KR100885615B1 - System and method of full duplex internet protocol television sevice to provide added data of contents relation product on the air - Google Patents

Abstract

A bidirectional IPTV service system for providing additional service as to content derivative goods, and a method thereof are provided to supply content derivative goods to a user while the user is watching contents. Plural set-top box(100) connected to a display device such as a TV or a monitor displays various data information provided from an external sever, and carries out an operation by an operating member including a remote controller and a keypad. A network(200) is an IP based network, and an authentication sever(300) stores subscribers information at a database and checks whether or not a user is registered before the user uses a service. A content sever(400) includes a contents database which stores contents information and a sever which supplies contents. An additional information sever(500) includes an engine or a database for providing additional information as to contents derivative goods exposed by the contents which can be provided.

Description

SYSTEM AND METHOD OF FULL DUPLEX INTERNET PROTOCOL TELEVISION SEVICE TO PROVIDE ADDED DATA OF CONTENTS RELATION PRODUCT ON THE AIR}

The present invention relates to an Internet Protocol Television (IPTV), and more particularly, to an interactive IPTV service system and method for providing additional information of a content derivative product being viewed in order to provide various interactive services.

The standardization of digital broadcasting is rapidly progressing, and various technical jobs are being developed in the fields of transmission of digital signals through a broadcasting network, multiplexing of data, processing video and audio signals, and display of digital television. Digital broadcasting is capable of compressing information data compared to analog broadcasting, has a high transmission speed, and has excellent sound quality and image quality. In addition, unlike conventional analog broadcasting, digital broadcasting has an advantage of enabling efficient use of frequency by digital modulation. Accordingly, various information can be broadcasted through hundreds of channels, and the viewer can access various information through the television.

First of all, digital broadcasting enables the implementation of interactive television (interactive television) by data broadcasting. Interactive television allows viewers to interact with TV beyond just channel, volume, and videotape manipulation. Thus, payment, banking, shopping, booking, games or karaoke can be performed.

However, in the conventional IPTV system, when a user wants to know in detail about a person or a product (hereinafter, referred to as a 'content derivative product') that is exposed through content viewing, the user cannot interact with the TV. This is done by looking for it through the Internet or acquaintances (知人).

In other words, while watching content, users become curious about people appearing in the content, props worn by the people, and shooting locations. In this case, users may access other media (newspapers, magazines, the Internet) or social networks other than television media. You will receive additional information about the content derivative.

However, in some cases, when the user does not remember the content or the scene or does not know the name, it is difficult to find it through other media, but rather, it discourages the user's curiosity.

The present invention was derived to solve this problem, the user by providing a derivative of the content exposed through the broadcast while watching the content, that is, the user by providing additional information on the characters or props of the main character appeared in the content freely It is a technical task to provide a bidirectional service in consideration of the convenience.

In addition, it is a technical task to induce a user's desire to purchase through additional information on derivatives of contents to promote the use and purchase of a second service and to generate profits.

In accordance with an aspect of the present invention, there is provided an IPTV system, including: an additional information server configured to store and manage additional information about a content derivative product exposed through each content; The content server manages the information data for each of the contents, and includes additional information of content derivative products exposed through the contents in the metadata of the contents when providing the information data of the contents at the request of a user. ; And a set-top box that receives and reproduces metadata corresponding to the content from the content server together with information data of the corresponding content from the content server when the reproduction request for the content is input from the user.

According to an example of the present invention, the metadata may include notification information for indicating that there is additional information on the content derivative at the time when the content derivative is exposed in the respective content.

According to an example of the present invention, the set-top box visually displays notification information on the content derivatives by the metadata, and when the selection for the content derivatives is input thereafter, the set top box is included in the metadata. The additional information is extracted and displayed on the screen.

In addition, the content derivatives, the subject information derivatives related to the subject of each subunit of the content, person information derivatives related to the person who appeared in the content, sound information derivatives related to the song, background music, sound effects of the singer embedded in the content , Image information derivatives related to the shooting location or set, stage equipment, prop information derivatives related to costumes or worn accessories known to the performer, and other derivatives.

On the other hand, IPTV system according to the present invention for achieving the above technical problem, the content server for storing and managing information data for each content; An additional information server configured to manage and provide additional information on a content derivative product exposed through the content and synchronization data for synchronizing the additional information on the content derivative product to a clock of each content; And when the reproduction request for the content is input, receives and plays information data about the corresponding content from the content server, and receives additional information synchronized with the additional information server when the content derivative product is exposed in the reproduced content. And a set-top box for reproduction.

