KR100741212B1 - Apparatus and method for data broadcasting - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data broadcasting apparatus and method, in particular, in order to obtain object information about objects, by storing the object information selection object information storage unit of a specific object, and then displaying the stored object information on the screen. Even when an object is not displayed on the screen, the object information can be obtained. In order to set the area in which the object is displayed on the screen, the object display information including the start time of the object, the display holding period, the display start point coordinates, and the display end point coordinates is used to set the area of the predetermined object displayed on the screen. The amount of data can be reduced. In addition, by displaying a list of objects providing the object information in the data broadcast, it is not necessary to confirm whether the user is the object providing the object information.

Object Display Information, Object List Information, Object Information, Object Location

Description

Apparatus and method for data broadcasting

1 is a diagram illustrating an embodiment in which an object is displayed on a screen in a conventional data broadcast.

2 is a block diagram showing an embodiment of a data broadcasting apparatus of the present invention.

3 is a diagram illustrating an embodiment in which object list information and object display information are stored in the object information storage unit of FIG. 2;

4 illustrates an embodiment in which the position of an object moves over time.

5 is a flowchart showing a data broadcasting method of the present invention.

6 is a diagram illustrating an embodiment in which a list of objects is displayed on a screen due to occurrence of an object list display event;

7 illustrates an embodiment in which an identifier is displayed at a position of a selection object.

FIG. 8 is a diagram showing an embodiment in which a web address for obtaining individual detailed information is displayed on a screen; FIG.

FIG. 9 is a diagram showing an embodiment in which a window linked to a web address from which individual detail information can be obtained is displayed on a screen; FIG.

* Description of the symbols for the main parts of the drawings *

210: time information reading unit 215: object information storage unit

220: position calculation unit 225: selection object information storage unit

230: network unit 235: graphic generation unit

245: Image synthesizer 250: Control unit

According to the present invention, when a user watches a predetermined broadcast program, the user can easily check a position where the corresponding object of the object information provided through the data broadcast is displayed on the screen, and the object information of the object selected by the user can be stored and the user simply The present invention relates to a data broadcast apparatus and a method for acquiring the data.

In general, data broadcasting includes objects such as characters and props displayed on the screen of a program when broadcasting a predetermined program through a predetermined transmission medium, for example, over-the-air broadcasting, satellite, cable, and the Internet, and the corresponding object. It obtains detailed information about the and broadcasts various individual information including the web address for internet shopping with the program. Therefore, a user can acquire object information on various objects displayed on the screen while receiving and watching the program by a broadcast receiving apparatus capable of receiving data broadcasting such as a television receiver and a computer.

As the advertising industry, which has a great impact on consumers, develops day by day, advertising using mass media is especially important. Therefore, users can check the information related to the objects displayed on the screen through data broadcasting by using a predetermined terminal, and acquire detailed information about specific objects by carrying out internet communication with a network access card in the terminal. Doing.

However, in the conventional data broadcasting, in order to acquire object information about objects displayed on the screen, the object information can be obtained only at the time when the object is displayed on the screen, and when the object is not displayed on the screen, Could not obtain object information for the object. For example, when the sneaker is displayed on the screen as shown in FIG. 1, the individual information on the sneaker can be obtained by placing the cursor on the sneaker, but after the sneaker disappears from the screen, the same sneaker is displayed again. Individual information about the sneakers could not be obtained until indicated by. As a result, when the object is displayed on the screen for a short time, the user has a great inconvenience in acquiring the object information of the object displayed on the screen.

In addition, in the conventional data broadcasting, when a user selects a specific object from among a plurality of objects displayed on the screen, first, an area in which a predetermined object is displayed on the screen must be set. For example, assuming that sneakers are displayed on the screen as shown in FIG. 1 and provide individual information on the sneakers, the coordinates of the area where the sneakers are displayed, that is, A1, A2, A3, A4 You need to set the coordinates. In addition, when the display position of the sneakers moved, the coordinates of the area where the sneakers were displayed had to be changed and set in accordance with the movement of the display position. Therefore, there is a problem that the amount of data for setting the area of the predetermined object displayed on the screen in a predetermined program is very large.

