JP6678425B2 - User preference specifying device, content distribution device, user preference specifying method, content distribution method - Google Patents

Description

  The present invention relates to a technique for specifying a user's preference from a CM of a broadcast program.

  With the increase in the number of television broadcast channels and the spread of Internet broadcasts, the number of opportunities for broadcast users to come into contact with a large amount of information has increased dramatically. However, since these broadcasts are sent to an unspecified number of users, there is often a difference between the information requested by each user and each user can select their own information from among many information. Need to find the information they need. In addition, for an information transmitter side such as a broadcasting station or each maker, since information transmission to an unspecified number of users has a small appeal effect, it is necessary to perform information transmission tailored to individual users. For this reason, technology for presenting information according to the tastes of individual users is being developed.

  For example, Patent Literature 1 proposes storing identification information and position information of a television program watched or recorded by a user, and recommending a broadcast program according to the user's preference determined from the information.

  Further, in Patent Literature 2, user preference information is generated and accumulated from a user's behavior history such as a viewing history of a television program or a browsing history of an Internet site, and an activity history is obtained for an item extracted based on the preference information. It has been proposed to present it to a different media than the media that was used. For example, based on the items extracted from the browsing history of the Internet site, a broadcast program to be received by television broadcast is recommended.

JP 2010-259105 A (Paragraph 0013-0017, FIG. 23) JP 2011-95814 A (paragraphs 0011-0020, FIG. 1)

  However, in Patent Literatures 1 and 2, the user's preference information is inferred from the information of the viewed or recorded program and the browsing information of the Internet site, but the user's preference cannot be specified from the CM.

  The present invention has been made in consideration of the above-described problems, and has as its object to specify a user's preference from a CM of a broadcast program.

  A user preference specifying device according to the present invention includes a broadcast receiving unit that receives a broadcast signal and demodulates an audio signal of a broadcast program, a CM extractor that extracts a CM audio signal from the audio signal of the broadcast program, A keyword extraction unit for extracting a keyword that is a voice pattern of a keyword, a category database in which the keyword and its category are stored in association with each other, and a keyword extraction unit corresponding to the keyword extracted from the CM audio signal by referring to the category database. A CM category extracting unit for extracting a category to be performed as a CM category, a CM category database in which the CM categories are accumulated together with the number of times of extraction, and a CM category database to refer to a specific category among the CM categories based on the number of times of extraction. Preference category specified as a preference category preferred by the user It includes a tough, a.

User preferences specifying method of the present invention includes the steps of broadcast receiver demodulates the audio signal of the broadcast program receiving a broadcast signal, comprising the steps of CM extracting section extracts the C M sound voice signal from the audio signal of the broadcast program the steps of the keyword extraction section extracts the keyword is a particular voice pattern from the C M sound voice signal, with reference to the category database that CM category extraction unit is stored in correlated with its category keyword, C M sound step a, step a, the preference category specifying unit is CM category C M category is stored in the CM category database are correlated to the extraction times of extracting the category corresponding to the keyword extracted from the voice signal as a CM category Referring to database of CM category stored in the CM category database, the extraction times Particular category based, comprising the steps of: identifying as a preference category that the user prefers, the.

  A user preference specifying device according to the present invention includes a broadcast receiving unit that receives a broadcast signal and demodulates an audio signal of a broadcast program, a CM extractor that extracts a CM audio signal from the audio signal of the broadcast program, A keyword extraction unit for extracting a keyword that is a voice pattern of a keyword, a category database in which the keyword and its category are stored in association with each other, and a keyword extraction unit corresponding to the keyword extracted from the CM audio signal by referring to the category database. A CM category extracting unit for extracting a category to be performed as a CM category, a CM category database in which the CM categories are accumulated together with the number of times of extraction, and a CM category database to refer to a specific category among the CM categories based on the number of times of extraction. Preference category specified as a preference category preferred by the user It includes a tough, a. Therefore, the user's preference can be specified from the CM of the broadcast program.

