KR102235687B1 - Method for Controlling Display Device Providing Contents and Display Device Thereof - Google Patents

Abstract

Provided are a display device and a method of controlling the display device that enable a user to use information on content reproduced by another user's device when a user selects a content to be received and played back through a display device. The method of controlling a display device includes the steps of: providing, by a first display device, first user identification information to a server, and matching second user identification information and second user identification information corresponding to the first user identification information from the server. Acquiring electronic content guidance information including the reproduction content identification information, and displaying a user interface for selecting a content corresponding to the reproduction content identification information on the first display device based on the electronic content guidance information, and a user And if the content is selected using the interface, reproducing the selected content.

Description

TECHNICAL FIELD The method for controlling a display device providing content, and a display device thereof TECHNICAL FIELD

The present invention relates to a display device and a server for playing content. Further, the present invention relates to a method of controlling a display device and a server. More specifically, the present invention relates to a method and apparatus for providing content using a display device and a server capable of data communication and a social network service (SNS).

With the development of technology, various types of display devices have been spread. In addition, display devices can perform various functions such as data communication as well as content reproduction.

With the spread of display devices, various contents are provided through display devices. For example, content produced by a broadcasting company is transmitted by a cable, terrestrial or satellite broadcasting provider through a radio wave transmission medium such as a broadcasting network, and the viewer has a receiver capable of receiving each transmission medium, or Content was viewed through a display device connected to the receiver.

With the spread of various contents, a method for users to select desired contents has become necessary. For example, in the related art, a user directly selects a desired broadcast channel using a channel change button, but recently, an electronic program guide (EPG) for providing information on content to the user is provided to the user. The electronic program guide is a guide service for a broadcast program that provides broadcast time and content of TV programs, performer information, and the like using an empty frequency band or additional channels of the broadcast. The received electronic program guide may be stored in a set-top box or a storage device in a TV receiver. Viewers can perform operations such as program selection, program reservation, pay per view program order, program search, and video recording by manipulating electronic program information using a remote control or the like.

Meanwhile, according to the recent increase in Internet use around the world, a certain amount of users such as MySpace (www.myspace.com) in the US, Facebook (www.facebook.com), and Cyworld in Korea (www.cyworld.com) has been settled. Various types of social network services in which relationships are established are being implemented.

Accordingly, there is a need for a technology that enables the user to share the content consumed by the user and the content consumed by another user for which a relationship is established through a social network service.

An embodiment of the present invention provides a display device and a server that enable a user to use information on content played by another user's device when selecting content to be received and played back through a display device. Further, a method of controlling the display device and a method of controlling a server are provided.

As a technical means for achieving the above-described technical problem, a method of controlling a first display device according to an embodiment of the present invention includes the steps of, by the first display device, providing first user identification information to a server, and from the server. Acquiring electronic content guide information including second user identification information corresponding to the first user identification information and reproduction content identification information matched with the second user identification information, and the electronic content guide information Based on the display, a user interface for selecting a content corresponding to the reproduction content identification information may be displayed on the first display device, and when the content is selected using the user interface, reproducing the selected content.

In addition, according to another embodiment, the user interface includes profile information corresponding to the second user identification information, and the displaying of the user interface includes the second user identification information and the second user identification information according to an intimacy value between the first user identification information and the second user identification information. It may include displaying profile information based on the order in which user identification information is sorted.

In addition, according to another embodiment, the intimacy value is determined based on a comparison result of at least one of a preferred content type, personal information, and viewing history information corresponding to each of the first user identification information and the second user identification information. It can be characterized by that.

In addition, the first display device control method according to another embodiment further includes the step of setting a content sharing mode, and the step of playing the selected content using a user interface is a sorted order when a preset input is received. And sequentially changing the content played on the first display device, and the preset input corresponds to a channel change command of the first display device in a state in which the content sharing mode is not set. I can.

In addition, according to another embodiment, the electronic content guide information may further include viewing history information corresponding to the second user identification information, and the user interface displayed on the first display device may include viewing history information.

According to an embodiment, a method of controlling a server includes receiving first user identification information from a first display device, second user identification information from a second display device, and playback content of content being played on the second display device. Receiving identification information, calculating an intimacy value between the first user identification information and the second user identification information, generating electronic content guide information aligned based on the intimacy value, and providing electronic content guide information 1 transmitting to a display device, and the electronic content guide information may include second user identification information and the reproduction content identification information matched with the second user identification information.

In addition, according to another embodiment, the intimacy value is determined based on a comparison result of at least one of a preferred content type, personal information, and viewing history information corresponding to each of the first user identification information and the second user identification information. You can do it.

In addition, according to another embodiment, the electronic content guide information may further include viewing history information corresponding to the second user identification information.

The first display device according to an embodiment includes a communication unit that transmits first user identification information to a server, and matches second user identification information and second user identification information corresponding to the first user identification information from the server through the communication unit. A control unit configured to obtain electronic content guide information including the reproduced content identification information, and a display unit for displaying a user interface for selecting a content corresponding to the play content identification information, based on the electronic content guide information, and the control unit It may be characterized in that the display unit is controlled to play the selected content using the user interface.

In addition, according to another embodiment, the user interface includes profile information corresponding to the second user identification information, and the control unit is based on the sorted order according to the intimacy value between the first user identification information and the second user identification information. The display unit may be controlled to display profile information.

In addition, according to another embodiment, the intimacy value is determined based on a comparison result of at least one of a preferred content type, personal information, and viewing history information corresponding to each of the first user identification information and the second user identification information. It can be characterized.

In addition, according to another embodiment, the controller sets a content sharing mode according to a user input to the first display device, controls the display unit to output a user interface according to the content sharing mode is set, and a preset input is When received, the content played on the display unit is sequentially changed based on the sorted order, and a preset input corresponds to a channel change command of the first display device in a state in which the content sharing mode is not set. I can.

In addition, according to another embodiment, the viewing history information corresponding to the second user identification information may be further included, and the user interface displayed on the first display device may include viewing history information.

The server according to an embodiment is a communication unit that receives first user identification information from a first display device, second user identification information from a second display device, and reproduction content identification information of content being played on the second display device And

A control unit that calculates an intimacy value between the first user identification information and the second user identification information, and generates electronic content guide information aligned based on the intimacy value, and the communication unit transmits the electronic content guide information to the first display device. And, the electronic content guide information may include second user identification information and reproduction content identification information matched with the second user identification information.

