US20110107237A1 - Display processing device, display information distribution device, and display processing method - Google Patents

Display processing device, display information distribution device, and display processing method Download PDF

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Publication number
US20110107237A1
US20110107237A1 US12/897,495 US89749510A US2011107237A1 US 20110107237 A1 US20110107237 A1 US 20110107237A1 US 89749510 A US89749510 A US 89749510A US 2011107237 A1 US2011107237 A1 US 2011107237A1
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United States
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display
items
content
item
information items
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US12/897,495
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Yuji Takao
Mieko Onodera
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Toshiba Corp
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Individual
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Assigned to KABUSHIKI KAISHA TOSHIBA reassignment KABUSHIKI KAISHA TOSHIBA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ONODERA, MIEKO, TAKAO, YUJI
Publication of US20110107237A1 publication Critical patent/US20110107237A1/en
Priority to US14/057,880 priority Critical patent/US9009604B2/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/40—Information retrieval; Database structures therefor; File system structures therefor of multimedia data, e.g. slideshows comprising image and additional audio data
    • G06F16/48—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q30/00—Commerce
    • G06Q30/02—Marketing; Price estimation or determination; Fundraising
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/4508—Management of client data or end-user data
    • H04N21/4532—Management of client data or end-user data involving end-user characteristics, e.g. viewer profile, preferences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4622—Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/466—Learning process for intelligent management, e.g. learning user preferences for recommending movies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/475—End-user interface for inputting end-user data, e.g. personal identification number [PIN], preference data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/482—End-user interface for program selection
    • H04N21/4828—End-user interface for program selection for searching program descriptors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/84—Generation or processing of descriptive data, e.g. content descriptors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications

Definitions

  • Embodiments described herein relate generally to a display processing device, a display information distribution device, and a display processing method which generate a display screen.
  • a user obtains a desired content item on the basis of a keyword such as a title.
  • Jpn. Pat. Appln. KOKAI Publication No. 2009-80580 discloses a video display device which displays visualized content items positioned at intervals varied depending on relevancies in a virtual space, based on similarity between properties of a selected content item as a processing target and properties of other content items than the selected content item.
  • FIG. 1 is an exemplary block diagram representing a configuration of a display processing device according to an embodiment.
  • FIG. 2 is an exemplary view illustrating an example of a metadata item when a TV program is a content item.
  • FIG. 3 is an exemplary screen view illustrating an example of display positions of content-attribute information items.
  • FIG. 4 is an exemplary display screen view for describing display of display information items.
  • FIG. 5 is an exemplary display screen view illustrating an example of display positions of user-created information items.
  • FIG. 6 is an exemplary flowchart which describes details of a display operation for display information items.
  • FIG. 7 is an exemplary display screen illustrating another display example of content display information items.
  • FIG. 8 is an exemplary display screen illustrating another display example of content display information items.
  • FIG. 9 is an exemplary display screen illustrating another display example of content display information items.
  • FIG. 10 is an exemplary display screen illustrating another display example of content display information items.
  • a display processing apparatus includes an operation receiver, an obtaining module, a relevance calculator, a display information generator, and a display controller.
  • the operation receiver is configured to receive a selection operation for selecting a key content item to become a search key.
  • the obtaining module is configured to obtain particular information items allowed to be created by users, the particular information being obtained for each of the key content item and other content items.
  • the relevance calculator is configured to calculate one or more relevances between the key content item and each of the other content items, based on the particular information items.
  • the display information generator is configured to generate display information items expressing the key content item and the other content items, based on the particular information items or content-attribute information items peculiar to the key content item and the other content items.
  • the display controller is configured to control to display a list information item in which the display information items are located at predetermined positions, based on the relevances.
  • the embodiment below cites an example of applying the display processing device to a television set (TV).
  • the invention is not limited to the embodiment but is applicable to any display device insofar as the display device can display videos.
  • the display processing device displays the plural content items relevant to the selected key content item, together with the selected content item.
  • FIG. 1 is a block diagram representing a configuration of the display device 100 according to the embodiment.
  • the display processing device comprises a display 170 , a broadcast receiver 108 , a video reproduction module 107 , and an internet-protocol-television (IPTV) connection module 180 , and is connected to an IPTV server 200 through a network.
  • the display processing device 100 also comprises a processor, such as an application-specific integrated circuit (ASIC) or a central processing unit (CPU), and storage devices such as a read only memory (ROM) and a random access memory (RAM).
