KR102140497B1 - Cloud web server for providing cloud iptv service based on command method, system and set-top box - Google Patents

Abstract

A cloud web server that provides command-based cloud IP service is an application platform that provides home portals and applications that provide functions for IP services, a cloud controller that manages and controls the status of home portals and applications, It may include a cloud engine that generates a draw object of a command method of a home portal and an application and a cloud agent that transmits a draw object to a set-top box.

Description

Cloud web server, set-top box, and system that provide command-based Cloud IPTV services {CLOUD WEB SERVER FOR PROVIDING CLOUD IPTV SERVICE BASED COMMAND METHOD, SYSTEM AND SET-TOP BOX}

The present invention relates to a cloud web server, set-top box, and system that provides a cloud-based command-based service.

The IPTV service is a two-way broadcasting and communication service that provides various functions such as movie content and internet search using a high-speed Internet network. Such an IPTV service may be provided through a set top box provided by an IPTV operator.

Conventional IPTV operators have mainly provided broadcasting service, and accordingly, IPTV service can be provided through a low-end set-top box with a low-processing CPU.

However, in recent years, as IPTV providers provide various services such as web services and games, a set-top box of high specification is required to provide IPTV services.

Accordingly, the existing set-top box-oriented service control method (IPTV service) is shifting to a method (cloud IPTV service) that aims to load balance the set-top box by moving some services to the cloud server.

Cloud IPTV service provides PNG file-based Image Cloud Service (ICS) and Video Cloud Service (VCS), and ICS and VCS are structures that can provide files individually or simultaneously, and stream images or videos to a set-top box. Because it is a delivery method, the load on the network and server is low. Here, the ICS method has a disadvantage in that it transmits data through virtualization such as a home portal, and has a better frame rate than VCS, but supports a low frame rate.

Meanwhile, in order to provide an IPTV service, it is essential to develop an application for providing a home portal and an interactive service. Here, the home portal is an application composed of basic functions such as menu and screen switching for providing an IPTV service and various application functions, and interactive services are various application services provided through interaction with a user.

Since the application provided on the existing IPTV service is dualized into a web application and a Java-based application, an environment capable of unifying and providing an HTML-based web application (or a Java-based application) is required for efficient application provision. .

In Korean Patent Publication No. 2012-0011578, when a virtualization server receives a control command for IPTV content from a user's mobile terminal, it executes an application corresponding to the control command using a virtual machine, and the execution result screen of the executed application Disclosed is a configuration of encoding through a virtual graphic driver and transmitting to a set-top box.

It is intended to manage and control the status of home portals and applications, and to create and draw command objects of home portals and applications to set-top boxes. However, the technical problems to be achieved by the present embodiment are not limited to the technical problems as described above, and other technical problems may exist.

As a technical means for achieving the above technical problem, a cloud web server providing a command-based cloud IP service according to the first aspect of the present invention includes a home portal and an application that provides a function for the IP service. An application platform that provides a, a cloud controller that manages and controls the status of the home portal and application, a cloud engine that generates a draw object of the command method of the home portal and application, and transmits the draw object to a set-top box It may include a cloud agent.

In addition, a set-top box providing a command-based cloud IP service according to the second aspect of the present invention provides a cloud adapter and graphic framework for receiving a command-type draw object of a home portal and an application in conjunction with a cloud web server. And a cloud client that calls the graphic library and draws and outputs the draw object through the graphic framework.

In addition, the system for providing a command-based cloud IP service according to the third aspect of the present invention includes a cloud web server and a set-top box, wherein the cloud web server provides a home portal and an application that provides a function for the IP service. The application platform includes a cloud controller that manages and controls the status of the home portal and application, a cloud engine that generates a draw object of the command method of the home portal and application, and a cloud agent that transmits the draw object to the set-top box. And the set-top box interworking with the cloud web server to call the cloud adapter receiving the draw object, a graphic library providing a graphic framework, and the graphic library, and drawing and outputting the draw object through the graphic framework It may include a cloud client.

The above-described problem solving means are merely exemplary and should not be construed as limiting the present invention. In addition to the exemplary embodiments described above, there may be additional embodiments described in the drawings and detailed description of the invention.

According to any one of the above-described problem solving means of the present invention, even a low-spec set-top box can provide a fast IP UI service using a command-type draw object technology without a load of a cloud web server and a network.

In addition, since a graphic framework is driven from a set-top box, a Java-based draw object is drawn and output on the screen of a display device, so the transmission load of graphic elements in the set-top box is low and the use of resources such as the CPU of the set-top box can be minimized. have.

In addition, since the command type draw object technology is used, the response speed of the home portal menu can be improved, and the connection cost of the cloud web server per subscriber can be reduced with a high contact rate. In addition, since it is possible to provide a fast network transmission speed and reduce the network load, an optimal cloud IP can provide the service.