User preferences specifying method of the present invention includes the steps of broadcast receiver demodulates the audio signal of the broadcast program receiving a broadcast signal, comprising the steps of CM extracting section extracts the C M sound voice signal from the audio signal of the broadcast program the steps of the keyword extraction section extracts the keyword is a particular voice pattern from the C M sound voice signal, with reference to the category database that CM category extraction unit is stored in correlated with its category keyword, C M sound step a, step a, the preference category specifying unit is CM category C M category is stored in the CM category database are correlated to the extraction times of extracting the category corresponding to the keyword extracted from the voice signal as a CM category Referring to database of CM category stored in the CM category database, the extraction times Particular category based, comprising the steps of: identifying as a preference category that the user prefers, the. Therefore, the user's preference can be specified from the CM of the broadcast program.

FIG. 2 is a block diagram illustrating a configuration of a user preference specifying device according to Embodiment 1. It is a figure showing signs that a keyword is extracted from a CM audio signal. It is a figure showing a category database. 5 is a flowchart showing an operation of the user preference specifying device according to the first embodiment. FIG. 9 is a block diagram showing a configuration of a content display device according to Embodiment 2. 9 is a flowchart showing an operation of the content display device according to Embodiment 2. FIG. 14 is a diagram showing a display screen of a content list in the content display device according to the second embodiment.

<A. First Embodiment>
<A-1. Configuration>
FIG. 1 is a block diagram showing a configuration of the user preference specifying device 1 according to the first embodiment. The user preference specifying device 1 is, for example, a television receiver having a digital broadcast receiving function, and includes a display unit (not shown in FIG. 1) for displaying the received digital broadcast.

  The user preference specifying device 1 includes a digital broadcast receiving unit 2, a reservation managing unit 3, a viewing managing unit 4, a program database (DB) 5, a CM extracting unit 6, a keyword database (DB) 7, a keyword extracting unit 8, a category database ( DB) 9, a CM category extraction unit 10, a CM category database 11, a preference category identification unit 12, and a preference category database 13.

  The digital broadcast receiving unit 2 amplifies the digital broadcast signal received by the antenna 14 and demodulates the digital broadcast signal into a video / audio signal including a video signal and an audio signal. This operation is the same as the operation in a general digital broadcast receiver. Hereinafter, a video / audio signal of a broadcast program is referred to as program data.

  Although not shown in FIG. 1, a reservation operation such as a reservation for viewing or recording of a broadcast program can be performed by an operation from a switch or a remote controller (remote controller) provided on the main body of the user preference specifying device 1. Information on the execution result of these reservations (success or failure of reservation execution, viewing channel, viewing time, etc.) is managed by the reservation management unit 3. The information (viewing channel, viewing time, etc.) related to viewing of a broadcast program without reservation is managed by the viewing management unit 4.

  The program data that has been viewed or recorded is stored in the program database 5.

  The program includes a main part and a commercial. The CM extraction unit 6 extracts a CM audio signal from the program data stored in the program database 5. The extraction of the CM audio signal is performed by recognizing the switching between the main part and the CM based on a difference in video or audio between the main part and the CM. The program data demodulated by the digital broadcast receiving unit 2 is sent directly to the CM extracting unit 6 without being stored in the program database 5, and the CM extracting unit 6 may extract a CM audio signal from the program data. is there.

  The keyword database 7 stores voice pattern data, which is a voice signal of a keyword. The keyword extracting unit 8 refers to the keyword database 7, compares and analyzes the CM audio signal extracted by the CM extracting unit 6 with the audio pattern data, and extracts a keyword from the CM audio signal. This keyword extraction is performed by determining whether or not voice pattern data is detected in the CM voice signal.

  FIG. 2 is a diagram illustrating a method of extracting a keyword by the keyword extracting unit 8. It is assumed that two types of voice pattern data of “Edison” and “engine” are stored in the keyword database 7. In the waveform of FIG. 2, the horizontal axis represents time, and the vertical axis represents the amplitude of the input voltage. When the voice pattern data “engine” is detected in the voice signal of the CM, the keyword “engine” has been extracted from the CM. On the other hand, if the audio pattern data “Edison” is not detected in the audio signal of the CM, it means that the keyword “Edison” has not been extracted from the CM.

  Further, even for the same keyword, the detection accuracy of the keyword can be improved by preparing a plurality of voice pattern data having different intonation or pronunciation.

