JP3820243B2 - Content distribution server, content distribution program, and computer-readable recording medium recording content distribution program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a content distribution server capable of timely distributing information suitable for the communication place of a user. <P>SOLUTION: A content distribution server 1 comprises a communication information collecting portion 104 for collecting time information which specifies a time when communication is performed with the terminal of a user and communication location information which identifies the position of the terminal at the time, a predicted location determining portion 108 for determining a location where the communication time of the terminal is the longest in a time zone, to which a predetermined delivery time belongs, as a predicted location for the terminal based on the time information and the communication location information, a content selecting portion 111 for selecting contents to be distributed to the terminal based on the predicted location determined, and a data distributing means 113 for distributing the selected contents to the terminal at the delivery time. <P>COPYRIGHT: (C)2005,JPO&amp;NCIPI

Description

  The present invention relates to a content distribution server, a content distribution program, and a computer-readable recording medium that records the content distribution program.

  Conventionally, when content such as voice and data is distributed from a content distribution server to a user terminal, the position of a distribution target terminal is predicted and distributed. If the terminal position is predicted and distributed in this way, information suitable for the position is transmitted.

For example, in the invention described in Patent Document 1, a technology is disclosed in which information is distributed by predicting a location registration area having a long residence time of a mobile communication terminal as the location of the terminal.
JP 2000-324246 A

  However, the above-described prior art has the following problems. In other words, since the history of the location registration area is collected regardless of the communication status by the mobile communication terminal, for example, it concentrates on information about the home, company, etc. In some cases, useful information cannot be distributed to the user.

  Therefore, the present invention has been made in view of the above problems, and a content distribution server, a content distribution program, and a content distribution program capable of distributing information suitable for a user's communication place in a timely manner are recorded. An object is to provide a computer-readable recording medium.

Content delivery server of the present invention includes a time information specifying the time at which the communication by the user of the terminal has been performed, a communication information collecting unit for collecting the communication position information specifying the position of the terminal at that time, is the collection Communication characteristic calculation means for calculating the probability that the user exists at a specific position for each time zone based on the time information and communication location information, and the time zone to which a predetermined distribution time belongs based on the calculated probability The position selection unit that determines the position with the longest communication time in the user's terminal as the predicted position related to the user's terminal, and the content selection that selects the content to be distributed to the user's terminal based on the determined predicted position Means and data delivery means for delivering the selected content to the user's terminal at the delivery time.

Content delivery program of the present invention, a computer, and the time information specifying the time at which the communication by the user of the terminal has been performed, the communication information collecting unit for collecting the communication position information specifying the position of the terminal at that time, the Based on the collected time information and communication position information, communication characteristic calculation means for calculating the probability that the user exists at a specific position for each time zone, and to which a predetermined distribution time belongs based on the calculated probability Predicted position determining means for determining the position with the longest communication time at the user terminal in the time zone as the predicted position related to the user terminal, and the content for selecting the content to be distributed to the user terminal based on the determined predicted position Selection means, as data delivery means for delivering the selected content to the user's terminal at the delivery time It is intended to function.

  The above-described content distribution program is recorded on a computer-readable recording medium on which the content distribution program of the present invention is recorded.

In such a content distribution server, the communication information collecting means collects information related to the time when the communication is performed by the user's terminal and the position of the terminal at the time of the communication , and the communication characteristic calculating means collects the communication information collecting means. On the basis of the time information and the communication position information, the probability that the user exists at a specific position is calculated for each time zone, and the predicted position determination unit is based on the probability calculated by the communication characteristic calculation unit. The position having the longest communication time in the time zone to which the specific distribution time belongs is determined as the predicted position, the content selection unit selects the content based on the determined predicted position, and the data distribution unit distributes the content . As a result, the content is distributed according to the communication place where the user exists with high accuracy. The same applies when the computer is operated using the content distribution program of the present invention and the content distribution program recorded on the recording medium of the present invention.

  The content distribution server further includes a communication unit determining unit that determines a communication unit for distributing content to the user's terminal based on the predicted position determined by the predicted position determining unit. It is preferable that the content is distributed using the determined communication means.

  With such a configuration, the communication means determination means determines the communication means according to the predicted position of the user, and the data distribution means distributes the content using the determined communication means. In this case, for example, if the possibility of being outdoors is high, the mobile communication network is used. If the possibility of being near the wireless LAN hotspot is high, the communication method using the Internet is used. It is possible to perform content distribution using a high communication means.

  The content distribution server further includes a distribution history storage unit that stores a content type related to the content distributed to the user's terminal by the data distribution unit, and distribution time information regarding a time when the content was distributed, Content type determining means for determining the content type with the longest distribution time for the user terminal based on the content type and the distribution time information as the distribution content type related to the user, and the content selection means It is also preferable to select content from the content to which it belongs.

  In this case, the distribution history storage unit stores the past content distribution history to the user's terminal, and the content type determination unit has the maximum distribution time in the time zone to which the distribution time belongs based on the content distribution history. Since the content type is determined, and the content selection unit selects the content belonging to the content type, optimal content distribution corresponding to the temporal change in the user's taste is realized.

  According to the content distribution server of the present invention, the time at which communication is performed by the user's terminal and the information on the position of the terminal at the time of communication are collected, and the position where the communication time is the longest in the time zone to which the specific distribution time belongs Is determined as a predicted position, content is selected based on the determined predicted position, and the content is distributed. As a result, the content is distributed according to the place where the user is highly likely to exist at the time of communication. As a result, it is possible to provide a content distribution server that can distribute information suitable for a user's communication location in a timely manner.

  Embodiments of the present invention will be described with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected to the same element and the overlapping description is abbreviate | omitted.

[First embodiment]
FIG. 1 is a schematic configuration diagram showing a first embodiment of a content distribution server according to the present invention. The content distribution server 1 according to the present embodiment includes a mobile phone 201 via a mobile communication network 301, a PDA (Personal Digital Assistants) terminal 202 via the Internet 302, and a tag reader device 40 via a dedicated network 303. Each is configured to be able to transmit and receive data. The tag reader device 40 is for reading / writing data from / to an RFID (Radio Frequency Identification) tag 204 built in a PHS (Personal Handyphone System) terminal 203. Hereinafter, each component will be described in detail.

  The mobile phone 201 is a user terminal that receives content distribution, and is wirelessly connected to a base station (not shown), which is one of the components of the mobile communication network 301, so that the mobile communication network This is an information communication terminal capable of sending and receiving e-mails by packet data communication together with other equipment connected to 301.

