JP2009253915A - Content presentation system, content distribution system, output device, and mobile terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To present contents such as an animation by using output devices appropriately set in a town or the like. <P>SOLUTION: The content presenting system 1 includes a content distribution system 2, content cache devices 30 arranged at prescribed positions, and mobile terminals 40. The content distribution system 2 distributes contents to the content cache devices 30 depending on positions of the mobile terminals 40. The content cache device 30 establishes near radio communication between it and the mobile communication terminal 40, receives output timing information showing timing indicating from which place the contents may be outputted via the near radio communication, and displays the contents concerning the outputted timing information. Also, the content cache device 30 transmits the outputted timing information showing timing indicating which the contents have been outputted via near radio communication. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a content presentation system that presents content to a user, and a content distribution system, an output device, and a mobile terminal included in the content presentation system.

Conventionally, when a portable terminal carried by a user approaches an information distribution apparatus installed in a city or in a building, information is distributed from the information distribution apparatus to the portable terminal by short-range wireless communication, and the information is presented to the user. A known system is known (see, for example, Patent Document 1).
JP 2005-268842 A

  By applying the short-range wireless communication function of the mobile terminal described above, contents such as advertisements can be presented to the user as follows. A display device is provided in the city or in a building, and when a portable terminal carried by the user approaches the display device and short-range wireless communication is established, the content is displayed and presented to the user. Since the display size of the display device as described above is not limited as in the mobile terminal, the content can be presented to the user more effectively.

  However, the above technique may be inappropriate for displaying content such as a moving image that requires a predetermined time for display to the user. In other words, since the user is not always near the display device installed in the city or in a building, the content cannot be presented to the user in such a case.

  The present invention has been made in order to solve the above-described problems. Content such as a moving image that requires a predetermined time for output is transmitted to a user using an output device that is appropriately installed in a city or a building. An object of the present invention is to provide a content presentation system, a content distribution system, and a mobile terminal that can be presented.

  In order to achieve the above object, a content presentation system according to the present invention includes a content distribution system, a plurality of output devices connected to the content distribution system installed at a predetermined position, and a portable terminal. The content distribution system includes a content storage unit that stores in advance content that requires a predetermined time for output, a location information acquisition unit that acquires location information indicating a location of the mobile terminal, and location information Based on the location information of the mobile terminal acquired by the acquisition unit, an output device specifying unit that specifies an output device that is a content distribution destination, and an output device that is a content distribution destination specified by the output device specifying unit Content delivery means for delivering the content stored by the content storage means, The output device establishes near field communication between the content receiving unit that receives the content distributed from the content distribution system, the content holding unit that holds the content received by the content receiving unit, and the portable terminal. Short-range communication means; output information receiving means for receiving output timing information indicating the timing of output of content from a portable terminal through short-range communication established by the short-range communication means; and output information receiving means When the output timing information is received, the content output means for outputting the content held by the content holding means at the timing related to the output timing information, and the portable information through the short distance communication established by the short distance communication means. The content output means Output information transmission means for transmitting output timing information indicating the timing of how far the content has been output, and the mobile terminal establishes short-range communication with the output device; The output information receiving means for receiving the output timing information indicating the timing of the content output by the output apparatus from the output device through the short distance communication established by the distance communication means, and the output information receiving means When short distance communication is established between the output information holding means for holding the output timing information and the output device by the short distance communication means, the output information is held for the output device through the short distance communication. Based on the output timing information held in the means, the output indicating the timing of where the content is output from Output information transmitting means for transmitting force timing information.

  Each component of the content presentation system according to the present invention has a particularly novel configuration. That is, the content distribution system according to the present invention is a content distribution system including a content distribution system, a plurality of output devices connected to the content distribution system installed at a predetermined position, and a mobile terminal. A content storage unit that stores in advance a content that requires a predetermined time for output, a location information acquisition unit that acquires location information indicating the location of the mobile terminal, and a mobile phone acquired by the location information acquisition unit Based on the location information of the terminal, the output device specifying means for specifying the output device as the content distribution destination and the output device as the content distribution destination specified by the output device specifying means are stored by the content storage means. Content distribution means for distributing the content that has been processed To.

  The output device according to the present invention is an output device in a content presentation system including a content distribution system, a plurality of output devices connected to the content distribution system installed at a predetermined position, and a mobile terminal. A content receiving unit that receives content that is distributed from the content distribution system and requires a predetermined time for output, a content holding unit that holds the content received by the content receiving unit, and a portable terminal Short-range communication means for establishing short-range communication, and output information receiving means for receiving timing information for output indicating timing from which content is output from a portable terminal through short-range communication established by the short-range communication means And output timing information is received by the output information receiving means. The content output means outputs the content held by the content holding means at the timing related to the output timing information, and the content output means outputs the content to the portable terminal through the short-range communication established by the short-range communication means. Output completed information transmitting means for transmitting output completed timing information indicating the timing of how much has been output.

  Moreover, the portable terminal which concerns on this invention is a portable terminal in the content presentation system comprised including a content delivery system, the some output device connected to the said content delivery system installed in the predetermined position, and a portable terminal. Content that requires a predetermined time for output from the output device through the short-range communication means for establishing short-range communication with the output device and the short-range communication established by the short-range communication means. Output information receiving means for receiving output timing information indicating the timing of how much has been output, output information holding means for holding output timing information received by the output information reception means, and short-range communication means When short-range communication is established with the output device, output is made to the output device through the short-range communication. Based on the output completion timing information held in the completion information holding means, characterized in that it comprises an output information transmission means for transmitting the output timing information indicating the timing to output from where the content and.

  In the present invention, content is distributed from the content distribution system to the output device according to the position of the mobile terminal. Specifically, the content is distributed to an output device located in the vicinity of the mobile terminal. When a user who has a portable terminal approaches the output device, short-range communication is established between the output device and the portable terminal, and content is output from the output device. The content is output at a timing related to the output timing information after the output timing information is transmitted from the portable terminal to the output device. When content is output by the output device, output timing information is transmitted from the output device to the portable terminal. The output timing information is based on the output timing information.

  With the configuration of the present invention as described above, content that requires a predetermined time for output is continuously presented to the user as a series of content on different output devices according to the position of the user. That is, according to the present invention, content such as a moving image that requires a predetermined time for output can be presented to the user using an output device that is appropriately installed in a city or a building.

  The output device specifying unit of the content distribution system specifies an output device from which content is deleted based on the position information of the mobile terminal acquired by the position information acquiring unit, and the content distribution unit of the content distribution system uses the specifying unit to The output device that deletes the identified content is instructed to delete the content, and the content receiving unit of the output device receives the instruction to delete the content from the content distribution system and is held in the content holding unit It is desirable to delete the content. According to this configuration, only content that can be output is held in the output device, and the present invention can be implemented efficiently.

  The content distribution means of the content distribution system distributes content corresponding to the mobile terminal, and the output information receiving means of the output device receives mobile terminal information identifying the mobile terminal from the mobile terminal, and outputs the content of the output device The means outputs the content corresponding to the mobile terminal based on the mobile terminal information received by the output information receiving means, and the output information transmitting means of the mobile terminal specifies the terminal for the output device. It is desirable to send specific information. According to this configuration, since content according to the user is provided, the content can be presented to the user more appropriately.