  The category database 9 stores a keyword and a category to which the keyword belongs in association with each other. FIG. 3 shows an example of the category database 9. The keywords include those indicating the product name and those indicating the sponsor name. For example, the keywords “meat” and “confectionery shop B” belong to the category “gourmet”. As described above, the category corresponds to a higher-level concept of the keyword.

  The CM category extraction unit 10 refers to the category database 9 and extracts a category corresponding to the keyword extracted from the CM audio signal by the keyword extraction unit 8 as a CM category. For example, as shown in FIG. 2, when the keyword “engine” is extracted from the CM, “car” is extracted as the CM category. The CM categories thus extracted are stored in the CM category database 11 together with the date and time of extraction.

  The preference category specifying unit 12 specifies, from the CM categories stored in the CM category database 11, a CM category that seems to match the user's preference as a preference category. Here, for example, the CM category with the largest number of extractions is set as a preference category. If only the CM categories extracted during the past six months are set as the search range, the latest preference of the user can be reflected. As described above, the condition based on the CM category extraction time may be set. The preference category identified by the preference category identification unit 12 is stored in the preference category database 13 as preference information together with information such as the number of times and the specific date and time of the preference category.

  Next, a hardware configuration of the user preference specifying device 1 will be described. The user preference specifying device 1 includes a processor, a memory, a receiving device, and an input interface (I / F). The digital broadcast receiving unit 2, the reservation management unit 3, the viewing management unit 4, the CM extraction unit 6, the keyword extraction unit 8, the CM category extraction unit 10, and the preference category identification unit 12 are stored in a memory such as a RAM (Random Access Memory). The implemented software program is realized by a processor such as a CPU (Central Processing Unit) executing the software program. However, these may be realized, for example, by cooperation of a plurality of processors. The program database (DB) 5, the keyword database (DB) 7, the category database (DB) 9, the CM category database 11, and the preference category database 13 are realized by a memory.

<A-2. Operation>
FIG. 4 is a flowchart showing the operation of the user preference specifying device 1. Hereinafter, the operation of the user preference specifying device 1 will be described with reference to FIG. First, the user preference specifying device 1 amplifies and modulates a digital broadcast signal received by the antenna 14 to create a video / audio signal (program data) (step S101). This program data is stored in the program database 5.

  Next, the reservation management unit 3 determines whether the creation operation in step S101 is an operation (reservation operation) based on a reservation function such as viewing reservation or recording reservation (step S102). If the operation is a reservation operation, it is determined whether the reservation was successful (step S103). If the reservation is successful, the process proceeds to the CM extraction process (step S105) by the CM extraction unit 6.

  On the other hand, if the reception operation in step S101 is not a reservation operation (step S102: No), or if the reservation operation fails but the reservation fails (step S103: No), the viewing management unit 4 determines the elapse of the viewing time. I do. The viewing management unit 4 measures the viewing time of the program for which the program data has been created in step S101, and when a certain time has elapsed (step S104: Yes), the user is not required to view for a short time by zapping or the like. It is determined that the user is continuously watching the program, and the process proceeds to the CM extraction process (step S105) by the CM extraction unit 6. If the program viewing time does not reach the predetermined time (step S104: No), the process returns to step S101.

  In step S105, the CM extracting unit 6 extracts a CM from the program data stored in the program database 5. Next, the keyword extracting unit 8 compares the CM voice signal with the voice pattern data (keyword voice signal) held in the keyword database 7 to determine whether the CM voice includes the keyword (step S106). . If the CM voice does not include a keyword (step S106: No), the process returns to step S101.

  If the CM voice includes a keyword, the keyword extracting unit 8 extracts the keyword (step S107).

  Next, the CM category extraction unit 10 refers to the category database 9 and extracts a category corresponding to the keyword extracted in step S107 as a CM category (step S108). The CM category extracted in step S108 is stored in the CM category database 11 (step S109).

  Next, the preference category identification unit 12 selects a CM category that seems to match the user's preference based on the CM category stored in the CM category database 11 and information such as the date and time of extraction and the number of times of extraction. The category is specified (step S110).

