JP5610864B2 - Push type information delivery system and push type information delivery method - Google Patents

Description

  The present invention relates to a technology for distributing information provided by an information provider from an information distribution server to a terminal, and in particular, selects a terminal that can perform PUSH distribution to a terminal different from a terminal that requests information and performs PUSH distribution based on the terminal state. The present invention relates to a PUSH type information distribution system and a PUSH type information distribution method that can adjust the timing of PUSH distribution.

  There are two methods for distributing information using a network: PULL type information distribution and PUSH type information distribution.

  PULL-type information distribution is a method in which a user requests information from a terminal to an information distribution server, and the information distribution server distributes information to the terminal immediately in response to the request.

  PUSH type information distribution is a method in which a user requests information from a terminal to an information distribution server, and the information distribution server distributes information to the terminal asynchronously with the timing of requesting information.

  Existing PUSH type information distribution technology includes a presence service using the PUBLISH / SUBSCRIBE / NOTIFY method of the SIP protocol (for example, Non-Reference Document 1). As shown in FIG. 27, in the presence service system that provides information (PUBLISH method) for content (presentity), the terminal that receives the information request and the information is the same (such a terminal is also referred to as a “watcher”). The request terminal and the receiving terminal are separated such that the first terminal requests information from the information distribution server (presence server) 500 and the second terminal receives the information, which corresponds to the terminal 501 shown in FIG. Can not do it.

  Also, in the existing PUSH type information distribution technology, after making a request for information (SUBSCRIBE method), when the terminal changes to an unreceivable state without notifying that the terminal changes to an unreceivable state (For example, the power of the terminal is cut off due to a power failure), the information (NOTIFY method) distributed at that time does not reach the receiving terminal and is not repeatedly distributed thereafter.

“Presence information”, WIKIPEDIA, [online], [Search June 7, 2010], Internet <http://en.wikipedia.org/wiki/Presence_information>

  First, in the presence service of the existing PUSH type information distribution technology, the terminal that requests information must be the same as the terminal that receives the information. Therefore, information can be distributed to a terminal different from the terminal that requested the information. Can not.

  For this reason, for example, an information request is made using a portable terminal accustomed to the operation, and information distribution is made to a terminal with a large screen such as a digital photo frame and a high reproduction capability. Can not.

  Second, since the push type information delivery is delivered asynchronously after the information request, the terminal state may change between the information request and the information delivery. In the presence service, if the terminal that has requested information changes to a state in which information cannot be received after the request, information distributed via PUSH cannot be received.

  For this reason, for example, the terminal is turned off due to a power failure after requesting information, and the terminal cannot receive the information even if the information is distributed.

  Therefore, an object of the present invention is to enable PUSH distribution to a terminal different from a terminal that requests information, select a terminal that performs PUSH distribution based on the state of the terminal, and adjust the timing of PUSH distribution. A system and a PUSH type information distribution method are provided.

A PUSH type information distribution system of the present invention is a PUSH type information distribution system that enables PUSH distribution to a terminal different from a terminal that requests content distribution from a content distribution server, from a first terminal to a content distribution server. An information redistribution unit that receives an information request for requesting content distribution and enables at least distribution of the content distributed from the content distribution server to one or more second terminals different from the first terminal. The information redistribution unit manages the correspondence between the first terminal that is the request source terminal of the information request and the content related to the information request, and sets the request source terminal ID that is the identifier of the request source terminal to the content. Re-determining the correspondence between the added virtual terminal that performs information transfer and the first terminal that is the request source terminal and the second terminal that is the redistribution destination terminal A rule DB that holds a communication rule, a terminal state DB that manages a terminal state indicating whether each terminal can receive information, and the request source terminal ID and the content included in the information transfer The information can be received only when it is determined that the information cannot be received by the first terminal according to the redistribution rule held in the rule DB and the terminal status held in the terminal status DB. and re-delivery destination determination device for determining a second terminal, characterized in that it and a PUSH redelivery apparatus for performing the PUSH type redistribution of the content to receivable said second terminal of said information.