In addition, by using the command-based draw object technology, Cloud IPP can provide services without replacing the existing low-end set-top box, and the user interface (UI) of the home portal and application can be easily operated by the user. Can be provided in a manner.

In addition, by using server middleware technology (a technology for converting a web application to a JavaScript application), the structure of providing the application of IPT can be unified, and it can be converted into an application optimized for each terminal and provided as needed.

In addition, since the cloud web server manages the data of the web application and the resource information of the javascript application, it is possible to link between other application services and it can also help in service activation and sales increase.

1 is a block diagram of a cloud IPT service providing system according to an embodiment of the present invention.
2 is a block diagram of the cloud web server shown in FIG. 1 according to an embodiment of the present invention.
3 is a detailed configuration diagram of the server middleware shown in FIG. 2 according to an embodiment of the present invention.
4 is a block diagram of the set-top box shown in FIG. 1 according to an embodiment of the present invention.
5 is a flowchart illustrating a method of converting a web application to a Java application and providing a command-based cloud IP service according to an embodiment of the present invention.
6 is an operation flowchart illustrating a method of providing a draw object of a command method according to an embodiment of the present invention.
7 is a block diagram of the cloud web server shown in FIG. 1 according to another embodiment of the present invention.
8 is a block diagram of the set-top box shown in FIG. 1 according to another embodiment of the present invention.
9 is a diagram illustrating a draw object tree according to another embodiment of the present invention.
10 is a diagram for updating a draw object tree according to another embodiment of the present invention.
11 is a flowchart illustrating a method of updating a draw object tree of a set top box according to an embodiment of the present invention.
12 is a flowchart illustrating a method of updating a draw object tree of a set top box according to another embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains may easily practice. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. In addition, in order to clearly describe the present invention in the drawings, parts irrelevant to the description are omitted, and like reference numerals are assigned to similar parts throughout the specification.

Throughout the specification, when a part is "connected" to another part, this includes not only "directly connected" but also "electrically connected" with other elements in between. . Also, when a part “includes” a certain component, this means that other components may be further included instead of excluding other components, unless otherwise specified.

In the present specification, the term “unit” includes a unit realized by hardware, a unit realized by software, and a unit realized by using both. Further, one unit may be realized by using two or more hardware, and two or more units may be realized by one hardware.

Some of the operations or functions described in this specification as being performed by a terminal or device may be performed instead on a server connected to the corresponding terminal or device. Similarly, some of the operations or functions described as being performed by the server may be performed in a terminal or device connected to the corresponding server.

Hereinafter, specific contents for the first embodiment of the present invention will be described with reference to the accompanying drawings or processing flow charts.

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

Referring to FIG. 1, the cloud IPTV service providing system may include a cloud web server 100 and a set-top box 110. However, since the cloud IP service providing system of FIG. 1 is only an embodiment of the present invention, the present invention is not limitedly interpreted through FIG. 1, and may be configured differently from FIG. 1 according to various embodiments of the present invention. It might be.

For example, the cloud IPTV service providing system may further include a headend legacy system 120.

The cloud web server 100 may provide a home portal and an application (home portal and application screen UI interface) that provide functions for the IPTV service. For example, the cloud web server 100 manages home portals and applications that provide show windows for cloud, home menu, keyword search, content purchase list, content viewing list, announcements, VOD content list and detailed view screen, etc. And can be provided according to the user's request.

The cloud web server 100 may manage and control the status of home portals and applications. For example, the cloud web server 100 may monitor and repair home portals and applications by interworking with external servers, and recover and control home portals and applications by detecting failures.

The cloud web server 100 may generate a draw object of a command method of a home portal and an application, and transmit the draw object to the set-top box 110. Here, the draw object may be a graphic object capable of directly outputting a JavaScript home portal and application managed by the cloud web server 100 through a display device without a separate process in the set-top box 110.

The set-top box 110 may receive a draw object in conjunction with the cloud web server 100, draw a draw object through a graphic framework, and output it to the display device.

For example, when the set-top box 110 receives the status change signal of the home portal and the application from the remote controller, the cloud web server 100 may request the home portal and application screen UI interface corresponding to the status change signal. . In addition, the set-top box 110 may receive a draw object for the home portal and application screen UI interface requested from the cloud web server 100, and draw and output the draw object.

The headend legacy system 120 is a system that manages web applications, and when a web application transmission request is received from the cloud web server 100, the list and data of the web application and the web page of the web application are transferred to the cloud web server 100. Can provide.

In general, each component of the cloud IPTV service providing system of FIG. 1 is connected through a network 130. The network means a connection structure capable of exchanging information between nodes such as terminals and servers, and examples of such a network include 3rd Generation Partnership Project (3GPP), Long Term Evolution (LTE), and WIMAX ( World Interoperability for Microwave Access), Wi-Fi, 3G, 4G, 5G, and the like.

