KR102373364B1 - Server and multi-media service device for detecting update of target site - Google Patents

Abstract

A server for tracking updates of a target site collects at least one selector from web documents of a plurality of target sites, and a distribution unit that generates and distributes selector information composed of the collected selectors to a multimedia service terminal, based on the selector information a document object model for a web document of the plurality of target sites based on a receiving unit receiving a detection record generated by detection of elements constituting the web document of the plurality of target sites from the multimedia service terminal and the detection record It includes a document object model management unit that stores (DOM, Document Object Model).

Description

Server and multimedia service terminal tracking updates of target site {SERVER AND MULTI-MEDIA SERVICE DEVICE FOR DETECTING UPDATE OF TARGET SITE}

The present invention relates to a server and a multimedia service terminal for tracking updates of a target site.

IPTV (Internet Protocol Television) is an interactive broadcasting and communication service that provides video contents such as movies and broadcast programs and various multimedia contents such as Internet searches to a TV set using a high-speed Internet network. Viewers can easily search the Internet by using the remote control, as well as watch movies, home shopping, home banking, online games, MP3, and other various contents and additional services provided by the Internet from IPTV.

In relation to such a web search service through IPTV, Korean Patent Registration No. 10-1107319, which is a prior art, discloses a method and system for providing an open API-based web portal service.

Recently, IPTV provides web search service through customizable UI/UX for browsing. However, the web search service has a disadvantage that it becomes difficult to provide a web search service through a customized UI/UX because the path and name become invalid all of a sudden when a large or small reorganization is performed on the web site.

An object of the present invention is to provide an update tracking server and a multimedia service terminal that enable easy web browsing in IPTV. An object of the present invention is to provide a method for facilitating web browsing in a multimedia service terminal in an environment where it is difficult to use a keyboard or mouse. An object of the present invention is to provide an update tracking server and a multimedia service terminal that provide a web service that blocks a specific area of a web document through a selector (predefiner). An object of the present invention is to provide an update tracking server and a multimedia service terminal that provide a blocked web service by actively tracking and managing the selector when the selector becomes invalid due to the reorganization of the web document. However, the technical problems to be achieved by the present embodiment are not limited to the technical problems described above, and other technical problems may exist.

As a means for achieving the above-described technical problem, an embodiment of the present invention collects at least one selector from web documents of a plurality of target sites, and generates selector information composed of the collected selectors to provide a multimedia service terminal. A distribution unit for distributing, a receiving unit for receiving, from the multimedia service terminal, a detection record generated by detection of elements constituting web documents of the plurality of target sites based on the selector information, and the plurality of detection records based on the detection record An update tracking server including a document object model manager for storing a document object model (DOM) for a web document of a target site may be provided.

Another embodiment of the present invention provides a distribution unit for distributing selector information including at least one selector collected from a plurality of target sites from an update tracking server, any one of the plurality of target sites according to a service request received from a user When a target site of It is possible to provide a multimedia service terminal including a transmission unit.

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.

According to any one of the above-described problem solving means of the present invention, it is possible to provide an update tracking server and a multimedia service terminal that enable easy web browsing in IPTV. A method for facilitating web browsing in a multimedia service terminal in an environment in which it is difficult to use a keyboard or a mouse may be provided. It is possible to provide an update tracking server and a multimedia service terminal that provide a web service that blocks a specific area of a web document through a selector (predefiner). When the selector becomes invalid due to the reorganization of the web document, it is possible to provide an update tracking server and a multimedia service terminal that actively track and manage the selector to provide a blocked web service.