  The PDA terminal 202 is a terminal used by the same user as the user who owns the mobile phone 201, and is a so-called portable small personal computer. The PDA terminal 202 has a LAN access function and a wireless LAN access function by infrared communication, and is thereby connected to the Internet 302 via a wireless LAN base unit, and IP to / from other equipment connected to the Internet 302. Packet data communication using (Internet Protocol). Further, the PDA terminal 202 is configured to be able to transmit and receive voice calls and e-mails using VoIP by transmitting and receiving packet data.

  Further, each of the mobile phone 201 and the PDA terminal 202 is equipped with a WEB browser, and data communication by HTTP using packet data communication is possible. In this case, the mobile phone 201 and the PDA terminal 202 periodically request content distribution request data (details) to the content distribution server 1 in order to realize pseudo-push type content distribution from the content distribution server 1. Also has a function of automatically transmitting (described later).

  Similarly, the PHS terminal 203 is a terminal used by the same user as the user who owns the mobile phone 201, and has an RFID tag 204 built therein. In the RFID tag 204, ID information for specifying the PHS terminal 203 is recorded. This ID information can be read by the tag reader device 40 using non-contact wireless communication at a short distance. In addition, when data is written from the tag reader device 40, the PHS terminal 203 operates to display information indicated by the data on the display.

  The tag reader device 40 is a device for reading data from the RFID tag 204 and writing data to the RFID tag 204 by non-contact wireless communication. When the ID information is read from the RFID tag 204 when the PHS terminal 203 is approached, the tag reader device 40 has a function of adding the reader ID information for specifying the tag reader device 40 and transmitting it to the content distribution server 1. When the tag reader device 40 receives data from the communication I / F 103 (details will be described later) of the content distribution server 1, the tag reader device 40 operates to write the data to the RFID tag 204.

  The wireless LAN base unit 50 is a wireless transceiver called a so-called access point, and is used to connect the PDA terminal 202 to the Internet 302 by transmitting and receiving wirelessly with the PDA terminal 202.

  The content distribution server 1 is a server system that distributes content to a user's terminal via a network. The content distribution server is physically configured as a computer system including a CPU (central processing unit), a memory, an input device such as a mouse and a keyboard, a display device such as a display, and a storage device such as a hard disk.

Functional components of the content distribution server 1 include communication I / Fs 101, 102, and 103, a communication information collection unit 104 (communication information collection unit), a communication characteristic calculation unit 105 (communication characteristic calculation unit) , and request reception. Unit 106, distribution management unit 107, predicted position determining unit 108 (predicted position determining unit), communication unit determining unit 109 (communication unit determining unit), content type determining unit 110 (content type determining unit), content Selection unit 111 (content selection unit), data conversion unit 112, data distribution unit 113, protocol conversion unit 114, user information storage unit 121, distribution history storage unit 122 (distribution history storage unit), communication history A storage unit 123, a communication characteristic storage unit 124, a schedule information storage unit 125, a communication means information storage unit 126, a content rating And a storage unit 127. Hereinafter, these components will be described in detail.

  Communication I / Fs 101, 102, and 103 are portions that directly transmit and receive data to and from the mobile communication network 301, the Internet 302, and the dedicated line network 303. The communication I / Fs 101, 102, and 103 convert between digital signals handled in the respective networks and digital signals handled in the content distribution server 1.

  The communication information collection unit 104 identifies time information for identifying the time at which communication is performed by the user's terminal from the mobile communication network 301 and the Internet 302, communication position information for identifying the position of the terminal at that time, and communication. It is a part that collects communication information including communication means information that sometimes identifies the communication means used by the user. Here, “use” means that the user transmits / receives data to / from other equipment connected to the mobile communication network 301 or the Internet 302 by the mobile phone 201 or the PDA terminal 202. The communication information collection unit 104 collects communication information related to communication performed by the mobile phone 201 from the mobile communication network 301 via the communication I / F 101. The communication information in this case further includes a telephone number that identifies the mobile phone 201. As communication location information included in this communication information, information for identifying a base station that performs wireless communication with the mobile phone 201 is collected, and the communication information collection unit 104 converts the information into a communication location ID related to the installation location of the base station. . When the mobile phone 201 straddles communication areas of a plurality of base stations during communication, communication information is collected by being separated into communication portions with the respective base stations.

  Further, the communication information collection unit 104 collects communication information related to communication performed by the PDA terminal 202 from the Internet 302 via the communication I / F 102. The communication information in this case further includes an IP telephone number or manufacturing apparatus number for specifying the PDA terminal 202. The communication location information included in this communication information includes information identifying the wireless LAN base unit 50 that accommodates the PDA terminal 202 or the wireless LAN gateway facility (not shown) that accommodates the PDA terminal 202. Then, the communication information collection unit 104 converts the information into communication position IDs related to the installation locations. When the PDA terminal 202 straddles communication areas of a plurality of wireless LAN base units during communication, the communication information is collected by being separated into communication portions with the respective wireless LAN base units.

  The “communication means” in the communication means information collected by the communication information collection unit 104 is a combination of a network type and a terminal application used when a user performs communication using the mobile phone 201 or the PDA terminal 202. means. For example, examples of communication means used by a user include “mobile communication network + WEB browser”, “mobile communication network + e-mail transmission / reception function”, “mobile communication network + voice call function”, “Internet + WEB browser”. "Internet + e-mail transmission / reception function", "Internet + VoIP voice call function", and the like. Hereinafter, “mobile communication network + WEB browser” is “mobile phone WEB”, “mobile communication network + email transmission / reception function” is “mobile mail”, “mobile communication network + voice call function” is “mobile voice”, “ “Internet + WEB browser” will be described as “Internet WEB”, “Internet + electronic mail transmission / reception function” will be described as “Internet mail”, and “Internet + VoIP voice call function” will be described as “Internet voice”.

  Note that the communication information collection unit 104 receives operation logs from the mobile phone 201 and the PDA terminal 202, and the communication information is collected from facilities such as the mobile communication network 301 and the exchange 302 and the gateway in the Internet 302. It is collected by receiving.

  Further, the communication information collection unit 104, through the communication I / F 103, ID information read by the tag reader device 40 from the RFID tag 204, read time information for specifying the read time, and reader ID for specifying the tag reader device 40. RFID information including information is collected. The communication information collection unit 104 converts the reader ID information into a communication position ID related to the installation location of the tag reader device 40. Then, the communication information collection unit 104 stores the collected communication information regarding the mobile phone 201 and the PDA terminal 202 and the RFID information read by the tag reader device 40 in the communication history storage unit 123.