Further, in the PUSH type data distribution system of the present invention, the information redistributing portion is pre SL includes information buffer for temporarily storing the content delivery server to the delivery contents, the re-delivery destination determination device, when it determined that the previous SL redistribution rule and a second terminal capable of receiving information based on the terminal state is not present, wherein the information buffer, it has a means for storing the contents temporarily And Moreover, in the PUSH type information distribution system of the present invention, for the terminals registered in the redistribution rule, a terminal state indicating whether each terminal can receive information is detected and registered in the terminal state DB The third terminal is provided.

Furthermore, the PUSH type information distribution method of the present invention is a PUSH type information distribution method in a PUSH type information distribution system that enables PUSH distribution to a terminal different from a terminal that requests content distribution from a content distribution server, The type information distribution system receives an information request for requesting content distribution from a content distribution server from a first terminal, and the content information distributed from the content distribution server is one or more different from the first terminal An information redistribution unit that enables distribution to at least the second terminal, the information redistribution unit including a virtual terminal, a first terminal that is the request source terminal, and a second terminal that is the redistribution destination terminal A rule DB that holds a redistribution rule that defines the correspondence between the terminal and the terminal that manages the terminal state indicating whether each terminal can receive information A status DB, a redistribution destination determination device, and a PUSH redistribution device, and the processing procedure of the information redistribution unit includes a first terminal that is a request source terminal of the information request and Included in the information transfer by the step of managing the correspondence with the content related to the information request, performing the information transfer with the request source terminal ID being the identifier of the request source terminal added to the content, and the redistribution destination determination device Receiving the request source terminal ID and the content, and the first terminal cannot receive the information according to the redistribution rule held in the rule DB and the terminal status held in the terminal status DB when it is determined that only the step of determining a second terminal capable of receiving the information, by the PUSH redistribution device, to said second terminal capable of receiving the information Characterized in that it comprises the steps of: performing a PUSH type redistribution of the content.

Further, in the PUSH type data distribution method of the present invention, the information redistributing portion is pre SL content distribution server to the equipped information buffer for temporarily storing the delivery content, the re-delivery destination determining device processing procedures, if the previous SL redistribution rule and a second terminal capable of receiving information based on the terminal state is determined to not exist, the information buffer, and storing the contents temporarily , Including. In the PUSH type information distribution method of the present invention, the PUSH type information distribution system includes a third terminal, and each terminal stores information on a terminal registered in the redistribution rule by the third terminal. It includes a step of detecting a terminal state indicating whether or not it can be received and registering it in the terminal state DB.

  ADVANTAGE OF THE INVENTION According to this invention, the delivery destination terminal of information can be determined based on the redistribution rule set by the user of the PUSH type | mold information delivery system which concerns on this invention. Thereby, it is possible to deal with a case where it is desired to push-distribute information requested from the first terminal suitable for information request to the second terminal suitable for information display.

  Moreover, according to this invention, the delivery destination of information can be determined based on the re-distribution rule and the state of the terminal which the user of the PUSH type | mold information delivery system which concerns on this invention set. In particular, by setting a terminal that functions as a sensor that monitors the status of the terminal rather than by the user explicitly setting the status of the terminal, the terminal that requested the information cannot receive the information after the request. In a case where the information distributed and the push distributed information cannot be received, the distribution destination can be automatically changed to a terminal capable of receiving information from among other terminals in the redistribution rule.

  Further, according to the present invention, the PUSH type information distribution system according to the present invention determines that there is no receivable terminal, temporarily stores the information in a buffer in the apparatus, and then stores the state of the terminal Or the distribution rule is changed, and information can be redistributed when a receivable terminal appears. As a result, it is possible to avoid a case in which the distributed information cannot be received because there is no terminal that can receive the information.