  The content storage means of the content distribution system stores a plurality of contents, the content distribution means of the content distribution system distributes a plurality of contents, and the output information receiving means of the output device receives a plurality of contents from the portable terminal Content information specifying content from the content is received, the content output means of the output device outputs the content based on the content information received by the output information receiving means, and the output information transmission means of the portable terminal is: It is desirable to transmit content information to the output device. According to this configuration, content specified from among a plurality of content is provided, so that the content can be presented to the user more appropriately.

  The content storage unit of the content distribution system stores security information for preventing impersonation, eavesdropping, or tampering through near field communication established by the near field communication unit, and the position information acquisition unit of the content distribution system includes: The security information is distributed to the mobile terminal, the content distribution unit of the content distribution system distributes the security information to the output device, and the short-range communication unit of the output device encrypts the output timing information based on the security information, The transmitted output timing information is transmitted to the portable terminal through the short-range communication established by the short-range communication means, and the short-range communication means of the portable terminal secures the encrypted output timing information received from the output device. Decoding based on information, short-range communication means of portable terminal , The output timing information is encrypted based on the security information, and the encrypted output timing information is transmitted to the output device through the short-range communication established by the short-range communication means. It is desirable to decrypt the encrypted output timing information received from the mobile terminal based on the security information.

  According to this configuration, since the eavesdropping of the user ID is prevented, the privacy of the user location information can be protected. In addition, according to this configuration, it is possible to prevent impersonation of the user and to prevent eavesdropping on the information, so that it is possible to provide information limited to a specific user, and in addition to the output timing information, a fee is charged or granted. Content information can be presented to the user. Further, according to this configuration, since impersonation of the user is prevented and information falsification is prevented, charging can be performed based on the fact that the mobile terminal has received the charged or entitled content information.

  In the configuration of the present invention, content that requires a predetermined time for output is continuously presented to the user as a series of content on different output devices according to the position of the user. That is, according to the present invention, content such as a moving image that requires a predetermined time for output can be presented to the user using an output device that is appropriately installed in a city or a building.

  Hereinafter, preferred embodiments of a content presentation system according to the present invention and a content distribution system, an output device, and a mobile terminal included in the content presentation system will be described in detail with reference to the drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 shows a configuration of a content presentation system 1 according to the present embodiment. As shown in FIG. 1, the content presentation system 1 includes a content distribution system 2, a plurality of content cache devices 30, and a mobile communication terminal 40. The content presentation system 1 is a system in which content distributed from the content distribution system 2 is output by the content cache device (CC device) 30 and presented to the user 50 who owns the mobile communication terminal 40.

  The content distribution system 2 includes a content distribution server 10 and an HLR (Home Location Register) 20. The content distribution server 10 and the HLR 20 are connected to each other via a cable and can transmit and receive information. The content distribution server 10 and the HLR 20 are provided in the mobile communication network N. Each of the content distribution servers 10 stores content presented in the content presentation system 1 and distributes the content to the content cache device 30.

  As shown in FIG. 2, the content distribution server 10 is a data transmission / reception device such as a central processing unit (CPU) 101, a random access memory (RAM) 102 and a read only memory (ROM) 103, which are main storage devices, and a network card. The communication module 104 and a computer including hardware such as an auxiliary storage device 105 such as a hard disk are configured. When these components operate, the above-described and later-described functions of the content distribution server 10 are exhibited.

  The HLR 20 is a device that manages user information such as a telephone number and an identification number of a mobile communication terminal connected to the mobile communication network N. Further, the HLR 20 holds information on the location where the mobile communication terminal is located based on location registration from the mobile communication terminal (information indicating the location registration area). The hardware configuration similar to that of the above-described content distribution server 10 of the HLR 20 is performed, and the functions of the HLR 20 described above and later will be exhibited when each component operates.

  The content cache device 30 is an output device that receives content from the content distribution server 10, outputs the content, and presents it to the user. The content cache device 30 is connected to the content distribution server 10 by wire or wireless, and can transmit / receive information including content to / from the content distribution server 10. Specifically, the content is output by displaying the content on a display device included in the content cache device 30. Further, the output is not necessarily limited to display, and any output that can be presented to the user, such as audio output, may be used.

  The content cache device 30 is installed at a predetermined position in the city or in a building. Specifically, the content cache device 30 corresponds to a digital signage (a display device used in the city), a digital display mirror, a personal computer, and a vending machine. The above digital display mirror is a device that can display digital data on a mirror surface. Conventionally, a place with a mirror, for example, a beauty salon, a clothing store, a toilet or elevator in a building or public building, and a home. It can be provided in various places. Note that the specific device of the content cache device 30 is not limited to the above device, and any device can be used as long as it is a device capable of screen display and voice reading. Further, the content cache device 30 is not limited to the above location, and can be installed at an arbitrary location.

  By providing the content cache device 30 in various places, as shown in FIG. 1, on the flow line R of the user 50 such as the commuting route from the company where the user 50 works to the home (in the vicinity of the flow line R). In this state, a plurality of content cache devices 30 exist. In addition, a plurality of content cache devices 30 are assigned device IDs that can be uniquely specified, and are stored in the own device 30.

  As shown in FIG. 3, the content cache device 30 displays a CPU 301, a RAM 302 and a ROM 303 which are main storage devices, a communication module 304 which is a data transmission / reception device such as a network card, an auxiliary storage device 305 such as a hard disk, and a content display. The computer is configured as a computer including hardware such as the display unit 306 and the short-range wireless communication unit 307. When these components operate, the above-described and later-described functions of the content cache device 30 are exhibited.

  The mobile communication terminal 40 is a portable terminal such as a cellular phone that is carried and carried by the user 50. The mobile communication terminal 40 can connect to the mobile communication network N and perform mobile communication. As shown in FIG. 1, the mobile communication terminal 40 performs position registration with respect to the mobile communication network N (of the HLR 20) in accordance with the position registration area A where the terminal is located. Although only one mobile communication terminal 40 is depicted in the present embodiment, the content presentation system 1 normally includes a plurality of mobile communication terminals 40 for each user.

  As shown in FIG. 4, the mobile communication terminal 40 includes hardware such as a CPU 401, a RAM 402, a ROM 403, an operation unit 404, a wireless communication unit 405, a display 406, an antenna 407, and a short-range wireless communication unit 408. When these components operate, the above-described and later-described functions of the mobile communication terminal 40 are exhibited.

  Subsequently, an example of content to be presented to the user in the present embodiment will be described with reference to FIG. Content requires a predetermined time for output. Specifically, the content is a moving image (video), audio, or the like. The video includes one in which the display of a still image is switched at regular intervals and one in which text is sequentially displayed. For example, as shown in FIG. 5, an image is displayed, and the display is switched (at the timings t1 and t2 from t0) at regular intervals from the display start (t0) (the elapsed time from t0). Display ends at t3).