  FIG. 2 shows an example of a configuration diagram of data stored in the communication history storage unit 123 in this way. According to the example of FIG. 2, the communication start time “2003/5/30 20:11:40”, which is time information, and the communication end time are used as the communication information of the user of the mobile phone 201 identified by the user ID “12345”. Data including “2003/5/30 20:12:50”, an event “mobile phone WEB” which is communication means information, and a communication location ID “10000001” which is communication location information are stored. From such data, the content distribution server 1 grasps the past communication usage status of the user. At the same time, as the RFID information of the user of the PHS terminal 203 identified by the user ID “12345”, the communication start time “2003/5/29 10:12:20” which is the reading time information and the RFID information are indicated. Data including an event “RFID tag detection” and a communication position ID “10000002” which is communication position information is stored. With such data, the content distribution server 1 grasps the movement history of the user.

  Note that the communication information collection unit 104 refers to the user information storage unit 121 that stores information on the user of the content distribution server 1 in order to identify the user ID from the telephone number of the mobile phone 201 included in the communication information. FIG. 3 shows an example of a configuration diagram of data stored in the user information storage unit 121. As shown in FIG. 3, the user information storage unit 121 includes a mobile phone number “090-XXXX-XXXX” of the mobile phone 201 and an IP phone number of the PDA terminal 202 as information on users who use the content distribution server 1. “050-XXXX-XXXX”, RFID tag ID “XXXXXXXX” as ID information of the RFID tag 204, telephone number “070-XXXX-XXXX” of the PHS terminal 203, and mail address “XXX1 @ XX” of the mobile phone 201 .XX ”and the mail address“ XXX2@XX.XX ”of the PDA terminal 202 are stored in association with the user ID“ 12345 ”. For example, after receiving the communication information including the telephone number “090-XXXX-XXXX”, the communication information collection unit 104 refers to the data in the user information storage unit 121 and identifies this communication information with the user ID “12345”. The communication information is stored in the communication history storage unit 123 together with the user ID. Similarly, the communication information collection unit 104 determines to which user the RFID information belongs.

The communication characteristic calculation unit 105 is a part that calculates the probability that the user exists at each position for each time zone based on the user time information and communication position information stored in the communication history storage unit 123. More specifically, the communication characteristic calculation unit 105 extracts the communication information stored in the communication history storage unit 123 for each time period, and calculates the total communication time T1 _tot . Thereafter, the extracted communication information is grouped for each specific group (communication position group) of the communication position ID which is the communication position information. Then, for each grouped communication information, using the communication time T1 calculated from the communication start time and the communication end time, the existence probability P1 in the corresponding time zone in the communication position group is calculated by the following equation (1). In this way, for a specific user, the existence probability P1 is calculated for every time zone and each communication location group. Here, the existence probability P1 may be calculated for all users indicated by the data stored in the user information storage unit 121, or only for users who intend to distribute content.

In addition, the communication characteristic calculation unit 105 includes a content type included in the user's content distribution history stored in the distribution history storage unit 122, a distribution start time and a distribution end time that are distribution time information regarding the time when the content is distributed. Based on the above, the distribution probability for each content type to which the content distributed to the user's terminal belongs for each time period is calculated. FIG. 4 shows an example of a configuration diagram of data stored in the distribution history storage unit 122. According to the example of FIG. 4, in response to a content distribution request using the communication means “mobile WEB” from the user specified by the user ID “12345”, the distribution start time “2003” is sent to the user terminal. / 5/30 20:11:40 "to the end of distribution" 2003/5/30 20:12:50 "Content belonging to the content type" Game information "uses the communication means" Mobile audio " It means that it was delivered. The communication characteristic calculation unit 105 extracts the content distribution history stored in the distribution history storage unit 122 for each time period, and calculates the total distribution time T2 _tot . Thereafter, the extracted content distribution history is grouped for each content type. Then, for each grouped content distribution history, using the communication time T2 calculated from the distribution start time and the distribution end time, the distribution probability P2 of the content type is calculated by the following equation (2). In this way, for a specific user, the distribution probability P2 is calculated for every time zone and content type. Here, the existence probability P2 may be calculated for all users indicated by the data stored in the user information storage unit 121 or only for users who intend to distribute content.

  The communication characteristic calculation unit 105 sets the communication position group having the maximum existence probability P1 and the content type having the maximum distribution probability P2 as the predicted position information and the candidate content type for each user and time zone. Stored in 124. FIG. 5 shows an example of a configuration diagram of data stored in the communication characteristic storage unit 124 in this way. According to the example of FIG. 5, the communication location group “A town” with the existence probability “30%” and the candidate content type “stock price information” with the distribution probability “10%” have the user ID “12345” and the time zone “ 6:00 to 7:00 ". Based on these data, the content distribution server 1 determines the location where the user is highly likely to be located and the type of content having a high distribution frequency in a specific time zone. It should be noted that regarding the time zone when the communication information or the content distribution history data does not exist, the existence probability and predicted position information data, or the distribution probability and candidate content type data are set to NULL.

  The request receiving unit 106 is a part that receives content distribution request data from the mobile phone 201 and the PDA terminal 202 via the protocol conversion unit 114. This request data includes voice data by mobile communication using the communication means “portable voice”, voice data by VoIP using the communication means “Internet voice”, HTTP using the communication means “Internet WEB” or “portable WEB”. Is once received by the protocol conversion unit 114 as text data. The request reception unit 106 receives the request data converted into a protocol readable by the protocol conversion unit 114, and identifies the user who has requested the content distribution from the request data. After receiving the request data, the request receiving unit 106 outputs a user ID for identifying the user to the predicted position determining unit 108.

  The distribution management unit 107 is a part that manages a schedule in which the content distribution server 1 actively distributes content by a so-called push method. For this purpose, the distribution management unit 107 refers to the schedule information storage unit 125 continuously. FIG. 6 shows an example of a configuration diagram of data stored in the schedule information storage unit 125. As illustrated in FIG. 6, the schedule information storage unit 125 stores data of the distribution time “6:30” for the user ID “12345”. The distribution management unit 107 continuously refers to such data, and outputs the user ID to the predicted position determination unit 108 when the current time is the distribution time.