It is the schematic of the PUSH type | mold information delivery system of 1st Embodiment by this invention. It is the schematic of the information delivery server in the PUSH type | mold information delivery system of 1st Embodiment by this invention. It is the schematic of the virtual terminal in the PUSH type | mold information delivery system of 1st Embodiment by this invention. It is the schematic of the re-delivery destination determination apparatus in the PUSH type | mold information delivery system of 1st Embodiment by this invention. It is the schematic of the PUSH redistribution apparatus in the PUSH type | mold information delivery system of 1st Embodiment by this invention. It is the schematic of the terminal in the PUSH type | mold information delivery system of 1st Embodiment by this invention. It is a flowchart which shows the rule setting operation | movement of the PUSH type | mold information delivery system in 1st Embodiment by this invention. It is a flowchart which shows the information request | requirement operation | movement of the PUSH type | mold information delivery system in 1st Embodiment by this invention. It is a flowchart which shows the information re-transmission operation | movement of the PUSH type | mold information delivery system in 1st Embodiment by this invention. It is a figure which shows the structural example of the redistribution rule used with the PUSH type | mold information delivery system of 1st Embodiment by this invention. It is a figure which illustrates information request URI linked | related with request origin terminal ID used with the PUSH type | mold information delivery system of 1st Embodiment by this invention. (A), (B) is a figure which shows the specific description example of the re-distribution rule used with the PUSH type | mold information delivery system of 1st Embodiment by this invention. It is a figure which shows the specific description example of the re-distribution rule used with the PUSH type | mold information delivery system of 1st Embodiment by this invention. It is a figure which shows the structural example of the redistribution rule used with the PUSH type | mold information delivery system of 2nd Embodiment by this invention. It is a figure which shows the structural example of the terminal state managed by the terminal state DB used with the PUSH type | mold information delivery system of 2nd Embodiment by this invention. (A), (B) is a figure which shows the specific description example of the redistribution rule used with the PUSH type | mold information delivery system of 2nd Embodiment by this invention. It is the schematic of the PUSH type | mold information delivery system of 2nd Embodiment by this invention. It is the schematic of the information buffer in the PUSH type | mold information delivery system of 2nd Embodiment by this invention. It is the schematic of the re-delivery destination determination apparatus in the PUSH type | mold information delivery system of 2nd Embodiment by this invention. It is the schematic of the terminal in the PUSH type | mold information delivery system of 2nd Embodiment by this invention. It is the schematic of the terminal in the PUSH type | mold information delivery system of 2nd Embodiment by this invention. It is a flowchart which shows the rule setting operation | movement of the PUSH type | mold information delivery system in 2nd Embodiment by this invention. It is a flowchart which shows the information request | requirement operation | movement of the PUSH type | mold information delivery system in 2nd Embodiment by this invention. It is a flowchart which shows the information request | requirement operation | movement of the PUSH type | mold information delivery system in 2nd Embodiment by this invention. It is a flowchart which shows the information retransmission operation | movement of the PUSH type | mold information delivery system in 2nd Embodiment by this invention. (A) thru | or (F) is a figure which shows the structural example of the information used with the PUSH type | mold information delivery system of 1st or 2nd embodiment by this invention. It is a figure which shows the outline of the system form of the existing presence service.

  First, the PUSH type information distribution system according to the first embodiment of the present invention will be described.

[System Configuration of First Embodiment]
FIG. 1 is a schematic diagram of a PUSH type information distribution system according to a first embodiment of the present invention. FIG. 2 is a schematic diagram of an information distribution server in the PUSH type information distribution system according to the first embodiment of the present invention. FIG. 3 is a schematic diagram of a virtual terminal in the PUSH type information distribution system according to the first embodiment of the present invention. FIG. 4 is a schematic diagram of a redistribution destination determination device in the PUSH type information distribution system according to the first embodiment of the present invention. FIG. 5 is a schematic diagram of a PUSH redistribution device in the PUSH type information distribution system according to the first embodiment of the present invention. FIG. 6 is a schematic diagram of a terminal in the PUSH type information distribution system according to the first embodiment of the present invention.

  Referring to FIG. 1, the PUSH type information distribution system of the present embodiment that solves the first conventional problem enables PUSH distribution to a terminal different from a terminal that requests content distribution from a content distribution server. The system includes an information distribution server 110, an information redistribution unit 210, and a plurality of terminals 310 and 320.