1 is a block diagram of an update tracking system according to an embodiment of the present invention.
2 is a block diagram of an update tracking server according to an embodiment of the present invention.
3A and 3B are exemplary views for explaining a process of collecting a selector from a web document of a target site in the update tracking server according to an embodiment of the present invention.
4A and 4B are exemplary views for explaining a process of simplifying a rendered document object model according to an embodiment of the present invention.
5A and 5B are exemplary views for explaining a process of updating the pre-stored selector information by determining the similarity between the pre-stored document object model and the rendered document object model according to an embodiment of the present invention.
6A and 6B are exemplary views comparing a search result page for a general web document and a search result page displayed using a document object model for a web document according to an embodiment of the present invention.
7 is a flowchart of a method for tracking updates of a target site in an update tracking server according to an embodiment of the present invention.
8 is a block diagram of a multimedia service terminal according to an embodiment of the present invention.
9 is a flowchart of a method for tracking an update of a target site in a multimedia service terminal according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement them. However, the present invention may be embodied in several different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part is "connected" with another part, this includes not only the case of being "directly connected" but also the case of being "electrically connected" with another element interposed therebetween. . In addition, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated, and one or more other features However, it is to be understood that the existence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded in advance.

In this specification, a "part" includes a unit realized by hardware, a unit realized by software, and a unit realized using both. In addition, one unit may be implemented using two or more hardware, and two or more units may be implemented by one hardware.

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

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

1 is a block diagram of an update tracking system according to an embodiment of the present invention. Referring to FIG. 1 , the update tracking system 1 may include an update tracking server 110 , a multimedia service terminal 120 , and a display device 130 . The update tracking server 110 , the multimedia service terminal 120 , and the display device 130 illustrate components that can be controlled by the update tracking system 1 .

Each component of the update tracking system 1 of FIG. 1 is generally connected through a network. For example, as shown in FIG. 1 , the update tracking server 110 may be connected to the multimedia service terminal 120 at the same time or at a time interval.

A network refers to a connection structure in which information can be exchanged between each node, such as terminals and servers, and includes a local area network (LAN), a wide area network (WAN), and the Internet (WWW: World). Wide Web), wired and wireless data communication networks, telephone networks, wired and wireless television networks, and the like. Examples of wireless data communication networks include 3G, 4G, 5G, 3rd Generation Partnership Project (3GPP), Long Term Evolution (LTE), World Interoperability for Microwave Access (WIMAX), Wi-Fi, Bluetooth communication, infrared communication, ultrasound Communication, Visible Light Communication (VLC), LiFi, and the like are included, but are not limited thereto.

The update tracking server 110 may collect at least one selector from web documents of a plurality of target sites, generate selector information composed of the collected selectors, and distribute it to the multimedia service terminal 120 . Here, the target site refers to a web site, a web document, a web page, etc. to which a web browsing service, a web search service, etc. are to be provided through the multimedia service terminal 120 . The web document of the target site is displayed on the display device 130 through the multimedia service terminal 120 . In addition, in the web document of the target site, a focus movement operation and a browsing operation may be controlled through the remote controller 125 , a voice input, a gesture input, or the like.

The update tracking server 110 may receive a detection record generated by detection of elements constituting a web document of a plurality of target sites from the multimedia service terminal 120 based on the selector information. Here, the detection record may include URLs for the plurality of target sites and at least one selector detected from a region corresponding to an element related to selector information among a plurality of elements constituting a web document of the plurality of target sites.

The update tracking server 110 may store a document object model (DOM) for web documents of a plurality of target sites based on the detection record. For example, the update tracking server 110 may render document object models for web documents of a plurality of target sites in a virtual browser, and store the rendered document object models. In this case, the simplified document object model may be stored by replacing a text area in the rendered document object model with one or more replacement characters or by deleting a part corresponding to a preset command from the attribute area. In addition, the update tracking server 110 matches the rendered document object model with URLs for a plurality of target sites, and corresponds to a plurality of regions of the rendered document object model and at least one detected selector corresponding to the plurality of regions. can be saved.

When it is determined that at least one target site among a plurality of target sites corresponding to the service request input through the multimedia service terminal 120 is updated, the update tracking server 110 selects a selector changed according to the update from the updated target site. It can be extracted to update the selector information and the document object model. Here, the service request may be input through the multimedia service terminal 120 or the remote controller 125 interworking with the multimedia service terminal 120 .