  Here, when the content distribution server 1 performs pseudo push-type content distribution using the communication means “mobile WEB” or “Internet WEB” to the mobile phone 201 or the PDA terminal 202, Behaves like First, the request receiving unit 106 receives periodic request data automatically transmitted from the mobile phone 201 or the WEB browser of the PDA terminal 202. At the reception timing, the distribution management unit 107 refers to the schedule information storage unit 125 and manages the distribution schedule by the method described above. As a result, content is actively distributed from the content distribution server 1 to the terminal without requiring the user's operation of the mobile phone 201 or the PDA terminal 202.

  Based on the time information and communication position information collected by the communication information collection unit 104, the predicted position determination unit 108 determines the position of the user with the longest communication time in the user's terminal in the time zone to which the distribution time belongs, It is a part determined as a predicted position related to the terminal. The distribution time here is determined as the time when the user ID is output from the request receiving unit 106 or the distribution management unit 107. More specifically, when the user ID is output from the request receiving unit 106 or the distribution management unit 107, the predicted position determination unit 108 searches the communication characteristic storage unit 124 based on the user ID and sets the distribution time to the time. Obtain predicted position information about the user included in the band. Then, the predicted position determination unit 108 determines the position indicated by the predicted position information as the predicted position at the delivery time, and outputs it to the communication means determination unit 109 together with the user ID. When the predicted position information in the corresponding time zone is NULL, the process is stopped and the process waits for the next content distribution process.

  The communication means determination unit 109 is a part that determines communication means for distributing content to the user's terminal in the time zone to which the distribution time belongs based on the predicted position determined by the predicted position determination unit 108. More specifically, when the user ID and the predicted position information are output from the predicted position determining unit 108, the communication means determining unit 109 searches the communication means information storage unit 126 based on the user ID and the predicted position information. Then, candidate communication means and next candidate communication means suitable for the predicted position related to the user are acquired. FIG. 7 is an example of a configuration diagram of data stored in the communication means information storage unit 126. According to the example of FIG. 7, the candidate communication means “mobile WEB” and the next candidate communication means “Internet WEB” related to the location information “A town” are stored in association with the user ID “12345”. For example, when the predicted position determination unit 108 outputs the user ID “12345” and the predicted position information “A town”, the communication unit determination unit 109 refers to the communication unit information storage unit 126 and selects the candidate communication unit “ The mobile phone WEB "and the next candidate communication means" Internet WEB "are acquired. Then, the communication means determination unit 109 outputs the acquired candidate communication means as the distribution communication means to the content type determination unit 110 together with the user ID, the next candidate communication means, and the predicted position information.

  Further, the communication means determination unit 109 also transmits information of the determined distribution communication means to the tag reader device 40 via the communication I / F 103. Thereafter, the tag reader device 40 writes the information of the communication means for distribution on the RFID tag 204 using non-contact wireless communication and displays it on the display of the PHS terminal 203, so that the user can distribute the content in a timely manner. It becomes possible to know the communication means to be used.

  Based on the content type and distribution time information stored in the distribution history storage unit 122, the content type determination unit 110 determines the content type with the longest distribution time for the user terminal in the time zone to which the distribution time belongs to the user at the distribution time. This is a part to be determined as the distribution content type. More specifically, when the user ID is output from the communication means determination unit 109, the content type determination unit 110 searches the communication characteristic storage unit 124 based on the user ID and includes the distribution time in the time zone. The candidate content type related to the user is acquired. Then, the content type determination unit 110 determines the acquired candidate content type as the distribution content type at the distribution time related to the user specified by the user ID, and predicts position information, communication means for distribution, next candidate communication means, and user It outputs to content selection part 111 with ID. When the candidate content type in the corresponding time zone is NULL, the default content type set in advance for the user is acquired as the distribution content type.

  The content selection unit 111 selects the user according to the predicted position determined by the predicted position determination unit 108, the distribution communication unit determined by the communication unit determination unit 109, and the distribution content type determined by the content type determination unit 110. This is a part for selecting content to be distributed to the terminal. First, the content selection unit 111 refers to index data indicating the content stored in the content storage unit 127. FIG. 8 shows an example of a configuration diagram of index data stored in the content storage unit 127. According to the example shown in FIG. 8, the content type “stock price information” indicating the type of content, the distribution position information “A town” indicating the location where the content is distributed, the “text” indicating the data format of the content, The content data size “20 MB” is stored in association with the content file name “content A”. The content selection unit 111 extracts index data whose distribution position information matches the predicted position information and whose content type matches the distribution content type from such data. For example, when the distribution content type is “stock price information” and the predicted position information is “A town”, index data whose content type is “stock price information” and the distribution position information is “A town”. Extract. Then, the content selection unit 111 refers to the communication history storage unit 123, searches for data including the communication means for distribution as an event from the data of the corresponding user including the distribution time in the time zone, and calculates the average distribution time from the data. Is calculated. Furthermore, the content selection unit 111 extracts index data having a data size that can fit within the average distribution time. The distribution bit rate for calculating the distribution time from the data size is predicted to be an appropriate value from the communication means for distribution. The content selection unit 111 acquires the content of the file name of the extracted index data from the content storage unit 127 and outputs it to the data conversion unit 112 together with the distribution communication unit, the next candidate communication unit, and the user ID.

  The data conversion unit 112 is a part that converts the content output from the content selection unit 111 into a data format corresponding to the communication means for distribution. For example, when the communication means for distribution is “mobile mail” and the data format of the content is “speech”, the content is converted into a data format of “text”. Specifically, the data conversion unit 112 sets the data format of the content to “text” if the distribution communication means is “mobile mail” or “Internet mail”, and the distribution communication means to “mobile WEB” or “ If it is “Internet WEB”, it is converted to “WEB page format”, and if the communication means for distribution is “portable voice” or “Internet voice”, it is converted to “voice”. The data conversion unit 112 outputs the converted content to the data distribution unit 113 together with the distribution communication unit, the next candidate communication unit, and the user ID.