  The content is, for example, an advertisement or news for promoting a product as shown in FIG. As shown in FIG. 5, the content can include user-specific information such as the name of the user 50 (“Mr. A”). Also, user-specific data such as the user's schedule can be used as the content. In addition, when it is set as the content which outputs a user's peculiar data, it is made to output with the content cache apparatus 30 provided in the own room, the hotel room, the toilet, etc., and can be seen by an unspecified number of people. It is desirable not to output where possible.

  Subsequently, the function according to the present embodiment of each of the devices 10 to 40 included in the content presentation system 1 will be described with reference to FIG. As shown in FIG. 6, the content distribution server 10 includes a content storage unit 11 and a content distribution unit 12.

  The content storage unit 11 is content storage means for storing in advance the content presented to the user. The content storage unit 11 stores a plurality of contents, and each content is assigned a content ID for specifying the content. The content stored in the content storage unit 11 is input to the content storage unit 11 in advance by an administrator of the content distribution server 10 (content distribution system 2), a content provider, or the like.

  The content storage unit 11 stores a user ID for specifying the mobile communication terminal 40 and security information for preventing impersonation, eavesdropping, or tampering through short-range communication established by the short-range communication means. Security information is assigned to each ID. The security information stored in the content storage unit 11 is input to the content storage unit 11 in advance by an administrator of the content distribution server 10 (content distribution system 2), a content provider, or the like.

  Each security information includes a secret key and an encryption key generation algorithm for generating a temporary encryption key for performing authentication, concealment, and correctness confirmation in short-range communication.

  Further, the content storage unit 11 is a means for performing a location registration process, based on the security information corresponding to the user ID input from the HLR 20, and a temporary ID composed of a temporary ID, a secret key, and a validity confirmation key. Generate security information.

  The content distribution unit 12 is a content distribution unit that acquires the content and temporary security information stored in the content storage unit 11 and distributes the content and the temporary security information to the content cache device 30. is there. The content cache device 30 serving as a content distribution destination is specified (determined) by the HLR 20 according to the position of the mobile communication terminal 40 and notified from the HLR 20 to the content distribution server 10 as will be described later.

  Further, the content distribution unit 12 distributes content and security information corresponding to the mobile communication terminal 40. The content distribution unit 12 holds a distribution content management database that stores information for determining content to be distributed. Specifically, the distribution content management database stores information using the table shown in FIG. These pieces of information are input to the content distribution unit 12 in advance by the administrator of the content distribution server 10 (content distribution system 2), the content provider, or the like. As shown in FIG. 7, in the distribution content management database, content distributed to be presented to the user of the mobile communication terminal 40 is specified in the user ID that is information (mobile terminal information) specifying the mobile communication terminal 40. Content IDs to be associated are stored. For example, the telephone number of the mobile communication terminal 40 is used as the user ID. A plurality of content IDs may be associated with one user ID.

  Each content ID is associated with information indicating the type of the content and information about the length (reproduction length) of the content. The information indicating the type of content includes information indicating whether the content is content common to all users (“content common to all users”) or content specific to each user (“user individual content”). included. In addition, information indicating the content (such as “news”, “advertisement”, “weather forecast”, “schedule data”, and “privacy information”) is also associated with the content ID as content type information.

  The content distribution unit 12 is notified of the user ID from the HLR 20 together with the content cache device 30 that is the content distribution destination, refers to the distribution content management database, and temporarily stores the content ID associated with the user ID and the content ID. Get security information. The content distribution unit 12 acquires the content assigned with the content ID from the content storage unit 11 and performs distribution. When there are a plurality of content IDs associated with the user ID, the content distribution unit 12 distributes the plurality of contents assigned with the content ID to the content cache device 30.

  Further, the content distribution unit 12 instructs the content cache device 30 to delete the distributed content. Specifically, the content distribution unit 12 transmits a control signal for deleting content to the content cache device 30. As will be described later, the content cache device 30 that is the target of content deletion is specified (determined) by the HLR 20 according to the position of the mobile communication terminal 40 and notified from the HLR 20 to the content distribution server 10. The content distribution unit 12 also specifies the content to be deleted by referring to the distribution content management database based on the user ID, similarly to the content to be distributed. The content distribution unit 12 includes the identified content ID of the content to be deleted in the control signal for deleting the content.

  The content is deleted in order to efficiently use the memory of the content cache device 30 by erasing the content that no longer needs to be presented from the content cache device 30.

  Further, the content distribution unit 12 may store in advance personal information such as the name of the user 50 for editing the content in association with the user ID, and distribute it to the content cache device 30 together with the content.

  As shown in FIG. 6, the HLR 20 includes a location registration unit 21 and an output device identification unit 22.

  The location registration unit 21 is means for performing location registration processing related to the mobile communication network N with the mobile communication terminal 40. The location registration unit 21 receives a location registration request from the mobile communication terminal 40 and stores information related to location registration in the location management database shown in FIG. In the location management database, the user ID of the mobile communication terminal 40 and information indicating the location registration area where the mobile communication terminal 40 is located are stored in association with each other. The location registration process itself by the location registration unit 21 is the same as the conventional location registration process.

  The information indicating the location registration area where the mobile communication terminal 40 is located is location information indicating the location of the mobile communication terminal 40. That is, the position registration unit 21 is position information acquisition means for acquiring position information indicating the location of the mobile communication terminal 40. The location registration unit 21 outputs the acquired user ID and information indicating the location registration area to the output device specifying unit 22.

  The location registration unit 21 notifies the content distribution server 10 of the user ID input from the location registration unit 21 by means for performing location registration processing.

  The location registration unit 21 notifies the mobile communication terminal 40 of the temporary security information input from the content distribution server 10 by means for performing location registration processing.

  The output device specifying unit 22 is an output device specifying unit that specifies the content cache device 30 serving as a content distribution destination based on information indicating the location registration area of the mobile communication terminal 40 input from the location registration unit 21. . The output device specifying unit 22 holds a content cache device management database in which information for specifying the content cache device 30 that is a content distribution destination is stored. Specifically, the content cache device management database stores information using the table shown in FIG. As shown in FIG. 9, in the content cache device management database, information indicating the content cache device 30 is stored in association with information indicating the location registration area. Information indicating the content cache device 30 may be associated with information indicating one location registration area. The content cache device 30 associated with the location registration area is installed in the location registration area. When the user 50 having the mobile communication terminal 40 is located in the location registration area, the user may approach the content cache device 30 associated with the location registration area. These pieces of information are input to the output device specifying unit 22 in advance by an administrator of the HLR 20 (content distribution system 2) based on the positional relationship between the location registration area and the content cache device 30.

  The output device specifying unit 22 refers to the content cache device management database and acquires information indicating the content cache device 30 associated with the information indicating the location registration area input from the location registration unit 21. The output device specifying unit 22 specifies the content cache device 30 indicated by the acquired information as the content cache device 30 that is the content distribution destination, and notifies the content distribution server 10 of the information. The output device specifying unit 22 also notifies the content distribution server 10 of the user ID input from the location registration unit 21 at the time of the notification.