  • ASIC application-specific integrated circuit
  • CPU central processing unit
  • storage devices such as a read only memory (ROM) and a random access memory (RAM).
  • ROM read only memory
  • RAM random access memory
  • the read only memory (ROM) stores a predetermined program to control operations of the display processing device 100
  • the random access memory (RAM) serves as a work area for the processing device (though neither ROM nor RAM is represented in the figure).
  • the processing device and programs in the storage devices cooperate together to constitute functional parts, such as an electronic program guide storage module 150 , a recorded program storage module 160 , a remote control receiver 101 , a metadata search module 102 , a metadata obtaining module 103 , a relevance calculator 104 , a display information generator 105 , a display controller 106 , and the video reproduction module 107 .
  • the IPTV server 200 is a server which distributes videos such as TV programs and cinemas by using the IP. Upon a request from the display processing device 100 , the IPTV server 200 distributes a content item of a corresponding video, and a metadata of the content item.
  • the IPTV connection module 180 is an interface which connects the display processing device 100 to the IPTV server 200 .
  • the electronic program guide storage module 150 is a storage medium, such as a hard disk drive (HDD) or a memory, to store electronic program guides obtained from an external server which manages/distributes electronic program guides (EPGs). Specifically, the electronic program guide storage module 150 obtains electronic program guides for television (TV), cable television (CATV), communication satellite (CS) broadcast, etc., from server devices of service providers connected to a network, such as the Internet. The electronic program guide storage module 150 stores obtained electronic program guides.
  • the electronic program guides contain information concerning programs to be broadcasted from now up to a time point in the future (for example, one week from now).
  • the recorded program storage module 160 is a storage medium, such as a HDD or a memory, which stores content items such as videos.
  • a storage medium such as a HDD or a memory
  • the recorded program storage module 160 stores, as content items, videos of recorded TV programs. Videos from digital versatile disks (DVDs) and videos captured by video cameras may be content items.
  • DVDs digital versatile disks
  • the recorded program storage module 160 stores metadata items, which concern content items, respectively associated with the content items.
  • the “metadata item” means a group of information items indicating properties peculiar to a content item, and contains a title of the content item named by a creator of the content item, and broadcast date/time, etc.
  • a metadata item thereof is information including a title of the TV program, a channel, broadcast date/time, casts, content of the program, genre information (program information), and/or a representative image.
  • the metadata item is supplied together with the content item and stored into the recorded program storage module 160 .
  • the display 170 is a liquid crystal display (LCD) which displays text and images, and displays content items such as received TV programs, stored content items, electronic program guides, etc.
  • the display 170 also displays display information items respectively representing substances of content items generated by a display information generator 105 which will be described later.
  • the broadcast receiver 108 receives video content items (TV programs) broadcasted by TV broadcast through an antenna or cable (not illustrated).
  • the video reproduction module 107 obtains a video content item which a user wishes to play back, i.e., a content item such as a TV program received by the broadcast receiver 108 , a video content item obtained by the IPTV server 200 through the IPTV connection module 180 , or a video content item stored in the recorded program storage module 160 .
  • the video reproduction module 107 decodes (plays back) the obtained content item and outputs the obtained content item to the display controller 106 .
  • the video reproduction module 107 also outputs electronic program guides stored in the electronic program guide storage module 150 to the display controller 106 .
  • the display controller 106 plays back and displays content items and electronic program guides which are output from the video reproduction module 107 , on the display 170 .
  • the remote control receiver 101 recognizes a press on an operation button by a user, the button being provided on the remote controller 90 , and accepts the operation. For example, if a user searches for a particular content item from plural content items and further searches for a content item relevant to the particular content item, the user selects, by an operation button provided on the remote controller 90 , a content item (key content item) as a center (key) for the search among plural content items displayed on an electronic program guide displayed on the display 170 . Then, the remote control receiver 101 accepts the operation of selecting the key content item, i.e., an operation to search for a content item. Alternatively, a content key item being played back may be dealt with as a key content item.
  • the remote control receiver 101 accepts the operation of dealing with the content item being played back, as a key content item, i.e., an operation to search a content item.
  • the display processing device 100 is connected to a user-created information management server 201 .
  • the user-creation information management server 201 stores information items created by an unspecified number of users (referred to as user-created information items).