Hereinafter, the operation of each component of the cloud IP-2 service providing system of FIG. 1 will be described in more detail.

2 is a block diagram of the cloud web server 100 shown in FIG. 1 according to an embodiment of the present invention.

Referring to FIG. 2, the cloud web server 100 includes an application platform 200, a cloud controller 210, a cloud engine 220, a cloud agent 230, a server middleware 240, and a cloud library 250. can do. However, the cloud web server 100 illustrated in FIG. 2 is only one implementation example of the present invention, and various modifications are possible based on the components illustrated in FIG. 2.

The application platform 200 may provide home portals and applications that provide functions for IPTV services. Here, the home portal and the application may be a JavaScript home portal and a JavaScript application provided in Java.

The cloud controller 210 can manage and control the state of the JavaScript home portal and application. For example, the cloud controller 210 may check the driving status of the JavaScript home portal and application in real time.

The cloud engine 220 may generate a draw object of a JavaScript home portal and a command method of an application. Here, the draw object may include at least one of a URL (uniform resource locator) of a graphic (home portal and application UI interface image) to be inserted, text to be inserted, position information and ratio information of the graphic and text to be inserted.

The cloud engine 220 may generate a draw object using a Java-based node JS. Specifically, the cloud engine 220 may generate a draw object by calling the cloud library 250 based on the node JS. At this time, the cloud engine 220 may generate a draw object using the interface AP provided by the cloud library 250.

The cloud agent 230 may transmit the draw object generated by the cloud engine 220 to the set-top box 110.

The server middleware 240 may convert a web application into a javascript application to provide a home portal and application through a command method. The server middleware 240 may automatically convert a web application to a JavaScript application in real time and provide an optimized configuration diagram for managing the converted JavaScript application. Unlike the Java application described above, the web application may be an application produced based on HTML (Hypertext Markup Language).

3 is a detailed configuration diagram of the server middleware 240 shown in FIG. 2 according to an embodiment of the present invention.

Referring to FIG. 3, the server middleware 240 may include a data cache 300, a conversion module 310, an application manager 320, and a resource module 330.

The data cache 300 may receive a list of web applications and data of web applications through interworking with a headend legacy (H/E Legacy) system. In addition, the data cache 300 may receive a web page of a web application in a multicast manner from a headend legacy system.

In addition, the data cache 300 stores data input and output between each component inside the server middleware 240, and is input and output between components outside the server middleware 240 and the server middleware 240. Save the data. For example, the data cache 300 may store a list of web applications and data of web applications received from the headend legacy system. Examples of the data cache 300 include a hard disk drive, read only memory (ROM), random access memory (RAM), flash memory, and a memory card existing inside or outside the server middleware 240.

The conversion module 310 may automatically convert a web application received from the headend legacy system to a JavaScript application in real time. For example, the conversion module 310 may convert a web application to a Draow Object capable of graphically implementing a web application through a render tree based on browsing parsing technology, and may be directly displayed on the terminal. For example, a web application may be converted into a Draow Object through various methods such as ICS (Industrial Control Systems) and browser virtualization, and displayed on the screen through a set-top. Here, browser virtualization may be provided through the creation of a draw object in the cloud engine 220.

The application manager 320 manages the converted JavaScript application and resource information (for example, HTML pages, audio, video files, etc.) of the JavaScript application and distributes the converted JavaScript application to the application platform 200. Can. The application manager 320 may cache and manage frequently used resource information separately to increase processing speed.

The application manager 320 may cause the JavaScript application corresponding to the application UI request to be driven when the set-top box 110 boots or when an application UI request is received from the set-top box 110.

Further, the application manager 320 may transmit the resource information to the set-top box 110 when resource information of the JavaScript application required for driving the application UI is requested from the set-top box 110.

The application manager 320 may manage and analyze web pages of web applications received from the headend legacy system.

The resource module 330 may manage data (home portal and application related audio and video files) received from the application platform.

Referring back to FIG. 2, the cloud library 250 may provide an application programming interface (API) of a home portal and an application interface (UI).

On the other hand, those skilled in the art, the application platform 200, cloud controller 210, cloud engine 220, cloud agent 230, server middleware 240, cloud library 250, each of which is implemented separately, or one of them It will be fully understood that the above can be integrated and implemented.

4 is a block diagram of the set-top box 110 shown in FIG. 1 according to an embodiment of the present invention.

Referring to FIG. 4, the set-top box 110 may include a cloud adapter 400, a graphic library 410, a cloud client 420, an application manager 430, and a memory 440. However, the set-top box 110 illustrated in FIG. 4 is only one implementation example of the present invention, and various modifications are possible based on the components illustrated in FIG. 4.