  The preference category is stored in the preference category database 13 together with information such as the number of extractions and the date and time of the extraction (step S111), and the process ends.

<A-3. Modification>
In the above description, the user preference specifying device 1 has been described with respect to the reception of digital broadcasting. However, the present invention can be applied to the case of receiving analog broadcasting or radio broadcasting.

  Also, as a method of extracting a CM or extracting a CM category, a method of extracting a keyword by voice analysis from a CM audio signal has been described. However, a method of extracting a CM category using a video method or a method combining video and audio is used. You may. In addition, the CM category may be extracted using subtitles, data broadcasting, or various types of data superimposed on the broadcasting, for example, application information or the like used in cooperation with broadcasting and communication.

  Further, in the above description, the digital broadcast receiving unit 2, the reservation management unit 3, the viewing management unit 4, the CM extraction unit 6, the keyword extraction unit 8, the CM category extraction unit 10, and the preference category identification unit 12 have a processor such as a memory. By operating according to the software program stored in the software. However, instead of this, the digital broadcast receiving unit 2, the reservation management unit 3, the viewing management unit 4, the CM extraction unit 6, the keyword extraction unit 8, the CM category extraction unit 10, and the preference category identification unit 12 execute the operation by hardware. May be realized by a signal processing circuit realized by the electric circuit described above. A software digital broadcast receiving unit 2, a reservation managing unit 3, a viewing managing unit 4, a CM extracting unit 6, a keyword extracting unit 8, a CM category extracting unit 10, a preference category specifying unit 12, and a hardware digital broadcasting receiving unit 2, As a concept combining the reservation management unit 3, the viewing management unit 4, the CM extraction unit 6, the keyword extraction unit 8, the CM category extraction unit 10, and the preference category identification unit 12, "processing circuit" is used instead of the word "unit". Can also be used.

<A-4. Effect>
The user preference specifying device 1 according to the first embodiment receives a broadcast signal and demodulates an audio signal of a broadcast program, and extracts a CM audio signal from the audio signal of the broadcast program. a CM extraction unit 6, the keyword extraction section 8 extracts a keyword is a particular voice pattern from the CM audio signal, a category database 9 keyword and its category is stored in association, with reference to the category database 9 A CM category extracting unit 10 for extracting a category corresponding to the keyword extracted from the CM audio signal by the keyword extracting unit 8 as a CM category; a CM category database 11 in which the CM categories are stored together with the number of extractions; 11 and a specific category based on the number of extractions of the CM category Includes a preference category specifying unit 12 which specifies a preference category that the user prefers, the. Therefore, the user's preference can be specified from the CM of the broadcast program.

  In addition, the user preference specifying device 1 further includes a reservation management unit 3 that manages a result of executing a reservation relating to recording or viewing of a broadcast program, and a CM extraction unit 6 outputs a CM from an audio signal of a broadcast program demodulated by executing the reservation. Extract audio signal. Therefore, it is possible to accurately specify the user's preference from the CM of the broadcast program which the user intends to view and watch instead of zapping.

  Further, the user preference specifying method according to Embodiment 1 receives a broadcast signal, demodulates an audio signal of a broadcast program, extracts an audio signal of a CM portion from an audio signal of the broadcast program, and extracts an audio signal of a CM portion from the audio signal of the CM portion. A specific voice pattern is extracted as a keyword, a keyword database in which the keyword is associated with the category is referred to, a category corresponding to the keyword extracted from the voice signal of the CM portion is extracted, and a voice signal of the CM portion is extracted. The category corresponding to the keyword extracted from is stored in association with the number of times of extraction, and among the stored categories, a specific category based on the number of times of extraction is specified as a preference category that the user prefers. Therefore, the user's preference can be specified from the CM of the broadcast program.

<B. Second Embodiment>
<B-1. Configuration>
FIG. 5 is a block diagram showing a configuration of a content display device 200 according to Embodiment 2. The content display device 200 includes a content control device 15 and a display device 19 in addition to the user preference specifying device 1 of the first embodiment. FIG. 5 shows the content display device 200 including the user preference specifying device 1, the content control device 15, and the display device 19, but the content distribution device may be configured by removing the display device 19 from these configurations. That is, FIG. 5 is also a block diagram illustrating a configuration of the content distribution device according to the second embodiment.