  The data distribution unit 113 sets the content selected by the content selection unit 111 using the distribution communication unit determined by the communication unit determination unit 109 using the time when the user ID is output from the data conversion unit 112 as the distribution time. This is the part that is delivered to the user's terminal. The data distribution unit 113 includes a voice response unit 113a, a mail response unit 113b, and a WEB server unit 113c. The voice response unit 113a sends voice to the mobile phone 201 or the PDA terminal 202, which is a user terminal, when the distribution communication means is a communication means using voice data such as “mobile voice” and “Internet voice”. Send content in data format. When the communication means for distribution is a communication means by electronic mail such as “mobile mail” or “Internet mail”, the mail response unit 113b sends a text to the mobile phone 201 or the PDA terminal 202 which is a user terminal. Send data format content as e-mail. When the communication means for distribution is an HTTP communication means such as “mobile WEB” or “Internet WEB”, the WEB server unit 113c sends text data to the mobile phone 201 or the PDA terminal 202 which is a user terminal. WEB page format content that is image data or composite data thereof is transmitted. The content transmission destination is acquired by referring to the user information storage unit 121 based on the user ID output from the data conversion unit 112. Further, the data distribution unit 113 determines that the next candidate communication unit is used when the distribution communication unit is other than the electronic mail and the reception response is not returned from the mobile phone 201 or the PDA terminal 202 within a certain time after the content is transmitted. In addition, it has a function of repeating the content selection and distribution processing again. Upon receiving a reception response after the content is distributed, the data distribution unit 113 stores the content distribution history in the distribution history storage unit 122.

  The protocol conversion unit 114 converts the content transmitted from the data distribution unit 113 into a protocol suitable for the distribution communication unit, and transmits it to the mobile communication network 301 and the Internet 302 via the communication I / Fs 101 and 102. Part. Further, the protocol conversion unit 114 receives the content distribution request data transmitted from the mobile phone 201 and the PDA terminal 202, converts it into a protocol that can be read by the content distribution server 1, and outputs it to the request reception unit 106. Also do.

  Subsequently, an operation of the content distribution server 1 according to the present embodiment will be described, and a content distribution method according to the embodiment of the present invention will be described. FIG. 9 is a sequence diagram showing an operation at the time of communication characteristic calculation of the content distribution server 1 according to the present embodiment. FIG. 10 shows an operation when the content distribution server 1 according to the present embodiment actively distributes content. FIG. 11 is a sequence diagram illustrating an operation when the content distribution server 1 according to the present embodiment performs content distribution in response to a request from the terminal.

  First, the operation at the time of calculating the communication characteristics of the content distribution server will be described with reference to FIG.

  First, communication information regarding the user is periodically transmitted from the mobile communication network 301 and the Internet 302 to the content distribution server 1. When the ID information is read by the tag reader device 40, the RFID information is transmitted from the tag reader device 40 to the content distribution server 1 (step S01).

  The communication information collection unit 104 collects the transmitted communication information and RFID information (step S02). Then, the user ID is added to these data and stored in the communication history storage unit 123 (step S03).

  Thereafter, the communication characteristic calculation unit 105 calculates the existence probability for each communication location group of the user and the distribution probability for each content type as follows (steps S04 to S10). First, the communication characteristic calculation unit 105 extracts communication information related to the user stored in the communication history storage unit 123, and totals the communication time for each time zone (step S04). Then, from the extracted communication information, the communication time for each specific group and time zone of the communication position ID which is the communication position information is totaled (step S05). The existence probability for each communication position group and time zone of the user is calculated from the above-described total result (step S06).

  Furthermore, the communication characteristic calculation unit 105 extracts the distribution history for the user stored in the distribution history storage unit 122, and totals the distribution time for each time zone (step S07). Then, from the extracted distribution history, the distribution time for each content type and time zone, which is information related to the content type, is totaled (step S08). The distribution probability for each user's content type and time zone is calculated from the above-mentioned total result (step S09).

  And the communication characteristic calculation part 105 determines whether calculation of existence probability and distribution probability was performed about all the users (Step S10), and when not performed about all users (Step S10; NO) ), Steps S04 to S09 are repeated. If calculation is performed for all users as a result of the determination (step S10; YES), based on the calculated existence probability and distribution probability, the predicted position information and the candidate content type for each user ID and time zone Is stored in the communication characteristic storage unit 124 (step S11).

  Next, the operation when the content distribution server 1 actively distributes content will be described with reference to FIG.

  First, the distribution management unit 107 of the content distribution server 1 periodically refers to the schedule information storage unit 125 to acquire a content distribution schedule related to the user (step S21). Then, the distribution management unit 107 determines whether or not the current time is a distribution time in the schedule (step S22). As a result, when the current time is not the distribution time (step S22; NO), the process is terminated, and the process is suspended until the next timing. On the other hand, when the current time is the delivery time (step S22; YES), the user ID of the user is output to the predicted position determination unit 108, and the predicted position determination unit 108 determines the communication characteristics based on the user ID. The storage unit 124 is referred to (step S23).

  Then, the predicted position determination unit 108 determines the position indicated by the predicted position information including the delivery time in the time zone as the predicted position (step S24). Thereafter, the communication means determination unit 109 determines the distribution communication means by referring to the communication means information storage unit 126 based on the predicted position (step S25). The communication means determination unit 109 notifies the user of the PHS terminal 203 by transmitting information on the determined communication means for distribution to the RFID tag 204 via the tag reader device 40 (step S26). Next, the content type determination unit 110 refers to the communication characteristic storage unit 124 based on the user ID, acquires the distribution content type including the distribution time in the time zone, and determines the distribution content type for the content to be distributed. (Step S27). Then, the content selection unit 111 determines that the distribution position information is the predicted position information, the content type is the distribution content type, and the data size is in accordance with the predicted position, the communication means for distribution, and the distribution content type. Content that fits within the average distribution time is selected and acquired (step S28). Then, the data conversion unit 112 converts the data format of the acquired content into a data format corresponding to the distribution communication means (step S29).

  Next, the data distribution unit 113 transmits the converted content to the mobile phone 201 or the PDA terminal 202 using the distribution communication unit (step S30). On the other hand, when the content is transmitted normally, the mobile phone 201 or the PDA terminal 202 returns a content reception response (step S31). After receiving the reception response, the data distribution unit 113 stores the distribution history of the transmitted content in the distribution history storage unit 122 (step S32).

  Here, the data distribution means 113 determines whether or not a reception response is returned within a predetermined time from the mobile phone 201 or the PDA terminal 202 (step S33), and when it is not returned (step S33; NO), The processes in steps S28 to S32 described above are repeated for the next candidate communication unit. On the other hand, when the reception response is returned (step S33; YES), the process is terminated and the process is suspended until the next delivery time.

  Next, the operation when the content distribution server 1 performs content distribution in response to a request from the terminal will be described with reference to FIG.

  First, request data for requesting content distribution is transmitted from the mobile phone 201 or the PDA 202 to the content distribution server 1 (step S41). The request receiving unit 106 of the content distribution server 1 receives the request data and outputs a user ID that identifies the user to the predicted position determining unit 108 (step S42). Thereafter, the content is distributed in exactly the same manner as the operations in steps S23 to S33 in FIG. 10 (steps S43 to S53).