The cloud adapter 400 may receive a draw method of a command method of a home portal and an application in conjunction with the cloud web server 100. Here, the home portal and the application are javascript home portals and javascript applications provided in Java, and the draw object may be generated using a Java-based node JS. In addition, the draw object may include at least one of a URL of a graphic to be inserted, text to be inserted, position information and ratio information of the graphic and text.

The graphic library 410 may be composed of an Open GL Library, and may provide a graphic framework. Here, the Open GL library is a type of 3D graphic library that can draw basic shapes such as points, lines, and polygons, and convert them into pixel formats. Also, the graphic library 410 may support various other graphic engine libraries.

The cloud client 420 may call the graphic library 410 to perform a graphic operation of a screen for a draw object using an open GL library (or other graphic engine library). Specifically, the cloud client 420 may draw a draw object through a graphic framework and output it to a display device.

For example, the cloud client 420 adjusts the ratio of the home portal and application UI image and text to be inserted using the location information and the ratio information among the information included in the draw object, and the corresponding home portal and the insertion location on the screen. The application UI image and text can be output.

The cloud client 420 may implement various graphic effects on a screen for a draw object in conjunction with a resource server. Here, the resource server may be a server that provides essential image components (eg, focus, color keys, arrows, etc.), effect images, etc. for drawing the home portal and application UI.

The application manager 430 may manage life cycle and session information of home portals and applications. For example, the application manager 430 monitors a series of flows until the home portal and the application are executed and terminated, and catches an error point in case of a malfunction to solve the problem.

The application manager 430 may receive application resource information (eg, HTML pages, audio and video files, etc.) from the cloud web server 100. Here, the resource information of the application may be information required to drive the corresponding application UI.

In addition, the application manager 430 may receive and manage data (files such as an application's audio and video) from the application server based on the draw object.

The memory 440 stores data input and output between each component in the set-top box 110, and stores data input and output between the set-top box 110 and external components of the set-top box 110. do. For example, the memory 440 may store resource information of an application received from the cloud web server 100. Also, the memory 440 may store data received from the application server. Examples of the memory 440 include a read only memory (ROM), a random access memory (RAM), a flash memory, and a memory card existing inside or outside the set-top box 110.

On the other hand, those skilled in the art, cloud adapter 400, graphics library 410, cloud client 420, the application manager 430 and the memory 440 are each implemented separately, or one or more of them can be implemented by being integrated You will fully understand that there is.

5 is a flowchart illustrating a method of converting a web application to a Java application and providing a command-based cloud IP service according to an embodiment of the present invention.

The cloud IP service providing method according to the embodiment shown in FIG. 5 is performed by the cloud web server 100, the set-top box 110, and the headend legacy system 120 according to the embodiment shown in FIGS. It includes steps that are processed in time series. Therefore, even if it is omitted below, the contents described with respect to the cloud web server 100, the set-top box 110, and the headend legacy system 120 of FIGS. 1 to 4 according to the embodiment illustrated in FIG. Cloud iPtive can also be applied to service provision methods.

Referring to FIG. 5, in step S501, the data cache 300 may receive a list of web applications and data of web applications from the headend legacy system 120.

In step S502, the data cache 300 may request the version information of the web application received in step S501 from the application manager 320.

In step S503, the data cache 300 may receive version information of the web application from the application manager 320.

In step S504, the data cache 300 may compare whether the version information of the web application received from the application manager 320 and the version information of the web application received from the headend legacy system 120 are the same.

In step S505, the data cache 300 may upload data of the web application whose version information is changed when the version information of the web application is changed as a result of comparison in step S504.

In step S506, the data cache 300 may transmit data of the web application whose version information has been changed to the conversion module 310.

In step S507, the conversion module 310 may convert the received web application into a javascript application.

In step S508, the conversion module 310 may deliver the converted JavaScript application to the application manager 320.

In step S509, the application manager 320 may distribute the converted JavaScript application to the application platform 200 and manage the converted JavaScript application.

In step S510, the application platform 200 may deliver the converted JavaScript application to the cloud engine 220.

In step S511, the cloud engine 220 may generate the draw object using the converted JavaScript application using a Java-based Node JS and a cloud library.

In step S512, the cloud engine 220 may deliver the generated draw object to the cloud agent 230.

In step S513, when the cloud engine 220 receives an application driving signal from the set-top box 110, the cloud engine 220 may transmit a draw object corresponding to the application to the set-top box 110.

In the above description, steps S501 to S513 may be further divided into additional steps or combined into fewer steps, according to an embodiment of the present invention. In addition, some steps may be omitted if necessary, and the order between the steps may be changed.

6 is an operation flowchart illustrating a method of providing a draw object of a command method according to an embodiment of the present invention.