In addition, according to another embodiment, the intimacy value is determined based on a comparison result of at least one of a preferred content type, personal information, and viewing history information corresponding to each of the first user identification information and the second user identification information. You can do it.

In addition, according to another embodiment, the electronic content guide information may further include viewing history information corresponding to the second user identification information.

A computer-readable recording medium according to an embodiment may be characterized in that a program for executing the above-described method is recorded on a computer.

1 is a conceptual diagram illustrating a system including a display device and a server according to an exemplary embodiment.
FIG. 2 is a diagram illustrating a process in which electronic content guide information is provided and a display device reproduces content according to an embodiment.
3 is a flowchart illustrating a process of controlling a display device according to an exemplary embodiment.
4 is a flowchart illustrating a process of controlling a server according to an exemplary embodiment.
5 is a schematic structural diagram of a server according to an embodiment.
6 is a schematic structural diagram of a display device according to an exemplary embodiment.
7 is a structural diagram illustrating a display device according to an exemplary embodiment.
8 is a conceptual diagram illustrating electronic content guide information according to an embodiment.
9 is a conceptual diagram illustrating electronic content guide information according to another embodiment.
10 is a diagram illustrating an example in which a user sets a content sharing mode on a display device according to an exemplary embodiment.
11 is a diagram illustrating an example in which a display device outputs a user interface for selecting content, according to an exemplary embodiment.
12 is a diagram illustrating an example in which a display device outputs a user interface for selecting content according to another embodiment.
13 is a diagram illustrating a part of a user's interface for selecting content in more detail according to some embodiments.
14 is a flowchart illustrating a process of a server providing electronic content guide information according to some embodiments.
15 is a flowchart illustrating a process of outputting a user interface and playing content by a display device according to another exemplary embodiment.
16 is an exemplary diagram illustrating a user interface output to a display device according to an embodiment corresponding to FIG. 14 or 15.
17 is a conceptual diagram illustrating a method of creating a user group according to an embodiment corresponding to FIG. 14 or 15.

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 the present invention. However, the present invention may be implemented in various different forms and is not limited to the embodiments described herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part is said to be "connected" with another part, this includes not only "directly connected" but also "electrically connected" with another element interposed therebetween. . Also, that a part is "connected" with another part includes a case in which a part is in a state capable of communicating with another part through signal transmission/reception.

In addition, when a part "includes" a certain component, it means that other components may be further included rather than excluding other components unless specifically stated to the contrary.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The terms used in the present application have selected general terms that are currently widely used as possible while considering functions in the present invention, but this may vary according to the intention of a technician working in the field, precedents, or the emergence of new technologies. In addition, in certain cases, there are terms arbitrarily selected by the applicant, and in this case, the meaning of the terms will be described in detail in the description of the corresponding invention. Therefore, the terms used in the present invention should be defined based on the meaning of the term and the overall contents of the present invention, not a simple name of the term.

Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof does not preclude in advance.

The application referred to throughout the specification refers to a set of computer programs designed to perform a specific task based on the connection between devices to be described later. For example, applications include game applications, musical instrument playing applications, video playback applications, music playback applications, map applications, broadcast applications, exercise support applications, medical applications, payment applications, vehicles (e.g., cars, buses, airplanes, Or a ship, etc.) an automatic navigation application, a peripheral device control application, and a combination of each of the above applications.

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

1 is a conceptual diagram illustrating a system including a display device and a server according to an exemplary embodiment.

The first display device 110 and the second display devices 120-1, 120-2, and 120-3 are devices capable of playing content and communicating with data. For example, the first display device 110 and the second display devices 120-1, 120-2, and 120-3 include a television, a mobile phone, a smartphone, a personal digital assistant (PDA), and a DMB. (Digital Multimedia Broadcasting) It can be implemented in various forms such as a receiving device. However, the display device is not limited to the above example.

According to an embodiment, the first display device 110 may log on to the server 100 by transmitting the first user identification information to the server 100.

As shown in FIG. 1, the second display devices 120-1, 120-2, and 120-3 may be a plurality of devices, but for convenience of description, one second display device 120-1 Only the control method and configuration for the will be described. The description of the second display device 120-1 may be applied to other second display devices 120-2 and 120-3. According to an embodiment, the second display device 120-1 may log on to the server 100 by transmitting the second user identification information to the server 100.

In addition, in the present specification, the first display device 110 may perform the function of the second display device 120-1. Also, the second display device 120-1 may perform the function of the first display device 110.

The second display device 120-1 may transmit the reproduction content identification information to the server 100. The reproduction content identification information means content identification information for identifying content being reproduced in the second display device 120-1. For example, when a TV broadcast program is being played on a TV, channel information for identifying a channel for receiving the TV broadcast program may be transmitted to the server. For another example, when the display device plays a video using Video On Demand (VOD), the display device may transmit location information such as a URL for identifying the location of the video to the server. That is, the content identification information refers to information capable of identifying the content, such as channel information or location information of the content. The reproduction content identification information in the present specification is not limited thereto, and any information for identifying the content may be included in the reproduction content identification information.

The server 100 may generate electronic content guide information including reproduction content identification information received from the second display device 120-1. The server 100 may transmit the generated electronic content guide information to the first device 110. Here, the electronic content guide information may include profile information that is information about a user of the second display device 120-1. When there are a plurality of second display devices 120-1, the electronic content guide information may include a user list. Also, the information on the user of the second display device 120-1 may include second user identification information received from the second display device 120-1. According to an embodiment, the reproduction content identification information included in the electronic content guide information may be matched with the second user identification information. The second user identification information corresponding to the first user identification information may mean second user identification information for which a relationship is established with respect to the first user identification information. For example, the server 100 is played back on the second display device 120-1 logged on using the second user identification information for which a friend relationship is established with respect to the first user identification information in the database of the server 100. Electronic content guide information including reproduction content identification information for the content may be generated. Alternatively, the server 100 may generate electronic content guide information including playback content identification information received from a display device of a user for whom a friend relationship has been established in a separate social network service.