  Next, a content distribution program according to an embodiment of the present invention and a computer-readable recording medium (hereinafter simply referred to as a recording medium) on which the content distribution program is recorded will be described. Here, the recording medium causes a state of change in energy such as magnetism, light, electricity, etc., corresponding to the description content of the program to the reading device provided in the hardware resource of the computer, and corresponds to it. The contents of the program description can be transmitted to the reading device in the form of a signal. Examples of such a recording medium include a magnetic disk, an optical disk, a CD-ROM, and a memory built in a computer. FIG. 12 is a configuration diagram of a recording medium according to the embodiment of the present invention. As shown in FIG. 12, the recording medium 9 includes a program area 91 for recording a program. In this program area 91, a content distribution program 90 is recorded. The content distribution program 90 includes a main module 901 that supervises processing, a communication I / F module 902, a communication information collection module 903, a communication characteristic calculation module 904, a request reception module 905, a distribution management module 906, A predicted position determination module 907, a communication means determination module 908, a content type determination module 909, a content selection module 910, a data conversion module 911, a data distribution module 912, and a protocol conversion module 913 are configured. . Here, a communication I / F module 902, a communication information collection module 903, a communication characteristic calculation module 904, a request reception module 905, a distribution management module 906, a predicted position determination module 907, a communication means determination module 908, a content type determination module 909, The functions realized by operating each of the content selection module 910, the data conversion module 911, the data distribution module 912, and the protocol conversion module 913 are the communication I / Fs 101, 102, 103 of the content distribution server 1, the communication information collection unit 104, communication characteristic calculation unit 105, request reception unit 106, distribution management unit 107, predicted position determination unit 108, communication means determination unit 109, content type determination unit 110, content selection unit 111, data conversion unit 11 , Data distribution unit 113 is similar to the protocol conversion unit 114 of each function. In this case, the user information storage unit 121, the distribution history storage unit 122, the communication history storage unit 123, the communication characteristic storage unit 124, the schedule information storage unit 125, the communication means information storage unit 126, and the content storage of the content distribution server 1 are stored. Each of the units 127 includes a user information storage unit 921, a distribution history storage unit 922, a communication history storage unit 923, a communication characteristic storage unit 924, a schedule information storage unit 925, and a communication means information storage unit 926 in the data area 92 of the recording medium 9. And it may be stored as the content storage unit 926 or may be stored in another recording medium.

  Then, the effect of the content delivery server concerning this embodiment is demonstrated. According to the content distribution server 1 configured as described above, the communication information collection unit 104 collects information about the time when communication is performed by the user's terminal and the position of the terminal at the time of communication, and the predicted position determination unit 108 Determines the position having the longest communication time in the time zone to which the specific distribution time belongs as the predicted position, the content selection unit 111 selects the content based on the determined predicted position, and the data distribution unit 113 selects the content. To deliver. As a result, the content is distributed according to the place where the user is highly likely to exist at the time of communication.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. FIG. 13 is a schematic configuration diagram showing a second embodiment of the content distribution server according to the present invention. The configuration of the content distribution server 2 in the present embodiment does not include the distribution history storage unit 122 and the content type determination unit 110 as compared to the configuration of the content distribution server 1 in the first embodiment, and the acquisition of position information The difference is that a unit 153 and a content information storage unit 162 are newly provided. Since the other basic configuration is the same as that of the content distribution server 1, the same reference numerals are given to the components having the same function, and the description thereof will be omitted. Differences from the first embodiment will be described below. Detailed description.

The communication characteristic calculation unit 151 is a part that calculates the probability that the user exists at each position for each time zone based on the user time information and communication position information stored in the communication history storage unit 123. More specifically, the communication characteristic calculation unit 105 extracts the communication information stored in the communication history storage unit 123 for each time period, and calculates the total communication time T1 _tot . Thereafter, the extracted communication information is grouped for each specific group (communication position group) of the communication position ID which is the communication position information. Then, for each grouped communication information, using the communication time T1 calculated from the communication start time and the communication end time, the existence probability P1 in the corresponding time zone in the communication position group is calculated by Equation (1). In this way, the existence probability P1 is calculated for every user, time zone, and communication position group.

  Thereafter, the communication characteristic calculation unit 151 stores, for each user and time zone, the communication position group having the maximum existence probability P1 in the communication characteristic storage unit 161 as predicted position information. FIG. 14 shows an example of a configuration diagram of data stored in the communication characteristic storage unit 161 in this way. According to the example of FIG. 14, the predicted position information “A city residential area” with the existence probability “30%” is stored in association with the user ID “12345” and the time zone “9: 00-10: 00”. . Based on these data, the content distribution server 2 determines where there is a high probability that the user is located in a specific time zone.

  The request reception unit 152 is a part that receives content distribution request data from the mobile phone 201 and the PDA terminal 202 via the protocol conversion unit 114. This request data includes voice data by mobile communication using the communication means “portable voice”, voice data by VoIP using the communication means “Internet voice”, HTTP using the communication means “Internet WEB” or “portable WEB”. Is once received by the protocol conversion unit 114 as text data. The request reception unit 106 receives the request data converted into a protocol readable by the protocol conversion unit 114, and identifies the user who has requested the content distribution from the request data. Further, the request data includes content group information for specifying a group of content that the user desires to distribute, and preference information indicating the user's preference. After receiving the request data, the request reception unit 106 outputs a user ID for identifying the user, content group information, and preference information to the position information acquisition unit 153.

  The position information acquisition unit 153 is a part that acquires terminal position information indicating the position of the user's terminal at the time of content distribution. More specifically, when the user ID is output from the request reception unit 106 or the distribution management unit 107, the position information acquisition unit 153 refers to the user information storage unit 121 and acquires the RFID tag ID. Then, RFID information including the RFID tag ID is received from the tag reader device 40 via the communication I / F 103. Thereby, the content distribution server 2 acquires the terminal position information at the time of user distribution. The position information acquisition unit 153 outputs the reader ID information included in the RFID information as terminal position information to the predicted position determination unit 108 together with the user ID, content group information, and preference information. When the RFID information including the corresponding RFID tag ID cannot be received from the tag reader device 40, the position information acquisition unit 153 outputs only the user ID, the content group information, and the preference information to the predicted position determination unit 108.