  • the user-created information is grapevine information such as an impression, an opinion, or a question about a content item.
  • the user-created information item includes all text data about a content item that have been written into web pages on the Internet.
  • the user-created information management server 201 is not comprised in the display processing device 100 .
  • the display processing device 100 comprises a user-created information storage module 190 and a user-created information obtaining module 191 .
  • the user-created information obtaining module 191 obtains user-created information items from the user-created information management server 201 .
  • the user-created information storage module 190 stores user-created information items obtained by the user-created information obtaining module 191 .
  • the metadata obtaining module 103 obtains metadata items of all obtainable content items (i.e., a key content item and all other content items than the key content item).
  • the obtainable content items are, for example, content items stored in the recorded program storage module 160 , and content items which are to be obtained by the broadcast receiver 108 and the IPTV connection module 180 after the current time.
  • the obtainable content items may be content items which can be obtained by the display processing device 100 .
  • the metadata obtaining module 103 obtains and manages metadata items of content items from the recorded program storage module 160 .
  • the metadata obtaining module 103 also requests metadata items of content items from the IPTV server 200 , and obtains and manages the metadata items. Further, the metadata obtaining module 103 also obtains and manages metadata items of content items from electronic program guides stored in the electronic program guide storage module 150 . Further, the metadata obtaining module 103 obtains user-created information items about content items stored in the user-created information storage module 190 , and manages the user-created information items as metadata items.
  • the metadata search module 102 searches for a metadata item of the key content item from metadata items of content items obtained by the metadata obtaining module 103 , and sends the searched metadata item of the key content item to the relevance calculator 104 . Further, the metadata search module 102 searches for metadata items of other content items, as targets for which relevances to the obtained metadata item are to be calculated, from the metadata item of the key content item which has been obtained by the metadata obtaining module 103 . The metadata search module 102 then sends the searched metadata items of the other content items to the relevance calculator 104 .
  • the metadata search module 102 accepts a selection operation for a key content item by the remote control receiver 101 , the metadata search module 102 sends metadata items of all content items obtained by the metadata obtaining module 103 to the display information generator 105 .
  • the relevance calculator 104 calculates relevances of other content items to the key content item, based on metadata items of the selected key content item and other content items, which have been sent from the metadata search module 102 . Specifically, a relevance RM is calculated by using the equation (1) given below. Each time when a key content item is selected, the relevance calculator 104 calculates relevances of the other content items to the key content item.
  • N is a total number of metadata items obtainable by the metadata obtaining module 103 .
  • “(n)” of a metadata item M 11 ( n ) corresponding to the key content item and a metadata item M 21 ( n ) corresponding to any other content item indicates that the metadata item is the n-th one of metadata items obtained by the metadata obtaining module 103 .
  • “fa n (M 11 ( n ),M 21 ( n ))” is a function which returns, as RM n , relevance of the metadata item M 21 ( n ) to the metadata item M 11 ( n ).
  • the relevance RM of another content item to the key content item can be expressed as a linear sum of five relevances RM 1 to RM 5 as cited below.
  • RM 1 fa 1 (recorded date/time of metadata item M 11 , recorded date/time of metadata item M 21 )
  • RM 2 fa 2 (title of metadata item M 11 , title of metadata item M 21 )
  • RM 3 fa 3 (channel of metadata item M 11 , channel of metadata item M 21 )
  • RM 4 fa 4 (genre of metadata item M 11 , genre of metadata item M 21 )
  • RM 5 fa 5 (cast list of metadata item M 11 , cast list of metadata item M 21 )
  • can be used.
  • rec_data(x) is a function of uniquely converting recorded date/time of x into an integer, and converting recorded date/time into seconds elapsed from certain reference date/time, supposing that the certain reference date/time is 0.
  • MO 1 is an arbitrary constant
  • is a function of expressing the size of X, which is typically an absolute value.
  • the embodiment is not limited to this example.
  • ⁇ x ⁇ is a square root of a sum of squares of differences between elements which constitute x.
  • g(x) may use a sigmoid function or a gamma function.
  • the embodiment is not limited to this example. Inversely, the embodiment may be configured to take a smaller value as the metadata items M 11 and M 21 are closer to each other.
  • a function g which takes a greater value under a particular condition may be used.
  • fa 2 is realized by a function which takes a greater value as a number of common characters included in text strings of titles of the metadata items M 11 and N 121 increases.