  The content control device 15 includes a content database 16, a content extraction unit 17, and a content distribution unit 18. The content control device 15 is configured by, for example, a personal computer (PC) having a server function, and may be connected to the user preference specifying device 1 via a network.

  The content is stored in the content database 16 by a removable disk such as a USB memory, or by content distribution via an external network. In the content database 16, the content is stored in association with the category. Specifically, for example, information such as a tag corresponding to a category is added to the content, or the storage location of the content is divided according to the category.

  The content extracting unit 17 extracts content belonging to a specific category from the content database 16.

  The content distribution unit 18 distributes the content extracted by the content extraction unit 17 to the display device 19.

  The display device 19 includes a content receiving unit 20 and a display unit 21. The content receiving unit 20 receives the content distributed from the content distribution unit 18 of the content control device 15. The display unit 21 is configured by a liquid crystal display or the like, and displays the content received by the content receiving unit 20.

<B-2. Operation>
FIG. 6 is a flowchart illustrating operations of the content control device 15 and the display device 19 of the content display device 200. Hereinafter, the operation of the content control device 15 and the display device 19 will be described with reference to FIG. 6, but the operation of the user preference specifying device 1 is the same as that of the first embodiment, and thus the description thereof will be omitted.

  As described in the first embodiment, the user preference information extracted from the CM of the program watched or recorded by the user is stored in the preference category database 13 of the user preference specifying device 1. The content extraction unit 17 of the content control device 15 operates as a category acquisition unit that acquires the preference category stored in the preference category database 13, and furthermore, the content that matches the acquired preference category (hereinafter, referred to as “preference content”). Is determined in the content database 16 (step S201). If the favorite content exists in the content database 16, the favorite content is extracted from the content database 16 by the content extracting unit 17 (Step S202), and is distributed to the display device 19 by the content distribution unit 18 (Step S203). If there is no preference content related to any preference category stored in the preference category database 13 in the content database 16, the process ends as it is (step S201: No).

  In the display device 19, the preference content distributed in step S203 is received by the content receiving unit 20, and is displayed on the display unit 21 (step S204). However, the display of the preference content on the display unit 21 may be performed not by automatically displaying the preference content distributed in step S203 but by receiving an operation by the user. For example, it is conceivable that the preference content is displayed when a specific remote control button is pressed or immediately after the main power of the display device 19 is turned on. Thus, it is possible to prevent a normal broadcast program, that is, a broadcast program acquired by the digital broadcast receiving unit 2 from being viewed.

  When a plurality of favorite contents are extracted in step S202, a list of them may be displayed on the display unit 21 as shown in FIG. In that case, the priority order of the preference content may be indicated based on information such as the number of times or the date and time of extraction of the preference category to which each preference content belongs. That is, the content extracting unit 17 also operates as a priority assigning unit that assigns a priority to a plurality of preference contents extracted from the content database 16 based on the number of times or the date and time of extraction of a preference category to which the preference content belongs. . For example, a plurality of preference contents can be displayed in the order of the number of times the preference category to which the preference contents belong is extracted. Further, the “recommended degree” according to the number of times of extraction of the preference category to which the favorite content belongs may be displayed. In the example of FIG. 7, when the number of times of extraction is large in the order of the preference categories “car”, “fashion”, and “gourmet”, the contents are arranged in that order, and the recommendation level is indicated by the number of marks.

<B-3. Modification>
In FIG. 5, the display unit 21 is shown as a component of the display device 19 which is a device different from the user preference specifying device 1, but may be a display unit (not shown) of the user preference specifying device 1. In that case, the user preference specifying device 1 and the display device 19 may be configured together by a digital broadcast receiver such as a liquid crystal television.

<B-4. Effect>
The content distribution device according to the second embodiment includes a user preference specifying device 1 and a content control device 15. The content control device 15 includes a category acquisition unit (content extraction unit 17) that acquires the preference category identified by the user preference identification device 1, a content database 16 that stores the content in association with the category, and a content database 16. The content extraction unit 17 extracts a content corresponding to a preference category as a preference content, and a content distribution unit 18 that distributes the preference content extracted by the content extraction unit 17. Therefore, it is possible to distribute the content that matches the user's preference.