The first display device 110 may output a user interface for selecting content based on the electronic content guide information received from the server 100. When the reproduction content identification information included in the electronic content guide information is selected using the user interface, the first display device 110 may play the content corresponding to the reproduction content identification information. For example, when user 1 selects user 2 displayed on the first display device of user 1, the same broadcast program as the broadcast program played on the second display device of user 2 may be played on the first display device.

FIG. 2 is a diagram illustrating a process in which electronic content guide information is provided and a display device reproduces content according to an embodiment.

First, the second display device 120 may play content (S210).

Here, the content is video content (e.g., TV program video, VOD (Video On Demand), personal video (UCC: User-Created Contents), music video, YouTube video, etc.), still image content (e.g., photo, picture, etc.) , Text content (e.g., e-books (poetry, novels), letters, business files, web pages, etc.), music content (e.g., music, performance songs, radio broadcasts, etc.), applications (widgets, games, video calls, etc.) It may contain types of content.

Thereafter, the second display device 120 may transmit the second user identification information and the reproduction content information to the server 100 (S220). Here, the second user identification information may mean a user ID for logging on to the server 100. The second display device 120 may log on to the server 100 by transmitting the second user identification information to the server 100. In addition, the second user identification information may be matched with the reproduction content information received from the second display device 120.

According to an embodiment, the second display device 120 identifies the content by using image recognition for an image included in the content reproduced in step S210, and transmits reproduction content information determined based on the identified result to the server ( 100). In addition, according to another embodiment, the second display device 120 identifies the content by using speech recognition for the voice included in the content played in step S210, and displays the playback content information determined based on the identified result. It can be transmitted to the server 100. According to another embodiment, the second display device 120 identifies content based on a result of collating the electronic program guide received from a content provider, and transmits reproduction content identification information determined based on the identified result to the server ( 100).

According to an embodiment, the server 100 may further obtain information on a type of content played by the first display device 110 or the second display device 120, a content viewing rate, and a preference for content. . The type of content played on the display device may mean information on a type corresponding to a video played on the second display device 120 among movies, dramas, and news. The content viewing ratio refers to the viewing time compared to the total time of the content. For example, when the total playing time of the video content is 2 hours and the video content is played for 1 hour by the display device, the content viewing rate may be 50 percent. The preference for content refers to the degree to which a user prefers the content. For example, the preference for content may mean a rating input by a user for the content.

Thereafter, the first display device 110 may transmit the first user identification information to the server 100 (S230). Here, the first user identification information may be a user ID for logging on to the server 100.

Thereafter, the server 100 may calculate an intimacy value between the first user identification information and the second user identification information (S240). According to an embodiment, the server 100 may calculate an intimacy value based on information related to content or information related to a user.

The intimacy value may be calculated by various methods according to various methods according to embodiments. For example, an intimacy value may be calculated by determining a priority value for a user according to a priority criterion or by giving a weight value according to the priority criterion. For a more detailed example, the priority criterion is i) the number of times a response to the same content is input at the same period or at the same time, ii) the number of times the same content is viewed, iii) the number of times the same content is viewed at the same time, iv It may be determined in the order of) the number of times that content belonging to the same category is viewed, v) the number of friends registered as friends together by two users, and vi) the time when random content is viewed at the same time. Here, the server 100 may determine an intimacy priority for a user according to a criterion having a high priority, and may determine an intimacy priority again for users of the same priority according to a criterion of a next priority. Alternatively, the server 100 may determine the intimacy value by assigning a weight to each criterion according to the priority, and summing a value obtained by multiplying the weight by the score according to each criterion. However, it is not limited thereto.

The information related to the content may include viewing history information, which is information about the content played by the first display device 110 and the second display device 120. The viewing history information may include content identification information corresponding to a content viewed in the past, a content type, a content viewing rate, and preferences of the first user and the second user for the content. That is, the server 100 is the degree to which the type of content played by the first display device 110 and the second display device 120, the content viewing rate, and the preferences of the first user and the second user for the content match. The value of can be calculated as an intimacy value. The type of content played on the display device may mean information on a type corresponding to a video played on the second display device 120 among movies, dramas, and news. The content viewing ratio refers to the viewing time compared to the total time of the content. For example, when the total playing time of the video content is 2 hours and the video content is played for 1 hour by the display device, the content viewing rate may be 50 percent. The preference for content refers to the degree to which a user prefers the content. For example, the preference for content may mean a rating input by a user for the content.

The user-related information may include the number of times the first user refers to the playback content of the second user, the user's residence area, the user's age, the user's gender, and the user's occupation. That is, the server 100 may calculate the degree to which the number of times the first user refers to the playback content of the second user, the user's residence area, the user's age, the user's gender, and the user's occupation, as the intimacy value. . The number of times the first user refers to the playback content of the second user means the number of times the first display device 110 plays the content played on the second display device 120 through an operation corresponding to S280 of this drawing. do. The user's residence area, the user's age, the user's gender, and the user's occupation are personal information about the user, and may be information transmitted from the display device to the server or stored in the server by matching user identification information.

Thereafter, the server 100 may generate electronic content guide information based on the intimacy value (S250). According to an embodiment, the server 100 may arrange the electronic content guide information in the order of the size of the intimacy value. For example, if the intimacy value corresponding to the second user identification information is 80, the intimacy value corresponding to the third user identification information is 60, and the intimacy value corresponding to the fourth user identification information is 70, the server 100 May arrange the order of the user identification information included in the electronic content guide information in the order of the second user identification information, the fourth user identification information, and the third user identification information. That is, when the user list is included in the electronic program information, the user list may be sorted based on the intimacy value.

Thereafter, the server 100 may transmit the generated electronic content guide information to the first display device 110 (S260).

According to an embodiment, the electronic content guide information transmitted to the first display device 110 may include second user identification information and reproduction content identification information matched with the second user identification information. According to another embodiment, the electronic content guide information may further include viewing history information, which is a history of content played on the second display. According to another embodiment, the electronic content guide information includes a list of users playing content corresponding to the playback content identification information, a list of users playing content included in the viewing history information, and content included in the electronic content guide information. It may further include metadata and the like. Here, the metadata of the content means information such as a preview image and a thumbnail of the content. However, it is not limited thereto.

Thereafter, the first display device 110 may output a user interface for selecting content (S270). User interfaces for selecting content may be implemented in various ways.

