, such as a terminal, a fixed terminal, and an IP (Internet Protocol) terminal. In addition, the terminal devices 120-1, ..., 120-N are, respectively, a mobile phone, a Portable Multimedia Played (PMP), a Mobile Internet Device (MID), a smart phone, a desktop, and a tablet computer. PC), a notebook (Notebook), a netbook (Net Book), a personal digital assistant (PDA), may be a mobile terminal having various mobile communication specifications such as a smart TV and information communication device.

The web application server 105 is a server that receives and processes requests from the terminal devices 120-1, ..., 120-N. Rather than processing all the requests received from the terminal devices 120-1, ..., 120-N in the web application server 105, the functions of the web application server 105 can be structurally separated and processed through web containers. Therefore, as the number of service requests from the terminal devices 120-1, ..., 120-N increases, a service method using the web application server 105 may be more effective. For example, BEA's WEB LOGIC, IBM's Web Spere, T-max's JEUS, Tomcat, RedHot's Jboss, etc. may correspond to the web application server 105 .

The application server 105 may transmit a web application execution screen to the cloud streaming server 110 based on the service request received from the terminal devices 120-1, ..., 120-N.

In addition, when a change in the entire screen is detected, the application server 105 may insert and transmit a transition identifier in the web application execution screen so that the cloud streaming server 110 can detect it.

The network 130 provides a path for transferring data between the cloud streaming server 110 and the terminal devices 120-1, ..., 120-N, and includes both an existing network and a network that can be developed in the future. It is an inclusive concept. For example, the network 130 is a wired/wireless local area network that provides communication of various information devices within a limited area, a mobile communication network that provides communication between mobile bodies and between the mobile body and the outside of the mobile body, and communication between the earth station and the earth station using satellites. It may be a satellite communication network providing Meanwhile, the transmission method standard of the network 130 is not limited to the existing transmission method standard, and may include all transmission method standards to be developed in the future. In addition, in FIG. 1 , the network used between the cloud streaming server 110 and the terminal devices 120-1, ..., 120-N is used between the terminal devices 120-1, ..., 120-N. It may be different from the network, or it may be the same.

FIG. 2 is a block diagram illustrating an example of the cloud streaming server shown in FIG. 1 .

Referring to FIG. 2 , the cloud streaming server shown in FIG. 1 includes a screen receiving unit 210 , a transition identifier detecting unit 220 , a change region detecting unit 225 , an animation message generating unit 230 , a capturing unit 250 , and encoding. It includes a unit 260 , a sending unit 270 , and a storage unit 280 .

The screen receiving unit 210 receives a web application execution screen from the web application server. Such a web application execution screen may include a main screen and a menu area superimposed on the main screen.

The transition identifier detection unit 220 detects a transition identifier included in the web application execution screen. In this case, the transition identifier may correspond to any one or more pixel coordinates and pixel values among pixels in a frame included in the web application execution screen. For example, the transition identifier may be one in which one or more pixel coordinates and pixel values of pixels located at edges and corners of a frame included in the web application execution screen are preset.

When the transition identifier is not detected, the change region detection unit 225 determines a change region of the current frame changed from the previous frame by comparing the current frame with the previous frame included in the web application execution screen. In this case, the change area may be a menu area overlappingly displayed on the main screen among the web application execution screens.

When a transition identifier is detected, the animation message generator 230 generates an animation message including animation information to be applied to the entire screen, and when no transition identifier is detected, an animation message including animation information applied to a change region create In this case, the animation message may include an animation type for determining the type of animation. For example, the animation message may include an animation type corresponding to any one of flying up, brightness change, rising, and wiping. In addition, the animation message may include animation information corresponding to at least one of an animation type, an animation application time, an animation repetition number, a start coordinate, an end coordinate, a start size, and an end size. Also, the animation message may include an animation application time.

At this time, the start coordinate is the animation start coordinate of the video object to which the animation is applied, the end coordinate is the animation end coordinate of the video object to which the animation is applied, the start size is the animation start size of the video object to which the animation is applied, and the end size is the animation end size of the video object to which the animation is applied.

For example, the animation type is 'effect type', the animation application time is 'duration', the number of animation repetitions is 'isRepeat', the start coordinate is 'start X, start Y', the end coordinate is 'end X, end Y', The start size may be expressed as 'start W, start H' and the end size may be expressed as 'end W, end H'.

When the transition identifier is detected, the capture unit 250 generates a captured image from the entire screen, and when the transition identifier is not detected, generates a captured image from any one of the frames in the change region. In this case, when generating a captured image from any one of the frames in the change region, the captured image may be an image corresponding to the first frame or the last frame among the frames in the change region.

