JP2011182248A - Mobile communication device and video data selecting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a video data accumulation device and video data output method for selecting or generating video data in accordance with preference information generated based on an action history of a user, while reducing burden on the user for acquiring video data. <P>SOLUTION: A mobile communication device 10 includes: a positional information acquiring unit 11 for acquiring positional information corresponding to the action of a user; an information extracting unit 12 for extracting category information corresponding to the positional information, using a database 20 having category information corresponding to the positional information; a preference information generating unit 13 for generating preference information of the user, based on the category information accumulated in a predetermined period of time; and a video selecting unit 14 for selecting video data based on the preference information generated by the preference information generating unit 13. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a mobile communication device and a video data selection method, and more particularly to a mobile communication device and a video data selection method using preference information.

  In recent years, the storage memory of mobile terminals has increased, and the video viewing environment has evolved due to the enhancement of rendering engines and other functions. Along with this, an increasing number of users watch videos using portable terminals during idle time such as when moving. In addition, the time period for watching TV programs has also changed due to the diversification of lifestyle patterns, such as watching TV programs in the daytime on weekdays together on holidays and watching while moving, such as commuting, It changes according to how you use your time. Furthermore, the spread of hard disk recorders and the increase in capacity have made it possible to record TV programs for a long time, which is one of the factors that changed the time period for viewing TV programs. Along with this change, viewing methods such as transferring TV programs recorded on a hard disk recorder to a portable terminal for viewing are increasing.

  However, in order to transfer a recorded TV program (hereinafter referred to as video data) from a hard disk recorder to a mobile terminal, a program or a program to be transferred from a hard disk recorder in which a large amount of video data is recorded due to an increase in capacity. It is difficult to select a scene. Furthermore, when a mobile terminal is connected to a hard disk recorder and a moving image is transferred, it is necessary to select a program or scene to be transferred, and the user's labor accompanying the transfer work is very large.

  Therefore, Patent Document 1 discloses a display device that can switch between still image data and moving image data display according to user history information for an image displayed on the display device. The user history information is user behavior information extracted using a non-contact IC card or the like, and user preference information is extracted using this information. The display device can switch the image to be displayed according to the extracted user preference information.

  Patent Document 2 discloses a mobile information providing system that can distribute area information suitable for a user's action range to a mobile communication device.

JP 2009-098496 A JP 2003-319428 A

  However, when the user history information generation method disclosed in Patent Document 1 is used, history information cannot be generated unless a non-contact IC card is used. Therefore, the user's action range indicated in the history information is limited to the place where the reader of the non-contact IC card is located. Thereby, there exists a problem that a user's historical information cannot be produced | generated over a wide range.

  Further, in the information providing system disclosed in Patent Document 2, it is necessary for a user who wants to provide information to input various conditions regarding what kind of information is desired to be provided. For this reason, there is a problem that the operation until the information is acquired is troublesome.

  The present invention has been made to solve such a problem, reduces the user's operation effort to acquire video data, and converts video data according to preference information generated based on the user's behavior history. An object of the present invention is to provide a mobile communication device and a video data selection method that can be selected.

  The mobile communication device according to the first aspect of the present invention uses the location information acquisition unit that acquires location information according to user behavior and a database that includes genre information associated with the location information. An information extraction unit that extracts the genre information according to information, a preference information generation unit that generates the user's preference information based on the genre information accumulated within a predetermined period, and video data based on the preference information And a video selection unit for selecting.

  The video data output method according to the second aspect of the present invention uses the step of acquiring position information according to user behavior and a database having genre information associated with the position information, to the position information. Extracting the corresponding genre information; generating the user preference information based on the genre information accumulated within a predetermined period; and selecting video data based on the preference information. It is to be prepared.

  ADVANTAGE OF THE INVENTION According to this invention, the mobile communication apparatus and video data selection method which can reduce the operation effort of the user who acquires video data, and can select video data according to the preference information produced | generated based on the user's action history Can be provided.

1 is a configuration diagram of a mobile communication apparatus according to a first embodiment. 1 is a configuration diagram of a mobile communication apparatus according to a first embodiment. It is a figure explaining the management data produced | generated in the information extraction part 12 concerning Embodiment 1. FIG. 1 is a configuration diagram of a video data storage device according to a first exemplary embodiment; 3 is a flowchart according to video data acquisition processing according to the first exemplary embodiment; FIG. 3 is a configuration diagram of a mobile communication device according to a second exemplary embodiment.