According to an embodiment, the user interface for selecting content may display a part of a user list included in the electronic content guide information. In this case, the first display device 110 may display a user list arranged in the order of intimacy or a part of the user list according to the order of the second user identification information. Here, the display device 110 may display user identification information included in the user list. Alternatively, the first display device 110 may display profile information corresponding to user identification information included in the user list. Here, the profile information means information related to a user, such as a user's name, picture, or nickname. According to an embodiment of the present invention, the first display device 110 may display various pieces of information through which the user can identify the user of the second display device 120.

In addition, according to another embodiment, the user interface for selecting content includes viewing history information corresponding to the second user identification information, a list of users playing content corresponding to the reproduction content identification information, and content included in the viewing history information. At least one of a list of users who have played a video and metadata of content included in the electronic content guide information may be further displayed.

Thereafter, the first display device 110 may play the selected content using the user interface (S280).

According to an embodiment, the user may select an object corresponding to the second user identification information from the user list displayed in step S270. When an object corresponding to the second user identification information is selected, in step S280, the first display device 110 may select the content by using the reproduction content identification information matched with the second user identification information. By playing the selected content, the first display device 110 can play the same content as the content being played on the second display device 120. That is, for example, a user may watch a broadcast program identical to a broadcast program that another multi-user registered as a friend by the user is watching through another user's TV through the user's TV.

According to another embodiment, the user may select an object corresponding to one or more content identification information from the viewing history information displayed in step S270. When an object corresponding to one or more content identification information is selected, the first display device 110 may select the content by using the content identification information corresponding to the selected object. By playing the selected content, the first display device 110 can play the content having a history played back on the second display device 120. That is, for example, a user may view content that another user registered as a friend has previously viewed through another user's TV.

According to another embodiment, the user interface may not be directly displayed on the screen of the first display device 110 in step S270. In this case, although not shown in FIG. 2, the first display device 110 may further include setting a content sharing mode according to a user input. When a preset input is received while the content sharing mode is set, in step S280, the first display device 110 sequentially displays the content played on the first display device 110 based on the sorted order based on the intimacy value. You can change it. For example, after a user sets a content sharing mode using a remote control button input or voice recognition for a TV, each time the user presses a channel button on the remote control, the TV is the user with the 1st, 2nd, and 3rd intimacy values. Contents being played on each of the display devices of may be sequentially played back.

3 is a flowchart illustrating a process of controlling a display device according to an exemplary embodiment.

First, the display device may transmit first user identification information to the server (S310). Thereafter, the display device may obtain electronic content guide information including second user identification information corresponding to the first user identification information and reproduction content identification information matched with the second user identification information (S320). The display device may receive electronic content guide information from a server, or separately receive information to be included in the electronic content guide information and generate electronic content guide information. Here, the second user identification information corresponding to the first user identification information may mean user identification information for which a friend relationship is established with respect to the first user identification information. Further, the electronic content identification information may include second user identification information arranged according to an intimacy value between the first user identification information and the second user identification information. The intimacy value may be determined based on a comparison result of at least one of a preferred content type, personal information, and viewing history information corresponding to each of the first user identification information and the second user identification information.

According to an embodiment, the electronic content guide information received in step S320 may further include viewing history information corresponding to the second user identification information. The viewing history information may include information on the history of content played in the past by the display device logged in to the server using the second user identification information.

Thereafter, the display device may output a user interface for selecting content based on the electronic content guide information obtained in step S320 (S330). The user interface may include an object for selecting user identification information or content identification information. Here, the content identification information may include reproduction content identification information. The reproduction content identification information is information for identifying the content currently being played on the display device logged in to the server by using the second user identification information. The user interface for selecting content may be variously modified according to embodiments.

According to an embodiment, the user interface may include an object displaying profile information corresponding to the second user identification information. As an object displaying profile information corresponding to the second user identification information is selected, the display apparatus may select a content by using the reproduction content identification information corresponding to the second user identification information of the selected object.

Here, according to an embodiment, the display device may change the second user identification information selected using the channel change button according to the order in which the intimacy value is sorted. According to another embodiment, when the display device recognizes a user's voice such as'previous' or'next', it may select second user identification information in a previous order or second user identification information in a next order. According to another embodiment, the display device may recognize a user's gesture and select second user identification information in a previous order or second user identification information in a next order based on the recognized gesture. According to another embodiment, based on an input received according to a direction in which the remote control is tilted, the display device may select second user identification information in a previous order or second user identification information in a next order.

According to another embodiment, the user interface may include an object displaying a viewing history corresponding to the second user identification information. When any one of the displayed viewing histories is selected, the display device may select a content corresponding to the viewing histories.

In step S330, the user interface may be displayed based on the order in which the second user identification information is arranged according to the intimacy value. For example, the display device may sequentially display profile information of a user having the highest intimacy.

Thereafter, the display device may play the content selected in step S330 by using the displayed user interface (S340).

4 is a flowchart illustrating a process of controlling a server according to an exemplary embodiment.

The server may receive first user identification information from the first display device (S410). Also, the server may receive second user identification information and reproduction content identification information from the second display device (S420). Steps S410 and S420 do not have to be performed at the same time.

According to an embodiment, the server may store reproduction content identification information received from the second display device, and generate or update viewing history information including a history of the received reproduction content identification information.

Thereafter, the server may calculate an intimacy value between the first user identification information and the second user identification information (S430). The intimacy value may be calculated in various ways according to exemplary embodiments. According to an embodiment, the intimacy value may be determined based on a comparison result of at least one of a preferred content type, personal information, and viewing history information corresponding to each of the first user identification information and the second user identification information.

Thereafter, the server may generate content guide information including the second user identification information aligned based on the intimacy value calculated in step S430 (S440). In addition, the content guide information may further include reproduction content identification information corresponding to the second user identification information. According to an embodiment, the electronic content guide information may further include at least one of viewing history information corresponding to the second user identification information, profile information corresponding to the second user identification information, and metadata of the content.

Thereafter, the server may transmit the electronic content guide information generated in step S440 to the first display device (S450).

5 is a schematic structural diagram of a server according to an embodiment. FIG. 5 is for explaining an embodiment, and the server may include more components than those shown in FIG. 5, or other components that replace functions of the components shown in FIG. 5.