The encoding unit 260 encodes the captured image as a still image by using a still image compression technique. In this case, the captured image may be encoded as a still image by using a still image compression technique corresponding to any one of portable network graphics (PNG), paletted portable network graphics (PNG), and joint photography experts group (JPEG).

The PNG still image compression technique has good image quality during encoding, but the transmission speed may be lowered when the bandwidth of the transmission network is low due to the large data size.

The paletted PNG still image compression technique reduces the data size of the image during encoding, so the transmission speed can be guaranteed, but since the color is expressed in 8 bits, it can cause deterioration in image quality.

Since the JPEG still image compression technique has good compression efficiency, the amount of transmitted data can be greatly reduced during encoding.

The sending unit 270 performs a still image-based cloud streaming service by transmitting a still image-encoded captured image and an animation message to the user terminal so that the user terminal can generate a web application execution screen. For example, the cloud streaming server 110 may completely generate and stream the application result screen, but the load generated in the cloud streaming server 110 by transmitting the application result screen to the user terminal in the same way as above. can be significantly reduced. As such, when the load of the cloud streaming server 110 is reduced, the number of services that can be simultaneously processed by the cloud streaming server 110 increases, so that more users can receive the service at the same time.

The storage unit 280 stores various information generated in the process of the cloud streaming service according to the embodiment of the present invention as described above.

According to an embodiment, the storage unit 280 may be configured independently of the cloud streaming server 110 to support a function for a cloud streaming service. In this case, the storage unit 280 may operate as a separate mass storage and may include a control function for performing an operation.

In addition, the cloud streaming server 110 configured as described above may be implemented as one or more servers.

On the other hand, the cloud streaming server 110 is equipped with a memory can store information in the device. For one implementation, the memory is a computer-readable medium. In one implementation, the memory may be a volatile memory unit, and in another implementation, the memory may be a non-volatile memory unit. In one embodiment, the storage device is a computer-readable medium. In various different implementations, the storage device may include, for example, a hard disk device, an optical disk device, or some other mass storage device.

3 is a diagram illustrating a process of performing a cloud streaming service based on a still image according to an embodiment of the present invention.

Referring to FIG. 3 , the process of performing a cloud streaming service based on a still image according to an embodiment of the present invention can be described by classifying it into a cloud streaming server area 300 , a terminal area 305 , and an application server area 310 . have.

First, in the cloud streaming server area 300 , based on a user's request, a web application execution screen generated by executing the web application server may be received 320 .

At this time, the cloud streaming server area 300 detects the transition identifier from the web application execution screen (325), and depending on whether the transition identifier is detected, creates a captured image for the entire screen or the change area, or generates an animation message (340) )can do.

In addition, in the cloud streaming server area 300 , the captured image and the animation message on which the encoding 330 is performed may be streamed 350 together to the terminal area 305 .

In the terminal area 305 , a web application execution screen may be generated using the captured image and the animation message received from the cloud streaming server area 300 . At this time, since the animation information includes information such as animation type, animation application time, animation repetition number, start coordinates, end coordinates, start size, and end size, it is possible to accurately and easily apply animation to the captured image and execute the web application. You can create a screen.

In the terminal area 305 , the web application execution screen generated as described above may be output to the user by performing image rendering 370 .

The application server area 310 receives the user's input signal, and transmits an output screen corresponding to the input signal to the cloud streaming server.

4A and 4B are diagrams illustrating a transition identifier according to an embodiment of the present invention.

4A and 4B , it can be seen that the transition identifier according to an embodiment of the present invention is one or more pixel coordinates and pixel values of pixels in the web application execution screen frame 400 . For example, the transition identifier may be a preset value for pixel coordinates and pixel values for the edge pixels 410 of the frame 400 as shown in FIG. 4A, or pixels located at the corners of the frame 400 as shown in FIG. 4B ( FIG. 4B ). The pixel coordinates and pixel values for 421 to 424) may be preset values.

5 is an operation flowchart illustrating an image cloud streaming service method in consideration of a change in an entire screen according to an embodiment of the present invention.

Referring to FIG. 5 , in the image cloud streaming service method in consideration of the entire screen change according to an embodiment of the present invention, a web application execution screen is received from a web application server (S510).

In addition, the image cloud streaming service method in consideration of the entire screen change according to an embodiment of the present invention detects a transition identifier included in the web application execution screen (S520).

In addition, the image cloud streaming service method in consideration of the change of the entire screen according to an embodiment of the present invention generates an animation message including animation information to be applied to the entire screen when a transition identifier is detected ( S530 ).

In addition, the image cloud streaming service method in consideration of the change of the entire screen according to an embodiment of the present invention generates a captured image from the entire screen (S540).

In addition, the image cloud streaming service method in consideration of the change of the entire screen according to an embodiment of the present invention encodes the captured image as a still image by using a still image compression technique ( S550 ).