  • the metadata items M 11 and M 21 respectively contain titles “A B C D E” and “F G C D H”, two characters “C D” are included in common in both titles.
  • “ABCDE” and “F G H I E” are titles, one character is included in common in both titles, and therefore, the former title results in a greater value than the latter title.
  • a relevance is determined by a keyword included in content of a program, the relevance can be calculated in the same manner as in the case of titles.
  • the embodiment is not limited to this example. For example, a greater value may be taken as the number of common characters from the top increases.
  • a condition may be added to regard metadata items, which include similar concepts, to be common to each other even if common characters are not included. As an example of the latter case, “Yakyu(which means baseball in Japanese)” may be regarded to be similar to “baseball”. If these words are respectively included in metadata items, the metadata items are considered to include a common text string.
  • Metadata items of content items include a common main text string to each other and also include respectively different subsidiary text strings, the content items often belong to one common series.
  • fa 2 can take a much greater value.
  • “A B C D E # 2 ” and “A B C D E # 3 ” can be regarded to be different chapters in one common series of drama content items.
  • the value of fa 2 may be doubled.
  • fa 3 is a function which takes a greater value if the metadata items M 11 and M 21 indicate the same channel as each other.
  • fa 3 can be realized as a function which takes a value of MO 2 in case of the same channel, or otherwise takes a value of 0.
  • MO 2 is an arbitrary constant.
  • the function may take any other value in case of the same channel in the same series. For example, in case of owned and operated stations, the function may return a value of MO 2 / 2 .
  • the function may return MO 2 / 4 .
  • Configurations described above cite mere examples, and arbitrary functions can be used.
  • fa 4 is a function which takes a greater value if the metadata items M 11 and M 21 indicate the same genre as each other.
  • the function takes a value of MO 3 if both M 11 and M 21 indicate a genre “sport”, or otherwise takes a value of 0.
  • M 21 indicates a sub-genre which belongs to a genre indicated by M 11 , e.g., if M 11 and M 21 respectively indicate genres “sport” and “baseball”, the function may take a value of MO 3 / 2 .
  • M 11 and M 21 do not directly indicate the same genre as each other and if M 11 and M 21 belong to the same parent genre, e.g., if M 11 and M 21 respectively indicate genres “baseball” and “soccer”, both of M 11 and M 21 belong to the same genre “sport” as each other, and therefore, the function may take MO 3 / 4 .
  • Configurations described above cite mere examples, and arbitrary functions can be used.
  • fa 5 is similar to fa 4 .
  • fa 5 may be a function which takes 2 ⁇ MO 2 (where MO 4 is an arbitrary constant) if metadata items M 11 and M 21 respectively include cast lists “WW, XX, YY” and “XX, YY, ZZ” which include two common casts. Otherwise, if no common cast is included, the function takes 0. Further, casts may include groups.
  • M 11 indicates appearance of the group XX, i.e., appearance of KK as a member of the group XX
  • M 21 indicates no appearance of the group XX but appearance of KK as a member of the group XX.
  • the function may return MO 4 / 2 .
  • a relationship concerning groups to appear and casts may be specified, e.g., if groups XX and YY belong to the same office, the function may be enhanced to return MO 4 / 4 .
  • a relationship between a group and casts or a relationship between casts and an office to which a group belongs may be configured to be defined in a metadata item or to be obtained from an external server (information site).
  • the above description cites examples in which relevances about casts listed on the cast list are not distinguished from each other. However, the embodiment is not limited to these examples.
  • the embodiment may be further configured to perform weighting in accordance with an order of casts listed in the cast list. For example, if comparison is made with a cast listed first in the metadata item M 11 , a calculated relevance is maintained unchanged. For a cast listed second, a calculated relevance is weighted by 1 ⁇ 2. For a cast listed third, a calculated relevance is weighted by 1 ⁇ 3. Thus, weights may be varied in accordance with the order of casts listed in the metadata item M 11 .
  • weights for relevances for casts may be varied by using information concerning a main cast. For example, a calculated relevance may be weighted to be doubled for a main cast.
  • the display information generator 105 generates display information items expressing content of a key content item and other content items, from meta data items of the key content item and the other key content items, which have been sent from the metadata search module 102 . Specifically, for example, based on a metadata item of a video data item whose content item is stored in the recorded program storage module 160 , the display information generator 105 generates a display information item which makes a representative image displayable on the display 170 , with a title added to the representative image.