In this case, the synchronization data may include notification information for notifying that there is additional information on the content derivative product in each of the contents.

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In addition, the set-top box visually displays the notification information on the content derivatives based on the synchronization data, and if the selection of the content derivatives is input thereafter, receives the corresponding data from the additional information server and displays it on the screen. I can display it.

On the other hand, the IPTV service method according to the present invention for achieving the technical problem, (a) the information data for the content and the additional information about the content derivatives exposed through the content in advance to the content and additional information server, respectively Making; (b) receiving information data about the content from the content server when a reproduction request for the content is input; (c) receiving information data on the content and receiving additional information on derivatives of the content exposed by the content; (d) displaying the notification information for notifying that there is additional information on the content derivative product when the content derivative product is exposed in the content when displaying the information data about the content; And (e) if there is a selection of a content derivative product desired by the user from the displayed notification information, displaying additional information about the content derivative product in detail and generating an event.

Here, the event means to issue a discount and a free coupon for the additional information or to access a related site to induce a purchase for the additional information.
According to an example of the present invention, in the step (c), the notification information for notifying that the additional information exists together with the additional information on the content derivatives is provided in the metadata format of the content. I can receive it.

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According to another example of the present invention, in the step (c), requesting synchronization data for notifying the additional information server that the additional information exists; And receiving the synchronization data in response to the request.

In this case, in step (e), if a selection for a derivative product of a desired content is input from the displayed synchronous data, additional information about the corresponding content derivative product may be received and displayed on the screen from the additional information server. have.

According to the present invention described above, by providing the user with additional information about the content derivative products exposed through the content while watching the content, there is an effect that can provide a two-way service to the user.

In addition, the user can induce curiosity to facilitate the use and purchase of secondary content, thereby generating revenue.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the IPTV that provides additional information on the content derivatives during viewing according to an embodiment of the present invention.

The content derivatives described in this embodiment mean both intangible products and tangible products in the content exposed through the IPTV system. For example, music flowing out of a city hall corresponds to an intangible product, and accessories such as jewelry worn by actors, costumes, surrounding props, and clothing stores correspond to types of products.

Looking at the kind of such content derivatives, content derivatives may be classified into subject information derivatives, person information derivatives, sound information derivatives, video information derivatives, prop information derivatives, and other derivatives.

Topic information derivatives are sub-topics of the content and tangible or intangible commodities related to the subject, and personal information derivatives are tangible and intangibles related to people such as the name and profile of the person (or performer) who appeared in the content. Acoustic information derivatives are songs, background music, and sound effects of singers embedded in the content. In addition, the image information derivatives are tangible or intangible goods related to the place where the broadcast was recorded, the shooting set, the stage device, etc., and the accessory information derivatives are the clothes or accessories worn by the performer, the bag, the shoes, and the like. In addition, the other derivatives are other information necessary for broadcasting in addition to the derivatives mentioned above, and examples thereof include various products, electronic products, furniture, etc., which are compatible with the video information derivatives.

In this embodiment, it is intended to disclose a two-way service that provides the user with the information of the above-described content derivatives. In more detail, in the present embodiment, various interactive tellers are provided by providing additional information on the content derivative product that the user is currently watching (or listening to) with a simple input of the user, and causing the user to desire to purchase it. We want to implement Vision's service.

1 is a view showing a network configuration for an IPTV system according to an embodiment of the present invention, Figure 2 is a block diagram showing a set-top box applied to the IPTV system according to an embodiment of the present invention.

Referring first to Figure 1, the IPTV system according to an embodiment of the present invention is provided with a plurality of set-top box 100 on the user side, the plurality of set-top box 100 through the network 200, the external authentication server ( 300, the content server 400, and the additional information server 500. In addition, a web site 600 such as a related sales site or personal homepage may be constructed and connected to the set-top box 100.

The plurality of set-top boxes 100 are connected to display devices (not shown), such as TVs or monitors, which are provided in homes or offices, respectively, to visually display various data information provided from external servers 300, 400, and 500. In this case, an operation for this may be performed through an operation means including a remote controller, a keypad, and the like.

The network 200 may be an IP-based network, but the present invention is not limited to using an IP-based network, and is not limited to a specific form as long as the wired / wireless communication network enables the network.