  Further, the output device specifying unit 22 specifies an output device from which content is to be deleted based on information indicating the location registration area of the mobile communication terminal 40 input from the location registration unit 21. When the information indicating the location registration area of the mobile communication terminal 40 is input from the location registration unit 21, the output device specifying unit 22 associates the information with the information indicating the previous location registration area of the mobile communication terminal 40. Information indicating the content cache device 30 is obtained. The output device specifying unit 22 specifies the content cache device 30 indicated by the acquired information as the content cache device 30 that deletes the content, and notifies the content distribution server 10 of the information. The previous location registration area is the location registration area where the mobile communication terminal 40 was previously registered, and the output device specifying unit 22 stores information indicating the location registration area. deep. If there is a content cache device 30 common to the content cache device 30 associated with the current location registration area and the content cache device 30 associated with the previous location registration area, the content cache device 30 It is assumed that the device 30 is neither a distribution target nor a deletion target.

  Specifically, for example, as shown in FIG. 1, the mobile communication terminal includes the content cache devices 30a, 30b, 30c, and 30d (located in association with the content cache devices 30a, 30b, 30c, and 30d) in the location registration area Aa. Assume that 40 are in the area. In this state, content corresponding to the mobile communication terminal 40 is stored in the content cache devices 30a, 30b, 30c, and 30d. Therefore, the mobile communication terminal 40 newly registers a location in the location registration area Ab including the content cache devices 30c, 30e, and 30f. In this case, content corresponding to the mobile communication terminal 40 is distributed to the content cache devices 30e and 30f included only in the newly registered location registration area Ab. A content deletion instruction corresponding to the mobile communication terminal 40 is given to the content cache devices 30a, 30b, and 30d included only in the location registration area Aa that has been previously registered. Neither content distribution nor deletion instructions are given to the content cache device 30c included in both the location registration areas Aa and Ab.

  In addition, when the mobile communication terminal 40 is newly located in the mobile communication network N, the output device specifying unit 22 performs only the process of specifying the content cache device 30 of the distribution destination, and the mobile communication terminal 40 is connected to the mobile communication network. When it is no longer in N, the output device specifying unit 22 performs only the processing for specifying the content cache device 30 to be deleted.

  As shown in FIG. 6, the content cache device 30 includes a content receiving unit 31, a content holding unit 32, a short-range communication unit 33, an output information receiving unit 34, a content output unit 35, and an output information transmission unit. 36.

  The content receiving unit 31 is a content receiving unit that receives content distributed from the content distribution server 10. The content receiving unit 31 inputs the received content to the content holding unit 32.

  In addition, the content receiving unit 31 receives an instruction to delete content from the content distribution server 10 and deletes the content held by the content holding unit 32. Specifically, the content receiving unit 31 receives a control signal for deleting the content from the content distribution server 10 and deletes the content with the content ID included in the control signal.

  The content holding unit 32 is a content holding unit that holds (caches) the content received and input by the content receiving unit 31. The content is held, for example, by storing the content on a memory included in the content cache device 30.

  The near field communication unit 33 is a near field communication unit that establishes near field communication with the mobile communication terminal 40. The short-range wireless communication is automatically established when the mobile communication terminal 40 enters the short-range wireless communication communication area. It is desirable that the communication area be within a range where the content can be presented to the user by the output of the content by the content cache device 30, specifically about several meters. Although short-distance wireless communication is optional, it is desirable to use ZigBee from the viewpoint of communication area, ease of application, and the like. In addition, Bluetooth (Bluetooth), RFID (Radio Frequency IDentification), etc. may be used.

  The short-range communication unit 33 performs encryption and decryption based on temporary security information input from the content distribution server 10 for short-range wireless communication with the mobile communication terminal 40.

  The output information receiving unit 34 is an output information receiving unit that receives output information necessary for outputting content from the mobile communication terminal 40 through short-range wireless communication established by the short-range communication unit 33. The output information includes output timing information indicating the timing at which the content is output from. Specifically, the output timing information is, for example, information on the time since the output of the content was started. The output information includes the user ID of the mobile communication terminal 40. The output information includes content information that identifies content output by the content cache device 30. The content information includes information indicating the content type of “content common to all users” or “user individual content” described above, a content ID for uniquely specifying the content, and the like. The content information may be optional (that is, it may not be included in the output information).

  The output information may include browsing history information as information comprehensively including the above-described information. The browsing history includes the content ID of the content that was output last time, the device ID that is information for identifying the content cache device 30 that output the previous content, and information (time stamp) that indicates how far the previous content was output. It is. The output information receiving unit 34 outputs the received output information to the content output unit 35. The type stamp is used as timing information for output, which is the timing at which the content is output at the time point described above.

  The content output unit 35 is a content output unit that outputs the content held by the content holding unit 32 based on the output information when the output information is input from the output information receiving unit 34. The content output unit 35 determines the content to be output based on the user ID of the mobile communication terminal 40 included in the output information and the content information. When the content ID of the output information includes a content ID, the content output unit 35 determines that the content related to the content ID is to be output.

  When the content information of the output information does not include the content ID, the content output unit 35 determines the content to be output based on the user ID and the content type information of the output information as follows, for example. The content output unit 35 holds information of a part corresponding to the user ID in the distribution content management database of the content distribution server 10. This information may be stored in advance in the content cache device 30 as with the content distribution server 10, or may be transmitted from the content distribution server 10 to the content cache device 30 together with the content distribution.

  The content output unit 35 refers to the information in the distribution content management database and acquires the content ID corresponding to the user ID. In addition, when the output information includes content type information in addition to the user ID, the acquired content ID corresponds to the type specified by the type information. When the acquired content ID is one, it is determined as the content to output the content related to the content ID. When there are a plurality of acquired content IDs, the content related to any of the content IDs is determined according to a predetermined rule (for example, random or output order) stored in advance in the content output unit 35. It is determined as content to be output.

  The content output unit 35 acquires the content specified as described above from the content holding unit 32. The content output unit 35 outputs the acquired content at the timing indicated by the output timing information included in the output information. Further, the content output unit 35 can insert the name of the user 50 (displayed as “Mr. A” shown in FIG. 5) and the like into the content based on the user ID. In addition, when there is a browsing history, the content output unit 35 can include the location name previously browsed from the device ID in the content.

  The content output unit 35 notifies the output information transmission unit 36 of information on how far the content has been output simultaneously with the output of the content. Specifically, the content output unit 35 notifies the output information transmission unit 36 of information indicating the elapsed time from the beginning of the content being output as the above information.

  When the short-range wireless communication established by the short-range communication unit 33 is disconnected, the content output unit 35 ends the content output.

  The output information transmission unit 36 transmits output timing information indicating the timing of the content output by the content output unit 35 to the mobile communication terminal 40 through the short-range wireless communication established by the short-range communication unit 33. To do. The output completion information transmission unit 36 transmits the information (time stamp) notified from the content output unit 35 as output completion timing information. For example, in the case of the content shown in FIG. 2, the output completion information transmission unit 36 indicates the timing at the start of display of the image while the first image is displayed (between the display start t0 and t1). While the information (t0) is displayed (between t1 and t2) while the second image is displayed, information (t1) indicating the timing at the start of displaying the image is displayed. Information (t2) indicating the timing of starting the display of the image during the period (between t2 and t3), the timing when the display of the third image is completed (timing when the display of the content is completed) Information indicating timing (t3 = fin, information indicating completion of content output) is transmitted as output timing information. Further, the information itself notified from the content output unit 35 may be transmitted as output timing information. Moreover, transmission of the output timing information from the output information transmission part 36 to the mobile communication terminal 40 is performed at regular intervals (for example, 1 second).