Also, among the plurality of objects displayed on the screen of a predetermined program, the object providing the object information through data broadcasting cannot be easily identified, and the user provides the object information only when the user places the object information at the display position of the object. Could be confirmed. For example, if it is assumed that data broadcasting does not provide the object information of the sneaker among the objects displayed on the screen as shown in FIG. 1, whether the user provides the object information of the sneaker by placing the cursor at the position of the sneaker. Was able to determine whether. This caused a lot of trouble for the user.

Therefore, an object of the present invention is to store the object information of a specific object in order to obtain the object information for the objects displayed on the screen, and then display the stored object information on the screen, so that the object is not displayed on the screen The present invention also provides a data broadcasting apparatus and method for acquiring individual information.

Another object of the present invention is to provide a predetermined object displayed on the screen by using the object display information consisting of the display start time, the display holding period, the display start point coordinates, the display end point coordinates to set the area in which the object is displayed on the screen. The present invention provides a data broadcasting apparatus and a method for reducing the amount of data for setting an area of a.

Another object of the present invention is to provide a data broadcasting apparatus and method by which a user does not need to individually check whether or not an object providing object information by displaying a list of objects providing object information in data broadcasting. There is.

The data broadcasting apparatus of the present invention having the above object includes a time information reading unit for reading the progress time information on the program currently being viewed, an object information storage unit storing the object list information and the object display information, and the time. A position calculating unit for calculating a position of a specific object displayed on the screen with time information read by the information reading unit and object display information stored in the object information storage unit, and for displaying the object list information stored on the object information storage unit on the screen; A graphic generator for generating a video signal and generating a video signal for displaying an identifier at a position of an object calculated by the position calculator, a video synthesizer for synthesizing the video signal and the program video data generated by the graphic generator; The object list information of the object appearing on the screen as the time information read by the time information reading unit is object information. Controlled so that the output from the book, and from a plurality of objects on the screen characterized in that comprises a control unit for controlling so that when a specific object is selected, it is the object information of the selected object to be displayed on the screen.

The data broadcasting apparatus of the present invention may further include a selection object information storage unit for storing the object list information of the selected object under the control of the controller.

The data broadcasting apparatus of the present invention may further include a network unit for accessing a web address capable of acquiring detailed information of the selected entity under the control of the controller.

On the other hand, according to the data broadcasting method of the present invention, the time information reading unit reads the progress time information on the currently viewed program, the object information storage unit stores the object list information and the object display information, and whether the object list display event has occurred. When the object list display event occurs as a result of the determination, an object list of a plurality of objects displayed on the screen is displayed on the screen, and it is determined whether a specific object is selected from the plurality of objects displayed on the screen. As a result of the determination of whether the specific object is selected, when a specific object is selected, the position calculating unit calculates the position of the object using the time information read by the time information reading unit and the object display information of the selected object, and calculates the position of the calculated object. It is characterized by consisting of displaying an identifier.

In addition, the data broadcasting method of the present invention determines whether a selection object information storage event has occurred after displaying an identifier at the position of the calculated object, and if the selection object information storage event occurs as a result of the determination, selects The entity information storage unit may further include storing entity list information of the selected entity.

If the selected object information storage event does not occur, the data broadcasting method of the present invention determines whether the object detail information display event has occurred, and if the object detail information display event occurs as a result of the determination, detailed information of the selected object. It characterized in that it further comprises that the web address to obtain the display on the screen.

In addition, the data broadcasting method of the present invention further includes after the web address for acquiring detailed information of the object is displayed, the web address is linked through a network unit, so that the linked window is displayed on the screen. Characterized in that.

The object list is displayed on one side of four sides on the screen.

The plurality of objects displayed on the screen may be a plurality of objects displayed on the still image screen.

The display of the linked window may be displayed on a part or the whole of the screen.

The entity list information may include a name, a number of the entity, and a web address for acquiring the entity detail information.