  The information redistribution unit 210 manages the correspondence between the first terminal 310 that is the request source terminal of the information request and the content distributed from the information providing server 110 related to the request, and the request source that is the identifier of the request source terminal A rule that holds a redistribution rule that defines the correspondence between the virtual terminal 220 that performs information transfer with the terminal ID added to the content, the first terminal 310 that is the request source terminal, and the second terminal 320 that is the redistribution destination terminal. DB240, receiving the request source terminal ID and content included in the information transfer, and determining the second terminal 320 that is the delivery destination and the redistribution timing according to the redistribution rules held in the rule DB240, Redistribution that transmits the redistribution destination terminal ID, which is the identifier of the redistribution destination terminal, and the content to the push redistribution device 250 according to the determined timing Comprising a decision device 230, and a PUSH redistribution device 250 to redistribute the contents obtained from the re-delivery destination determination device to at least a second terminal 320.

  The information distribution server 110 is a server equivalent to the presence server in the above-described conventional presence service.

  More specifically, as illustrated in FIG. 2, the information distribution server 110 includes an information providing unit 1101, an information request receiving unit 1102, and an information distribution unit 1103. The information distribution server 110 can be configured as a computer, and each function can be realized by executing a program stored in a predetermined storage unit (not shown) by a central processing unit (CPU).

  The information request receiving unit 1102 has a function of receiving an information distribution request (hereinafter also simply referred to as “information request”) from the virtual terminal 220.

  The information providing unit 1101 has a function of providing the content specified by the information request (hereinafter also simply referred to as “content”).

  The information distribution unit 1103 has a function of PUSH distribution of the requested content related to the information request.

  Accordingly, the information distribution server 110 receives an information request from the virtual terminal 220 by the information request receiving unit 1102, provides the requested content by the information providing unit 1101, and pushes the PUSH type to the virtual terminal 220 by the information distribution unit 1103. Information distribution.

  The information request includes a URI (hereinafter referred to as “information ID”) including a URI of the information distribution server 110 (hereinafter referred to as “information distribution server URI”) and a specification of which content is requested (hereinafter referred to as “content ID”). (Referred to as “request URI”) (see FIG. 26A).

  For example, when the information distribution server URI of the information distribution server 110 is “http://ntt.co.jp” and the content ID is id = 10, the information request URI is “http://ntt.co.jp? It is expressed as “id = 10”. Similarly, when the content ID is id = 20, the information request URI is expressed as “http://ntt.co.jp?id=20” and can be associated with a request source terminal ID described later (see FIG. 11). ).

  Information distributed by the information distribution unit 1103 includes an information request URI and designated content (see FIG. 26B).

  Referring to FIG. 3, the virtual terminal 220 includes an information request unit 2201, an information distribution reception unit 2202, an information request reception unit 2203, a request source terminal ID addition unit 2204, and a request source terminal ID database (DB) 2205. And an information transfer unit 2206. The virtual terminal 220 can be configured as a computer, and each function can be realized by executing a program stored in a predetermined storage unit (not shown) by a central processing unit (CPU).

  The information request receiving unit 2203 has a function of receiving an information request from the first terminal 310. The information request at this time includes an information request URI and a request source terminal ID (see FIG. 26C).

  The request source terminal ID database (DB) 2205 is a database that registers the unique identifier of the terminal that makes an information request and the information request URI in association with each other. Note that the unique identifier of the terminal is referred to as “terminal ID”, and in particular, the terminal ID of the terminal that requests information is referred to as “request source terminal ID”.

  The information request unit 2201 has a function of making an information request to the information distribution server 110 based on the information distribution server URI in the information request URI. The information request at this time includes an information request URI (see FIG. 26A).

  The information distribution receiving unit 2202 has a function of receiving information distribution from the information distribution server 110 and passing it to the request source terminal ID adding unit 2204. The information to be received includes the information request URI and the designated content (see FIG. 26B).

  The request source terminal ID adding unit 2204 searches the request source terminal ID database (DB) 2205 for the information request URI included in the information passed from the information request unit 2201, derives a matching request source terminal ID, and receives the received request ID. It has a function of adding information request URI and information consisting of designated contents to the information transfer unit 2206.