The authentication server 300 stores and manages member-specific information (for example, personal information, ID, password, contact information, etc.) of the service in a database (not shown), and is registered with the user before using the service. It plays a role in authenticating recognition.

The content server 400 refers to a web page or a database for providing content that can be serviced.

A content DB (not shown) in which information data of content is stored may be provided in the content server 400. In some cases, a plurality of content supply sub-servers may be provided below the content server 400 to provide respective content. The information data of the content can be stored in the supply subserver. According to this configuration, the content server 400 collectively manages the list of content supply subordinate servers and the content stored therein.

The additional information server 500 is configured as an engine or a database for providing additional information on content derivative products exposed through serviceable content.

Therefore, the IPTV system configured as above provides differentiated services only to members who have undergone user authentication through the authentication server 300, and not only the information data of the content through the content server 400 and the additional information server 500. Provide the user with additional information about the content derivatives exposed through the content. In this case, since the content derivatives exposed through the content may change according to the time flow of the content, in consideration of this, additional information on the content derivatives should be provided in synchronization with the information data of the content.

In addition, the IPTV system according to an embodiment of the present invention enables a purchase activity for a content derivative product by accessing a website 600 such as a sales site or a personal homepage related to the content derivative product, and in addition to the content derivative product. It also provides various interactive services by encouraging people to participate in the event. Here, the information of the web site 600 may be provided as included in additional information about the content derivative.

Set-top box according to an embodiment of the present invention for this purpose is configured as shown in FIG.

As shown, the set-top box is composed of a network interface 110, an input signal receiving module 120, a data processing module 130, a control module 140, a storage module 150, an output module 160.

The network interface 110 is responsible for an interface for performing communication between external servers through a network (200 of FIG. 1), and the input signal receiving module 120 receives an input signal of a user from an operation means such as a remote controller illustrated in the drawing. Receive and process Accordingly, when the user input signal is input through the input signal receiving module 120, the set-top box requests data from an external server, and then the data received through the network interface 110 is received by the data processing module ( Coded or encoded at 130 to store and manage in the storage module 150. And, it is shown to the user through the output module 160.

In brief, the set-top box according to an embodiment of the present invention requests data from an external server, that is, the content server (400 of FIG. 1) and the additional information server (500 of FIG. 1) by a user request, and requests the data. Receives and plays back, and serves as a medium to visually display it.

Accordingly, the IPTV system of the present invention can be divided into two embodiments according to a method of transmitting additional information in providing additional information of a content derivative product exposed through the content as follows.

In one embodiment, after providing the information data of the content, the additional information of the content derivatives exposed through the content is transmitted in the form of metadata of the content, in another embodiment of the information data and the content derivatives of the content The additional information is provided separately, but synchronization data is generated and transmitted therebetween.

First, a case of an embodiment of the present invention will be described with reference to FIGS. 3A to 3C.

FIG. 3A is a diagram illustrating a connection relationship between servers in an IPTV system according to an embodiment of the present invention, FIG. 3B is a diagram illustrating a structure of data applied to FIG. 3A, and FIG. 3C is a detailed diagram of metadata of FIG. 3B. It is a figure for explaining.

Referring to FIG. 3A, in an embodiment of the present invention, the content server 400 and the additional information server 500 are linked to synchronize additional information of the content derivative product exposed through the content to the information data of the content (①). .

Here, the synchronization method may be synchronized by adding the additional information at the time when the content derivative product is exposed in the content or by adding the additional information about the content derivative product at the end of the information data about the content. Details thereof will be described with reference to FIG. 3B below.

Subsequently, when a request for data is input from the set-top box 100 to the content server 400, in response, the content server 400 sends additional information about the content derivative product to the set-top box 100 together with the information data of the content. Transmit (②, ③). Then, the set-top box 100 plays the content received from the content server 400 and views the content, and participates in the event by reading additional information on the content derivatives exposed through the content while watching (④).

An event refers to an activity of accessing a related site to purchase a content derivative product or issuing a discount coupon, a free coupon, or event event information of the content derivative product.

Referring to FIG. 3B, in one embodiment of the present invention, information data (* .ts) 410 of content for one content and metadata 420 including additional information about a content derivative product as additional information thereof It can be configured as.

The metadata 420 may further include notification information indicating that there is additional information about a content derivative product exposed through the content.