  • the display information generator 105 based on a metadata item of a video data item whose content item is obtained from the IPTV server 200 , the display information generator 105 generates a display information item which makes a representative image displayable on the display 170 , with a title added to the representative image. Also alternatively, for example, based on an electronic program guide stored in the electronic program guide storage module 150 , the display information generator 105 generates a display information item which makes a title of TV program, broadcast date/time, a channel, and content of the program displayable on the display 170 . A display information item based on a metadata item specific to a content item is referred to as a content-attribute information item. Further, based on a user-created information item as a metadata item obtained from the user-created information management server 201 , the display information generator 105 generates a display information item which makes impressions about the content item displayable on the display 170 .
  • FIG. 2 illustrates an example of a content display information item representing content of a content item.
  • FIG. 2 illustrates, for example, a key content-attribute information item C 1 generated on the basis of a video data item stored in the recorded program storage module 160 .
  • the key content-attribute information item C 1 is to show a representative image of content item thereof at C 1 - 1 as well as a title “358 ⁇ *6” of the content item (video) thereof at C 1 - 2 .
  • the display controller 106 accepts an operation of searching for a content item from a user, the display controller 106 performs a control of displaying a list information item (a similar content list) on the display 170 , where the list information item lists and displays a key content display information item and other content display information items relevant to the key content item, on the display 170 .
  • FIG. 3 is a display screen view for describing display positions of content display information items. Described here is an example which uses the content-attribute information item illustrated in FIG. 2 with respect to content display information items in a similar content list. For example, a user selects a content item (key content item) to become a center (key) for a search, from plural content items displayed in the electronic program guide 300 displayed on the display 170 , by using an operation button provided on the remote controller 90 . Then, the remote control receiver 101 accepts an operation of searching for a content item.
  • a content item key content item
  • the remote control receiver 101 accepts an operation of searching for a content item.
  • the user selects display of a similar content list in which content-attribute information items are arranged, by an operation button provided on the remote controller 90 . Then, the display 170 displays a similar content list listing and displaying a key content-attribute information item and other content-attribute information items relevant to the key content item.
  • the key content-attribute information item is located at a particular position, and the other content-attribute information items are located at positions on edges or vertices of plural polygons formed coaxially about a center which is the position of the key content-attribute information item.
  • the other content-attribute information items are located in a layout depending on operational directions of an operation button provided on the remote controller 90 , such as a cross key.
  • the other content-attribute information items are located, in an order from the highest relevance, from vicinity of the center within predetermined regions divided respectively for attributes in radial directions from the center.
  • the similar content list displays the key content-attribute information item at a maximum size, and displays the other content-attribute information items, sizes of which decrease with increase in distance from the vicinity of the center.
  • the display controller 106 locates the key content-attribute information item C 1 at a particular position, and sets four axes (axes 1 to 4 ), i.e., positive and negative X-axis directions, and positive and negative Y-axis directions about the key content-attribute information item C 1 as a center.
  • the display controller 106 assigns, to the axes, attributes included in the metadata item of the selected key content item.
  • “title” of a TV program (content item), “person” indicating casts, “keyword” for performing a search included in content of the program, and “genre” of the TV program are allotted to the attributes included in each metadata item.
  • the attributes assigned to the axes can be used as indices when the user searches for other content items relevant to a key content item.
  • Other attributes may be creation time of a content item and a provider thereof.
  • Layout directions of the axes may be switched by a selection operation of a user.
  • a menu for selecting a layout of axes may be provided on the remote controller 90 .
  • the user is allowed to reassign the “person” axis which is assigned to the negative Y-direction on the menu screen.
  • a menu for selecting a layout position of an attribute which the user is going to display as an axis is displayed on the display 170 by the display controller 106 .
  • a layout position of an axis is selected from the selection menu.
  • a change to the layout position of the axis is made by a button also provided on the remote controller 90 . In this manner, the user can freely relocate axial directions to positions where the user can easily see the axial directions.
  • the display controller 106 generates predetermined regions (regions 1 to 4 ) respectively including the axes, by dividing a region in radial directions from the key content-attribute information item C 1 as the center, by arbitrary angles which respectively include the axes representing attributes.
  • the arbitrary angles each are 90 degrees including one axis.
  • the predetermined regions (regions 1 to 4 ) including the plural axes (axes 1 to 4 ) are presentation ranges indicating display information items located in association with the corresponding ones of the plural attributes relating to calculation of relevances.