  Based on the time information and communication position information collected by the communication information collection unit 104, the predicted position determination unit 154 determines the position of the user with the longest communication time in the user's terminal in the time zone to which the distribution time belongs. It is a part determined as a predicted position related to the terminal. The distribution time here is determined as the time when the user ID is output from the request reception unit 152 or the distribution management unit 107. More specifically, when the user ID is output from the position information acquisition unit 153, the predicted position determination unit 154 searches the communication characteristic storage unit 161 based on the user ID and includes the distribution time in the time zone. Obtain predicted position information about the user. Then, the predicted position determination unit 154 determines the position indicated by the predicted position information as the predicted position at the delivery time, converts the position into the position information ID, and together with the user ID, content group information, and preference information, the communication means determination unit. Output to 109. When the reader ID information is output from the position information acquisition unit 153, the reader ID information is converted into the position information ID instead of the predicted position information, and is output to the communication means determination unit 109.

  The communication means determination unit 109 outputs the content group information and the preference information output from the predicted position determination unit 154 to the content selection unit 155 in addition to the functions already described.

  The content selection unit 155 is based on the predicted position determined by the predicted position determination unit 154 or the reader ID information acquired by the position information acquisition unit 153 and the content group information and preference information received by the request reception unit 152. This is a part for selecting content to be distributed to the user's terminal. Note that the content selection unit 155 uses information set in advance for each user as content group information and preference information when content is distributed by the push method. First, the content selection unit 155 refers to the content information storage unit 162 and acquires information related to the distribution plan for each content group. FIG. 15 shows an example of a configuration diagram of data stored in the content information storage unit 162. According to the example of FIG. 15, data related to a distribution plan of content belonging to the group of content group information “Tokyo entertainment information” distributed to the terminal existing at the position indicated by the distribution position ID “10000001” is stored. According to this data example, the content index ID “1-1” is stored as information for specifying the content to be distributed when the distribution time is included in the distribution time zone “9:00 to 10:00”. ing. The content selection unit 155 refers to such data, so that the content group information matches, the distribution time is included in the time zone, and the position information ID output from the predicted position determination unit 154 is distributed. Data matching the position ID is extracted, and the content index ID is specified from the data.

  Further, the content selection unit 155 refers to the index data related to the content heading stored in the content storage unit 163. FIG. 16 shows an example of a configuration diagram of index data stored in the content storage unit 163. According to the example shown in FIG. 16, the content index ID “1-1” specifying the content and the preference information “movie” are associated with the content file name “FILE1-1A” specifying the file storing the content. Stored. The content selection unit 155 extracts index data having the same content index ID and the same preference information from such data, and acquires the content file name to be distributed. For example, when the content index ID is “1-1” and the preference information is “game”, the content file name “FILE1-1B” is acquired.

  By the operation as described above, the content selection unit 155 determines the content to be distributed to the user based on the position or predicted position at the time of distribution of the user, the content group information and preference information desired by the user, and the distribution time. Identify. The content selection unit 155 outputs the content file name to the data conversion unit 112 together with the user ID, the distribution communication unit, and the next candidate communication unit.

  Subsequently, an operation of the content distribution server according to the second embodiment will be described, and a content distribution method according to the embodiment of the present invention will be described.

  FIG. 17 is a sequence diagram showing an operation at the time of calculating communication characteristics of the content distribution server 2 according to the present embodiment. The processes in steps S101 to S106 and steps S107 to S108 shown in FIG. 17 are the same as the processes in steps S01 to S06 and steps S10 to S11 described in detail in the first embodiment (see FIG. 9). Since there is, explanation here is omitted.

  FIG. 18 is a sequence diagram showing an operation when the content distribution server 2 according to the present embodiment actively distributes content. The processes of steps S121 to S122, steps S129 to S131, and step S132 shown in FIG. 18 are the processes of steps S21 to S22, steps S29 to S31, and step S33 described in detail in the first embodiment (see FIG. 10). ), The processes of steps S123 to S128 other than those described above will be described below.

  When the distribution management unit 107 outputs the user ID to the position information acquisition unit 153, the position information acquisition unit 153 acquires RFID information related to the PHS terminal 203 read by the tag reader device 40 (step S123). Thereafter, the predicted position determination unit 154 determines the position indicated by the predicted position information including the delivery time in the time zone as the predicted position (step S125). And the communication means determination part 109 determines the communication means for delivery with reference to the communication means information storage part 126 based on the predicted position (step S126). The communication means determination unit 109 notifies the user of the PHS terminal 203 by transmitting the information on the determined communication means for distribution to the RFID tag 204 via the tag reader device 40 (step S127).

  Next, the content selection unit 155 sets the content information storage unit 162 and the content storage unit 163 based on the terminal position information of the user at the predicted position or distribution time and the content group information and preference information set in advance for the user. The content file name related to the content to be distributed to the user's terminal is selected (step S128).

  FIG. 19 is a sequence diagram showing an operation when the content distribution server 2 according to the present embodiment performs content distribution in response to a request from the terminal. Hereinafter, an operation when the content distribution server 2 performs content distribution in response to a request from the terminal will be described.

  First, request data for requesting distribution of content is transmitted from the mobile phone 201 or PDA 202 to the content distribution server 2 together with content group information and preference information regarding the content desired to be distributed (step S141). The request receiving unit 152 of the content distribution server 2 receives the request data and outputs the user ID for specifying the user, the content group information, and the preference information to the position information acquisition unit 153 (step S142). Thereafter, the content is distributed in exactly the same manner as in steps S123 to S132 in FIG. 18 (steps S143 to S152). Here, in step S148, the content group information and the preference information used by the content selection unit 155 when selecting the content file name are those received by the request reception unit 152.

  Next, a content distribution program according to an embodiment of the present invention and a computer-readable recording medium that records the content distribution program will be described. FIG. 20 is a configuration diagram of a recording medium according to the embodiment of the present invention. As shown in FIG. 20, the recording medium 95 includes a program area 97 for recording a program. In the program area 97, a content distribution program 96 is recorded. The content distribution program 96 includes a main module 961 that supervises processing, a communication I / F module 962, a communication information collection module 963, a communication characteristic calculation module 964, a request reception module 965, a distribution management module 966, A position information acquisition module 967, a predicted position determination module 968, a communication means determination module 969, a content selection module 970, a data conversion module 971, a data distribution module 972, and a protocol conversion module 973 are configured. . Here, the communication I / F module 962, the communication information collection module 963, the communication characteristic calculation module 964, the request reception module 965, the distribution management module 966, the position information acquisition module 967, the predicted position determination module 968, the communication means determination module 969, The functions realized by operating each of the content selection module 970, the data conversion module 971, the data distribution module 972, and the protocol conversion module 973 are the communication I / Fs 101, 102, and 103 of the content distribution server 2, the communication information collection unit 104, communication characteristic calculation unit 151, request reception unit 152, distribution management unit 107, position information acquisition unit 153, predicted position determination unit 154, communication means determination unit 109, content selection unit 155, data conversion unit 112, data distribution unit Means 113 is similar to the protocol conversion unit 114 of each function. As in the first embodiment, the data stored in the data area 98 of the recording medium 95 in this case may be stored in another recording medium.