(Embodiment 1)
Embodiments of the present invention will be described below with reference to the drawings. A mobile communication apparatus according to Embodiment 1 of the present invention will be described with reference to FIG. The mobile communication device 10 includes a position information acquisition unit 11, an information extraction unit 12, a preference information generation unit 13, and a video selection unit 14. The mobile communication device 10 is connected to the database 20 and the video data storage device 30.

  The position information acquisition unit 11 acquires position information corresponding to the user's action. The position information corresponding to the user's action is, for example, GPS (Global Positioning System) information used for specifying the position of the mobile communication device 10. Other examples include destination information registered in the schedule information when the user's schedule information is registered in the mobile communication device 10. The position information acquisition unit 11 outputs the acquired position information to the information extraction unit 12.

  The information extraction unit 12 extracts genre information corresponding to the position information acquired from the position information acquisition unit 11 using the database 20 having genre information associated with the position information. The information extraction unit 12 outputs the position information acquired from the position information acquisition unit 11 to the database 20, and the database 20 outputs genre information corresponding to the acquired position information to the information extraction unit 12.

  Here, the position information acquired by the information extraction unit 12 is address information or the like determined based on GPS information, and the genre information is a product sold at a predetermined address or a service provided. Is classified information. For example, when there is a barber shop or a beauty salon at a predetermined address, “fashion” is extracted as genre information. In addition, when there is a pool or a gym at a predetermined address, “sports” is extracted as genre information. The information extraction unit 12 outputs the extracted genre information to the preference information generation unit 13.

  The preference information generation unit 13 generates user preference information based on the genre information accumulated within a predetermined period. The predetermined period may be one day, one week, or a longer period. The preference information is information regarding the genre of a service provided at a place frequently visited by the user, and is information indicating how many times each genre information is accumulated within a predetermined period. By using this, it is considered that the user wants to acquire video data related to genre information that has been accumulated many times. The preference information generation unit 13 outputs the accumulated genre information with a large number of times as preference information to the video selection unit 14. The preference information generation unit 13 may output only the most accumulated genre information to the video selection unit 14, and outputs one or more genre information accumulated more than a certain number of times to the video selection unit 14. Also good.

  The video selection unit 14 selects video data that the user desires to acquire based on the preference information acquired from the preference information generation unit 13. When the preference information includes “fashion”, the video selection unit 14 selects video data related to fashion. The video data may be a recorded TV program, video data taken by the user himself / herself, or video data acquired via the Internet or the like. These video data may be still images or moving images. The mobile communication device 10 acquires the video data selected by the video selection unit 14 from the video data storage device.

  As described above, by using the mobile communication device according to FIG. 1, user preference information can be generated based on position information corresponding to user behavior. Thereby, since the user can acquire video data related to the preference information from the video data storage device that stores video data such as TV programs, the user can easily perform the operation without performing any special operation. It is possible to acquire video data according to own preference information.

  Further, since position information corresponding to the user's action can be acquired from GPS information or schedule registration information, position information over a wide range can be acquired.

  Then, the detailed structural example of the mobile communication apparatus concerning embodiment of this invention is demonstrated using FIG. In addition to the configuration of the mobile communication device 10 in FIG. 1, the mobile communication device 10 further includes a GPS information acquisition unit 15, an action history information generation unit 16, a communication unit 17, and a video data holding unit 18. Yes. Since the position information acquisition unit 11, the information extraction unit 12, the preference information generation unit 13, and the video selection unit 14 have the same configuration and function as those in FIG. 1, detailed description thereof is omitted.

  The GPS information acquisition unit 15 acquires GPS information composed of latitude and longitude information using a GPS antenna. The GPS information acquisition part 15 acquires GPS information for every predetermined period. The period for acquiring the GSP information can be changed. The GPS information acquisition unit 15 outputs the acquired GPS information to the action history information generation unit 16.