  • the display controller 106 may display the plural axes together with the plural attributes when displaying the similar content list on the display 170 .
  • the display controller 106 locates other content display information items in the order from the highest relevance to the key content item toward outside from vicinity of the center where the key content-attribute information item C 1 is located.
  • the display controller 106 thus generates the similar content list in which the key content-attribute information item C 1 and the other content-attribute information items are located, and displays the generated similar content list on the display 170 .
  • the display controller 106 prestores located positions and display sizes of the key content-attribute information item and the other content-attribute information items. After calculating relevances to the key content item, the display controller 106 orderly locates the other content-attribute information items in a predetermined display size.
  • the other content-attribute information items are arranged outwardly from the vicinity of the center where the key content-attribute information item C 1 is located, to be associated with attributes “title”, “person”, “keyword”, and “genre” respectively in the upper, right, lower, and left sides.
  • the similar content list is displayed in which other content-attribute information items are located at positions on edges or vertices of plural polygons formed coaxially about a center which is the position of a key content-attribute information item, in a layout depending on operational directions of the operation button provided on the remote controller 90 , in an order of the highest relevance from the vicinity of the center.
  • the user can easily search for content items relevant to a key content item from among a huge number of content items by an operation through the remote controller 90 .
  • the display controller 106 comprises a scroll module 109 and has functions as follows. If an operation button on the remote controller 90 is pressed and the remote control receiver 101 accepts a specify operation for specifying a target content-attribute information item of a targeted content item, the scroll module 109 moves the similar content list in the direction of the specify operation within a predetermined display range. At this time, the display controller 106 maintains the key content-attribute information item displayed within the display range, regardless of a distance by which the similar content list is scrolled to move by the scroll module 109 .
  • the display controller 106 displays one other content-attribute information item which has become a target content item specified by operating the operation button, in a manner that the display size of the one other content-attribute information item is larger than that of the remaining other content-attribute information items which are not specified.
  • FIG. 5 illustrates display positions when user-created information items are displayed as content display information items. Calculation of relevances of other content items to a key content item and display of content display information items in the similar content list are the same as described above.
  • the display 170 displays the similar content list which lists up a user-created information item of a key content item and user-created information items of other content items relevant to the key content item.
  • the display 170 need not change attributes of the axes when user-created information items are displayed as content display information items, as illustrated in FIG. 5 . That is, the display 170 sets “person” for the positive X-direction, “genre” for the negative X-direction, “title” for the positive Y-direction, and “keyword” for the negative Y-direction. Like when content items are displayed at positions depending on their own relevances on the axes, the display 170 displays user-created information items corresponding to content items, at display positions of the content items, respectively.
  • FIG. 5 illustrates a display example of user-created information items when the user selects a particular drama as a key content item.
  • the display 170 displays, at the center, a user-created information item corresponding to the key content item.
  • An impression about the particular drama, which has been created by a user, is displayed in a display region of the key content item.
  • User-created information items of the other content items are displayed in corresponding display regions of the other content items, arranged in an order from the highest relevance along axes of “person”, “title”, “genre”, and “keyword”.
  • the display regions for user-created information items of the key content item and the other content items are display positions of the content display information items illustrated in FIG. 3 , and are the same as the display regions thereof.
  • the display processing device 100 is provided with at least two display modes for the similar content list, i.e., a mode of displaying content-attribute information items as content display information items and a mode of displaying user-created information items as content display information items.
  • the display controller 106 may display the similar content list by switching the modes in accordance with selection made by the user or may switch the modes each time a constant time period elapses.
  • the display 170 can display the list, switching the two modes, and can therefore improve convenience for the user.
  • FIG. 6 is a flowchart representing a flow of the display processing for content display information items by the display processing device 100 .
  • the remote control receiver 101 waits for acceptance of a selection operation for a key content item from an operation button on the remote controller 90 (Block 101 ). If a selection operation is accepted (Block 101 , YES), the metadata obtaining module 103 obtains metadata items of the key content item and other content items, and the display information generator 105 generates content-attribute information items and user-created information items (Block 102 ).
  • the relevance calculator 104 calculates relevances of the other content items to the key content item, based on the metadata items. Further, based on the relevances calculated by the relevance calculator 104 , the display controller 106 calculates display positions of the key content item and the other content items (Block 103 ).