For example, when the update tracking server 110 fails to detect an element from the web document of any one target site among a plurality of target sites by the multimedia service terminal 120 , the detection from the multimedia service terminal 120 is You may receive an error message about the failed target site. At this time, when an error message is received, a document object model for a web document of a target site corresponding to the error message is rendered in the virtual browser, and the degree of similarity between the rendered document object model and a plurality of pre-stored document object models is calculated. By determining, it is possible to detect an area determined to have a similarity greater than or equal to a preset similarity to a plurality of pre-stored document object models from the rendered document object model.

The update tracking server 110 may detect the selector again from the detected region, and update the previously stored selector information based on the detected selector again. At this time, the update tracking server 110 may detect the selector from the detected region again in the same structure as the selector information stored in relation to the target site corresponding to the error occurrence message.

When the selector information is updated, the update tracking server 110 may redistribute the updated selector information to the multimedia service terminal 120 .

The multimedia service terminal 120 may receive selector information including selectors collected from a plurality of target sites from the update tracking server 110 .

When the multimedia service terminal 120 accesses one of a plurality of target sites according to a service request input from the user, the multimedia service terminal 120 determines whether an element is detected from a web document of the accessed target site based on the selector information. A detection record can be created. For example, the multimedia service terminal 120 detects at least one selector from a region corresponding to an element related to selector information among a plurality of elements constituting a URL for the accessed target site and a web document of the accessed target site. A detection record may be generated, and the generated detection record may be transmitted to the update tracking server 110 .

When the detection of the element from the web document of the accessed target site fails, the multimedia service terminal 120 may transmit an error occurrence message for the target site in which the detection has failed to the update tracking server 110 . Here, the case where the element detection fails may mean a case where the selector corresponding to the selector information is not detected from the web site of the accessed target site.

When the selector information is updated based on the selector extracted from the target site for which the detection has failed, the multimedia service terminal 120 may receive the updated selector information from the update tracking server 110 again. In this case, when the updated selector information is distributed, the multimedia service terminal 120 may re-detect the element from the web document of the target site for which detection has failed based on the updated selector information.

The display device 130 may output image content corresponding to a service request input from the user, a search result page, a web document of a target site, and UI/UX necessary for inquiring a web document.

2 is a block diagram of an update tracking server according to an embodiment of the present invention. Referring to FIG. 2 , the update tracking server 110 may include a distribution unit 210 , a reception unit 220 , and a document object model management unit 230 .

The distribution unit 210 may collect selectors from web documents of a plurality of target sites. Also, the distribution unit 210 may generate selector information composed of the collected selectors. A process of collecting selectors from web documents of a plurality of target sites and generating selector information will be described in detail with reference to FIGS. 3A and 3B .

3A and 3B are exemplary views for explaining a process of collecting a selector from a web document of a target site in the update tracking server according to an embodiment of the present invention.

3A is an exemplary diagram illustrating a search result screen searched for in a portal site according to an embodiment of the present invention. Referring to FIG. 3A , the user may search for “memory management program” in the portal site through the multimedia service terminal 120 .

3B is an exemplary diagram illustrating a process of collecting selectors for a first search result among search results according to an embodiment of the present invention. 3A and 3B , selectors for the first search result 300 among the search results of the “memory management program” may be collected. The first search result 300 may correspond to elements constituting the web document, and the selector may be collected from the source code of the web document corresponding to the first search result 300 . The selector may include, for example, '#rso' (310), '.srg' (320), and '.mnr-c' (330). For example, the distribution unit 210 may generate selector information composed of the collected selectors. The selector information may include, for example, information about id/element/object.

In the case of FIG. 3B, 'class' is 'srg' among the children of an element whose 'id' is 'rso' through selector information composed of 'id=rso', 'class=srg', and 'class=mnr-c' Among the children of all elements, all objects whose 'class' name is 'mnr-c' can be found. Here, the selector information can be used as a kind of selection query in a similar JS library such as jQuery.