The server according to an embodiment may further include a communication unit 510 performing communication with each component inside the server or with the outside, and a control unit 520 capable of controlling each operation of the server. The control unit 520 may include at least one processor.

The communication unit 510 may receive first user identification information from the first display device, second user identification information from the second display device, and playback content identification information of the content being played on the second display device.

The controller 520 may calculate an intimacy value between the first user identification information and the second user identification information, and may generate electronic content guide information arranged based on the intimacy value. Here, the electronic content guide information may include second user identification information arranged based on the intimacy value and reproduction content identification information matched with the second user identification information.

The electronic content guide information generated by the control unit 520 may be transmitted to the first display device through the communication unit 510.

6 is a schematic structural diagram of a display device according to an exemplary embodiment. FIG. 6 is for explaining an embodiment, and the display device may include more components than those shown in FIG. 6 or other components that replace functions of the components shown in FIG. 6.

The display device according to an embodiment includes a communication unit 610 that communicates with each component inside the display device or with the outside, a controller 620 that controls each operation of the display device, and a display that can display a screen. It may include a part 630.

The communication unit 610 may transmit the first user identification information to the server. The controller 620 may obtain electronic content guide information including second user identification information corresponding to the first user identification information and reproduction content identification information matched with the second user identification information through the communication unit 610.

The display unit 630 may display a user interface for selecting a content corresponding to the reproduction content identification information based on the obtained electronic content guide information. The controller 620 may select content based on a user input to the user interface and play the selected content.

7 is a structural diagram illustrating a display device according to an exemplary embodiment. FIG. 1 is only a display device according to an exemplary embodiment, and the display device may include fewer or more components than the components illustrated in FIG. 1.

The display device 110 may be connected to an external device (not shown) using the communication unit 710 or the connector 754. The external device may include at least one of another device (not shown), a mobile phone (not shown), a smart phone (not shown), a tablet PC (not shown), and a server (not shown).

The display device 110 includes a display unit 730, a control unit 720, a communication unit 710, a multimedia module 740, an input/output module 750, a storage unit 760, and a power supply unit 770. I can. The communication unit 710 may include at least one of a mobile communication module 711, a wireless LAN module 712, a short-range communication module 713, and a wired communication module (not shown). The multimedia module 740 may include at least one of a broadcast communication module 741, an audio playback module 742, and a video playback module 743. The input/output module 750 may include at least one of a button 751, a microphone 752, a speaker 753, a connector 754, a camera module 755, and an infrared module 756.

The controller 720 stores the CPU 721, a ROM 722 in which a control program for controlling the display device 110 is stored, and a signal or data input from the outside of the display device 110, or the display device 110 It may include a RAM 723 used as a storage area for an operation performed on the computer. The CPU 721 may include a plurality of processors such as single core, dual core, triple core, or quad core. The CPU 721, the ROM 722, and the RAM 723 may be interconnected through an internal bus (BUS).

The controller 720 may control the communication unit 710, the display unit 730, the multimedia module 740, the input/output module 750, the storage unit 760, and the power supply unit 770.

The mobile communication module 711 may allow the display device 110 to be connected to an external device through mobile communication using at least one (one or more) antennas (not shown) under the control of the controller 720. . The mobile communication module 711 includes a mobile phone (not shown), a smartphone (not shown), a tablet PC (not shown), or another device (not shown) having a phone number input to the display device 110. It is possible to transmit/receive wireless signals for transmitting voice calls, video calls, text messages (SMS), or multimedia messages (MMS).

The wireless LAN module 712 may connect to the Internet at a place where a wireless access point (AP) (not shown) is installed under the control of the controller 720. The wireless LAN module 712 may support the wireless LAN standard IEEE802.11x of the American Institute of Electrical and Electronic Engineers (IEEE). The short-range communication module 713 may wirelessly perform short-range communication between the display device 110 and an external device (not shown) in a short distance under the control of the controller 720. The short-range communication method may include Bluetooth, infrared data association (IrDA), and Zig-bee method. The wired communication module (not shown) may be connected to a wired communication network such as the Internet using wired communication.

The multimedia module 740 may include a broadcast communication module 741, an audio playback module 742, and a video playback module 743. The broadcast communication module 741 is a broadcast signal (e.g., a TV broadcast signal, a radio broadcast signal or a data broadcast signal) and broadcast transmitted from a broadcast station through a broadcast communication antenna (not shown) under the control of the controller 720. Additional information (eg, Electric Program Guide (EPG) or Electric Service Guide (ESG)) may be received. The audio reproducing module 742 may play a stored or received digital audio file under the control of the controller 720. The video playback module 743 may play a stored or received digital video file under the control of the controller 720. The video reproducing module 743 may play a digital audio file.

The input/output module 750 may include at least one of a plurality of buttons 751, a microphone 752, a speaker 753, a connector 754, a camera module 755, and an infrared module 756.

The button 751 may be formed on the front, side or rear of the housing of the display device 110, and a power button (not shown), a volume button (not shown), a channel change button (not shown), and a menu button ( (Not shown) may include at least one of.

The microphone 752 may generate an electric signal by receiving a voice or sound under the control of the controller 720.

The speaker 753 may output sounds corresponding to various signals of the communication unit 710, the multimedia module 740, or the camera module 755 to the outside of the display device 110 under the control of the controller 720. The speaker 753 may output a sound corresponding to a function performed by the display device 110. One or a plurality of speakers 753 may be formed at appropriate positions or positions of the housing of the display device 110.

The connector 754 may be used as an interface for connecting the display device 110 and an external device (not shown) or a power source (not shown). Data stored in the storage unit 760 of the display device 110 is transmitted to an external device (not shown) or an external device (not shown) through a wired cable connected to the connector 754 under the control of the controller 720 You can receive data from

The camera module 755 may include a camera that photographs a still image or a video under the control of the controller 720.

The infrared module 760 may receive a user input based on an infrared signal. For example, it is possible to receive an input received from a remote control.

The storage unit 760 is a signal or data input/output corresponding to the operation of the communication unit 710, the multimedia module 740, the input/output module 750, and the display unit 730 under the control of the controller 720. Can be saved. The storage unit 760 may store control programs and applications for controlling the display device 110 or the controller 720.