  The content control device 15 further includes a priority assigning unit that assigns a priority to the plurality of preference contents extracted by the content extraction unit 17 based on information on the number of times or the date and time of extraction of the preference category of the preference content. Therefore, it is possible to present a plurality of contents suitable for the user's preference to the user in an easy-to-understand manner.

  The content distribution method according to the second embodiment obtains a user preference category specified by the user preference specification method according to the first embodiment, and stores the content in the content database 16 stored in association with the category. Is extracted as a preference content, and the preference content is distributed. Therefore, it is possible to distribute the content that matches the user's preference.

  In the present invention, each embodiment can be freely combined, or each embodiment can be appropriately modified or omitted within the scope of the invention.

  INDUSTRIAL APPLICABILITY The present invention is expected to be used as an information transmission device for a specific user such as a digital signage device.

  1 user preference specifying device, 2 digital broadcast receiving unit, 3 reservation managing unit, 4 viewing managing unit, 5 program database, 6 CM extracting unit, 7 keyword database, 8 keyword extracting unit, 9 category database, 10 CM category extracting unit, 11 CM category database, 12 preference category identification unit, 13 preference category database, 14 antenna, 15 content control device, 16 content database, 17 content extraction unit, 18 content distribution unit, 19 display device, 20 content reception unit, 21 display unit , 200 content display device.

Claims (6)

A broadcast receiving unit that receives a broadcast signal and demodulates an audio signal of a broadcast program;
A CM extraction unit for extracting a CM audio signal from the audio signal of the broadcast program;
A keyword extraction unit that extracts a keyword that is a specific voice pattern from the CM voice signal;
A category database in which the keywords and their categories are stored in association with each other;
A CM category extracting unit that refers to the category database and extracts a category corresponding to the keyword extracted from the CM audio signal by the keyword extracting unit as a CM category;
A CM category database in which the CM categories are stored together with the number of times of extraction,
A preference category identification unit that refers to the CM category database and identifies a specific category based on the number of times of extraction of the CM category as a preference category preferred by a user.
User preference specifying device. Further comprising a reservation management unit that manages the execution result of the reservation related to recording or viewing of the broadcast program,
The CM extracting unit extracts the CM audio signal from the audio signal of the broadcast program demodulated by executing the reservation.
The user preference specifying device according to claim 1. A user preference specifying device according to claim 1,
A content control device;
A content distribution device comprising:
The content control device,
A category acquisition unit that acquires the preference category identified by the user preference identification device,
A content database for storing content in association with categories,
A content extraction unit that extracts a content corresponding to the preference category from the content database as a preference content,
A content distribution unit that distributes the favorite content extracted by the content extraction unit,
Comprising,
Content distribution device. The content control device further includes a priority assigning unit that assigns a priority to the plurality of preference contents extracted by the content extraction unit based on information on the number of times or the date and time of extraction of the preference category of the preference content. ,
The content distribution device according to claim 3. A user preference specifying method performed by the user preference specifying device according to claim 1 or 2,
A step of demodulating an audio signal of the broadcast program the broadcast receiving unit to receive the broadcast signal,
A step of the CM extraction unit extracts the C M sound voice signal from the audio signal of the broadcast program,
A step of the keyword extraction section extracts the keyword is a particular voice pattern from said C M sound voice signal,
Extracting a category in which the CM category extracting unit referring to the category database for the keyword and its category is stored in association, corresponding to the keywords extracted from the C M sound voice signal as the CM category ,
A step to be stored in the CM category database the C M category is assigned corresponding to the extraction times,
A step wherein the preference category specifying unit refers to the CM category database of the CM category stored in the CM category database, a particular category based on the extraction times is specified as the preference category the user preferences, Comprising,
User preference specification method. A content distribution method performed by the content distribution device according to claim 3 or 4, wherein:
The category acquisition unit acquires the preference category identified by the user preference identification device ;
Extracting the contents extraction unit, a content corresponding to the preference category from the content database for storing in association with the category content as the preference content,
And a step of the content distribution section distributes the preference content,
Content delivery method.

Images