Returning again to FIG. 2 , the distribution unit 210 may generate selector information composed of selectors and distribute it to the multimedia service terminal 120 . In this case, the distribution unit 210 may distribute each selector by default in a contents script at the time of initial distribution. Also, when the selector information is updated, the distribution unit 210 may distribute the updated selector information to the multimedia service terminal 120 again. In this case, the distribution unit 210 may distribute a query corresponding to the selector information only when the selector information is updated.

The receiver 220 may receive, from the multimedia service terminal 120 , a detection record generated by detection of elements constituting a web document of a plurality of target sites based on the selector information. Here, the detection record may include URLs for a plurality of target sites and a selector detected from a region corresponding to an element related to selector information among a plurality of elements constituting a web document of the plurality of target sites. For example, if "memory management program" is searched for on portal site A, selectors corresponding to the corresponding search result on portal site A include a total of 10 selectors as selectors A to J, but selector A in the current user's site , selector D, and when regions responding to selector F are detected, detection records for a total of three selectors may be received from the multimedia service terminal 120 .

When the receiving unit 220 fails to detect an element from the web document of any one target site among the plurality of target sites by the multimedia service terminal 120 , the receiving unit 220 detects the failure from the multimedia service terminal 120 . You can receive an error message about the target site that has been set.

The document object model management unit 230 may store a document object model (DOM) for web documents of a plurality of target sites based on the detection record. Specifically, the document object model manager 230 may render document object models for web documents of a plurality of target sites in a virtual browser, and store the rendered document object models. Here, the virtual browser may mean that it is not visualized through the UI, but is loaded into a memory.

The document object model management unit 230 may store the simplified document object model by substituting one or more replacement characters for a text area in the rendered document object model or deleting a part corresponding to a preset command from the attribute area. For example, the document object model manager 230 may store the document object model by substituting a text area among the rendered document object models with specific alphabet characters. For another example, the document object model manager 230 may store the document object model by deleting id, class, href, and onclick corresponding to a preset command from among the attribute areas. A process of simplifying the document object model will be described in detail with reference to FIGS. 4A and 4B.

4A and 4B are exemplary views for explaining a process of simplifying a rendered document object model according to an embodiment of the present invention.

4A is an exemplary diagram illustrating a search result screen searched for on a portal site according to an embodiment of the present invention. Referring to FIG. 4A , the update tracking server 110 may search a portal site for a “memory management program” input from a user, and store a document object model for a web document of the search result.

4B is an exemplary diagram for explaining a process of simplifying a document object model according to an embodiment of the present invention. Referring to FIG. 4B , the update tracking server 110 may store the simplified document object model by substituting 'A' for the text area in the rendered document object model.

In this way, by storing the simplified document object model, it has the effect of compressing the web document, and even if the result of the search engine is updated, it is possible to track the block by detecting the similarity between the configuration types of the simplified document object model regardless of the content. has the advantage of being able to

In other words, the present invention may target a page whose contents change depending on the time, even if the URL is the same. Accordingly, since the location and size of the block to be tracked can be changed at any time, it is possible to track the block in the web document based on the similarity to the configuration of the document object model rather than simply the size of the configuration in the web document.

Returning to FIG. 2 again, the document object model management unit 230 associates the rendered document object model with the URL, and associates a plurality of regions of the rendered document object model with at least one detected selector corresponding to the plurality of regions. can be saved For example, the document object model management unit 230 may include {URL: url, {Selector: "#id .class .class", structure, "id class class", dom " DOM element}, {Selector: ...} , {Selector : ...} ...}, such as the rendered document object model, URL, and selector, can be stored in correspondence.

When the document object model management unit 230 receives an error message from the multimedia service terminal 120 , it renders a document object model for the web document of the target site corresponding to the error message in the virtual browser, and the rendered document object It is possible to determine the similarity between the model and a plurality of pre-stored document object models. Also, the document object model manager 230 may simplify the rendered document object model and a plurality of pre-stored document object models, and determine the similarity between the simplified document object models. In this case, the document object model management unit 230 may detect at least one region determined to be greater than or equal to a preset similarity. The process of determining the similarity will be described in detail with reference to FIGS. 5A and 5B .