  • the display controller 106 determines whether the mode of displaying user-created information items as content display information items is selected by the user or not (Block 104 ). If the mode of displaying user-created information items is selected (Block 104 , YES), the display controller 106 creates a similar content list on the basis of user-created information items (Block 105 ). Then, the display controller 106 displays the user-created information items at specified display positions, as illustrated in FIG. 5 (Block 106 ).
  • the display controller 106 creates a similar content list on the basis of content-attribute information items (Block 107 ). Then, the display controller 106 displays content-attribute information items respectively at specified display positions, as illustrated in FIG. 3 (Block 106 ).
  • FIG. 7 illustrates another display example of content display information items.
  • FIG. 7 is a display screen view illustrating a state that a user selects, by an operation button, an arbitrary content item on the remote controller 90 , on the display screen of the similar content list in which content-attribute information items are located, as illustrated in FIG. 3 .
  • the user moves a cursor rightwards, i.e., in a direction in which a relevance of “person” to the key content item and decreases, by the operation button on the remote controller 90 .
  • the cursor is positioned at a content-attribute information item C 35 .
  • the display controller 106 displays a user-created information item corresponding only to the content-attribute information item C 35 where the cursor is positioned.
  • the display controller 106 displays the user-created information item overlapped over the similar content list in a manner that the user-created information item, for example, balloons up from the display position of the content-attribute information item C 35 .
  • the display controller 106 does not display any user-created information item for the other content-attribute information items than the content-attribute information item C 35 .
  • the display controller 106 may display an enlarged content-attribute information item added with more detailed information than the content-attribute information item displayed on the similar content list, in response to an operation on the remote controller 90 by the user.
  • the more detailed information may include, for example, a title and/or content of a program obtained from an electronic program guide.
  • excess of information does not occur beyond the display screen of the display 170 .
  • the user can visually check a user-created information item or a detailed content-attribute information item with respect to only a selected content item. Therefore, the user can easily select a particular content item from among plural content items.
  • FIG. 8 illustrates another display example of content display information items.
  • FIG. 8 is a display screen view of user-created information items which are displayed when a user selects, by an operation button on the remote controller 90 , an arbitrary content item on the display screen of the similar content list in which content-attribute information items are located, as illustrated in FIG. 3 .
  • the user selects a content display information item C 35 of a program 1 .
  • the display controller 106 displays all user-created information items corresponding to the content-attribute information item C 35 of the program 1 over the whole screen of the display 170 .
  • the display controller 106 may display the user-created information items either in descending order of dates or prioritizing user-created information items including a keyword used as a source of relevance calculation.
  • the user may select a particular user-created information item from a user-created information list by using the remote controller 90 . If the display 170 cannot display all user-created information items corresponding to the content-attribute information item C 35 of the program 1 within one screen, the display controller 106 scrolls and displays the user-created information list in response to an operation on the remote controller 90 by the user.
  • the keyword as a source of relevance calculation is, for example, a personal name (such as Ms. A in the example of FIG. 8 ) which is included in common in both metadata items of the key content-attribute information item C 1 and the content-attribute information item C 35 of the program 1 . If the personal name (Ms. A) is a source of relevance calculation, the display controller 106 displays user-created information items in a manner that user-created information items including the personal name (Ms. A) are prioritized more highly. The display controller 106 may display the personal name (Ms. A) highlighted in user-created information items.
  • the user can obtain plural user-created information items about a selected content item. Since the user can understand comments about the selected content item at a glance, the user can easily select a particular content item from the plural content items.
  • FIG. 9 illustrates another display example of content display information items.
  • FIG. 9 is a display screen view of user-created information items which are displayed when the user selects, by an operation button on the remote controller 90 , an arbitrary content item on the display screen of the similar content list in which content-attribute information items are located, as illustrated in FIG. 3 .
  • the user selects a content display information item C 35 of a program 1 .
  • the display controller 106 displays only user-created information items which include a keyword as a source of relevance calculation, as has been described above.
  • the display controller 106 displays the user-created information items overlapped over the display screen in a manner that the user-created information items, for example, balloon up from the display position of the content-attribute information item C 35 .
  • a display region of user-created information items is smaller compared with the entire display screen of the display 170 .
  • the display region for displaying user-created information items can be avoided from increasing. Further, since only material user-created information items are displayed, excess of information does not occur but the user can obtain material user-created information items.