  The information transfer unit 2206 has a function of transferring the information passed from the request source terminal ID adding unit 2204 to another device (redistribution destination determination device 230 in this example). The passed information includes a request source terminal ID, an information request URI, and content (see FIG. 26D).

  The rule DB 240 is a database that stores conditions for determining information redistribution destinations (hereinafter also referred to as “redistribution rules”).

  The contents described in the redistribution rule associate the first terminal 310 that is the request source terminal and the second terminal 320 that is the information distribution destination terminal. A specific configuration example of the redistribution rule is shown in FIG. Referring to FIG. 10, the redistribution rule includes three elements, a parent element, a child element, and a grandchild element. The parent element is composed of a rule number representing the identification number of the redistribution rule, and the child element is a condition indicating the first terminal 310 that made the information request and the content related to the request (hereinafter, “request source terminal condition”). And a grandchild element of the request source terminal condition is defined as a condition indicating the second terminal 320 that is a distribution destination terminal of information related to the information request (hereinafter referred to as “distribution destination terminal condition”). It is composed of an ID and an information request URI, and the grandchild element of the distribution destination terminal condition is composed of a terminal ID.

  In this redistribution rule, if the terminal ID and information request URI are described as “any (arbitrary)” or not described, all terminal IDs and all information request URIs are indicated. The specific description of the redistribution rule is preferably described in XML (eXtensible Markup Language) format as shown in FIGS. In the example of FIG. 12A, rule 1 (rule 1) is a terminal (first terminal 310) whose terminal ID of the request source terminal is 1, and the information request URI is “http://ntt.co.jp? In the example of FIG. 12B, rule 2 (rule 2) indicates which request source terminal the content of “id = 10” is distributed to the terminal (second terminal 320) whose terminal ID is 2. The ID is a description that the content of any information request URI is distributed to the first terminal 310 and the second terminal 320. The rule DB 240 has a function for registering / changing / deleting a re-distribution rule, and registration / change / deletion is explicitly performed by a user using a web interface or the like, or the device automatically Can be done automatically. For example, when a new content is requested while using an existing terminal, a rule for handling the content is registered, or when a new terminal is used, the existing content is distributed to the new terminal. As described above, it is possible to change the existing rule, or to delete the rule regarding the terminal to be discarded when the existing terminal is discarded.

  Referring to FIG. 4, redistribution destination determination device 230 includes information transfer acceptance unit 2301, rule comparison unit 2302, distribution destination terminal ID addition unit 2303, and information transfer unit 2304. The redistribution destination determination device 230 can be configured as a computer, and each function can be realized by executing a program stored in a predetermined storage unit (not shown) by a central processing unit (CPU).

  The information transfer receiving unit 2301 has a function of receiving information transfer from another device (in this example, the virtual terminal 220).

  The information transfer receiving unit 2301 has a function of passing the information transfer content received from the virtual terminal 220 to the rule comparing unit 2302. The content of the information transfer at this time includes the request source terminal ID, the information request URI, and the content (see FIG. 26D).

  The rule comparison unit 2302 has a function of comparing the content of the information transfer with the redistribution rule and determining a distribution destination of the information transfer information. Specifically, the rule comparison unit 2302 compares the request source terminal ID and information request URI included in the information transfer information with the terminal ID and information request URI in the request source terminal condition of the redistribution rule, and matches. If there is a redistribution rule to be distributed, the terminal ID (that is, the distribution destination terminal ID) in the distribution destination terminal condition of the matched redistribution rule and the information transfer information passed from the information transfer reception unit 2301 are distributed to the distribution destination. If there is no redistribution rule that matches the terminal ID addition unit 2303, the terminal ID addition unit 2303 has the function of passing the same terminal ID as the request source terminal ID to the distribution destination terminal ID addition unit 2303. When there are a plurality of destinations, the information transfer information is duplicated by the number of delivery destination terminal IDs and passed to the delivery destination terminal ID adding unit 2303.