5A and 5B are exemplary views for explaining a process of updating the pre-stored selector information by determining the similarity between the pre-stored document object model and the rendered document object model according to an embodiment of the present invention.

5A is an exemplary diagram illustrating a pre-stored document object model according to an embodiment of the present invention. Referring to FIG. 5A , the pre-stored document object model includes dom, structure, and selector, and may include pre-stored selector information 500 . The pre-stored selector information 500 may mean, for example, a structure including ["id", "class", and "class"].

5B is an exemplary diagram illustrating a rendered document object model according to an embodiment of the present invention. 5A and 5B , the document object model management unit 230 may determine the degree of similarity between the rendered document object model and the pre-stored document object model. For example, if the selector information 500 previously stored in the web document of the target site is not detected, the document object model management unit 230 renders the entire corresponding target site in a virtual browser, and pre-stored among the rendered document object models The candidate document object model 520 may be detected by searching an area having the highest similarity to the document object model 510 .

For example, the document object model manager 230 may detect a new selector with respect to the candidate document object model 520 configured as follows.

{URL: url,

{

selector: "#id .class .class",

structure: "id class class",

dom: DOM element},

{

selector2: ...},

{ selector3: ...} ...}

The document object model management unit 230 may detect the 'selector' of the candidate document object model 520 in the same form as the 'structure' 500 of the document object model previously stored for the candidate document object model 520 . there is.

Returning to FIG. 2 , the document object model manager 230 may detect the selector again from the detected area, and update the previously stored selector information based on the detected selector again.

The document object model manager 230 may detect the selector from the detected region again in the same structure as the selector information stored in advance in relation to the target site corresponding to the error occurrence message.

6A and 6B are exemplary views comparing a search result page for a general web document and a search result page displayed using a document object model for a web document according to an embodiment of the present invention.

6A is an exemplary diagram illustrating a search result page for a conventional general web document. Referring to FIG. 6A , when the multimedia service terminal 120 receives a search word "memory management program" 600 from the user, it displays a search result screen 610 corresponding to the search word through the display device 130 can do.

6B is an exemplary diagram illustrating a search result page displayed using a document object model for a web document according to an embodiment of the present invention. Referring to FIG. 6B , the multimedia service terminal 120 may display a search result corresponding to a “memory management program” 600 through the display device 130 as a document object modeled search result screen. In the document object modeled search result screen, a plurality of search result areas may be displayed through separate colors and may be displayed through a sequence number. In addition, even if the layout, structure, etc. of the corresponding site are changed, it has the advantage of being able to provide a document object modeled search page. Through this, even in an environment where it is difficult to use a keyboard or mouse, the user can easily move or browse the focusing area on the search result screen through remote control, voice input, or gesture input.

7 is a flowchart of a method for tracking updates of a target site in an update tracking server according to an embodiment of the present invention. The method for tracking updates of a target site performed by the update tracking server 110 shown in FIG. 7 includes steps processed in time series in the update tracking system 1 according to the embodiment shown in FIGS. 1 to 6B . include Accordingly, even if omitted below, it is also applied to the method of tracking the update of the target site performed by the update tracking system 1 according to the embodiment shown in FIGS. 1 to 6B .

In step S710, the update tracking server 110 may collect at least one selector from web documents of a plurality of target sites.

In step S720 , the update tracking server 110 may generate selector information composed of the collected selectors and distribute it to the multimedia service terminal 120 .

In step S730 , the update tracking server 110 may receive, from the multimedia service terminal 120 , a detection record generated by detection of elements constituting a web document of a plurality of target sites based on the selector information.

In step S740, the update tracking server 110 may store document object models for web documents of a plurality of target sites based on the detection records.

In the above description, steps S710 to S740 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 as needed, and the order between the steps may be switched.