The term “storage unit” may include a storage unit 760, a ROM 722 in the control unit 720, a RAM 723, or a memory card (not shown) mounted on the display device 110. The storage unit may include a nonvolatile memory, a volatile memory, a hard disk drive (HDD), or a solid state drive (SSD).

The power supply unit 770 may supply power to at least one battery (not shown) disposed in the housing of the display device 110 under the control of the controller 720. Also, the power supply unit 770 may supply power input from an external power source (not shown) to each unit of the display device 110 through a wired cable connected to the connector 754.

The display unit 730 may output user interfaces corresponding to various services to the user.

8 is a conceptual diagram illustrating electronic content guide information according to an embodiment.

The electronic content guide information according to an embodiment may include a related user ID, which is user identification information that may correspond to each of the four second display devices. In addition, it may include a reproduction content ID, which is reproduction content identification information capable of identifying the content being reproduced in the second display device corresponding to the user identification information. Here, the related user IDs may be arranged according to the order of intimacy between user001, user002, user003, and user004 and the first user identification information corresponding to the first display device. That is, referring to FIG. 8, user001 may be the user identification information having the highest intimacy in relation to the first user identification information, and user004 may be the user identification information having the lowest intimacy.

9 is a conceptual diagram illustrating electronic content guide information according to another embodiment.

Referring to FIG. 9, electronic content guide information according to an embodiment may include profile information 901, reproduction content identification information 902, user identification information 903, and viewing history information 904. The user identification information 903 may be sorted according to an intimacy value.

The reproduction content identification information 902 includes information capable of identifying the content being reproduced on the display device corresponding to the user identification information 903. Referring to FIG. 9, the electronic content guide information shown in FIG. 9 means that user001 is watching a content corresponding to Content_011. User002, user003, and user004 mean that you are watching Content_021, Content_031, and Content_041, respectively.

The viewing history information 904 includes a history of content played in the past in the display device corresponding to the user identification information 903. Referring to FIG. 9, the electronic content guide information shown in FIG. 9 means that user001 viewed Content_012 from 1 hour to 2 hours ago, viewed Content_013 3 hours ago, and Content_014 4 hours ago. do.

10 is a diagram illustrating an example in which a user sets a content sharing mode on a display device according to an exemplary embodiment.

Referring to FIG. 10, the user 1000 may set a content sharing mode on the display device 110 by pressing a button provided on the remote control 1010. 10 illustrates a method of setting a content sharing mode according to an embodiment, and a content sharing mode may be set through another method.

When the content sharing mode is set, the display device 110 may change the content played on the display device 110 based on the electronic content guide information.

11 is a diagram illustrating an example in which a display device outputs a user interface for selecting content, according to an exemplary embodiment.

When the content sharing mode is set as shown in FIG. 10, the display device 110 according to an embodiment may display a user interface 1100 for selecting content based on electronic content guide information. The user interface 1100 includes an object displaying profile information 1101 corresponding to user identification information 1103, reproduction content information 1102 corresponding to user identification information 1103, and user identification information 1103. can do. In this case, each object may be displayed according to the order in which the user identification information 1103 is arranged in the electronic content guide information.

As illustrated in FIG. 11, when an object corresponding to user002 is selected while the user interface 1100 is displayed, the display device 110 may play the content corresponding to Content_021.

12 is a diagram illustrating an example in which a display device outputs a user interface for selecting content according to another embodiment.

When the content sharing mode is set as shown in FIG. 10, the display device 110 according to an embodiment may display a user interface for selecting content based on electronic content guide information as shown in FIG. 12. The user interface according to the present embodiment includes an object 1201 corresponding to profile information, an object 1202 corresponding to user identification information, an object 1203 corresponding to playback content identification information, and an object corresponding to content viewing history information ( 1204), and an object 1205 that displays preview information of the content.

When the object 1203 corresponding to the reproduction content identification information is selected, the display device 110 may select the content by using the reproduction content identification information'content_021' corresponding to the selected object 1203 and play the selected content. . In addition, when the object 1204 corresponding to the content viewing history information is selected, the display device 110 selects the content using the reproduction content identification information'content_025' corresponding to the selected object 1204, and plays the selected content. I can.

In addition, according to an embodiment, the user interface may further display additional information such as an intimacy ranking of user identification information and a number of times a content viewing history is referenced to a friend.

13 is a diagram illustrating a part of a user's interface for selecting content in more detail according to some embodiments.

According to some embodiments, the display device 110 may display a profile information display area 1310, a preview area 1320, and a viewing history area 1330 for each user included in the electronic content guide information. The display device 110 may display a plurality of user interface objects 1300 corresponding to a plurality of users. In addition, the display device 110 may sequentially display the plurality of user interface objects 1300 according to the user's rank of intimacy values.

The profile information display area 1310 refers to an area that displays profile information of a user corresponding to the user interface object 1300. In the profile information display area 1310, a profile image 1311 for a user corresponding to the user interface object 1300, user identification information 1312, connection status 1313, and intimacy ranking 1314 are displayed. I can. However, it is not limited thereto.

The profile image 1311 may be an image registered by a user. Alternatively, the profile image 1311 may include a badge for a corresponding user. The badge may be an image representing a category of content. Here, when the number of users using content of a specific category is greater than or equal to a threshold value by selecting a corresponding user, the display device 110 may display a badge indicating the specific category. For example, when five or more users have watched a drama by selecting'user002', the display device may display a profile image 1311 including a badge indicating the drama.

The user identification information 1312 may mean information for identifying a user corresponding to the user interface object 1300. For example, the user identification information 1312 may be an ID, a name, or a nickname for logging in to a service for viewing content.

The connection state 1313 may be information indicating whether a user corresponding to the user interface object 1300 is connected to a service for viewing content.

The intimacy ranking 1314 may be information indicating a ranking of intimacy values between a user corresponding to the user interface object 1300 and a user of the display device 110.

A preview image for the selected content may be displayed in the preview area 1320. Here, the preview image may be an image generated according to an interest expression operation for the user's content corresponding to the user interface object 1300. The operation of expressing interest in content may be, for example, an operation of capturing a content output screen or an operation of inputting a command to generate a highlight image including a partial section of the content.