  The output completion information transmission unit 36 transmits the output completion timing information to the mobile communication terminal 40 as content browsing history information. The output information transmission unit 36 includes the browsing history information including the device ID of the content cache device 30 outputting the content (that is, the own device 30) and the content ID of the output content. Transmit to the terminal 40.

  As shown in FIG. 6, the mobile communication terminal 40 includes a mobile communication unit 41, a short-range communication unit 42, an output information reception unit 43, an output information holding unit 44, and an output information transmission unit 45. Configured.

  The mobile communication unit 41 is means for connecting to the mobile communication network N and performing mobile communication. As a function of mobile communication, the mobile communication unit 41 is newly located in the location registration area of the mobile communication network N (when the mobile communication network 41 enters the area from outside the mobile communication network N or when the power is turned off, etc.) ) Or a different location registration area, location registration is performed with respect to the mobile communication network N (of the HLR 20).

  The near field communication unit 42 is a near field communication unit that establishes near field communication with the content cache device 30. As described above, establishment of short-range wireless communication is automatically performed when the mobile communication terminal 40 enters the communication area of the short-range wireless communication. The short-range wireless communication method is the same as that of the content cache device 30. When the near field communication is established, the near field communication unit 42 notifies the output information transmitting unit 45 to that effect.

  The short-range communication unit 42 performs encryption and decryption based on the temporary security information input from the HLR 20 for short-range wireless communication with the content cache device 30.

  The output completed information receiving unit 43 receives the output completed timing information indicating the timing of the content output by the content cache device 30 from the content cache device 30 through the short range communication established by the short range communication unit 42. Information receiving means. The output timing information is received as included in the browsing history information as described above. The output information receiving unit 43 outputs the browsing history information including the received output timing information to the output information holding unit 44.

  The output information holding unit 44 is an output information holding unit that holds browsing history information including the output timing information input from the output information receiving unit 43. When the new browsing history information is input, the output completed information holding unit 44 overwrites the old browsing history information.

  When notified from the short-range communication unit 42 that the short-range wireless communication has been established, the output information transmitting unit 45 notifies the output information holding unit 44 to the content cache device 30 through the short-range wireless communication. This is an output information transmitting means for transmitting output timing information indicating the timing of output of the content based on the held output timing information. Specifically, the output information transmitting unit 45 acquires browsing history information held in the output information holding unit 44 and transmits the information to the content cache device 30 as output information. In that case, output timing information included in the browsing history information is used as output timing information. That is, the content is output from the content cache device 30 in which the short-range wireless communication has been established, from the continuation of the portion where the output is performed in any of the content cache devices 30. The output information includes the user ID of the terminal 40 as described above.

  Note that the output timing information is not necessarily output timing information. For example, the output information transmitting unit 45 may generate the output timing information with the timing slightly earlier than the timing indicated by the output timing information as the timing related to the output timing information. Here, the timing just before (for example, one second before) is stored in advance in the output information transmission unit 45. That is, the content is output from the content cache device 30 in which the short-range wireless communication is established slightly before the portion where the output is performed in any of the content cache devices 30.

  In addition, the output information transmission unit 45 may perform browsing according to a user's preset setting even if the output information holding unit 44 does not include a browsing history, or even if the output information holding unit 44 includes a browsing history. Information for output that is not a history may be transmitted. The output information in this case is information for specifying the content, and is information such as the content type such as “content common to all users” or “user individual content” described above, content ID, and the like. These pieces of information are held in the output information transmission unit 45 in a table as shown in FIG. 10, for example. The presetting by the user of information indicating the type of content and information such as a content ID is optional (optional).

  Subsequently, processing executed by the content presentation system 1 according to the present embodiment will be described with reference to the sequence diagrams of FIGS. First, processing at the time of content distribution will be described using the sequence diagram of FIG. 11, and then processing at the time of content output (presentation to the user) will be described using the sequence diagrams of FIGS.

  The mobile communication terminal 40 is assumed to be in the location registration area A of “Area 1”. In this state, content corresponding to the mobile communication terminal 40 has already been distributed and stored in the content cache device 30 included in the location registration area A of “Area 1”.

  When the user 50 carrying the mobile communication terminal 40 moves, the mobile communication terminal 40 moves from the location registration area A of “Area 1” to the location registration area A of “Area N”. Therefore, a location registration request for location registration in the location registration area A of “area N” is transmitted from the mobile communication unit 41 of the mobile communication terminal 40 to the mobile communication network N. In the mobile communication network N, the location registration request is received by the location registration unit 21 of the HLR 20 (S01). Subsequently, the location registration unit 21 of the HLR 20 notifies the content storage unit 11 of the content distribution server 10 of the user ID of the mobile communication terminal 40. Subsequently, temporary security information is notified to the location registration unit 21 of the HLR 20 by the content storage unit 11 of the content distribution server 10 (Sy1). Subsequently, the location registration unit 21 of the HLR 20 performs location registration processing for the mobile communication terminal 40 in response to the location registration request (S02). Through the location registration process, the location registration unit 21 of the HLR 20 notifies the mobile communication terminal 40 of location registration acceptance, and the location registration unit 21 of the HLR 20 notifies the short-range communication unit 42 of the mobile communication terminal 40 temporary security information. The Through the location registration process, the user ID of the mobile communication terminal 40 and the location registration area where the mobile communication terminal 40 is located are recognized by the location registration unit 21 of the HLR 20. Subsequently, the user ID and information indicating the location registration area are input from the location registration unit 21 to the output device identification unit 22.

  Subsequently, in the output device specifying unit 22, based on the information indicating the location registration area input from the location registration unit 21, the content cache device 30 that is a content distribution destination and the content cache device 30 from which the content is to be deleted. Are identified (S03). The content cache device 30 in “area 1” is specified as the content cache device 30 from which content is to be deleted, and the content cache device 30 in “area N” is specified as the content cache device 30 to which content is distributed. Subsequently, the specified content cache device 30 and the user ID input from the location registration unit 21 are notified from the output device specifying unit 22 to the content distribution server 10 (S04).

  Subsequently, in the content distribution server 10, the content distribution unit 12 receives the above information, and specifies the content (its content ID) to be distributed and deleted based on the user ID and the temporary security information ( S05). Subsequently, the content distribution unit 12 performs content distribution processing and deletion processing (S06). Specifically, a control signal for issuing a deletion instruction to the content cache device 30 is generated based on the specified content (its content ID), and the content distributed from the content storage unit 11 is acquired. The

  Subsequently, the content distribution unit 12 issues a content deletion instruction by transmitting a control signal to the content cache device 30 in “area 1” (S07). In the content cache device 30 in “area 1”, the content receiving unit 31 receives an instruction to delete the content, and the content held by the content holding unit 32 is deleted (S08).

