JP5371870B2 - Content search system - Google Patents

Description

  The present invention relates to a content search system that searches for content based on keywords.

  Conventionally, a technique for efficiently providing content information that meets user preferences has been disclosed. In Patent Document 1, based on each keyword related to content used by a plurality of users, the relevance between keywords is extracted at a predetermined time, and the keyword to be expanded is determined from the relevance of the extracted keyword. Thus, a search system that dynamically adds or replaces an appropriate keyword according to the actual usage of the user is disclosed.

JP 2005-310094 A

  However, conventionally, keywords for Internet video are assigned by a contributor, while keywords for digital broadcasting are assigned by a business operator. Therefore, when searching across a plurality of services, there is a problem that a program cannot be searched from a digital broadcast or the like if the keyword of the Internet video is English, Roman characters, or a non-major word.

  The present invention has been made in order to solve the above-described problems, and even in different services such as a program and an Internet video, the contents of both services can be searched evenly by associating keywords. The purpose is to provide a search system.

  A content search system according to the present invention includes an input unit that receives a program display instruction, a search instruction, and a selection instruction input by a user, extracts a keyword of a viewing program, displays a program guide based on the program display instruction, When a selection instruction is input from the input unit to the display of the program, operation information based on the program metadata and the selection instruction is output. When a search instruction is input from the input unit to the display of the program guide, a keyword list is displayed. , Receiving a selection instruction from the input unit, outputting a selected keyword, and outputting a first search instruction based on the selected keyword input from the program data management unit, Based on the first search result input by the data management unit and the external server performing a search based on the first search command, the keyword of the Internet video is selected. And a list of the first search results is displayed to accept selection instructions and search instructions from the input unit. When a selection instruction is input, an operation based on the metadata of the program or Internet video and the selection instruction When information is output and a search instruction is input, a list of keywords based on the search instruction is displayed, a selection instruction from the input unit is received, and a second search instruction based on the selected keyword is output, The program data management unit and the external server perform a search based on the second search command and perform a search to display a list of second search results to be input, and a preference score for storing a preference score for keywords of programs and Internet videos The preference score of the keyword of the program and Internet video input from the storage unit, the program data management unit and the cross search unit Preference score update unit that updates the preference score stored in the preference score storage unit based on the operation information input from the program data management unit and the cross-sectional search unit, and the keywords of the program and the Internet video, acquired from the storage unit The correlation score storage unit for storing the correlation score between the keywords of the program and the Internet video, and the correlation score storage unit. A correlation keyword inquiry unit that obtains high keywords, a correlation score update unit that adds a certain correlation score between keywords of programs and Internet videos input from the cross search unit, a program data management unit, and a cross search unit Program selection based on program metadata and operation information And a program channel selection recording unit that performs recording, and an Internet moving image reproduction unit that reproduces an Internet moving image based on metadata and operation information of the Internet moving image input from the cross search unit.

  According to the present invention, the program data management unit extracts the keywords of the viewing program, and when a search instruction is input from the input unit to display the program guide, the keyword list is displayed and a selection instruction from the input unit is displayed. Accept and output the selected keyword, the cross-sectional search unit outputs a first search command based on the selected keyword input from the program data management unit, and the program data management unit and the external server receive the first search command Based on the first search result that is entered by performing a search based on the search, the keyword of the Internet video is extracted, a list of the first search result is displayed, and a selection instruction and a search instruction from the input unit are received, and the search instruction Is entered, a list of keywords based on the search instruction is displayed, a selection instruction from the input unit is accepted, and a second search based on the selected keyword is received. Since the command is output and the program data management unit and the external server search based on the second search command and are configured to display a list of the second search results to be input, the program and the Internet video are displayed. Even in different services, more search results can be acquired, and the user's preference is more reflected in the search.

It is a block diagram which shows the structure of the content search system by Embodiment 1 of this invention. It is a flowchart which shows operation | movement of the program data management part of the content search system by Embodiment 1 of this invention. It is a flowchart which shows operation | movement of the crossing search part of the content search system by Embodiment 1 of this invention. It is explanatory drawing which shows the process of the preference score update part of the content search system by Embodiment 1 of this invention. It is explanatory drawing which shows the process of the correlation score update part of the content search system by Embodiment 1 of this invention.