  The action history information generation unit 16 converts the acquired GPS information into address information. At this time, when the external device holds a database in which the GPS information and the address information are associated with each other, the GPS information may be output to the external device to acquire the address information corresponding to the GPS information. Of course, when the user apparatus 10 holds the above-described database, the address information may be acquired using the held database. The action history information generation unit 16 outputs the generated address information to the information extraction unit 12. At this time, the action history information generation unit 16 may output the address information to the information extraction unit 12 as follows.

  The action history information generation unit 16 periodically acquires GPS information from the GPS information acquisition unit 15. For example, the action history information generation unit 16 acquires GPS information every minute. At this time, the action history information generation unit 16 may output the address information to the information extraction unit 12 when, for example, the same GPS information is acquired five times continuously. Thereby, when a user stays in the same place for 5 minutes or more, the user's address information is output to the information extraction unit 12. Therefore, address information regarding a place where the user has just passed is not output to the information extraction unit 12. Therefore, since only the address information related to the place where the user has a certain purpose is output to the information extracting unit 12, the processing load on the information extracting unit 12 and the preference information generating unit 13 is reduced, and the user's preference is further met. Preference information can be generated. The GPS information acquisition cycle and the number of times of acquiring the same GPS information used for determination when outputting the address information to the information extraction unit 12 can be changed as appropriate.

  Further, the action history information generation unit 16 may output address information associated with GPS information acquired within a predetermined time period to the information extraction unit 12. For example, you may perform the process of outputting only the address information matched with the GPS information extracted before 18:00 after 24:00 to the information extraction part 12. FIG. Thereby, preference information outside business hours can be generated. In addition, preference information during business hours can be generated by changing the time zone, and preference information during holidays can be generated by setting the time zone to weekends.

  The information extraction unit 12 and the preference information generation unit 13 generate preference information based on the address information output from the behavior history information generation unit 16, and the video selection unit 14 selects video data according to the preference information. . The video selection unit 14 can select, for example, video data according to preference information from a TV program guide or the like.

  The communication unit 17 outputs information on the selected video data to the video data storage device 30 in order to acquire the video data selected by the video selection unit 14. Further, the communication unit 17 acquires the selected video data from the video data storage device 30 and holds the acquired video data in the video data holding unit 18. The communication unit 17 may use short-range wireless communication such as a wireless LAN for communication with the video data storage device 30 or a network provided by a mobile communication provider. For example, the communication unit 17 communicates with the video data storage device 30 using a wireless LAN or the like at home, and switches the communication method so as to use a network provided by a mobile communication carrier when away from home. Good.

  Next, management data generated in the information extraction unit 12 according to the first exemplary embodiment of the present invention will be described with reference to FIG. FIG. 3 shows the data acquisition date, the day of the week, the time, the address information associated with the GPS information, the information about the service provided at the address, and the service genre information. It is managed in association.

  The data acquisition date, the day of the week, the time, and the address information are output from the action history information generation unit 16. The action history information generation unit 16 outputs address information corresponding to the GPS information to the information extraction unit 12. Moreover, the information extraction part 12 acquires the service information corresponding to the address information output from the action history information generation part 16 using the database which linked | related address information and service information. Furthermore, genre information corresponding to the acquired service information is acquired using a database in which service information and genre information are associated. A database in which address information and service information are associated and a database in which service information and genre information are associated may be held in an external server device or may be held in the mobile communication device 10. In the above description, genre information is acquired using address information and service information. However, a database in which address information and genre information are associated is held in an external server or mobile communication device 10. If there is, genre information corresponding to the address information may be acquired.

  The preference information generation unit 13 uses the data in FIG. 3 to select the most extracted genre information as user preference information. For example, in FIG. 3, the most genre information regarding the supermarket is extracted. Therefore, the preference information generation unit 13 outputs the preference information as a supermarket to the video selection unit 14, and the video selection unit 14 selects video data related to the supermarket from the TV program guide or the like.

  Next, processing related to selection of video data in the video selection unit 14 will be described. The video selection unit 14 manages the title of the video data held in the video data storage device 30, the genre information, the recorded date and time, and whether or not the video data has been transmitted to the user. In addition, other information such as the reproduction time of the video data, the performer of the video data, or the name of the broadcasting company may be further associated and managed.

  The video selection unit 14 uses the preference information acquired from the preference information generation unit 13 and extracts the title of video data having genre information corresponding to the preference information. When there are a plurality of titles of extracted video data, for example, video data with the latest recorded date and time may be selected from video data that has never been transmitted to the user. Alternatively, a plurality of video data that has never been transmitted to the user may be selected.