  On the other hand, the content distribution unit 12 distributes (downloads) the content to the content cache device 30 in “area N” (S09). In the content cache device 30 in “area N”, the content receiving unit 31 receives the content, and the received content is stored (cached) by the content holding unit 32 (S10). Subsequently, temporary security information is notified from the content distribution unit 12 of the content distribution server 10 to the short-range communication unit 33 of the content cache device 30 by content distribution processing (Sy2). When content distribution and deletion instruction processing is performed, the content distribution unit 12 notifies the HLR 20 of that (S11).

  The above is the processing at the time of content distribution from the content distribution system 2 to the content cache device 30. Through the above processing, the content output (presented) to the user 50 is stored in the content cache device 30 near (around) the user 50 carrying the mobile communication terminal 40.

  Subsequently, processing when the content stored in the content cache device 30 is output will be described with reference to the sequence diagrams of FIGS. When the user 50 carrying the mobile communication terminal 40 moves, the mobile communication terminal 40 approaches the content cache device 30 included in the location registration area A of “area N”, and the short-range communication of the content cache device 30 is performed. It moves within the communication area of the short-range wireless communication of the unit 33 (S21).

  When the mobile communication terminal 40 enters the near field communication communication area of the near field communication unit 33 of the content cache device 30, the near field communication unit 42 of the mobile communication terminal 40 and the near field communication unit 33 of the content cache device 30. A short-range wireless communication connection is automatically established between and the encryption and decryption processing is started based on the temporary security information (S22).

  When the near field communication is established, the mobile communication terminal 40 notifies the output information transmitting unit 45 from the near field communication unit 42 to that effect. Subsequently, the output information transmitting unit 45 transmits the output information to the content cache device 30 (S23). As described above, when browsing history information is stored in the output completed information holding unit 44, the browsing history information is transmitted as output information. When browsing history information is not stored, information indicating a preset content type, content ID, and the like are transmitted as output information. If none of the above information is available, the fact (null) is transmitted as output information.

  In the content cache device 30, the output information receiving unit 34 receives the output information. The received output information is output from the output information receiving unit 34 to the content output unit 35. Subsequently, the content output unit 35 prepares for content output as follows (S24 to S31).

  First, the content output unit 35 determines whether the output information includes information indicating the type of content (S24). When it is determined that the information indicating the type of content is included, the information in the distribution content management database is referred to, and the content ID of the content output from the type specified by the information is specified. (S25).

  If it is determined that the information indicating the type of content is not included in the output information, it is subsequently determined whether or not the content ID is included in the output information other than the browsing history (S26). . When it is determined that the content ID is included, the content ID is specified as the content ID of the content to be output.

  If it is determined that the content information is not included in the output information, it is then determined whether or not browsing history information is included in the output information (S27). When it is determined that the browsing history information is included, the content ID included in the browsing history information is specified as the content ID of the output content.

  As described above (S25, S26, S27), when the content ID of the output content is specified, the content output unit 35 acquires the content corresponding to the content ID from the content holding unit 32 (S28). .

  Subsequently, in the case where browsing history information is included in the output information, the content (time stamp) indicating how far the content has been output is used as output timing information, and the content from the time indicated by the time stamp. The content is prepared so as to be output (S29).

  On the other hand, if it is determined in step S27 that the browsing information is not included in the output information, the content output unit 35 refers to the information in the distribution content management database and stores the content corresponding to the user ID. The content is newly selected at random, acquired from the content holding unit 32, and the output of the content is prepared (S30).

  Subsequently, as described above (S29, S30), the prepared content is edited by the content output unit 35 (S31). This editing is, for example, to insert the above-described name of the user 50 (displayed as “Mr. A” shown in FIG. 5) into the content.

  Next, as shown in FIG. 13, in the content cache device 30, the content is output by the content output unit 35 (S41). In the present embodiment, the video content shown in FIG. 5 is displayed from the timing t0 (the beginning of the content). The user 50 can view the content by outputting the content. When the content is output, information on how far the content has been output is notified from the content output unit 35 to the output information transmission unit 36.

  The output completion information transmitting unit 36 transmits output completion timing information that is information (time stamp) indicating how far the content has been output to the mobile communication terminal 40 through the short-range wireless communication. Specifically, the output timing information is included in browsing history information including the device ID of the content cache device 30 that outputs the content (that is, the device 30) and the content ID of the content that is output. Is transmitted (S42). As described above, the time stamp includes information (t0) indicating the timing at the start of display of the image while the first image is displayed (between display start t0 and t1), and the second image. While the image is displayed (between t1 and t2), information (t1) indicating the timing at the start of display of the image and during the display of the third image (between t2 and t3) ) Is information (t2) indicating the timing at the start of display of the image, and timing at which the display of the third image is ended (timing at which content display is completed) is information indicating the timing (t3 = fin, content Information that has been output).

  In the mobile communication terminal 40, browsing history information is received by the output information receiving unit 43 and stored in the output information holding unit 44 (S43).

  While the content is being output, transmission of browsing history information from the output information transmission unit 36 of the content cache device 30 is performed in the same manner as described above at a constant period T (S44, S46). In the mobile communication terminal 40, reception of browsing history information by the output information receiving unit 43 and storage by the output information holding unit 44 are performed in the same manner as described above according to transmission from the content cache device 30. (S45, S47).

  Here, when the user 50 carrying the mobile communication terminal 40 moves during the output of the content, the mobile communication terminal 40 moves away from the content cache device 30 and the short-range communication of the content cache device 30 is performed. The unit 33 moves outside the short-range wireless communication area (S48). When the mobile communication terminal 40 moves out of the short-range wireless communication communication area of the short-range communication unit 33 of the content cache device 30, the short-range communication unit 42 of the mobile communication terminal 40 and the short-range communication unit 33 of the content cache device 30. The short-distance wireless communication connection between and is disconnected due to the weak electric field, and the encryption and decryption processing is stopped based on the temporary security information (S49).

  When the near field communication is disconnected, the content cache device 30 notifies the content output unit 35 of the fact from the near field communication unit 33 and ends the output of the content. On the other hand, the mobile communication terminal 40 does not receive new browsing history information, so that the last received browsing history information is stored in the output information holding unit 44. In the example of FIG. 13, the browsing history including the time stamp t <b> 1 is stored in the output information holding unit 44.

  Thereafter, when the user 50 who carries the mobile communication terminal 40 moves, the mobile communication terminal 40 approaches the content cache device 30 included in the location registration area A of the “area N”, and is close to the content cache device 30. The distance communication unit 33 moves into the near field communication area (S51). Here, the content cache device 30 may be a device different from the content cache device 30 that has output the content (S41) or may be the same device.

  When the mobile communication terminal 40 enters the near field communication communication area of the near field communication unit 33 of the content cache device 30, the near field communication unit 42 of the mobile communication terminal 40 and the near field communication unit 33 of the content cache device 30. A short-range wireless communication connection is automatically established between the two and the encryption and decryption processing is started based on the temporary security information (S52).

  Similarly to the above, when the short-range wireless communication is established, the mobile communication terminal 40 notifies the output information transmission unit 45 from the short-range communication unit 42. Subsequently, the output information transmitting unit 45 transmits the output information to the content cache device 30 (S53). Here, the browsing history including the time stamp t1 is transmitted as output information.

  In the content cache device 30, as described above, the output information receiving unit 34 receives the output information, and the content output unit 35 prepares to output the content based on the received output information ( S54). Here, since the browsing history including the time stamp t1 is the output information, the same content as that output previously is prepared to be output from the timing of the time stamp t1.