  As a result, also in the second embodiment, the communication information collection unit 104 collects information about the time at which communication is performed by the user's terminal and the position of the terminal at the time of communication, and the predicted position determination unit 154 specifies The position having the longest communication time in the time zone to which the distribution time belongs is determined as the predicted position, the content selection unit 155 selects the content based on the determined predicted position, and the data distribution unit 113 distributes the content. . As a result, even if the terminal position information of the user is not acquired, the content is distributed according to the place where the user exists with high probability at the time of communication.

  The present invention is not limited to the above-described embodiment. For example, the content distribution servers 1 and 2 according to the present embodiment transmit the content file stored in the content storage unit 163 to the user terminal. This is because, after the content distribution servers 1 and 2 transmit addresses such as telephone numbers and IP addresses of other content distribution apparatuses to the user terminals, the user terminals are transferred to the content distribution apparatuses. You may make it access and acquire a content.

  In addition, the PHS terminal 203 in the present embodiment includes the RFID tag 204 as a user location capturing unit. However, the PHS terminal 203 is not limited to this as long as the PHS terminal 203 can be identified. A bar code may be attached or an infrared communication device or the like may be incorporated so that the content distribution servers 1 and 2 can receive ID information therefrom.

It is a schematic block diagram which shows 1st Embodiment of the content delivery server by this invention. It is a block diagram of the data stored in the communication history storage part of FIG. It is a block diagram of the data stored in the user information storage part of FIG. It is a block diagram of the data stored in the delivery history storage part of FIG. It is a block diagram of the data stored in the communication characteristic storage part of FIG. It is a block diagram of the data stored in the schedule information storage part of FIG. It is a block diagram of the data stored in the communication means information storage part of FIG. It is a block diagram of the index data stored in the content storage part of FIG. It is a sequence diagram which shows the operation | movement at the time of the communication characteristic calculation of the content delivery server concerning 1st Embodiment. It is a sequence diagram which shows operation | movement at the time of the content delivery server concerning 1st Embodiment actively delivering content. It is a sequence diagram which shows the operation | movement at the time of the content delivery server concerning 1st Embodiment delivering content according to the request | requirement from a terminal. 1 is a configuration diagram illustrating a first embodiment of a recording medium according to the present invention. It is a schematic block diagram which shows 2nd Embodiment of the content delivery server by this invention. It is a block diagram of the data stored in the communication characteristic storage part of FIG. It is a block diagram of the data stored in the content information storage part of FIG. It is a block diagram of the index data stored in the content storage part of FIG. It is a sequence diagram which shows the operation | movement at the time of the communication characteristic calculation of the content delivery server concerning 2nd Embodiment. It is a sequence diagram which shows the operation | movement at the time of the content delivery server concerning 2nd Embodiment performing content delivery actively. It is a sequence diagram which shows the operation | movement at the time of the content delivery server concerning 2nd Embodiment delivering content according to the request | requirement from a terminal. It is a block diagram which shows 2nd Embodiment of the recording medium by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 2 ... Content delivery server 101, 102, 103 ... Communication I / F, 104 ... Communication information collection part, 105, 151 ... Communication characteristic calculation part, 106, 152 ... Request reception part, 107 ... Delivery management part, 108 , 154 ... Predicted position determination unit, 109 ... Communication means determination part, 110 ... Content type determination part, 111, 155 ... Content selection part, 112 ... Data conversion part, 113 ... Data distribution means, 113a ... Voice response part, 113b ... Mail response unit 113c WEB server unit 114 Protocol conversion unit 121 User information storage unit 122 Distribution history storage unit 123 Communication history storage unit 124, 161 Communication characteristic storage unit 125 Schedule information Storage unit 126 ... Communication means information storage unit 127,163 ... Content storage unit 153 ... Position information acquisition unit 162 ... Content information storage unit, 201 ... mobile phone, 202 ... PDA terminal, 203 ... PHS terminal, 204 ... RFID tag, 301 ... mobile communication network, 302 ... Internet, 303 ... dedicated line network, 40 ... tag reader device, 50 ... wireless LAN base unit.

Claims (5)

Communication information collecting means for collecting time information for identifying a time at which communication is performed by a user terminal, and communication position information for identifying a position of the terminal at the time;
Based on the collected time information and communication position information, communication characteristic calculation means for calculating the probability that the user exists at a specific position for each time zone,
Based on the calculated probability, a predicted position determining unit that determines a position having the longest communication time in the user terminal in a time zone to which a predetermined distribution time belongs as a predicted position related to the user terminal;
Content selection means for selecting content to be distributed to the user terminal based on the determined predicted position;
Data distribution means for distributing the selected content to the terminal of the user at the distribution time;
A content distribution server comprising: A communication means determining means for determining a communication means for delivering the content to the user terminal based on the predicted position determined by the predicted position determining means;
The data distribution means distributes the content using the determined communication means.
The content distribution server according to claim 1. A distribution history storage unit that stores a content type related to content distributed to the terminal of the user by the data distribution unit and distribution time information related to a time when the content was distributed;
Content type determination means for determining, based on the stored content type and distribution time information, a content type with the longest distribution time for the user terminal as a distribution content type related to the user,
The content selection means is for selecting content from content belonging to the distribution content type.
The content distribution server according to claim 1 or 2. Computer
Communication information collecting means for collecting time information for identifying a time at which communication is performed by a user terminal and communication position information for identifying a position of the terminal at the time;
Communication characteristic calculation means for calculating the probability that the user exists at a specific position for each time zone based on the collected time information and communication position information,
Predicted position determining means for determining , based on the calculated probability, a position having the longest communication time of the user in a time zone to which a predetermined distribution time belongs as a predicted position related to the terminal of the user;
Content selection means for selecting content to be distributed to the user's terminal based on the determined predicted position;
Data distribution means for distributing the selected content to the terminal of the user at the distribution time;
Content distribution program to function as.   A computer-readable recording medium on which the content distribution program according to claim 4 is recorded.

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