  Further, when the mobile communication device 10 is equipped with a non-contact IC chip (not shown) in which train commuter pass information is registered, the video selection unit 14 selects the section described in the commuter pass information. The moving time may be acquired and video data that falls within the moving time may be selected. The mobile communication device 10 may have a database that associates the section described in the commuter pass information with the travel time information of the section, and the external device may have the database. Alternatively, the ticket gate passage time in the station premises before the previous day may be recorded on the non-contact IC chip, and the travel time may be calculated from the recorded ticket gate passage time. Thereby, the user can acquire video data corresponding to commuting time or school time.

  Further, the video selection unit 14 may select video data as follows when a plurality of pieces of image data are extracted using the preference information acquired from the preference information generation unit 13. The video selection unit 14 extracts the performers, broadcast companies, etc. of the program most viewed by the user from the user's TV viewing history, and the performers, broadcast companies, etc., from the extracted video data. The associated video data may be selected.

  The video selection unit 14 may select video data to be transmitted to the user by other methods, and the method is not limited to the method described above.

  Next, a configuration example of the video data storage device 30 according to the first exemplary embodiment of the present invention is described with reference to FIG. The video data storage device 30 includes a communication unit 31, a recording data control unit 32, and a recording data holding unit 33.

  The communication unit 31 acquires information regarding video data that the mobile communication device 10 desires to acquire. The communication unit 31 outputs the acquired information to the recording data control unit 32. The recording data control unit 32 extracts the video data corresponding to the acquired information from the recording data holding unit 33 in which the video data is stored, and outputs the video data to the communication unit 31. The recorded data holding unit 33 holds video data of a recorded TV program. The recorded data holding unit 36 may hold moving image data taken by the user himself or moving image data acquired via the Internet or the like.

  The recorded data control unit 32 may generate a digest video (video with a shortened playback time) of the extracted video data and output the digest video to the communication unit 31. In this case, the communication unit 31 outputs the acquired digest video data to the mobile communication device 10. In addition, the recording data control unit 32 displays video selection information indicating whether the user who views the digest video desires to acquire a part of the video data or to acquire all of the extracted video data. In response, video data is generated and output to the communication unit 31. The communication unit 31 outputs the video data acquired from the recording data control unit 32 to the mobile communication device 10.

  Subsequently, a flow of processing in which the mobile communication device 10 according to the first embodiment of the present invention acquires video data will be described with reference to FIG.

  First, the communication unit 17 outputs information related to the video data selected based on the preference information to the video data storage device 30 (S11). Next, the communication unit 17 acquires digest video data related to the selected video data from the video data storage device 30 (S12). Next, the video selection unit 14 receives an information input as to whether or not it is desired to obtain video data related to the browsed digest video data from the user who browsed the digest video data (S13). If the video selection unit 14 receives an information input indicating that the user does not wish to acquire video data, the video selection unit 14 ends the process.

  When the video selection unit 14 receives an information input indicating that acquisition of video data is desired from the user, the video selection unit 14 further receives an information input indicating whether or not acquisition of a part of the video data is desired (S14). . The partial data in the video data is, for example, the first few minutes or the last few minutes of the video data. Here, when it is desired to acquire a part of the video data, the reproduction time of the part of the video data may be designated using the moving time of the user. As described above, the movement time of the user is calculated using commuter pass information registered in the non-contact IC chip.

  If the user does not wish to acquire a part of the video data, that is, if an information input indicating that the user wants to acquire all of the video data is received, the video selection unit 14 issues a video data acquisition request to the video data. The data is output to the data storage device 30, and all of the video data is acquired (S15). In step S <b> 14, when receiving an information input indicating that acquisition of a part of the video data is desired from the user, the video selection unit 14 sends a video data partial acquisition request to the video data storage device 30. Output and acquire some data in the video data (S16).

  As described above, the mobile communication device 10 first receives the digest video data, and the user browses the digest video data, so that the user can determine whether to acquire the video data. Thus, when the user does not want to acquire video data, it is not necessary to store a large amount of video data in the user device. By making it possible to acquire only necessary video data, the storage capacity (video data holding unit 18) of the mobile communication device 10 which is not as large as the video data storage device can be used efficiently. Further, by making it possible to acquire a part of the video data, the storage capacity of the mobile communication device 10 can be used more efficiently.