The method for providing a draw object according to the embodiment shown in FIG. 6 is time-series in the cloud web server 100, the set-top box 110, and the headend legacy system 120 according to the embodiment shown in FIGS. It includes the steps to be processed. Therefore, even if omitted below, the contents described with respect to the cloud web server 100, the set-top box 110, and the headend legacy system 120 of FIGS. 1 to 5 according to the embodiment shown in FIG. It can also be applied to a method of providing a draw object.

Referring to FIG. 6, in step S601, the cloud web server 100 may receive a set top box boot notification from the set top box 110.

In step S602, the cloud web server 100 may transmit basic graphic drawing data for drawing images and objects of the home portal and application to the set-top box 110.

In step S603, the cloud web server 100 is a command method for an initial home portal and an application (which may be a JavaScript home portal and a JavaScript application provided in Java) provided when the set-top box 110 is booted. A first draw object may be generated.

In step S604, the cloud web server 100 may transmit the first draw object generated in step S603 to the set-top box 110.

In step S605, the set-top box 110 may draw the received first draw object through a graphic framework and output it to the display device.

In step S606, the cloud web server 100 may receive the status change signal of the home portal and the application from the set-top box 110.

In step S607

The cloud web server 100 may generate a second draw object of a command method based on a state change signal.

In step S608, the cloud web server 100 may transmit the second draw object generated in step S610 to the set-top box 110.

In step S609, the set-top box 110 may draw the received second draw object through a graphic framework and output it to the display device.

In the above description, steps S601 to S609 may be further divided into additional steps or combined into fewer steps, according to an embodiment of the present invention. In addition, some steps may be omitted if necessary, and the order between the steps may be changed.

Hereinafter, a second embodiment of the present invention will be described. According to the first embodiment, compared to the ICS or VCS method, there is an advantage of having a fast reaction speed, but in the case of a set-top box having a low CPU performance, the drawing object draws a drawing object and the processing time for outputting each screen of the home portal and application is long. There may be limitations.

In order to improve this, according to the second embodiment, a plurality of images included in each screen may be divided into nodes, managed in a tree structure, and only the information about the updated sub-tree among the entire draw object trees may be transmitted to the set-top box.

7 is a block diagram of the cloud web server shown in FIG. 1 according to another embodiment of the present invention. Referring to FIG. 7, the cloud web server 100 includes an application platform 200, a cloud controller 210, a cloud engine 220, a cloud agent 230, a server middleware 240 and a cloud library 250 can do. The cloud engine 220 may include a draw object tree management unit 700 and a draw object tree data transmission/reception unit 710.

The description of the application platform 200, the cloud controller 210, the cloud engine 220, the cloud agent 230, the server middleware 240, and the cloud library 250 shown in FIG. 7 is the same as in FIG. 2, and thus is omitted. I will do it.

The draw object tree management unit 700 may generate a draw object tree using each of a plurality of images included in each screen of the home portal and the application as a node, and generate a draw object for each node.

The draw object tree data transmitting and receiving unit 710 may update the draw object tree of the set top box 110 by transmitting a draw object for each node to the set top box 110.

Referring briefly to FIG. 9A, the draw object tree 900 may be a tree for the home portal and the screen 910 of the application. For example, the top node 920 of the draw object tree 900 may be a node for the Poster Image 930, and the bottom node 940 may be a node for the Advertisement Images 950. For example, a lower node may be a node for an image that is updated more frequently.

Here, a relatively large amount of graphic display processing time is required in an initial screen or the like that contains a lot of complex graphics. To solve this, the draw object tree management unit 700 may manage the draw object tree 900 as a plurality of first sub-trees as a static tree and a plurality of second sub-trees as a variable tree. When processing a complex screen (high complexity), a draw object for each node of the second sub-tree may be transmitted to the set-top box to update only the second sub-tree. This is based on the assumption that the frequently updated image is at the edge node of the draw object tree 900.

The draw object tree manager 700 may calculate the complexity of each screen, and when the complexity of each screen is equal to or greater than a preset value, determine a plurality of second sub trees as subtrees for the update.

The draw object tree data transmitting and receiving unit 710 may transmit a draw object for each node of the plurality of second sub trees to the set top box 110 as a sub tree for updating.

On the other hand, if the complexity of each screen is equal to or less than a preset value, the draw object tree manager 700 may determine the entire draw object tree as a tree for updating. In this case, the draw object tree data transmitting and receiving unit 710 may transmit a draw object for each node of the entire draw object tree to the set-top box 110.

Referring to FIG. 9B, the draw object tree 900 may include a plurality of first sub-trees as a static tree and a plurality of second sub-trees 970-1 to 970-3 as a variable tree. Can. Here, the second sub-trees 970-1 to 970-3 are nodes 960-1 to 960 including a plurality of edge nodes 950-1 to 950-5 positioned at the bottom of the draw object tree 900. It can be a tree with -3) as the top node.