Embodiment 1 FIG.
FIG. 1 is a block diagram showing the configuration of a content search system according to Embodiment 1 of the present invention.
The content search system 100 is mounted on, for example, a digital broadcast receiver and is connected to the Internet 200 via a communication line.
In addition, the content search system 100 includes an input unit 1, a program data management unit 2, a cross-sectional search unit 3, a preference score inquiry unit 4, a preference score update unit 5, a preference score storage unit 6, a correlation keyword inquiry unit 7, and a correlation score update. 8, a correlation score storage unit 9, a program channel selection / recording unit 10, and an Internet video reproduction unit 11.

  The input unit 1 is composed of, for example, a remote controller having a program guide button, a search button, and a selection button, and outputs an operation signal based on the operation content by the user. The operation signal is, for example, a signal indicating a program guide display instruction, a search instruction, a selection decision, and the like. The input unit 1 only needs to be configured to input at least a program guide display instruction, a search instruction, and a selection decision, and may be configured with a button provided in the digital broadcast receiver main body or the like.

Next, details of the program data management unit 2 will be described.
The program data management unit 2 extracts keywords by performing morphological analysis on metadata previously assigned to each program, and based on the metadata assigned to each program in accordance with a program guide display instruction input from the input unit 1 Display the program guide.
Further, the program selection / recording operation information and the program keyword are input to the preference score update unit 5 according to the selection decision input from the input unit 1 for the focused program in the program guide, and the program selection / The request for recording and the metadata of the program are output to the program tuning / recording unit 10. Similarly, a keyword list in which the preference score of each keyword is acquired from the preference score inquiry unit 4 in accordance with the search instruction input from the input unit 1 for the focused program in the program table, and arranged in descending order of the preference score. Is displayed.
Further, in the keyword list, the keyword selected by the user is output to the cross search unit 3 in accordance with the selection decision and search instruction input from the input unit 1, and the keyword selected by the user and operation information (here, "search"). Is output to the preference score update unit 5.
Further, the program data is searched based on the search command input from the cross search unit 3, and the search result is output to the cross search unit 3.

Next, the details of the cross search unit 3 will be described.
The cross search unit 3 generates a search command based on the keyword input from the program data management unit 2, transmits it to a search server (not shown) for each distribution service via the Internet 200, and the program data management unit 2. Output the search results, receive the search results, and display a list of search results.
Further, morphological analysis is performed on metadata previously assigned to the Internet moving image, and keywords are extracted.
In addition, operation information such as channel selection / recording of a program or viewing of an Internet video is selected according to a selection decision input from the input unit 1 and a program keyword for the focused program and Internet video in the search result list. It outputs to the preference score update part 5.
If the selected content is an internet video found by searching from the program, the keyword of the program and the internet video is output to the correlation score update unit 8. Subsequently, in the case of an Internet video, the metadata and the playback request are output to the Internet video playback unit 11, and in the case of a program, the metadata and the channel selection / recording request are output to the program channel selection / recording unit 10.
Also, the preference score of each keyword is acquired from the preference score inquiry unit 4 in accordance with the search instruction input from the input unit 1 for the focused program or Internet video in the search result list, and the preference score is in descending order. Display an ordered list of keywords.
In the keyword list, the keyword selected by the user and the operation information (here, “search”) are output to the preference score update unit 5 in accordance with the selection decision and the search instruction from the input unit 1. Subsequently, if the selected content is an Internet moving image found by searching from the program, the keywords of the program and the Internet moving image are output to the correlation score update unit 8. Further, in the case of Internet video, a keyword having the highest correlation score (hereinafter referred to as a correlation keyword) among the keywords selected by the user is acquired from the correlation keyword inquiry unit 7 and a cross search is performed. In the case of a program, the user selects A cross-sectional search is performed based on the keyword.

The preference score inquiry unit 4 outputs a preference score with reference to the preference score storage unit 6 in response to a request input from the program data management unit 2 and the cross search unit 3.
The preference score update unit 5 holds a preference score to be updated at each operation, and determines a preference score for each operation based on operation information input from the program data management unit 2 and the cross-sectional search unit 3. Further, the determined preference score is added to the keyword preference score from the program data management unit 2 and the cross search unit 3 to update the data in the preference score storage unit 6.
The preference score storage unit 6 stores a preference score for each keyword.