In addition, the image cloud streaming service method in consideration of the change of the entire screen according to an embodiment of the present invention transmits an animation message and a still image encoded captured image to the user terminal so that the user terminal can generate a web application execution screen to the user terminal. Perform a base cloud streaming service (S560).

6 is an operation flowchart illustrating a cloud streaming service method according to whether a transition identifier is detected according to the present invention.

Referring to FIG. 6 , in the cloud streaming service method according to whether or not the transition identifier of the present invention is detected, the cloud streaming server detects the transition identifier (S610), and when the transition identifier is detected, it is determined that the entire screen is changed, and the full screen A transition animation message including animation information to be applied is generated (S620), and the entire screen is captured (S630) to generate a captured image.

In addition, the cloud streaming service method according to whether or not the transition identifier of the present invention is detected, when the transition identifier is not detected, determines that it is a partial screen change, detects a change area (S621), and includes animation information to be applied to the change area A change region animation message is generated (S622), and a change region is captured (S623) to generate a captured image.

The image cloud streaming service method in consideration of the entire screen change according to the present invention may be implemented in the form of a program command that can be executed through various computer means and recorded in a computer readable medium. The computer-readable medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the medium may be specially designed and configured for the present invention, or may be known and available to those skilled in the art of computer software. Examples of the computer-readable recording medium include magnetic media such as hard disks, floppy disks and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic such as floppy disks. - Includes magneto-optical media, and any form of hardware device specially configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions may include not only machine language codes such as those generated by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like. Such hardware devices may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

As described above, in the cloud streaming service system according to the present invention, the image cloud streaming service method in consideration of the change of the entire screen, and the apparatus therefor, the configuration and method of the embodiments described above are not limitedly applicable, but the above Embodiments may be configured by selectively combining all or part of each embodiment so that various modifications can be made.

According to the present invention, a captured image and an animation message are generated for an area in which video codec-based cloud streaming is not appropriate and transmitted to the user, so that the user terminal can generate a web application execution result screen to which the animation is applied. Furthermore, by reducing unnecessary animation processing in the cloud streaming server, it is possible to increase the number of web containers that can be run in the cloud streaming server, thereby helping the convenience of the service provider.

105, 310: web application server 110, 300: cloud streaming server
120-1 to 120-N: terminal device 130: network
210: screen receiving unit 220: transition identifier detection unit
225: change region detection unit 230: animation message generation unit
250: capture unit 260: encoding unit
270: sending unit 280: storage unit
305: user terminal 400: web application execution screen frame
410, 421 to 424: pixels corresponding to the transition identifier

Claims (5)

a screen receiving unit for receiving a web application execution screen from a web application server;
a transition identifier detection unit for detecting a transition identifier included in the web application execution screen;
an animation message generator for generating an animation message including animation information when the transition identifier is detected;
a capture unit that generates a captured image corresponding to the animation;
an encoding unit that encodes the captured image as a still image using a still image compression technique; and
A sending unit that transmits the animation message and the still image-encoded captured image to the user terminal so that the user terminal can generate the web application execution screen
including,
The transition identifier is
Cloud streaming server, characterized in that it corresponds to an identifier indicating that it is a web application execution screen including animation. ◈Claim 2 was abandoned when paying the registration fee.◈ The method according to claim 1,
The cloud streaming server
When the transition identifier is not detected, a change region detection unit determines a change region of the current frame changed from the previous frame by comparing a current frame with a previous frame included in the web application execution screen.
further comprising,
The animation message generator
When the transition identifier is not detected, an animation message including animation information applied to the change region is generated,
the capture unit
Cloud streaming server, characterized in that for generating a captured image from any one of the frames in the change region. ◈Claim 3 was abandoned when paying the registration fee.◈ The method according to claim 1,
The transition identifier is
Cloud streaming server, characterized in that it corresponds to any one or more pixel coordinates or pixel values of the pixels in the frame included in the web application execution screen. ◈Claim 4 was abandoned when paying the registration fee.◈ 4. The method according to claim 3,
The transition identifier is
Cloud streaming server, characterized in that it corresponds to any one or more pixel coordinates or pixel values of pixels located at the edges and corners of the frame included in the web application execution screen. Receiving a web application execution screen from the web application server;
detecting a transition identifier included in the web application execution screen;
generating an animation message including animation information when the transition identifier is detected;
generating a captured image corresponding to the animation;
encoding the captured image as a still image using a still image compression technique; and
Transmitting the animation message and the still image-encoded captured image to the user terminal so that the user terminal can generate the web application execution screen
including,
The transition identifier is
An image cloud streaming service method considering the change of the entire screen, characterized in that it corresponds to an identifier indicating that it is a web application execution screen including animation.

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