8 is a block diagram of a multimedia service terminal according to an embodiment of the present invention. Referring to FIG. 8 , the multimedia service terminal 120 may include a distribution unit 810 , a detection unit 820 , and a transmission unit 830 .

The distribution unit 810 may receive selector information including at least one selector collected from a plurality of target sites from the update tracking server 110 . For example, at the time of initial distribution, the distribution unit 810 may receive a content script in which each selector is embedded from the update tracking server 110 .

When the selector information is updated based on the selector extracted from the target site for which detection has failed, the distribution unit 810 may receive the updated selector information from the update tracking server 110 again. For example, the distribution unit 810 may receive the query corresponding to the updated selector information again.

When one of a plurality of target sites is accessed according to a service request input from the user, the detection unit 820 detects and records the detection according to whether an element is detected from a web document of the accessed target site based on the selector information. can create Specifically, the detection unit 820 may generate a detection record by detecting a selector from an area corresponding to an element related to selector information among a plurality of elements constituting a URL for the accessed target site and a web document of the accessed target site. there is. For example, the detector 820 may detect a selector from a partial region corresponding to an element in a web document of the target site based on predefined selector information. For another example, when the visual layout, the structure and attribute information of elements, etc. are changed due to the reorganization of the structure of the target site, since the element region associated with the predefined selector information is not detected, the detection unit 820 detects the corresponding site Since the detection result is '0' even though it is a target, it is possible to derive the element detection failure. Here, the case where the element detection fails may include a case where the selector corresponding to the selector information is not detected from the web site of the accessed target site. In other words, a case in which the element detection fails may mean a case in which the selector constituting the target site is updated as the accessed target site is updated unexpectedly. Accordingly, the present invention can provide a system capable of detecting an option to dynamically respond to a target site update even if it is unexpectedly updated.

When the updated selector information is distributed, the detection unit 820 may re-detect an element from the web document of the target site for which detection has failed based on the updated selector information. The transmitter 830 may transmit the generated detection record to the update tracking server 110 . When the detection of the element from the web document of the accessed target site fails, the transmission unit 830 may transmit an error occurrence message for the target site in which the detection has failed to the update tracking server 110 .

9 is a flowchart of a method for tracking an update of a target site in a multimedia service terminal according to an embodiment of the present invention. The method of tracking the update of the target site performed by the multimedia service terminal 120 shown in FIG. 9 includes steps processed in time series in the update tracking system 1 according to the embodiment shown in FIGS. 1 to 8 . include Therefore, even if omitted below, it is also applied to the method of tracking the update of the target site performed by the multimedia service terminal 120 performed by the update tracking system 1 according to the embodiment shown in FIGS. 1 to 8 . do.

In step S910 , the multimedia service terminal 120 may distribute selector information including at least one selector collected from a plurality of target sites from the update tracking server 110 .

In step S920, when the multimedia service terminal 120 accesses any one of the plurality of target sites according to the service request input from the user, based on the selector information, whether an element is detected from the web document of the accessed target site Depending on whether or not a detection record can be created.

In step S930 , the multimedia service terminal 120 may transmit the generated detection record to the update tracking server 110 .

In the above description, steps S910 to S930 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 as needed, and the order between the steps may be switched.

The method for tracking updates of a target site in the update tracking server and the multimedia service terminal described through FIGS. 1 to 9 is in the form of a recording medium including a computer program stored in a medium executed by a computer or instructions executable by a computer can also be implemented. In addition, the method for tracking the update of the target site in the update tracking server and the multimedia service terminal described with reference to FIGS. 1 to 9 may be implemented in the form of a computer program stored in a medium executed 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. Also, computer-readable media may include computer storage 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.

The above description of the present invention is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into 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 dispersed form, and likewise 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 above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention. do.