The correlation keyword inquiry unit 7 outputs a correlation keyword with reference to the correlation score storage unit 9 in response to a request input from the cross search unit 3.
The correlation score update unit 8 adds a certain constant to the correlation score between the program input from the cross search unit 3 and the keyword of the Internet moving image, and updates the data in the correlation score storage unit 9.
The correlation score storage unit 9 stores a correlation score between keywords of a program and an Internet video.

The program channel selection / recording unit 10 selects / records a program based on program metadata input from the program data management unit 2 and the cross search unit 3 and a channel selection / recording request.
The Internet video playback unit 11 connects to each distribution service (not shown) via the Internet 200 based on the Internet video metadata and the playback request input from the cross-search unit 3, for example, content streaming data Receive and stream playback.

  Next, the operation of the content search system 100 will be described. 2 and 3 are flowcharts showing the operation of the content search system according to the first embodiment. FIG. 2 shows the search processing operation of the program data management unit 2 and FIG. 3 shows the search processing operation of the cross search unit 3. ing. First, the search processing operation of the program data management unit 2 will be described with reference to FIG.

  When the user starts watching the program, the program data management unit 2 receives the metadata of each program, extracts a keyword by performing morphological analysis on the metadata (step ST1). When the user presses the program guide button, the input unit 1 outputs a program guide display instruction as an operation signal to the program data management unit 2, and the program data management unit 2 is given to each program according to the input program guide display instruction. A program guide is displayed based on the metadata (step ST2).

  The program data management unit 2 determines whether or not an operation signal indicating a channel selection / recording request is input from the input unit 1 (step ST3). The program data management unit 2 receives a selection decision as an operation signal from the input unit 1 for the focused program in the program table, that is, an operation signal indicating a channel selection / recording request is input in step ST3. If it is determined that the preference score is obtained, the preference score is acquired from the preference score inquiry unit 4 for the keyword of the program selected from the program guide, and the preference score is updated with the keyword having the highest preference score and the operation information indicating channel selection / recording of the program. It outputs to the part 5 (step ST4).

  The preference score update unit 5 updates the preference score in the preference score storage unit 6 based on the operation information indicating channel selection / recording of the program input in step ST4 (step ST5). Further, the program data management unit 2 outputs a program channel selection / recording request and program metadata to the program channel selection / recording unit 10, and the program channel selection / recording unit 10 selects and records the program (step). ST6), the process ends.

On the other hand, when it is determined in step ST3 that an operation signal indicating a channel selection / recording request is not input, the program data management unit 2 determines whether an operation signal indicating a search request is further input. (Step ST7). If it is determined in step ST7 that an operation signal indicating a search request is not input, the process returns to step ST3.
On the other hand, if it is determined in step ST7 that an operation signal indicating a search request has been input, the program data management unit 2 outputs the keyword selected by the user to the cross search unit 3 and is selected from the program table. A preference score for the program keyword is acquired from the preference score inquiry unit 4 (step ST8), and a keyword list in which the preference scores are arranged in descending order is displayed (step ST9).

  Further, when a selection decision or a search instruction is input as an operation signal from the input unit 1 in the keyword list displayed in step ST9, the program data management unit 2 selects the keyword and operation information (here, “search”) selected by the user. Is output to the preference score update unit 5, and the preference score update unit 5 updates the preference score in the preference score storage unit 6 based on the operation information indicating the search (step ST10). The cross search unit 3 generates a search command based on the keyword input in step ST8, and outputs the search command to the search server (not shown) of each distribution service via the program data management unit 2 and the Internet 200. (Step ST11). The program data management unit 2 and the search server of each distribution service search the Internet moving image and the program based on the search command input in step ST11, and output and transmit the search result to the cross search unit 3 (step ST12). Thereafter, the processing operation of the crossing search unit 3 shown in FIG. 3 is continued (A in FIG. 2).

Next, the search processing operation of the cross search unit 3 will be described with reference to FIG.
When the search result is input in step ST12 (A in FIG. 3), the cross search unit 3 extracts a keyword by performing morphological analysis on the metadata attached to the Internet video (step ST13), and a list of search results. Is displayed (step ST14). Furthermore, the cross-search part 3 has received a selection decision as an operation signal from the input part 1 for the program or Internet video that has been focused on in the search result list, that is, whether a channel selection / recording / playback request has been input. It is determined whether or not (step ST15).