In the viewing history display area 1331, among broadcaster information 1331, title 1443, viewing time 1333, and the number of viewed users 1334 for the content viewed by the user corresponding to the user interface object 1300. At least one may be displayed. When one of the contents displayed in the viewing history display area 1331 is selected, a preview image of the selected content may be displayed in the preview area 1320 or the selected content may be displayed on the entire screen of the display device 110. Alternatively, when the user of the display device 110 does not have permission for the selected content, the display device 110 may output a screen for purchasing permission for the selected content.

14 is a flowchart illustrating a process by which a server provides electronic content guide information according to some embodiments. According to some embodiments, the server may generate content guide information based on the process illustrated in FIG. 14 by replacing steps S430 and S440 of FIG. 4.

First, the server 100 may obtain profile information for a plurality of users. Profile information for a plurality of users may be information stored in the server or information on users of the first display device 110 and the second display device 120-1 to 120-3 connected to the server 100. . The profile information may mean information summarizing the characteristics of a user. For example, the profile information may include at least one of the user's age, gender, residential area, type of preferred content, interest, and current emotion.

In step S1410, the server 100 may create a plurality of user groups based on profile information of users. The server 100 may create a user group based on the similar profile information when the number of users having similar profile information is equal to or greater than a predetermined threshold. For example, among users of the second display devices 120-1 to 120-3 connected to the server 100, a profile having a history of watching golf-related broadcasts or having a hobby of golf is 30 to 39 years of age. If there are two or more users having information, the server 100 may create a user group called “goers in their 30s”.

Thereafter, in step S1420, the server 100 may generate electronic content guide information including a plurality of user groups generated in step S1410. When the plurality of user groups includes the first user group and the second user group, the electronic content guide information may include information on content corresponding to the first user group and information on content corresponding to the second user group. I can. Here, the information on the content corresponding to the user group may be identification information for identifying the content viewed or viewed by a user belonging to the first user group. Alternatively, the information on the content corresponding to the user group may be identification information for identifying the recommended content according to the characteristics of the user group. However, it is not limited thereto. For example, when the user group is “in their 20s who want to go on a trip”, the information on the content corresponding to the user group may be information indicating a broadcast program related to the trip.

Thereafter, in step S1430, the server 100 may transmit the generated electronic content guide information to the first display device 110. The first display device 110 may display a plurality of user groups included in the electronic content guide information. The user may input (eg, input using a remote control) for selecting at least one of a plurality of user groups displayed on the first display device 110. The first display device 110 receiving an input by the user may output content corresponding to the selected user group through the display unit. According to some embodiments, the user interface displayed on the first display device 110 may be a replacement of the user identification information 1202 with the name of the user group in the form shown in FIG. 12. Alternatively, according to some other embodiments, the user interface displayed on the first display device 110 may have a shape as illustrated in FIG. 16. However, it is not limited thereto.

15 is a flowchart illustrating a process of outputting a user interface and playing content by a display device according to another exemplary embodiment. According to some embodiments, the first display device 110 may output a user interface for selecting content without receiving electronic content information from the server 100. According to some embodiments, the user interface displayed on the first display device 110 may be a replacement of the user identification information 1202 with the name of the user group in the form shown in FIG. 12. Alternatively, according to some other embodiments, the user interface displayed on the first display device 110 may have a shape as illustrated in FIG. 16. However, it is not limited thereto.

In step S1510, the first display device 110 may acquire a plurality of user profile information corresponding to the second display devices 120-1 to 120-3. According to some embodiments, the first display device 110 may obtain profile information from the server 100 or the second display devices 120-1 to 120-3.

In step S1520, the first display device 110 may create a user group based on profile information of users. When the number of users having similar profile information is equal to or greater than a predetermined threshold, the first display device 110 may generate a user group based on the similar profile information. For example, among users of the second display devices 120-1 to 120-3, two users who are 30 to 39 years of age, have a hobby of golf or have profile information with a history of watching a golf-related broadcast. If this is the case, the first display device 110 may create a user group called “a golfer in his 30s”.

Thereafter, in step S1530, the first display device 110 may output a user interface for selecting content based on the created group. Here, according to some embodiments, the user interface for selecting content may have a shape as illustrated in FIG. 12.

Thereafter, in step S1540, the first display device 110 may receive a user input (eg, an input using a remote control) through the output user interface. Here, the user input may be selecting at least one of a plurality of user groups included in the user interface. Thereafter, in step S1550, the first display device 110 may play content corresponding to the selected user group.

16 is an exemplary diagram illustrating a user interface output to a display device according to an embodiment corresponding to FIG. 14 or 15.

According to some embodiments, the first display device 110 may display a list 1600 of a plurality of user groups on one side of the display unit. The displayed list of user groups 1600 may be a result of arranging a plurality of user groups based on a value representing a degree of similarity to a profile of a user of the first display device 110.

17 is a conceptual diagram illustrating a method of creating a user group according to an embodiment corresponding to FIG. 14 or 15. 17 illustrates a case in which the first display device 100 and the second display devices 120-1 to 120-3 are TVs, but is not limited thereto.

The server 100 or the first display device 110 includes information 1710 included in the initial system settings of users who are provided with a content providing service through the server 100, the TV viewing history 1720, and the external environment of the TV. A user group 1740 may be created based on the element 1730.

The information 1710 included in the initial system setting is information set in the first display device 110 to the second display devices 120-1 to 120-3, and may mean fixed information about a user. For example, the information 1710 included in the initial system setting may include at least one of the user's age, gender, residential area, and preferred content type.

The TV viewing history 1720 may include a history of contents played by the user using the first display device 110 to the second display devices 120-1 to 120-3. For example, the TV viewing history 1720 may include at least one of a broadcast program the user mainly watches, a time when the user mainly watches content, the user's interests, and On Air friend information indicating whether or not the user is currently connected. have.

The TV external environment element 1730 is information related to an image of a user of the first display device 110 to the second display device 120-1 to 120-3, and means information that dynamically changes over time. I can. For example, the TV external environment element 1730 may include at least one of a user's emotion, a weather in a region in which the user is located, an Internet search word ranking, and a region in which the user is currently located.

According to some embodiments, the server 100 or the first display device 110 may create a user group by grouping similar information based on profile information for a plurality of users.