  When the user device is connected to a large-capacity external storage device, the mobile communication device 10 may acquire all video data from the video data storage device 30 from the beginning.

  As described above, by using the mobile communication device according to the first embodiment of the present invention, genre information for determining user preference is extracted according to the location information acquired by the mobile communication device, Preference information can be generated. Therefore, the user can easily acquire the video data from the video data stored in the video data storage device according to the preference information generated based on the position information.

(Embodiment 2)
Next, a configuration example of the mobile communication device 40 according to the second embodiment of the present invention will be described with reference to FIG. The mobile communication device 40 includes an information extraction unit 42, a preference information generation unit 43, a video selection unit 44, a GPS information acquisition unit 45, an action history information generation unit 46, a communication unit 47, and a video data holding unit 48. And a purchase history recording unit 49. Note that the preference information generation unit 43 to the video data holding unit 48 are the same as the preference information generation unit 13 to the video data holding unit 18 in FIG.

  When the user purchases a product using the mobile communication device 40, the purchase history recording unit 49 records a purchase history including the product name and the purchase time. When the user purchases a product using the mobile communication device 40, for example, the mobile communication device 40 may purchase the product using a non-contact IC chip in which electronic money information is recorded. The purchase history recording unit 49 outputs the recorded purchase history to the information extraction unit 42.

  The information extraction unit 42 acquires genre information corresponding to the product name included in the acquired purchase history, using a database in which the product name and genre information are associated with each other. This database may be held in an external server device or may be held in the mobile communication device 40.

  Here, the information extraction part 42 extracts the genre information matched with the address information in purchase time using the time which purchased the goods contained in purchase history. When the genre information associated with the purchased product differs from the genre information associated with the address information, the information extraction unit 42 associates the purchased product with the purchased product as genre information used to generate preference information. Genre information is used.

  The processing described above is effective in the following cases. For example, a case where there are buildings providing services of different genres on different floors will be described. In this case, in the database associating the address with the service information, one service information is associated with the address where the building is located. For example, service information provided on the first floor of a building is associated with an address. Therefore, when a user purchases a product on a floor other than the first floor of the building, genre information generated based on information output from the action history information generation unit 46 and the purchase history recording unit 49 at the same time is provided. , Each may be different. In such a case, preference information using the genre information generated based on the purchase history information can generate preference information more in line with the user's preference.

  As described above, by using the mobile communication device according to the second embodiment of the present invention, even when multiple genre services are provided at the same address, it is possible to accurately match the user's preference. Taste information can be generated.

  A part or all of the above embodiment is described as in the following supplementary notes, but is not limited thereto.

  (Additional remark 1) The said genre information according to the said positional information is extracted using the database which has the positional information acquisition part which acquires the positional information according to a user's action, and the genre information matched with the said positional information. An information extraction unit; a preference information generation unit that generates the user's preference information based on the genre information accumulated within a predetermined period; and a video selection unit that selects video data based on the preference information. Mobile communication device.

  (Supplementary Note 2) A product purchase history recording unit that records the product purchase history of the user is further provided, and the information extraction unit uses a database having the product purchase history of the user and genre information associated with the product. The mobile communication device according to supplementary note 1, wherein genre information corresponding to the product recorded in the product purchase history recording unit is extracted.

  (Additional remark 3) The said preference information production | generation part respond | corresponds to the said goods when the genre information matched with the positional information in the time shown by the said goods purchase history differs from the genre information matched with the said goods The mobile communication device according to appendix 2, wherein the preference information of the user is generated using the attached genre information.

  (Supplementary Note 4) The preference information generation unit selects genre information in which a predetermined number of genre information of the same type is accumulated within a predetermined period, and the video selection unit is selected by the preference information generation unit 4. The mobile communication device according to any one of supplementary notes 1 to 3, wherein video data related to the genre information is selected.

  (Supplementary Note 5) The video selection unit acquires digest video data of the selected video data, and outputs video selection information indicating whether or not to acquire the video data to a video data storage device. 5. The mobile communication device according to any one of 4 above.