110: update tracking server
120: multimedia service terminal
125: remote control
130: display device
210: distribution unit
220: receiver
230: document object model management unit
810: distribution unit
820: detection unit
830: transmission unit

Claims (19)

A server that tracks updates of a target site, the server comprising:
a distribution unit that collects at least one selector from web documents of a plurality of target sites, generates selector information composed of the collected selectors, and distributes it to a multimedia service terminal;
a receiving unit configured to receive, from the multimedia service terminal, a detection record generated by detection of elements constituting the web documents of the plurality of target sites based on the selector information; and
A document object model management unit that stores a document object model (DOM) for web documents of the plurality of target sites based on the detection record
Including, update tracking server.
The method of claim 1,
When it is determined that at least one target site among the plurality of target sites corresponding to the service request input through the multimedia service terminal is updated, the update tracking server extracts a selector changed according to the update from the updated target site, an update tracking server that updates the selector information and the document object model.
3. The method of claim 2,
The service request is input through the multimedia service terminal or a remote control interworking with the multimedia service terminal,
The image content or search result page corresponding to the service request is displayed through a display device connected to the multimedia service terminal, update tracking server.
The method of claim 1,
The document object model management unit renders document object models for the web documents of the plurality of target sites in a virtual browser, and stores the rendered document object models.
5. The method of claim 4,
The document object model management unit stores a simplified document object model by replacing a text area in the rendered document object model with one or more replacement characters or by deleting a part corresponding to a preset command from an attribute area, an update tracking server.
5. The method of claim 4,
The detection record includes URLs for the plurality of target sites and at least one selector detected from a region corresponding to an element related to the selector information among a plurality of elements constituting a web document of the plurality of target sites. tracking server.
7. The method of claim 6,
The document object model management unit corresponds to the rendered document object model and the URL, and stores a plurality of regions of the rendered document object model in correspondence with the at least one detected selector corresponding to the plurality of regions, Update tracking server.
The method of claim 1,
When the multimedia service terminal fails to detect the element from the web document of any one target site among the plurality of target sites, the receiving unit generates an error message from the multimedia service terminal about the failed target site to receive, the update tracking server.
9. The method of claim 8,
When receiving the error message, the document object model management unit renders a document object model for a web document of a target site corresponding to the error message in a virtual browser, and a plurality of pre-stored document object models from the rendered document object model. An update tracking server that detects at least one area determined to be more than a preset similarity with the document object model.
10. The method of claim 9,
The document object model manager determines the degree of similarity between the rendered document object model and the plurality of pre-stored document object models, an update tracking server.
10. The method of claim 9,
The document object model management unit detects a selector again from the detected area, and updates the previously stored selector information based on the detected selector again.
12. The method of claim 11,
and the document object model management unit re-detects the selector from the detected area in the same structure as the selector information previously stored in relation to the target site corresponding to the error occurrence message.
12. The method of claim 11,
When the selector information is updated, the distribution unit redistributes the updated selector information to the multimedia service terminal.
In the multimedia service terminal for tracking the update of the target site,
a distribution unit receiving, from the update tracking server, selector information including at least one selector collected from a plurality of target sites;
When one of the plurality of target sites is accessed according to a service request input from a user, a detection record is generated based on whether an element is detected from a web document of the accessed target site based on the selector information a detection unit; and
Transmitting unit for transmitting the generated detection record to the update tracking server
Including, a multimedia service terminal.
15. The method of claim 14,
The detection unit generates the detection record by detecting at least one selector from a region corresponding to an element related to the selector information among a plurality of elements constituting a URL for the accessed target site and a web document of the accessed target site. which is a multimedia service terminal.
15. The method of claim 14,
When the detection of the element from the web document of the accessed target site fails, the transmitter transmits an error occurrence message for the target site in which the detection has failed to the update tracking server.
17. The method of claim 16,
The case where the element detection fails includes a case where the selector corresponding to the selector information is not detected from the web site of the accessed target site.
17. The method of claim 16,
When the selector information is updated based on the selector extracted from the target site for which the detection has failed, the distribution unit receives the updated selector information from the update tracking server again.
19. The method of claim 18,
When the updated selector information is distributed, the detection unit re-detects an element from a web document of a target site in which the detection has failed based on the updated selector information.

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