The object display information is characterized by consisting of the display start time, the display holding time, the display start point coordinates, the display end point coordinates.

Hereinafter, a data broadcasting apparatus and method of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram showing an embodiment of a data broadcasting apparatus of the present invention. As illustrated, the data broadcasting apparatus of the present invention receives a broadcast signal input through an antenna or the like, and includes a tuner unit 200 for selecting one broadcast program in synchronization with a channel, and the tuner unit 200. Time for reading the current time information on the program currently being viewed from the demultiplexer 205 for separating the broadcast program signal selected by the video data and the object information data and the object information data separated by the demultiplexer 205. An information reading unit 210, an object information storage unit 215 for storing object list information and object display information in the object information data separated by the demultiplexer 205, and an object stored in the object information storage unit 215. A position calculator 220 for calculating a position of a specific object based on the display information and the time information read by the time information reader 210, and a plurality of objects displayed on the screen. A control unit 250 for controlling a selected object to be displayed on a screen by selecting a specific object, a selection object information storage unit 215 for storing object list information of the object selected by the control of the control unit 250, Image for displaying on the screen the object list information stored in the network unit 230 and the object information storage unit 215 to access the web address to obtain the detailed information of the selected object under the control of the controller 250 An image for generating a signal, generating a video signal for displaying the identifier on the position of the object calculated by the position calculation unit 220, and an image for displaying the object list information stored in the selection object information storage unit 225 on the screen A graphics generator 235 and a demultiplexer 205 which generate a signal and generate an image signal for displaying a window of a web address linked through the network unit 230 on a screen. An image processor 235 is configured to receive image data and display the same on a screen, and an image synthesizer 245 for synthesizing the image signals generated by the image processor and the graphic generator 235.

The tuner 200 receives a broadcast signal to synchronize a channel. A broadcast signal input through an antenna or the like has a plurality of channels, and each channel has different program data. Therefore, the tuner unit 200 selects one program by selecting a specific channel.

The demultiplexer 205 receives a broadcast signal in which the tuner unit 200 synchronizes a channel, and divides the image data into object information data. Due to the implementation of digital broadcasting, it is possible to input not only audio and video data but also individual program information and object information displayed on the screen. Therefore, the demultiplexer 205 determines the position of the image data and the object information data by using the header present in the broadcast signal and separates the position.

The time information reading unit 210 reads progress time information on a program currently being viewed from the object information data separated by the demultiplexer 205. That is, the time information reading unit 210 reads time information of how much time has elapsed in the image currently displayed on the screen, based on the time point when the program is started on one program. As a result, it is possible to know how much the image displayed on the screen at a particular moment has progressed on one program.

The object information storage unit 215 stores object list information and object display information in object information data separated by the demultiplexer 205. The object list information and the object display information may be information about an object to be displayed on the screen for a predetermined time, and may be information about an object to be displayed on the screen until one program ends. The entity list information is composed of a name, a number of the entity, and a web address from which the entity detail information can be obtained. The object display information is composed of the display start time, display holding time, display start point coordinate, and display end point coordinate of the object.

The name of the object is the name of a plurality of objects displayed on the screen.

The number of the object is the number of a plurality of objects displayed on the screen. Since the names of the plurality of objects displayed on the screen may be the same, the number of the object is used to identify the objects of the same name.

The web address from which the individual detail information can be obtained is for distinguishing locations of servers that provide various services on the Internet, such as a uniform resource locator (URL). When accessing the web address, it is possible to obtain detailed information about the object such as how to use the object, an enlarged picture of the object, and the like. The web address may also provide a service for selling the entity.

The display start time of the object is the time until the specific object is displayed on the screen based on the time input of the video signal for one program through the antenna.

The display holding time of the object is a time until the object disappears from the screen, that is, while the object is displayed on the screen based on the time when the object is displayed on the screen.