First, the case where it is determined in this step ST15 that a channel selection / recording / playback request has been input will be described.
The cross search unit 3 obtains a preference score from the preference score inquiry unit 4 for a keyword of a program selected from the program guide, and selects a keyword with the highest preference score and program selection / recording or Internet video viewing. Operation information is output to the preference score update part 5 (step ST16). The preference score update unit 5 updates the preference score in the preference score storage unit 6 based on the operation information input in step ST16 (step ST17).

  Next, the cross search unit 3 determines whether or not the content selected and determined in step ST15 is a program (step ST18). If it is determined in step ST18 that the content selected and determined is a program, the cross search unit 3 outputs a program channel selection / recording request and program metadata to the program channel selection / recording unit 10. The program channel selection / recording unit 10 selects and records a program (step ST19), and the process ends.

  On the other hand, if it is determined in step ST18 that the content selected and determined is not a program, that is, the content is an Internet video, it is further determined whether or not the Internet video is an Internet video found by searching for a program. Is performed (step ST20). If it is determined in step ST20 that the Internet moving image is not found by searching for a program, the process proceeds to step ST22.

  On the other hand, when it is determined in step ST20 that the Internet moving image is found by searching for the program, the cross-sectional search unit 3 outputs the keyword of the program and the Internet moving image to the correlation score updating unit 8, and the correlation score updating unit 8 Updates the correlation score in the correlation score storage unit 9 (step ST21). Further, the cross search unit 3 outputs the Internet video metadata and the playback request to the Internet video playback unit 11, and the Internet video playback unit 11 connects to each distribution service (not shown) via the Internet 200, and The streaming data is received and streaming reproduction is performed (step ST22), and the process is terminated.

Next, a case will be described in which it is determined in step ST15 that a channel selection / recording / playback request has not been input.
Crossing search unit 3 determines whether or not a search instruction is input as an operation signal from input unit 1 (step ST23). If it is determined in step ST23 that no search instruction has been input, the process returns to step ST15. On the other hand, if it is determined in step ST23 that a search instruction has been input, a preference score is acquired from the preference score inquiry unit 4 for the keyword of the content selected by the user from the list of search results (step ST24). A list of keywords with preference scores arranged in descending order is displayed (step ST25).

  Further, when a selection decision or a search instruction is input as an operation signal from the input unit 1 in the keyword list displayed in step ST25, the cross search unit 3 selects the keyword selected by the user and the operation information (here, “search”). ) To the preference score update unit 5, and the preference score update unit 5 updates the preference score in the preference score storage unit 6 based on the operation information indicating the search (step ST26).

  Next, the cross search unit 3 determines whether or not the content instructed to be searched is a program (step ST27). If it is determined in step ST27 that the content instructed to be searched is a program, the cross search unit 3 generates a search command based on the keyword selected by the user in the keyword list displayed in step ST25, and manages program data. It is output and transmitted to the search server (not shown) of each distribution service via the unit 2 and the Internet 200 (step ST28).

  The program data management unit 2 and the search server of each distribution service execute a search for Internet moving images and programs based on the search command input in step ST28, and output and transmit the search result to the cross-sectional search unit 3 (step ST29). . Based on the search result input in step ST29, the cross search unit 3 extracts keywords by performing morphological analysis on metadata attached to the Internet video (step ST30) and displays a list of search results (step ST31). ).

  On the other hand, if it is determined in step ST27 that the search-instructed content is not a program, that is, the content is an Internet video, it is further determined whether or not the Internet video is a program found by searching for a program. Perform (step ST32). If it is determined in step ST32 that the Internet movie is not found by searching for a program, the process proceeds to step ST34.

  On the other hand, when it is determined in step ST32 that the Internet moving image is found by searching for the program, the cross search unit 3 outputs the keyword of the program and the Internet moving image to the correlation score updating unit 8, and the correlation score updating unit 8 Updates the correlation score in the correlation score storage unit 9 (step ST33). Further, the cross search unit 3 acquires a correlation keyword from the correlation keyword inquiry unit 107 for the keyword selected by the user in the keyword list displayed in step ST25, and combines the keyword selected by the user and the correlation keyword by OR. (Step ST34). Using the correlation keyword combined in step ST34, the process proceeds to step ST28.

Next, the process in which the preference score update unit 5 updates the preference score and the processes in steps ST4, ST5, ST16, and ST17 in the description of the processing operation will be described with specific examples. FIG. 4 is an explanatory diagram showing processing of the preference score update unit of the content search system according to Embodiment 1, and shows an example of processing for updating the preference score when a certain program is viewed.
The preference score update unit 5 acquires the keyword “XXX” having the highest preference score. When the score “+3” of the operation information “viewing” is acquired from the operation-specific preference score list, “XXX” is searched from the keyword-specific preference score list. Then, the score of “XXX” is updated with the addition of the operation-specific preference score “+3”.