The draw object tree manager 700 may initially determine the second sub trees 970-1 to 970-3 for updating as the number of edge nodes. Thereafter, the draw object tree manager 700 may determine the second sub trees 970-1 to 970-3 for updating in the order of high complexity.

The draw object tree manager 700 may draw objects for each second sub tree 970-1 to 970-3 based on the number of edge nodes included in each second sub tree 970-1 to 970-3. It is possible to determine the transmission order and the number of transmissions.

The draw object tree data transmitting and receiving unit 710 may transmit a draw object for each node of the plurality of second sub trees 970-1 to 970-3 to the set-top box 110 based on the transmission order and the number of transmission times. .

When the number of updates of the second sub-tree for update is greater than the number of edge nodes, the second sub-tree for update may be redefined with round robin. For example, the draw object tree manager 700 may update the second sub tree 970-2 corresponding to the second time after the second sub tree 970-3 corresponding to the third time is updated three times. After redefining as the second sub tree, and after the second sub tree 970-2 corresponding to # is updated twice, the second sub tree 970-1 corresponding to # 1 as the second sub tree for updating You can redefine it.

Data for each tree component and metadata description and actual image information may be respectively described in a draw object. Each draw object may have data representing each node, metadata for graphics, and pnode representing a parent tree node.

Below is an example that the existing Draw Object is modified to have additional Node number and Parent node information to construct a Draw Object Tree.

Next, the entire draw object tree is constructed, and the draw object tree is composed of two static trees (first sub-tree) and variable trees (second sub-tree). Variable Tree is Edge Node? It is designated as a subtree up to 1 depth. The tree T1 to be drawn in the set-top box 110 becomes a form that adds a variable tree T* added to the static tree T.

Here, V represents Adjunction symbols of two trees. If the complexity of the draw object tree is greater than the complexity that the terminal can handle, a policy of updating only the sub tree is taken. The cloud web server delivers the draw object to the set-top box 110 in a format that updates only the sub-tree based on the edge node .

The complexity of each screen may be determined based on the size of the image of each screen, the number of edge nodes, the weight for each node, and the characteristics of the image corresponding to each node.

For example, the complexity can be calculated as follows.

Here, the weight of vertex is the size of the image. If the image is not updated, the structure of the draw object tree is not changed, so Step Function U(v) is additionally defined.

k(v) represents the number of edge nodes connected to node v. i represents the depth of the draw object tree. So if the maximum distance from the root node of the draw object tree to the edge node is d, i = d? depth_from_root_node.

In the example of FIG. 9A, d = 3, and i = 3, 2, 1 are possible. Here, v is calculated by adding weights and complexity for all nodes. If the index changes from one node toward the root node, all of the lower nodes are forced to change, and accordingly, the structure constituting the UI changes a lot, so a weight is required.

Meanwhile, the set-top box 110 may have very different computational power depending on the CPU's computing power, L1/L2 Cache size, and the presence of an FPU for graphic computing. Therefore, in the cloud web server 100, when processing data of the set-top box 110 is generalized, when transmitting data, there is a possibility that a problem arises in the ability to update the draw object tree in the terminal, and thus the processing of the set-top box 110 It should have a structure of draw object tree optimized for ability.

To this end, the draw object tree management unit 700 may determine the number of commands for updating based on the performance of the set-top box. The draw object tree data transmitting and receiving unit 710 determines the draw object for each node. The number of commands is divided by number, and the divided draw objects may be transmitted at predetermined time intervals.

For example, the draw object tree manager 700 may receive an update response from the set-top box 110. The update response may include update processing time. The draw object tree manager 700 may determine the performance of the set-top box 110 based on the update response.

For example, when the performance of the set-top box 110 is high, the draw object tree management unit 700 adjusts the number of commands high and transmits many commands to the set-top box 110 at a time, and the performance of the set-top box 110 is improved. If it is low, the number of commands can be adjusted low to transmit the command multiple times.

8 is a block diagram of the set-top box shown in FIG. 1 according to another embodiment of the present invention. Referring to FIG. 8, a cloud adapter 400, a graphic library 410, a cloud client 420, an application manager 430, and a memory 440 may be included. The cloud adapter 400 may include a draw object tree data transmission/reception unit 800 and a draw object tree management unit 810.

The description of the cloud adapter 400, the graphic library 410, the cloud client 420, the application manager 430, and the memory 440 shown in FIG. 8 is the same as in FIG. 2, and thus will be omitted.

The draw object tree data transmitting and receiving unit 800 may receive a draw object for each node of the draw object tree, each of which includes a plurality of images included in each screen of a home portal and an application from the cloud web server 100. .

The draw object tree management unit 810 may generate a draw object tree and update the draw object tree based on the draw object for each node.