  • the display controller 106 may display user-created information items including a keywork as a source of relevance calculation, so as to be prioritized more than user-created information items including no keyword.
  • prioritized display is to display user-created information items including a keyword, prioritized more highly than user-created information items including no keyword, or to display a keyword in user-created information items including the keyword.
  • FIG. 10 illustrates another display example of content display information items.
  • FIG. 10 is a display screen view of user-created information items which are displayed when the user selects, by an operation button an arbitrary content item on the remote controller 90 , as illustrated in FIG. 3 .
  • the user selects a content display information item C 35 of a program 1 .
  • the display controller 106 displays user-created information items corresponding only to a content-attribute information item C 35 where a cursor is positioned.
  • the display controller 106 displays a similar content list and a user-created information list independently from each other, respectively in a display region for the similar content list in which content-attribute information items are located and in a display region for the user-created information list corresponding to the content-attribute information item C 35 .
  • the display controller 106 may display the display region for the user-created information list corresponding to the content-attribute information item C 35 , overlappted on a part of the display region for the similar content list displayed on the display screen of the display 170 .
  • the display controller 106 displays the user-created information list in the right side of the display screen of the display 170 .
  • excess of information does not occur beyond the display screen of the display 170 .
  • the similar content list about a key content-attribute information item as a center, and the user-created information list are displayed independently from each other.
  • Information items can be displayed put in order. The user can easily obtain an information item from the user-created information list, and therefore can easily select a particular content item from plural content items.
  • a similar content list is displayed in which other content-attribute information items are arranged from a position of a key content-attribute information item, in an order from the highest relevance.
  • a group of content items having different relevances to the key content item with respect to each of different indices (attributes) are displayed at once.
  • display is performed in a manner that differences in relevance to the key content item are understood from relevance attribute information items (wherein differences in relevance are, for example, a person-related group which is calculated by an index of relevance indicating the same cast, and a title-related group which is calculated by an index of relevance indicating similar titles). Therefore, the user can see differences between indices of relevances, with the differences divided into groups.
  • a mechanism can be constructed with an ability to easily search for content items relevant to a key content item searched for from various diversified content items.
  • the embodiment principally has features as follows.
  • the first feature is that a user can obtain a corresponding user-created information item, based on an arbitrary content item.
  • the second feature is that a user can obtain user-created information items relevant to a user-created information item by using relenatures between displayed content items.
  • the third feature is that a user can obtain a corresponding content item, based on a user-created information item.
  • the first feature described above allows a user to know what impression another user has about an arbitrary content item.
  • the second feature described above allows a user to obtain information searched for and worthful information as the user-created information items are arranged and displayed corresponding to relevances to the key content item. For example, when a user wishes to know what impression another user has about a certain cast, the user need only see user-created information items along the axis of “person” from a key content item. The user can easily find relevant content items with respect to relevances based on user-created information items. That is, the user can know as much information as possible about a particular cast.
  • the third feature allows a user to obtain a corresponding content item, based on an interested user-created information item. Through user-created information items, the user can find content items which otherwise could have not been found only through relevances between content items.
  • the processing executed by the display processing device 100 may be realized and provided as a program in form of a file in an installable or executable format, with the program recorded on a computer-readable recording medium, such as CD-ROM, a flexible disk (FD), CD-R, or DVD.
  • a computer-readable recording medium such as CD-ROM, a flexible disk (FD), CD-R, or DVD.
  • the program executed by the display processing device 100 according to the embodiment may be configured to be stored in a computer connected to a network such as the Internet, and provided by downloading through the network.
  • the program executed by the display processing device 100 according to the embodiment may be provided or distributed through a network such as the Internet.
  • the embodiment is applicable to the display processing device 100 even if at least the display 170 is removed from the display processing device 100 . Further, the embodiment is also applicable to the display processing device 100 which functions as a server (a display information distribution device). That is, the display processing device 100 which functions as a server outputs information of a display screen of a similar content list constituted by content display information items and/or user-created information items.
  • the remote control receiver 101 functions as a module which accepts a selection operation for selecting a key content item by the user, from a terminal connected through the network.
  • the display controller 106 functions also as a distribution module which distributes information of a display screen to a terminal connected through the network.
  • the various modules of the systems described herein can be implemented as software applications, hardware and/or software modules, or components on one or more computers, such as servers. While the various modules are illustrated separately, they may share some or all of the same underlying logic or code.

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