An embodiment of the present invention may also be implemented in the form of a recording medium including instructions executable by a computer, such as a program module executed by a computer. Computer-readable media may be any available media that can be accessed by a computer, and includes both volatile media such as RAM and nonvolatile media such as ROM, removable and non-removable media. Further, the computer-readable medium may include both computer storage media and communication media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Communication media typically includes computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave, or other transmission mechanism, and includes any information delivery media. For example, the computer storage medium may be implemented as ROM, RAM, flash memory, CD, DVD, magnetic disk or magnetic tape.

The above description of the present invention is for illustrative purposes only, and those of ordinary skill in the art to which the present invention pertains will be able to understand that other specific forms can be easily modified 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 are not limiting. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as being distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the claims to be described later rather than the detailed description, and all changes or modified forms 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.

Claims (21)

A method of controlling the first display device so that the first display device selects content and plays the selected content,
Providing, by the first display device, first user identification information to a server;
Obtaining electronic content guide information including a plurality of second user identification information corresponding to the first user identification information and reproduction content identification information matched with the plurality of second user identification information from the server The step of doing;
Displaying a user interface for selecting a content corresponding to the reproduction content identification information on the first display device based on the electronic content guide information; And
If the content is selected using the user interface, including the step of playing the selected content (the content selected by using the UI),
The user interface includes a plurality of objects,
The object includes identification information of one of the plurality of second users and identification information of reproduction content matched with the identification information of one of the plurality of second users,
The plurality of objects are displayed in the interface according to an order of intimacy values of each of the first user and the plurality of second users,
The order of the intimacy values is determined based on comparing a viewing rate with respect to a time when the content was viewed by each second user by comparing with the total time of the content,
First display device control method.
The method of claim 1,
The user interface,
Includes profile information corresponding to the second user identification information,
Displaying the user interface,
And displaying the profile information based on an order in which the second user identification information is arranged according to an intimacy value between the first user identification information and the second user identification information.
The method of claim 2,
The intimacy value is determined based on a comparison result of at least one of a preferred content type, personal information, and viewing history information corresponding to each of the first user identification information and the second user identification information. 1 How to control the display device.
The method of claim 2,
The first display device control method further includes setting a content sharing mode,
Reproducing the selected content using the user interface,
When a preset input is received, sequentially changing the content played on the first display device based on the sorted order,
The preset input corresponds to a channel change command of the first display device in a state in which the content sharing mode is not set.
The method of claim 1,
The electronic content guide information,
Further comprising viewing history information corresponding to the second user identification information,
The user interface displayed on the first display device,
Including the viewing history information, the first display device control method.
In the method of controlling the server,
Receiving first user identification information from a first display device;
Receiving a plurality of second user identification information and reproduction content identification information of content being played on the plurality of second display devices from a plurality of second display devices;
Calculating an intimacy value between the first user identification information and the plurality of second user identification information;
Generating electronic content guide information arranged based on the intimacy value; And
Including the step of transmitting the electronic content guide information to the first display device,
The electronic content guide information includes the second user identification information and the reproduction content identification information matched with the second user identification information,
The order of the intimacy values is determined based on comparing a viewing rate with respect to a time when the content has been viewed by each second user compared with a total time of the content.
The method of claim 6,
The intimacy value is determined based on a comparison result of at least one of a preferred content type, personal information, and viewing history information corresponding to each of the first user identification information and the second user identification information. Control method.
The method of claim 6,
The electronic content guide information,
Server control method further comprising viewing history information corresponding to the second user identification information.
In the first display device,
A communication unit for transmitting the first user identification information to the server;
Configured to obtain electronic content guide information including a plurality of second user identification information corresponding to the first user identification information and reproduction content identification information matched with the plurality of second user identification information from the server through the communication unit A control unit; And
Based on the electronic content guide information, comprising a display unit for displaying a user interface for selecting a content corresponding to the reproduction content identification information,
The control unit,
Controlling the display unit to play the selected content using the user interface,
The user interface includes a plurality of objects,
The object includes identification information of one of the plurality of second users and identification information of reproduction content matched with the identification information of one of the plurality of second users,
The plurality of objects are displayed in the interface according to an order of intimacy values of each of the first user and the plurality of second users,
The order of the intimacy values is determined based on comparing a viewing rate with respect to a time when the content is viewed by each second user by comparing with a total time of the content.
The method of claim 9,
The user interface,
Includes profile information corresponding to the second user identification information,
The control unit,
The first display device, wherein the display unit controls the display unit to display the profile information based on a sorted order according to an intimacy value between the first user identification information and the second user identification information.
The method of claim 10,
The intimacy value is determined based on a comparison result of at least one of a preferred content type, personal information, and viewing history information corresponding to each of the first user identification information and the second user identification information. 1 display device.
The method of claim 10,
The control unit,
Setting a content sharing mode according to a user input to the first display device, and controlling the display unit to output the user interface according to the content sharing mode being set,
When a preset input is received, the content reproduced on the display unit is sequentially changed based on the sorted order,
The first display device, wherein the preset input corresponds to a channel change command of the first display device in a state in which the content sharing mode is not set.
The method of claim 9,
Further comprising viewing history information corresponding to the second user identification information,
The user interface displayed on the first display device,
The first display device comprising the viewing history information.
On the server,
A communication unit receiving first user identification information from a first display device, a plurality of second user identification information from a plurality of second display devices, and reproduction content identification information of content being played on the plurality of second display devices; And
Comprising a control unit for calculating an intimacy value between the first user identification information and the plurality of second user identification information, and generating electronic content guide information aligned based on the intimacy value,
The communication unit transmits electronic content guide information to the first display device,
The electronic content guide information includes the plurality of second user identification information and the reproduction content identification information matched with the plurality of second user identification information,
The order of the intimacy values is determined based on comparing a viewing rate with respect to a time at which the content has been viewed by each second user compared with a total time of the content.
The method of claim 14,
The intimacy value is determined based on a comparison result of at least one of a preferred content type, personal information, and viewing history information corresponding to each of the first user identification information and the second user identification information. .
The method of claim 14,
The electronic content guide information,
The server further comprising viewing history information corresponding to the second user identification information.
A computer-readable recording medium storing a program for executing the method of claim 1 on a computer.
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