The draw object tree data transmitting and receiving unit 800 may receive draw objects for each node of a plurality of second sub trees for updating. The draw object tree management unit 810 may update the second sub tree among the draw object trees based on the draw objects for each node of the plurality of second sub trees.

The cloud client 420 may draw each object by drawing a draw object for each node upon initial loading of each screen. When the second sub-tree is updated, the cloud client 420 may change each screen by drawing only draw objects for each node of the updated second sub-tree.

Referring to FIG. 10, the set-top box 110 receives the draw object for the second sub-tree 1000 for update from the cloud web server 100 and receives the draw object tree 1010 stored in the set-top box 110. Can be updated.

Thereafter, the set-top box 110 receives the draw object for the second sub-tree 1020 for update from the cloud web server 100 and updates the second sub-tree 1040 of the updated draw object tree 1010. can do.

11 is a flowchart illustrating a method of updating a draw object tree of a set top box according to an embodiment of the present invention.

In step S1100, the draw object tree management unit 810 of the set-top box 110 may transmit an update check message to the draw object tree management unit 700 of the cloud web server 100.

In step S1110, the draw object tree management unit 700 may calculate the complexity of the draw object tree.

In step S1120, the draw object tree management unit 700 may transmit information about the sub-tree for update to the draw object tree data transmitting and receiving unit 710.

In step S1130, the draw object tree data transmitting and receiving unit 710 may transmit a draw object for each node of the sub tree to the draw object tree management unit 810 of the set-top box 110.

In step S1140, the draw object tree management unit 810 of the set-top box 110 may update the draw object tree.

12 is a flowchart illustrating a method of updating a draw object tree of a set top box according to another embodiment of the present invention.

In step S1200, the draw object tree management unit 700 of the web server 100 may transmit information about the draw object tree for updating to the draw object tree data transmitting and receiving unit 710.

In step S1210, the draw object tree data transmitting and receiving unit 710 may transmit a draw object for each node of the draw object tree to the draw object tree management unit 810 of the set-top box 110.

In step S1220, the draw object tree management unit 810 of the set-top box 110 may update the draw object tree.

In step S1230, the draw object tree management unit 810 update response of the set-top box 110 may be transmitted to the draw object tree management unit 700 of the web server 100.

In step S1240, the draw object tree manager 700 of the web server 100 may determine the number M of commands for the draw object tree based on the update response.

In step S1250, the draw object tree management unit 700 of the web server 100 may transmit information about the draw object tree including M nodes to the draw object tree data transmitting and receiving unit 710.

In step S1260, the draw object tree data transmitting and receiving unit 710 may transmit a draw object for each node of the draw object tree to the draw object tree management unit 810 of the set-top box 110.

In step S1270, the draw object tree management unit 810 of the set-top box 110 may update the draw object tree.

One embodiment of the present invention may also be implemented in the form of a recording medium including a program stored in a medium executed by a computer or instructions executable by a computer.

Computer readable media can be any available media that can be accessed by a computer, and includes both volatile and nonvolatile media, removable and non-removable media. In addition, computer readable media may include both computer storage media and communication media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Communication media typically include computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave, or other transport mechanism, and includes any information delivery media.

The above description of the present invention is for illustration only, and those skilled in the art to which the present invention pertains can understand that it can be easily modified to other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts should be interpreted to be included in the scope of the present invention. .

100: cloud web server
110: set-top box
120: headend legacy system

Claims (28)