The display starting point coordinate of the object is a coordinate of a point located when the object is displayed on the screen. The coordinates are relative, and positions of objects displayed on the screen are different according to the ratio between the width and the length of the screen of the image display apparatus. That is, although one display starting point coordinate of the object is displayed, the position where the object is displayed on the screen may be different according to the image display apparatus. This allows you to know the exact position of the object on any screen. Since the object is not composed of one point, the display starting point coordinate is the coordinate of the center point of the object.

The display end point coordinate of the object is the coordinate of the point where the object is finally located on the screen during the display holding time of the object. The coordinates are also relative, and the position at which the object is displayed on the screen is different according to the ratio of the width and height of the screen of the image display apparatus.

3 is a diagram illustrating an embodiment in which object information is stored in the object information storage unit of FIG. 2. As shown in FIG. 2, the object information storage unit 215 of FIG. 2 stores the object list information and the object display information. For example, the name of the object stored in the object information storage unit 215 is a necklace, the object number is 1, and the web address from which the detailed information of the product can be obtained is http://www.lgshoping.com. The display start time is 0.1 seconds, the display holding time is 4 seconds, the display start point coordinates are (41,160), and the display end point coordinates are (30, 170). With the above configuration, the object information storage unit 215 stores object information about a plurality of objects to be displayed in one program.

In addition, since the path in which a particular object moves may be a plurality of directions instead of one direction, and the speed at which the object moves on the screen may also be different, there may be a plurality of object display information matching one object list information. . For example, when one specific object moves on the screen but the display start point coordinates and the display end point coordinates are the same, if there is one object display information matching one object list information, the position of the path to which the object moves can be displayed. There will be no. That is, the entity is marked as present only at one fixed position during the display holding time. Therefore, when a change of direction occurs largely when a specific object moves on the screen or when the moving speed changes significantly, a plurality of object display information matching one object list information is set. This makes it possible to accurately display the object's movement path.

The position calculating unit 220 calculates the position of a specific object displayed on the screen by the time information read by the time information reading unit 210 and the object display information stored in the object information storage unit 215. When a specific object is selected by the user interface means 255 among the plurality of objects displayed on the screen, the position calculator 220 controls the object display information from the object information storage unit 215 under the control of the controller 250. Receive input. The position calculator 220 calculates the position of a specific object by using the object display information including the display start time, the display holding time, the display start point coordinate, and the display end point coordinate of the received object.

On the other hand, Figure 4 is a view showing an embodiment in which the position of the object moves over time. As shown, the center point of a specific object moves from (a, b) coordinates to (c, d) coordinates and then from (c, d) coordinates to (e, f) coordinates. In order to derive the coordinates at which the object is located at a specific time, a case in which the object moves from the (a, b) coordinate to the (c, d) coordinate will be described as an example.

The display holding time for moving a specific object from the (a, b) coordinates to the (c, d) coordinates is k, and the time elapsed since the particular individual is displayed in (a, b) is called t. During the display hold time on the X coordinate, certain objects move from a to c. Therefore, the X coordinate of a specific object at t is expressed by Equation 1 below. The position calculating unit 220 of FIG. 2 receives the display holding time k, the display start point coordinate (a, b), and the display end point coordinate (c, d) from the object information storage unit 215, and t is the above. It is derived by the difference between the time information read out by the time information reader 210 and the display start time received from the object information storage 215.

And during the display holding time on the Y coordinate, the specific object moves from b to d. Therefore, the Y coordinate of a specific object at t is expressed by Equation 2 below.

Therefore, the coordinate of a specific object at t becomes (X, Y) values derived from Equations 1 and 2 above.

Even when the specific object moves from (c, d) to (e, f), if the method is obtained in the same manner as in Equation 1 and Equation 2, coordinates of the specific object on the screen may be determined according to time. .

The selected object information storage unit 225 receives and stores the object list information of the selected object under the control of the control unit 250 by the command of the user interface means 255. Among the objects displayed on the screen, when the specific object is to be confirmed after the program is finished, the object information storage unit 215 is controlled by the control of the control unit 250 by a command through the user interface means 255. Outputs object list information of the object. The selected object information storage unit 225 receives and stores the output object list information. The stored object list information may be displayed on the screen after the program ends. As a result, the object information can be obtained even after the object is displayed on the screen.