  (Supplementary Note 6) The video selection information includes any one of acquiring the video data, acquiring a part of the video data, or not acquiring the video data. 5. The mobile communication device according to 5.

  (Additional remark 7) The said positional information acquisition part is a user's action determined from the address information or schedule registration information set based on the said user's GPS (Global Positioning System) information as positional information according to the said user's action. The mobile communication device according to any one of appendices 1 to 6, wherein at least one of the destination information is acquired.

  (Additional remark 8) The said information extraction part is a mobile communication apparatus of any one of Additional remark 1 thru | or 7 which extracts the said genre information using the positional information on which the said user stayed more than predetermined time.

  (Supplementary note 9) The mobile communication device according to any one of supplementary notes 1 to 8, wherein the location information acquisition unit acquires location information corresponding to the user's behavior within a predetermined time.

  (Additional remark 10) The said information extraction part extracts the said genre information according to the said positional information using the said database which the external apparatus arrange | positioned outside the said mobile communication apparatus hold | maintains any of Additional remark 1 thru | or 9 The mobile communication device according to claim 1.

  (Additional remark 11) The said information extraction part responded to the said positional information using the database which has the service information matched with the said positional information, and the database which has the said genre information matched with the said service information. 11. The mobile communication device according to any one of appendices 1 to 10, which extracts the genre information.

(Additional remark 12) The step which acquires the positional information according to a user's action,
Extracting the genre information according to the position information using a database having genre information previously associated with the position information;
Generating the user's preference information based on the genre information accumulated within a predetermined period;
Selecting video data based on the preference information.

  Note that the present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 10 Mobile communication apparatus 11 Position information acquisition part 12 Information extraction part 13 Preference information generation part 14 Video selection part 15 GPS information acquisition part 16 Action history information generation part 17 Communication part 18 Video data holding part 20 Database 30 Video data storage apparatus 31 Communication Unit 32 Recording Data Control Unit 33 Recording Data Holding Unit 40 Mobile Communication Device 42 Information Extracting Unit 43 Preference Information Generation Unit 44 Video Selection Unit 45 GPS Information Acquisition Unit 46 Action History Information Generation Unit 47 Communication Unit 48 Video Data Holding Unit 49 Purchase History Recording section

Claims (10)

A location information acquisition unit that acquires location information according to user behavior;
An information extraction unit that extracts the genre information according to the position information using a database having genre information associated with the position information;
A preference information generating unit that generates the user's preference information based on the genre information accumulated within a predetermined period;
A mobile communication device comprising: a video selection unit that selects video data based on the preference information. A product purchase history recording unit for recording the product purchase history of the user;
The information extraction unit includes:
The movement according to claim 1, wherein genre information corresponding to a product recorded in the product purchase history recording unit is extracted using a database having the product purchase history of the user and genre information associated with the product. Communication device. The preference information generation unit
When the genre information associated with the position information at the time indicated in the product purchase history is different from the genre information associated with the product, the genre information associated with the product is used for the user The mobile communication device according to claim 2, wherein the mobile communication device generates preference information. The preference information generation unit
Select genre information that has accumulated more than a predetermined number of genre information of the same type within a predetermined period,
The video selection unit
The mobile communication device according to claim 1, wherein video data related to the genre information selected by the preference information generation unit is selected. The video selection unit
5. The digest video data of the selected video data is acquired, and video selection information indicating whether or not to acquire the video data is output to a video data storage device. 6. Mobile communication device.   The video selection information includes any one of acquiring all of the video data, acquiring a part of the video data, or not acquiring the video data. Mobile communication device. The position information acquisition unit
Obtaining at least one of address information set based on GPS (Global Positioning System) information of the user or destination information of the user determined from schedule registration information as position information corresponding to the user's behavior, Item 7. The mobile communication device according to any one of Items 1 to 6. The information extraction unit includes:
The mobile communication device according to claim 1, wherein the genre information is extracted by using position information where the user has stayed for a predetermined time or longer. The position information acquisition unit
The mobile communication device according to claim 1, wherein position information corresponding to the user's behavior within a predetermined time is acquired. Obtaining location information according to user behavior;
Extracting the genre information according to the position information using a database having genre information associated with the position information;
Generating the user's preference information based on the genre information accumulated within a predetermined period;
Selecting video data based on the preference information.

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