  The distribution destination terminal ID adding unit 2303 replaces the request source terminal ID included in the information transfer information with the terminal ID (that is, the distribution destination terminal ID) passed by the rule comparison unit 2302, and sends it to the information transfer unit 2304. Has a function to pass. The information at this time includes a delivery destination terminal ID, an information request URI, and content (see FIG. 26D). When a plurality of distribution destination terminal IDs are passed by the rule comparison unit 2302, the distribution destination terminal ID adding unit 2303 regards the information transfer information duplicated by the number of distribution destination terminal IDs. The request source terminal ID included in the information is rewritten to the distribution destination terminal ID in each redistribution rule and passed to the information transfer unit 2304.

  The information transfer unit 2304 has a function of transferring the information passed from the distribution destination terminal ID addition unit 2303 to the PUSH redistribution device 250.

  Referring to FIG. 5, the PUSH redistribution device 250 includes an information transfer acceptance unit 2501 and a PUSH redistribution unit 2502. The PUSH redistribution device 250 can be configured as a computer, and each function can be realized by executing a program stored in a predetermined storage unit (not shown) by a central processing unit (CPU).

  The information transfer accepting unit 2501 has a function of accepting the information transferred from the redistribution destination determining device 230 and passing it to the PUSH redistribution unit 2502. The received information includes a distribution destination terminal ID, an information request URI, and content (see FIG. 26E).

  The push redistribution unit 250 has a function of performing push redistribution of the information transferred to the terminal (second terminal 320 in this example) designated by the distribution destination terminal ID included in the information transferred. Have This redistributed information includes the information request URI and the specified content (see FIG. 26B).

  Referring to FIG. 6, the first terminal 310 and the second terminal 320 each include both or one of the information request unit 3001 and the information reception unit 3002. Each of the first terminal 310 and the second terminal 320 can be configured as a computer, and each function is realized by executing a program stored in a predetermined storage unit (not shown) by a central processing unit (CPU). be able to.

  The information request unit 3002 has a function of making an information request to the virtual terminal 220. The information request at this time includes an information request URI and a request source terminal ID (see FIG. 26C).

  The information receiving unit 3001 has a function of receiving information redistribution by the PUSH redistribution device 250. This redistributed information includes the information request URI and the specified content (see FIG. 26B).

  Note that the first terminal 310 and the second terminal 320 do not necessarily have both the information requesting unit 3002 and the information receiving unit 3001. For example, there are a mobile phone or the like that has only the information request unit 3002 due to limited playback capability, and a digital photo frame or the like that has only the information reception unit 3001 due to limited operation capability. Considered as a terminal according to the invention.

  Next, with reference to FIGS. 7-9, the flow of the PUSH type | mold information delivery process of the PUSH type | mold information delivery system in 1st Embodiment by this invention is demonstrated.

[System Operation of First Embodiment]
FIG. 7 is a flowchart showing a rule setting operation of the PUSH type information distribution system according to the first embodiment of the present invention. FIG. 8 is a flowchart showing an information requesting operation of the PUSH type information distribution system in the first embodiment according to the present invention. FIG. 9 is a flowchart showing the information retransmission operation of the PUSH type information distribution system in the first embodiment according to the present invention.

  In the following description, the first terminal 310 requests an information request for distribution of content (hereinafter referred to as “content A”) whose information request URI is “http://ntt.co.jp?id=10”. Will be described along with an example of delivering to the first terminal 310 and the second terminal 320.

  As shown in FIGS. 7 to 9, the PUSH type information distribution process includes three processes: rule setting, information request, and information retransmission.

  Referring to FIG. 7, in the rule setting operation, first, a user sets a rule as a condition for determining a delivery destination terminal in the rule DB 240 (step S21). In this example, the redistribution rule describes 1 in the request source terminal and 1 and 2 in the distribution destination terminal ID as in rule 1 (rule 1) illustrated in FIG.

  Referring to FIG. 8, in the information requesting operation, the user operates the first terminal 310 and makes an information request to the virtual terminal 220 by the information requesting unit 2201 of the first terminal 310 (step S22). The information request at this time includes “http://ntt.co.jp?id=10” as the information request URI and 1 as the request source terminal ID (see FIG. 26C). .