The network unit 230 connects to a web address from which the object detail information of a specific object can be obtained under the control of the control unit 250 by a command of the user interface means 255. That is, when the network unit 230 receives a web address for acquiring the detailed object information of a specific object, the network unit 230 is connected to the Internet to access the web address.

The graphic generator 235 receives the object list information from the object information storage unit 215 and generates a video signal for displaying on the screen, and receives the position of the object from the position calculator 220 to identify the object. Generates a video signal for displaying the video signal, generates a video signal for displaying the object list information stored in the selected object information storage unit 225 on the screen, and accesses the window of the web address connected through the network unit 230 ( Video signal is generated to display on the screen.

The graphic generator 235 receives the object list information on the plurality of objects currently displayed on the screen under the control of the controller 250 by a command through the user interface means 255. Then, a video signal for displaying the received object list information in the form of text on the screen is generated.

The graphic generator 235 receives a position of a specific object from the position calculator 220. The graphic generator 235 generates an image signal for displaying an identifier at a position of a specific object received. The identifier is in the form of an arrow, a circle, a rectangle, or a triangle. Because of the identifier, it is possible to identify and display at which position a specific object exists among the plurality of objects displayed on the screen. In addition, since the position calculator 220 always calculates a position where one specific object exists on the screen, an identifier is displayed according to a path along which the object moves.

In addition, the graphic generator 235 generates an image signal for displaying the object list information stored in the selected object information storage unit 225 in the form of text on the screen.

The graphic generator 235 generates an image signal for displaying the window of the web address accessed by the network unit 230 on the screen of the image display apparatus.

The image processor 235 receives the image data separated by the demultiplexer 205 and processes the image data to be displayed on the screen. That is, since the video communicates in a compressed form such as MPEG2 in consideration of bandwidth and reception rate, the compressed form must be restored to the original image signal. Therefore, the image processor 235 processes the input image data to be displayed on the screen. The image processor 235 may control the controller 250 to implement a still image, not a video, on the screen.

The image synthesizer 245 synthesizes the image signals generated by the graphic generator 235 and the image processor 235. As a result, the image synthesizing unit 245 allows two image signals to be displayed at an appropriate position on the screen.

The controller 250 controls the object list information of an object appearing on the screen to be output from the object information storage unit as time information read by the time information reader, and selects a selected object from a plurality of objects displayed on the screen. Controls the object information of to be displayed on the screen.

5 is a flowchart illustrating a data broadcasting method displayed on a screen of the present invention. As shown in step S500, the time information reading unit reads the progress time information on the program currently being viewed, and the object information storage unit stores the object list information and the object display information. The demultiplexer 205 separates a broadcast signal input through an antenna into image data and object information data. In the individual information data of the separated data, the time information reading unit 210 reads the progress time information on the program currently being viewed. The object information storage unit 215 receives the remaining object information data excluding the time information, and stores object list information and object display information.

In a next step S502, it is determined whether an object list display event has occurred. That is, the control of the controller 250 by the command through the user interface means 255 determines whether an object list display event for displaying a list of objects displayed on the screen has occurred.

When the object list display event occurs as a result of the determination in step S502, a list of objects displayed on the screen is displayed in the next step S504. When the object list display event occurs, the object information storage unit 215 outputs object list information matching the same display start time as the time information read by the time information reading unit 210 at the moment of occurrence of the event. At this time, the object information storage unit 215 outputs only the name and number of the object from the web address from which the object name, number, and object detail information constituting the object list information are controlled by the control unit 250. The graphic generator 235 generates an image signal for displaying the output object list information in a text form on the screen. The image signal is synthesized with the image data by the image synthesizing unit 245 and displayed at an appropriate position on the screen. That is, since the image synthesizing unit 245 can adjust the position of the image on the screen, the object list information is displayed on one side of the four sides of the screen so as to minimize the viewing disturbance of the image displayed on the screen. . While the object list information is displayed on the screen, the controller 250 controls the image processor 235 to display a video on the screen or to prevent the video signal from being output at a specific moment so that the still image is displayed on the screen. When the still image is displayed on the screen under the control of the controller 250, the object may be observed in more detail than when the video is displayed on the screen.