Next, the process in which the correlation score update unit 8 updates the correlation score and the processes in steps ST21 and ST33 in the description of the above processing operation will be described with a specific example. FIG. It is explanatory drawing which shows the process of a correlation score update part. In an Internet video found by searching from a keyword “YYY” of a program, when “ZZZ” is acquired as a keyword having the highest preference score when a selection decision is input, or a search instruction is input and selected by the user A process of adding “1” to the correlation score when “ZZZ” is acquired as a keyword is shown.
When the correlation score update unit 8 acquires the program keyword “YYY” and the Internet video keyword “ZZZ” from the cross-search unit 3, the correlation score update unit 8 searches the correlation score list for the correlation “ZZZ → YYY” and sets the score to “1”. Update to the addition.

  As described above, according to the first embodiment, when the program data management unit 2 receives a search instruction from the input unit 1 for displaying the program guide, the program data management unit 2 displays the keyword list and displays the keyword list. Is selected, the selected keyword is output, the cross search unit 3 outputs a search command based on the selected keyword input from the program data management unit 2, and the program data management unit 2 and the external server search When a keyword for Internet video is extracted based on a search result entered by performing a search based on an instruction, a list of search results is displayed, a selection instruction and a search instruction from the input unit are accepted, and a search instruction is input Displays a list of keywords based on the search instruction, accepts a selection instruction from the input unit 1, outputs a search instruction based on the selected keyword, Since the data management unit 2 and the external server perform a search based on a search command and display a list of search results to be input, more programs can be used as search results in reverse search from the Internet to the broadcast. Can be acquired. Thereby, the content according to the user's preference can be easily searched from both the broadcast and the Internet.

  DESCRIPTION OF SYMBOLS 1 Input part, 2 Program data management part, 3 Crossing search part, 4 Preference score inquiry part, 5 Preference score update part, 6 Preference score storage part, 7 Correlation keyword inquiry part, 8 Correlation score update part, 9 Correlation score storage part 10 program selection / recording unit, 11 Internet video playback unit, 100 content search system, 200 Internet.

Claims (1)

An input unit for receiving a program display instruction, a search instruction, and a selection instruction input by a user;
A keyword of a viewing program is extracted, a program guide is displayed based on the program display instruction, and when a selection instruction is input from the input unit with respect to the display of the program guide, operation metadata based on the program metadata and the selection instruction When the search instruction is input from the input unit for the display of the program guide, the list of keywords is displayed, the selection instruction from the input unit is received, and the selected keyword is output as program data The management department,
A first search command based on the selected keyword input from the program data management unit is output, and the program data management unit and an external server perform a search based on the first search command and input the first search command. Based on the search results, the Internet video keywords are extracted, the list of the first search results is displayed, and the selection instruction and the search instruction from the input unit are received,
When a selection instruction is input, metadata of the program or Internet video and operation information based on the selection instruction are output,
When a search instruction is input, a list of keywords based on the search instruction is displayed, a selection instruction from the input unit is received, a second search instruction based on the selected keyword is output, and the program data A cross-sectional search unit that displays a list of second search results input by the management unit and the external server performing a search based on the second search command;
A preference score storage unit for storing preference scores of keywords of the program and the Internet video;
A preference score inquiry unit for acquiring a preference score of a keyword of a program and an Internet video input from the program data management unit and the cross search unit from the preference score storage unit;
A preference score update unit that updates the preference score stored in the preference score storage unit based on operation information input from the program data management unit and the cross-sectional search unit and keywords of the program and the Internet video;
A correlation score storage unit for storing a correlation score between keywords of the program and the Internet video;
A correlation keyword inquiry unit that refers to the correlation score storage unit and acquires a keyword having the highest correlation score among keywords of programs and Internet videos input from the cross search unit;
A correlation score update unit for adding a constant to the correlation score between the keywords of the program and the Internet video input from the cross search unit;
A program channel selection and recording unit that selects and records a program based on the metadata and operation information of the program input from the program data management unit and the cross search unit;
A content search system comprising: an Internet video playback unit that plays back an Internet video based on metadata and operation information of the Internet video input from the cross search unit.

Images