  Subsequently, in the content cache device 30, the content is output from the timing t1 by the content output unit 35 (S55). The user 50 can see the continuation of the previously output content by outputting the content from the timing t1.

  When the content is output, information on how far the content has been output is notified from the content output unit 35 to the output information transmission unit 36, and the browsing history information including the time stamp is transmitted to the mobile communication terminal 40, as described above. (S56). In the mobile communication terminal 40, browsing history information is received by the output information receiving unit 43 and stored in the output information holding unit 44 (S57).

  As described above, according to the content presentation system 1 according to the present embodiment, continuous content (continuation) such as a moving image that requires a predetermined time for output continues in different content cache devices 30 according to the position of the user 50. Thus, it is presented to the user as a series of contents. Specifically, a plurality of content cache devices 30 set on the flow line of the user 50 output a continuation of the content output by another content cache device 30 so that one content can be appropriately displayed at different positions. It can be presented to the user 50 at any timing. That is, according to the content presentation system 1 according to the present embodiment, content such as a moving image that requires a predetermined time for output is presented to the user 50 using the content cache device 30 that is appropriately installed in a city or a building. can do.

  For example, in the case of advertising content as shown in FIG. 5, an image is output as a series of content rather than what is displayed to the user 50, so that more appealing content is presented to the user 50. Can do.

  Moreover, if the content is deleted from the content cache device 30 installed in a place where the user 50 is not located as in the present embodiment, only the content that can be output to the user 50 is included in the content cache device 30. So that the present invention can be implemented efficiently.

  Further, if the content corresponding to the user ID is output as in the present embodiment, the content corresponding to the user 50 is provided, so that the content can be presented to the user more appropriately. However, the content corresponding to the user 50 does not necessarily need to be provided, and the same content may be provided to all the users 50 (mobile communication terminals 40).

  Moreover, if a plurality of contents are prepared in advance as in the present embodiment and any one of the contents is provided, various contents can be easily provided to the user 50, and more appropriately. The content can be presented to the user. However, it is not always necessary to prepare a plurality of contents in advance, and a single content may be provided.

  In addition, if the user ID is prevented from being wiretapped as in this embodiment, the privacy of the user's location information can be protected. In addition, if the user's spoofing is prevented and information is prevented from being wiretapped, the information can be provided only to a specific user, and charged or rights-provided content information is presented to the user in addition to the output timing information. can do. In addition, if the user's spoofing is prevented and information falsification is prevented, it becomes possible to charge based on the fact that the mobile terminal has received the charged or rightful content information. However, it may be provided not only by encryption and decryption processing by temporary security information distribution using a secret key but also by encryption and decryption processing by a public key.

  In the present embodiment, the content distribution system 2 is configured to include the content distribution server 10 and the HLR 20, but the above functions may be realized by one device, or three or more. It may be realized by the apparatus.

  In the present embodiment, the method for acquiring the location information of the mobile communication terminal 40 uses the location registration function of the mobile communication network N, but is not necessarily limited to this method. For example, in a portable terminal, the position information of the terminal itself may be acquired by GPS (Global Positioning System), and the information may be sent to a content distribution system. In that case, in the content distribution system, the location information of the content cache device 30 is held in advance, and based on the location information of the mobile terminal and the location information of the content cache device 30 (for example, between the mobile terminal and the content cache device 30). The distance between them is equal to or less than a predetermined value), and the content cache device 30 that delivers the content can be specified.

  Further, short-range communication between the mobile communication terminal 40 and the content cache device 30 is not necessarily wireless because it is only necessary to recognize that the mobile communication terminal 40 is approaching the predetermined content cache device 30. There is no need and it may be wired.

It is a figure which shows the general-view structure of the content presentation system in embodiment of this invention. It is a figure which shows the hardware constitutions of the content delivery server in embodiment of this invention. It is a figure which shows the hardware constitutions of the content cache apparatus (output device) in embodiment of this invention. It is a figure which shows the hardware constitutions of the mobile communication terminal (portable terminal) in embodiment of this invention. It is a figure which shows the example of the content in embodiment of this invention. It is a figure which shows the function structure of each component of the content presentation system in embodiment of this invention. It is a figure which shows the delivery content management database in embodiment of this invention. It is a figure which shows the position management database in embodiment of this invention. It is a figure which shows the content cache apparatus management database in embodiment of this invention. In an embodiment of the present invention, it is a figure showing information about contents set up beforehand as information for output from a mobile communication terminal to a contents cache device. It is a sequence diagram which shows the process performed at the time of the delivery of content in the content presentation system in embodiment of this invention. It is a sequence diagram which shows the process performed at the time of the output (presentation) of a content in the content presentation system in embodiment of this invention. It is a sequence diagram which shows the process performed at the time of the output (presentation) of a content in the content presentation system in embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Content presentation system, 2 ... Content distribution system, 10 ... Content distribution server, 11 ... Content storage part, 12 ... Content distribution part, 20 ... HLR, 21 ... Location registration part, 22 ... Output device specific | specification part, 30 ... Content Cache device, 31 ... content receiving unit, 32 ... content holding unit, 33 ... near field communication unit, 34 ... output information receiving unit, 35 ... content output unit, 36 ... output information transmitting unit, 40 ... mobile communication terminal, DESCRIPTION OF SYMBOLS 41 ... Mobile communication part, 42 ... Short-distance communication part, 43 ... Output completed information receiving part, 44 ... Output completed information holding part, 45 ... Output information transmission part, 50 ... User, 101 ... CPU, 102 ... RAM, 103 ... ROM, 104 ... communication module, 105 ... auxiliary storage device, 301 ... CPU, 302 ... RAM, 303 ... ROM, 304 ... communication module 305 ... Auxiliary storage device, 306 ... Display unit, 307 ... Near field communication unit, 401 ... CPU, 402 ... RAM, 403 ... ROM, 404 ... Operation unit, 405 ... Wireless communication unit, 406 ... Display, 407 ... Antenna, 408: Near field communication unit.

Claims (19)