6 is a diagram illustrating an embodiment in which a list of objects is displayed on a screen due to occurrence of an object list display event. As shown, a necklace, a car, a bag, and sneakers are displayed on the screen. Therefore, the name and number of the object, which is a list of each object displayed on the screen, are displayed on the screen. In displaying the list of the objects on the screen, the left side of the screen is displayed in the form of text. As a result, it is possible to prevent the inconvenience of having to check whether or not the user is an object providing object information.

In a next step S506, it is determined whether or not a specific entity is selected. The control of the control unit 250 by the command through the user interface means 255 determines whether a specific object is selected from among the plurality of objects displayed on the screen. In this case, a specific object is selected to select from a list of objects displayed on one side of the screen. A specific object is selected by using a number button or an arrow button by using a remote controller of an existing video display device.

As a result of the determination in step S506, when a specific object is selected, in step S508, the position calculating unit calculates the position of the object selected by the time information and the object display information read by the time information reading unit. The process of calculating the position of the object by the position calculator 220 is as described in Equations 1 and 2 above.

The identifier is displayed at the position of the object calculated in the next step (S510). The position of the specific object calculated by the position calculator 220 is input to the graphic generator 235. The graphic generator 235 generates an image signal for displaying an identifier at the input position of the specific object. The identifier is an arrow, a circle or the like. Since the identifier also moves along the path that the specific object moves, it is easy to identify the specific object among the plurality of objects displayed on the screen.

FIG. 7 is a diagram illustrating an embodiment in which an identifier is displayed at a position of an entity. As shown in the figure, when the sneaker is selected from the name and number of the object located on the left side of the screen, the sneakers appearing on the screen are displayed with a circular identifier. This means that regardless of the position of the sneaker on the screen, if the shoe is selected from the name and number of the object located on the left side of the screen, the identifier is displayed at the position where the sneaker exists on the current screen.

In the next step (S512), it is determined whether the selected object information storage event has occurred. The control of the controller 250 by a command through the user interface means 255 determines whether an event for storing the selected object information has occurred.

If the selected object information storage event occurs as a result of the determination in step S512, in step S514, the selected object information storage unit 225 stores the object list information of the selected object. By storing the object list information of the selected object in the selected object information storage unit 225, even if the object is not currently displayed on the screen, the object list information of the object can be displayed on the screen.

If the object information storage event does not occur as a result of the determination in step S512, it is determined whether the object detail information selection event has occurred in step S516. It is determined whether the object detail selection event has occurred by the command through the user interface means 255.

When the object detail information selection event occurs as a result of the determination in step S516, a web address for obtaining the object detail information is displayed on the screen in the next step S518. When the object detail information selection event of the object is generated by a command through the user interface means 255, the object list information of the selected object is output from the object information storage unit 215 under the control of the controller 250. At this time, the object information storage unit 215 outputs only a web address from which the object detail information can be obtained from the object list information under the control of the controller 250. The output web address is generated as an image signal for display in the form of text on the screen by the graphic generating unit 235, and is synthesized with the image data by the image synthesizing unit 245 and displayed on the screen.

8 is a diagram illustrating an embodiment in which a web address for obtaining individual detail information is displayed on a screen. As shown in the figure, a web address in which detailed information of the selected entity, that is, the entity existing where the identifier is located, is stored is displayed on the screen.

In the next step S520, the web address is linked and the linked window is displayed on the screen. Since the service provided by the web address displayed on the screen includes various information such as how to use the object, the linked window is displayed on the screen by linking the web address. The linked window is a screen corresponding to a web address, and may display detailed information of an object through the linked window. The linked window is displayed on a part of the screen or the entire screen. Linking the web address is implemented by connecting to the Internet through the network unit 230.