Therefore, when the metadata 420 is provided together with the content information data 410 for one content, the notification information on the content derivative product is displayed at the time indicated by the metadata 420 while playing the content. In this way, the additional information about the content derivative product can be viewed.

This metadata 420 includes a name 422 for the content derivative, detailed information 424 and associated link site information 426, as shown in FIG. 3C.

The name 422 for the content derivative product refers to the name of the product, and the related link site information 426 refers to related site information to be accessed to perform the purchase and detailed information of the product. The related link site information 426 may be displayed for informational purposes, but may also be directly accessible if the site is serviceable in the IPTV system.

Further, the details 424 of the content derivatives include, for example, the age, photo, profile information, etc. of the person in the case of the person who appeared in the content. It may include information about the purpose, price, instructions for use.

Accordingly, in one embodiment of the present invention, since the additional information about the content derivative product is provided in the form of metadata for one content, the set-top box 100 is the content server 400 regardless of the additional information server 500. It may be performed in conjunction with. As a result, additional information on the content derivatives may be provided without additional synchronization, and a range of errors in data transmission may be reduced.

Next, the case of another embodiment of the present invention will be described.

4A is a diagram illustrating a connection relationship between servers in an IPTV system according to another exemplary embodiment of the present invention, and FIG. 4B is a diagram illustrating a data structure applied to FIG. 4A.

Referring to FIG. 4A, in another embodiment of the present invention, the set-top box 100, the content server 400, and the additional information server 500 interwork with each other.

The content server 400 stores and manages information data for each content.

The additional information server 500 synchronizes the additional information on the content derivative product exposed through each content to the corresponding content. The additional information server 500 may include, in addition to the additional information about the content derivatives, synchronization data in which the additional information about the content derivatives is synchronized with a clock of each content.

When the set-top box 100 receives a play request for the content from the user, the set-top box 100 receives the request for the information data on the content from the content server 400 and receives the information data (①, ③), and additional information of the content derivative product for the received content. Requests to the additional information server 500 and receives it (②). At this time, the set-top box 100 receives and displays the synchronization data from the additional information server 500 first (④, ⑤), and by requesting additional information synchronized with content by the user's hotkey operation, the additional information server 500 The additional information is received from and provided (⑥, ⑦).

The synchronization data includes notification information for indicating that additional information exists at the time when the content derivative product is exposed in each content.

For example, in order to reproduce one content in another embodiment of the present invention, as shown in FIG. 4B, the information data A of the content, the additional information C of the content derivative product, and the information of the content are shown. There is a need for synchronization data B for synchronizing the data A with the additional information C for the content derivative.

While the information data A of the content is reproduced for a total of T hours, the coffee mug RP1 on the table is exposed in the middle t1 hour, and the coffee shop RP2 is exposed in the background behind the two performers at t2 hour. Assume that Then, the coffee cup RP1 exposed for t1 hours and the coffee shop RP2 exposed for t2 hours may be content derivatives, and thus, each of these additional information RPAD1 and RPAD2 may exist.

In this case, the synchronization data B is activated during the time t1 and t2 in accordance with the information data A of the content, and if there is a user's request during the time when the synchronization data B is activated, each request time point t10, t20. Receive and provide additional information (RPAD1, RPAD2) for the coffee cup (RP1) and coffee shop (RP2) from the additional information server.

Accordingly, the IPTV system according to another embodiment of the present invention is different from the embodiment, and the data information (A) and the synchronization data of the content are the data necessary for the content reproduction from each of the content server 400 and the additional information server 500. (B) and additional information (C) for the content derivatives, respectively.

Hereinafter, an IPTV service providing method according to various embodiments will be described.

FIG. 5 is a flowchart illustrating an IPTV service method for providing additional information on derivatives of content during viewing according to an embodiment of the present invention, and FIGS. 6 and 7 are detailed views of FIG. 5.

First, information data about each content, and additional information about the content derivative products and the content derivative products exposed through the above contents are databased in each server (that is, the content server and the additional information server) and built in advance.

In addition, a set-top box capable of communicating through an IP network and a remote controller operating means for manipulating the operation of the set-top box are provided.

Thereafter, the user accesses the authentication server and performs user authentication through user login (S100).

Thereafter, when a reproduction request for the content is input from the remote control operation means, the set-top box requests information data about the corresponding content from the content server and receives it (S200).