In the cloud web server providing a command-based Cloud IPT service,
An application platform that provides home portals and applications that provide functions for IPTV services;
A cloud controller that manages and controls the status of the home portal and application;
A cloud engine generating a draw object of a command method of the home portal and the application; And
Cloud agent sending the draw object to the set-top box
Including,
The draw object includes at least one of a URL (uniform resource locator) of a graphic to be inserted, text to be inserted, location information and ratio information of the graphic and text,
Cloud web server, wherein the graphic work for the home portal and the application is performed by the set-top box based on the draw object.
According to claim 1,
Server middleware that converts web applications to JavaScript applications to provide home portals and applications through the command method
Cloud web server, which further comprises.
According to claim 2,
The server middleware,
A data cache for receiving a list of web applications and data of the web applications through interworking with a headend legacy (H/E Legacy) system;
A conversion module for converting the web application to a javascript application;
An application manager that manages the converted JavaScript application and distributes it to the application platform; And
Resource module for managing data received from the application platform
That includes, a cloud web server.
According to claim 1,
Cloud library that provides application programming interface (API) of the home portal and application (UI)
Cloud web server, which further comprises.
According to claim 1,
The home portal and the application provided by the application platform is a JavaScript home portal and a JavaScript application provided in Java, a cloud web server.
According to claim 1,
The cloud engine is to generate the draw object using a Java-based Node JS (Node.js), cloud web server.
The method of claim 4,
The cloud engine calls the cloud library to generate the draw object using the interface api, cloud web server.
delete The method of claim 3,
The application manager is to transmit the resource information of the JavaScript application to the set-top box, cloud web server.
According to claim 1,
The cloud engine may include a draw object tree management unit that generates a draw object tree using each of a plurality of images included in each screen of the home portal and the application as a node, and a draw object for each node; And
A draw object tree data transmitting and receiving unit for transmitting a draw object for each node to the set top box to update the draw object tree of the set top box
That includes, a cloud web server.
The method of claim 10,
The draw object tree includes a plurality of first subtrees as a static tree and a plurality of second subtrees as a variable tree,
The second sub-tree is a node including a plurality of edge nodes located at the bottom of the draw object tree as a top node.
The method of claim 11,
The draw object tree management unit calculates the complexity of each screen, and when the complexity of each screen is greater than or equal to a preset value, determines the plurality of second sub trees as subtrees for the update,
The draw object tree data transmitting and receiving unit transmits a draw object for each node of the plurality of second sub trees to the set-top box, a cloud web server.
The method of claim 12,
The draw object tree management unit determines a transmission order and a number of transmission times of a draw object for each second sub tree based on the number of edge nodes included in each second sub tree,
The draw object tree data transmitting and receiving unit transmits a draw object for each node of the plurality of second sub trees to the set-top box based on the transmission order and the number of transmission times.
The method of claim 12,
The complexity of each screen is determined based on the size of the image of each screen, the number of edge nodes, weights for each node, and characteristics of the image corresponding to each node.
The method of claim 10,
The draw object tree management unit determines the number of commands for the update based on the performance of the set-top box,
The draw object tree data transmitting and receiving unit divides the draw objects for each node by the determined number of commands, and transmits the divided draw objects at predetermined time intervals.
In a set-top box providing a command-based Cloud IPT service,
A cloud adapter that receives a command type draw object of a home portal and an application in conjunction with a cloud web server;
A graphics library providing a graphics framework; And
A cloud client that calls the graphic library and draws the draw object through the graphic framework to output each screen of the home portal and application
Including,
The draw object includes at least one of a URL (uniform resource locator) of a graphic to be inserted, text to be inserted, location information and ratio information of the graphic and text,
The cloud client performs a graphic operation on the home portal and application based on the draw object, a set-top box.
The method of claim 16,
Application manager to manage the life cycle and session information of the home portal and application
Further comprising, a set-top box.
The method of claim 16,
The graphic library is an Open GL Library, a set-top box.
The method of claim 17,
The application manager is to receive the resource information of the application from the cloud web server, a set-top box.
The method of claim 17,
The application manager receives data from an application server based on the draw object, a set-top box.
The method of claim 16,
The home portal and application is a JavaScript home portal and a JavaScript application provided in Java, a set-top box.
delete The method of claim 16,
The draw object is a set-top box that is created using a Java-based node JS (Node.js).
The method of claim 16,
The cloud adapter includes a draw object tree data transmitting and receiving unit for receiving draw objects for each node of the draw object tree, each of which includes a plurality of images included in each screen of the home portal and the application from the cloud web server; And
The draw object tree management unit generates the draw object tree and updates the draw object tree based on the draw object for each node.
That includes, a set-top box.
The method of claim 24,
The draw object tree includes a plurality of first subtrees as a static tree and a plurality of second subtrees as a variable tree,
The second sub-tree is a set-top box in which a node including a plurality of edge nodes positioned at the bottom of the draw object tree is a top node.
The method of claim 25,
The draw object tree data transmitting and receiving unit receives a draw object for each node of the plurality of second sub trees for the update,
The draw object tree management unit updates the second sub tree among the draw object trees based on a draw object for each node of the plurality of second sub trees.
The method of claim 26,
The cloud client outputs each screen by drawing a draw object for each node upon initial loading of each screen,
If the second sub-tree is updated, the set-top box is to change the respective screens by drawing only draw objects for each node of the updated second sub-tree.
In the command-based Cloud IPTV service providing system,
Cloud web server; And
Set top box
Including,
The cloud web server,
An application platform that provides home portals and applications that provide functions for IPTV services;
A cloud controller that manages and controls the status of the home portal and application;
A cloud engine generating a draw object of a command method of the home portal and the application; And
Cloud agent sending the draw object to the set-top box
Including,
The set-top box,
A cloud adapter that receives the draw object in conjunction with the cloud web server;
A graphics library providing a graphics framework; And
Cloud client that calls the graphic library and draws and outputs the draw object through the graphic framework
Including,
The draw object includes at least one of a URL (uniform resource locator) of a graphic to be inserted, text to be inserted, location information and ratio information of the graphic and text,
The cloud client is to perform a graphic operation for the home portal and the application based on the draw object, the system.

Images