9 is a diagram illustrating an embodiment in which a window linked to a web address of the present invention is displayed on a screen. As shown in the figure, a web address for obtaining detailed information of an object is linked, and the linked window is displayed on a part of the screen.

On the other hand, while the present invention has been shown and described with respect to specific preferred embodiments, various modifications and variations of the present invention without departing from the spirit or field of the invention provided by the claims below It can be easily understood by those skilled in the art.

As described above, according to the present invention, even when the object is not displayed on the screen, the object information can be obtained, the amount of data for setting the area of the predetermined object displayed on the screen can be reduced, and the user provides the object information. You don't need to check whether it's an object.

Claims (12)

A time information reader for reading the time information on the program currently being viewed; An entity information storage unit for storing entity list information and entity display information; A position calculator for calculating the position of the specific object in accordance with the movement of the specific object displayed on the screen by the time information read by the time information reader and the object display information stored in the object information storage unit; A graphic generating unit generating a video signal for displaying the object list information stored in the object information storage unit on a screen, and generating a video signal for displaying an identifier at a position of the object calculated by the position calculating unit; An image synthesizer which synthesizes the image signal generated by the graphic generator and the program image data; And Controls the object list information of the object appearing on the screen with the time information read out by the time information reader, and outputs the object information storage. When a specific object is selected from the plurality of objects displayed on the screen, the object information of the selected object is displayed on the screen. And a control unit for controlling to be displayed. The method of claim 1, Further, under the control of the control unit, further comprising a selection object information storage unit for storing the object list information of the selected object, The graphic generating unit generates a video signal for displaying the object list information stored in the object information storage unit on the screen, generates a video signal for displaying an identifier at the position of the object calculated by the position calculation unit, the selected object information And a video signal for displaying the object list information stored in the storage on the screen. The method of claim 2, The control unit further includes a network unit for accessing a web address from which detailed information of the selected entity can be obtained. The graphic generating unit generates a video signal for displaying the object list information stored in the object information storage unit on the screen, generates a video signal for displaying an identifier at the position of the object calculated by the position calculation unit, the selected object information Generating a video signal for displaying the object list information stored in the storage on the screen, and generating a video signal for displaying the window of the web address connected through the network on the screen; . A time information reading unit reading the running time information on the currently viewed program, and the object information storing unit storing the object list information and the object display information; Determining whether an entity list display event has occurred after storing the entity list information and entity display information; When the object list display event occurs as a result of the determination, displaying the object lists of the plurality of objects displayed on the screen under the control of the controller using the time information read by the time information reader; Determining whether a specific object is selected from among a plurality of objects displayed on the screen after the object list is displayed on the screen; As a result of the determination of whether the specific object is selected, when a specific object is selected, the position calculator is configured to follow the movement path in which the selected object is displayed on the screen by the time information read by the time information reader and the object display information of the selected object. Calculating the position of the entity; And And displaying an identifier at the position of the computed entity. The method of claim 4, wherein Determining whether an event of storing selected object information has occurred after displaying an identifier at the position of the computed object; And And if the selected object information storage event occurs as a result of the determination, selecting object information storing unit further comprises storing the object list information of the selected object. The method of claim 5, If the selected object information storage event does not occur, determining whether the object detail information display event has occurred; And And displaying, on the screen, a web address for acquiring detailed information of the selected entity when the entity detail information display event occurs as a result of the determination. The method of claim 6, And after the displaying of the web address in which the detailed information of the object exists, the web address is linked through a network unit, and the linked window is displayed on the screen. . The method of claim 4, wherein And displaying the object list on one side of four sides of the screen. The method of claim 4, wherein And a plurality of objects displayed on the screen are a plurality of objects displayed on a still image screen. The method of claim 7, wherein And displaying the linked window on a part or the whole of the screen. The method according to claim 4 or 5, And the entity list information comprises a name, a number, and a web address for acquiring entity detail information. The method of claim 4, wherein The object display information comprises a display start time, display holding time, display start point coordinates, display end point coordinates of the object.

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