At the same time, the notification information for notifying that there is additional information on the content derivative product exposed through the content is received (S300).

For example, as shown in FIG. 6, when receiving the information data of the content in the previous step, notification information for indicating that there is additional information on the content derivative product may be received in the form of metadata. (S310).

In this case, the metadata may be transmitted after transmitting the information data of the content, or may be inserted in the middle of the information data of the content and received simultaneously with the reception of the information data about the content.

Such metadata may include additional information about the content derivative.

In addition, referring to FIG. 7 as another embodiment, as a method of receiving notification information on a content derivative, requesting synchronization data for notifying the additional information server of additional information on a content derivative, In response to the request, corresponding synchronization data may be received from the additional information server (S320 and S322).

Then, the set-top box displays the information data of the content received from the content server, and at the same time, the notification information indicating that there is synchronous information received from the additional information server or the content server (i.e., additional information on the content derivative product exists). ) Is displayed (S400).

The screen displayed through the step S400 may be implemented as shown in FIG. 8.

Referring to FIG. 8, a screen in which one actor is holding a mobile phone is shown.

Here, the content derivatives exposed through the content may be not only an actor who appeared in the content, but also a white cotton tee and a cell phone worn by the actor.

Accordingly, in FIG. 8, notification information on the content derivatives is displayed by displaying hotkey information on each content derivative.

Thereafter, it is determined whether there is a selection input for the content derivative product through the hotkey operation (S500).

If there is no selection input for the content derivative, the synchronization information is displayed while the content being watched is continuously played.

On the contrary, if there is a selection input for the content derivative, additional information of the selected content derivative is requested (S600).

At this time, since the additional information is stored and managed separately from the information data of the content, the additional information is requested and received from the additional information server when necessary.

However, in some cases, it may be included in the metadata and transmitted together with the content information data. In this case, the additional information can be directly extracted through the metadata without the need for requesting data from the additional information server.

Thereafter, the received additional information is displayed on the screen, and in some cases, an event is generated (S700).

FIG. 9 is an example screen displayed by selecting a hotkey ① for a person in the content derivative product shown in FIG. 8, and briefly displays profile information about a person (singer struck) who appeared in the content.

The screen is an example of a screen of a user interface in consideration of ease of use, and is not limited thereto, and may be variously implemented without changing to essential features of the present invention.

Thereafter, when the event occurs, the user may participate in the event (S800).

In the present embodiment, the event refers to a service that generates a discount coupon or free coupon for additional information, or links a related site to induce a purchase for additional information.

Accordingly, after viewing the additional information, the user may participate in an event such as printing or downloading a discount coupon or a free coupon displayed on the additional information or accessing a related site.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that.

Therefore, since the embodiments described above are provided to completely inform the scope of the invention to those skilled in the art, it should be understood that they are exemplary in all respects and not limited. The invention is only defined by the scope of the claims.

1 is a diagram showing a network configuration for an IPTV system according to an embodiment of the present invention.

2 is a block diagram showing a set-top box applied to the IPTV system according to an embodiment of the present invention.

3A is a diagram illustrating a connection relationship between servers in an IPTV system according to an embodiment of the present invention.

FIG. 3B is a diagram showing the structure of data applied to FIG. 3A.

FIG. 3C is a diagram for describing the metadata of FIG. 3B in detail.

4A is a diagram illustrating a connection relationship between servers in an IPTV system according to another embodiment of the present invention.

4B is a diagram illustrating the structure of data applied to FIG. 4A.

FIG. 5 is a flowchart illustrating an IPTV service method for providing additional information on derivatives of content during viewing according to an embodiment of the present invention.

6 and 7 are detailed views of FIG. 5.

8 and 9 are diagrams illustrating step-by-step screens of an example of a user interface that provides additional information on derivatives of content during viewing.