A content presentation system including a content distribution system, a plurality of output devices connected to the content distribution system installed at a predetermined position, and a mobile terminal,
The content distribution system includes:
Content storage means for storing in advance content that requires a predetermined time for output;
Position information acquisition means for acquiring position information indicating the location of the mobile terminal;
Output device specifying means for specifying the output device that is the distribution destination of the content based on the position information of the mobile terminal acquired by the position information acquiring means;
Content distribution means for distributing the content stored by the content storage means to the output device that is the distribution destination of the content specified by the output device specification means;
With
The output device is
Content receiving means for receiving the content distributed from the content distribution system;
Content holding means for holding content received by the content receiving means;
Short-range communication means for establishing short-range communication with the portable terminal;
Output information receiving means for receiving output timing information indicating the timing of outputting the content from the portable terminal through the short-range communication established by the short-range communication means;
Content output means for outputting the content held by the content holding means at a timing related to the output timing information when the output information receiving means receives the output timing information;
An output information transmitting means for transmitting output timing information indicating a timing of how far the content has been output by the content output means to the portable terminal through the short distance communication established by the short distance communication means;
With
The portable terminal is
Short-range communication means for establishing short-range communication with the output device;
An output information receiving means for receiving output timing information indicating a timing of how far the content has been output by the output device from the output device through short-range communication established by the short-range communication means;
An output information holding means for holding the output timing information received by the output information receiving means;
When near field communication is established with the output device by the near field communication unit, based on the output timing information held in the output information holding unit with respect to the output device through the near field communication. Output information transmission means for transmitting timing information for output indicating the timing from which the content is output;
A content presentation system comprising: The output device specifying means of the content distribution system specifies the output device from which the content is deleted based on the position information of the mobile terminal acquired by the position information acquiring means,
The content distribution unit of the content distribution system instructs the output device that deletes the content specified by the specifying unit to delete the content,
The content receiving unit of the output device receives an instruction to delete the content from the content distribution system, and deletes the content held in the content holding unit;
The content presentation system according to claim 1. The content distribution means of the content distribution system distributes the content according to the mobile terminal,
The output information receiving means of the output device receives mobile terminal information identifying the mobile terminal from the mobile terminal,
The content output means of the output device outputs the content according to the mobile terminal based on the mobile terminal information received by the output information receiving means,
The output information transmitting means of the portable terminal transmits terminal specifying information for specifying the own terminal to the output device,
The content presentation system according to claim 1, wherein the system is a content presentation system. The content storage means of the content distribution system stores a plurality of the contents,
The content distribution means of the content distribution system distributes the plurality of the contents;
The output information receiving means of the output device receives content information specifying content from the plurality of contents from the portable terminal,
The content output means of the output device outputs the content based on the content information received by the output information receiving means,
The output information transmitting means of the portable terminal transmits the content information to the output device;
The content presentation system as described in any one of Claims 1-3 characterized by the above-mentioned. The content storage means of the content distribution system stores security information for preventing impersonation or wiretapping or tampering through short-range communication established by the short-range communication means,
The position information acquisition means of the content distribution system distributes the security information to the mobile terminal,
The content distribution means of the content distribution system distributes the security information to the output device;
The near field communication unit of the output device encrypts the output timing information based on the security information, and the encrypted output timing information is transmitted through the near field communication established by the near field communication unit. Send it to your mobile device,
The short-range communication means of the portable terminal decrypts the encrypted output timing information received from the output device based on the security information,
The near field communication unit of the portable terminal encrypts the output timing information based on the security information, and the encrypted output timing information is transmitted through the near field communication established by the near field communication unit. To the output device,
The short-range communication means of the output device decrypts the encrypted output timing information received from the mobile terminal based on the security information.
The content presentation system as described in any one of Claims 1-4 characterized by the above-mentioned. A content distribution system in a content presentation system including a content distribution system, a plurality of output devices connected to the content distribution system installed at a predetermined position, and a mobile terminal,
Content storage means for storing in advance content that requires a predetermined time for output;
Position information acquisition means for acquiring position information indicating the location of the mobile terminal;
Output device specifying means for specifying the output device that is the distribution destination of the content based on the position information of the mobile terminal acquired by the position information acquiring means;
Content distribution means for distributing the content stored by the content storage means to the output device that is the distribution destination of the content specified by the output device specification means;
A content distribution system comprising: The output device specifying means specifies the output device from which the content is to be deleted based on the position information of the portable terminal acquired by the position information acquiring means,
The content distribution unit instructs the output device that deletes the content specified by the specifying unit to delete the content.
The content distribution system according to claim 6.   The content distribution system according to claim 6 or 7, wherein the content distribution unit distributes the content according to the mobile terminal. The content storage means stores a plurality of the contents,
The content distribution means distributes the plurality of contents.
The content distribution system according to any one of claims 6 to 8, wherein The content storage means of the content distribution system is provided with security information for preventing spoofing, wiretapping or tampering through near field communication established by near field communication means for establishing near field communication provided in the output device and the portable terminal. And store
The position information acquisition means of the content distribution system distributes the security information to the mobile terminal,
The content distribution means of the content distribution system distributes the security information to the output device;
The content distribution system according to any one of claims 6 to 9, characterized by the above. An output device in a content presentation system including a content distribution system, a plurality of output devices connected to the content distribution system installed at a predetermined position, and a mobile terminal,
Content receiving means for receiving content distributed from the content distribution system and requiring a predetermined time for output;
Content holding means for holding content received by the content receiving means;
Short-range communication means for establishing short-range communication with the portable terminal;
Output information receiving means for receiving output timing information indicating the timing of outputting the content from the portable terminal through the short-range communication established by the short-range communication means;
Content output means for outputting the content held by the content holding means at a timing related to the output timing information when the output information receiving means receives the output timing information;
An output information transmitting means for transmitting output timing information indicating a timing of how far the content has been output by the content output means to the portable terminal through the short distance communication established by the short distance communication means;
An output device comprising:   12. The output apparatus according to claim 11, wherein the content receiving unit receives an instruction to delete the content from the content distribution system, and deletes the content held in the content holding unit. The output information receiving means receives mobile terminal information identifying the mobile terminal from the mobile terminal,
The content output means outputs the content corresponding to the mobile terminal based on the mobile terminal information received by the output information receiving means,
The output device according to claim 11 or 12, characterized in that: The output information receiving means receives content information specifying content from the plurality of contents from the portable terminal,
The content output means outputs content based on the content information received by the output information receiving means,
The output device according to claim 11, wherein the output device is an output device. The short-range communication means of the output device encrypts the output timing information based on security information for preventing impersonation or wiretapping or tampering through short-range communication established by the short-range communication means, The encrypted output timing information is transmitted to the mobile terminal through the near field communication established by the near field communication unit,
The short-range communication means of the output device decrypts the encrypted output timing information received from the mobile terminal based on the security information.
The output device according to claim 11, wherein the output device is an output device. A mobile terminal in a content presentation system including a content distribution system, a plurality of output devices connected to the content distribution system installed at a predetermined position, and a mobile terminal,
Short-range communication means for establishing short-range communication with the output device;
Output completed information reception for receiving output timing information indicating the extent to which content requiring a predetermined time for output has been output by the output device from the output device through short-range communication established by the short-range communication means Means,
Outputted information holding means for holding the outputted timing information received by the outputted information receiving means;
When near field communication is established with the output device by the near field communication unit, based on the output timing information held in the output information holding unit for the output device through the near field communication. Output information transmission means for transmitting timing information for output indicating the timing from which the content is output;
A portable terminal comprising:   The output apparatus according to claim 16, wherein the output information transmitting means transmits terminal specifying information for specifying the terminal itself to the output apparatus.   The output device according to claim 16 or 17, wherein the output information transmitting unit of the portable terminal transmits content information specifying the content to the output device. The short-range communication means of the output device encrypts the output timing information based on security information for preventing impersonation or wiretapping or tampering through short-range communication established by the short-range communication means, The encrypted output timing information is transmitted to the mobile terminal through the near field communication established by the near field communication unit,
The short-range communication means of the mobile terminal decrypts the encrypted output timing information received from the output device based on the security information.
The output device according to any one of claims 16 to 18, wherein the output device is a device.

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