<Description of the symbols for the main parts of the drawings>

100: set-top box 200: network

300: authentication server 400: content server

500: additional information server 600: web site

110: network interface 120: input signal receiving module

130: data processing module 140: control module

150: storage module 160: output module

410: content information data 420: metadata

422: Derivative Name 424: Derivative Details

426: Links to Derivatives Site Information

Claims (18)

An additional information server that stores and manages additional information on content derivative products exposed through each content; Managing information data for each content, and providing additional information of a content derivative product exposed through each content in the metadata of the content when providing the information data of each content at the request of a user; Content server; And If the user inputs a reproduction request for the content, and includes the set-top box for receiving and playing the metadata corresponding to the content with the information data of the content from the content server, The metadata may include notification information for indicating that additional information on the content derivative is present at the time when the content derivative is exposed in each of the contents. Bidirectional IPTV service system that provides additional information. delete The method of claim 1, The set top box, During the viewing, the notification information on the content derivatives is visually displayed by the metadata, and when the content derivatives are selected, additional information included in the metadata is extracted and displayed on the screen. An interactive IPTV service system that provides additional information about derivatives of content. The method of claim 1, The content derivative is Derivatives of thematic information related to the subject of the subunit of the content, Derivatives of the human information related to the person who appeared in the content, Derivatives of the singer's song, background music, and sound effects embedded in the content, Shooting place or shooting set, Stage An interactive IPTV service system that provides additional information about derivatives of content in viewing, including visual information derivatives related to the device, prop information derivatives related to costumes or worn accessories known to performers, and other derivatives. The method of claim 1, Web site for direct access to the content derivatives and to view information related to the content derivatives Interactive IPTV service system that provides additional information on the derivative of the content during viewing further comprising. A content server that stores and manages information data for each content; An additional information server configured to manage and provide additional information on a content derivative product exposed through the content and synchronization data for synchronizing the additional information on the content derivative product to a clock of each content; And When a request for playing the content is input from the user, the server receives and plays the information data about the content from the content server, and when the content derivative product is exposed in the played content, additional information synchronized with the content information from the additional information server Receive and play set-top boxes Interactive IPTV service system that provides additional information on the derivative of the content during viewing, including. delete The method of claim 6, The synchronization data is a two-way IPTV service system for providing additional information on the derivatives of the content during viewing, characterized in that the notification information for indicating that there is additional information on the content derivatives in each content. The method of claim 8, And visually displaying the notification information on the content derivatives by the synchronous data, and when the selection of the content derivatives is input thereafter, receiving the corresponding data from the additional information server and displaying the data on the screen. Interactive IPTV service system that provides additional information on derivatives of Chinese content. The method of claim 6, The content derivative is Derivatives of thematic information related to the subject of the subunit of the content, Derivatives of the human information related to the person who appeared in the content, Derivatives of the singer's song, background music, and sound effects embedded in the content, Shooting place or shooting set, Stage An interactive IPTV service system that provides additional information about derivatives of content in viewing, including visual information derivatives related to the device, prop information derivatives related to costumes or worn accessories known to performers, and other derivatives. The method of claim 6, Web site for direct access to the content derivatives and to view information related to the content derivatives Interactive IPTV service system that provides additional information on the derivative of the content during viewing further comprising. (a) pre-building information data on the content and additional information on the content derivative products exposed through the content in the content server and the additional information server, respectively; (b) receiving information data about the content from the content server when a reproduction request for the content is input; (c) receiving information data on the content and receiving additional information on derivatives of the content exposed by the content; (d) displaying the notification information for notifying that there is additional information on the content derivative product when the content derivative product is exposed in the content when displaying the information data about the content; And (e) if there is a selection of a content derivative product desired by the user from the displayed notification information, displaying additional information about the content derivative product in detail and generating an event; Interactive IPTV service method for providing additional information about the derivative of the content during viewing, including. The method of claim 12, In the step (c), In addition to the additional information on the content derivatives, in addition to the notification information for indicating that the additional information is included in the metadata provided in the metadata form of the content, the addition to the derivatives of the content during viewing Bidirectional IPTV service method for providing information. delete The method of claim 12, In the step (c), Requesting synchronization data to inform the additional information server that there is additional information on the content derivative product; And Receiving the synchronization data in response to the request Interactive IPTV service method for providing additional information about the derivative of the content during viewing, including. The method of claim 15, In the step (e), When the selection for the derivative of the content desired by the user is input from the displayed synchronous data, the additional information of the corresponding content derivative is received from the additional information server and displayed on the screen. Bidirectional IPTV service method providing additional information about. The method of claim 12, The event, And providing additional information on derivatives of the content during viewing, which is connected to a related site to issue discounts and free coupons for the additional information or to induce a purchase of the additional information. The method of claim 12, In step (b), A two-way IPTV service method for providing additional information on derivatives of content during viewing, characterized in that the step of firstly authenticating through user-specific login.

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