  The virtual terminal 220 accepts the information request by the information request accepting unit 2203, and sets the request source terminal ID 1 and the information request URI “http://ntt.co.jp?id=10” as the request source. Register in the terminal ID database (DB) 2205.

  Next, the virtual terminal 220 makes an information request to the information distribution server 110 by the information request unit 2201 (step S23). The information request at this time includes “http://ntt.co.jp?id=10” as the information request URI (see FIG. 26A).

  The request is received, and as information redistribution in this example, the information providing server 110 provides “content A” by the information providing unit 1101 and the information distributing unit 1103 distributes the information to the virtual terminal 220. Information distribution at this time includes information request URIs “http://ntt.co.jp?id=10” and “contents A” (see FIG. 26B).

  Next, the virtual terminal 220 receives the information received from the information providing server 110 from the information distribution receiving unit 2202 (step S24), refers to the request source terminal ID database 2205, and uses the request source terminal ID addition unit 2204. Then, 1 is added to the information received from the information distribution receiving unit 2202 as the request source terminal ID, and then the information is transferred to the redistribution destination determining device 230 by the information transfer unit 2206. The information at this time includes a request source terminal ID of 1, an information request URI of “http://ntt.co.jp?id=10”, and “content A”.

  The redistribution destination determination device 230 receives information related to information transfer from the virtual terminal 220 by the information transfer accepting unit 2301 (step S25), and sets a rule for a destination terminal of the information related to information transfer received by the information transfer accepting unit 2301 This is determined by the comparison unit 2302 (step S26).

  As a result of the comparison with rule 1 (rule 1) indicating the redistribution rule in FIG. 13, the rule comparison unit 2302 indicates that the first terminal 310 and the second terminal 320 correspond to the distribution destination terminals (“corresponding” shown in FIG. 9). Yes ”), the process proceeds to step S27, and when there are a plurality of distribution destinations, the information transfer information is copied by the number of distribution destination terminal IDs.

  When the first terminal 310 and the second terminal 320 are not applicable as the distribution destination terminals as a result of the comparison with the rule 1 (rule 1) indicating the redistribution rule in FIG. 13, the rule comparison unit 2302 (matching redistribution rule) If the request source terminal ID is the distribution destination terminal ID, the process proceeds to step S28.

  Next, the distribution destination terminal ID addition unit 2303 of the redistribution destination determination device 230 adds the distribution destination terminal ID to the information (step S28), and passes it to the PUSH redistribution device 250 by the information transfer unit 2304. In the case of this example, since there are two distribution destination terminal IDs, the distribution destination terminal ID adding unit 2303 duplicates the information transfer information into two, and distributes the distribution destination terminal ID 1 to one of the distribution destinations. The terminal ID 2 is added to the other information and passed to the PUSH redistribution apparatus 250. The information at this time includes “1 or 2 distribution destination terminal ID” and “content A”.

  Next, the PUSH redistribution device 250 receives two pieces of information transfer information by the information transfer receiving unit 2301, and push-distributes them to the first terminal 310 and the second terminal 320, respectively (step S29).

  Next, finally, the first terminal 310 and the second terminal 320 receive information by the information receiving unit 3001 (step S30).

  According to the PUSH type information distribution system configured as described above, the information requested by the first terminal 310 is PUSH distributed to the second terminal 320 in accordance with the redistribution rules set by the user. It is possible to separate the requesting terminal and the information receiving terminal.

  Next, a PUSH type information distribution system according to a second embodiment of the present invention will be described.

[System Configuration of Second Embodiment]
FIG. 14 is a diagram illustrating a configuration example of a redistribution rule used in the PUSH type information distribution system according to the second embodiment of this invention. FIG. 15 is a diagram illustrating a configuration example of a terminal state managed by the terminal state DB used in the PUSH type information distribution system according to the second embodiment of the present invention. FIG. 16 is a diagram illustrating a specific description example of a redistribution rule used in the PUSH type information distribution system according to the second embodiment of this invention. FIG. 17 is a schematic diagram of a PUSH type information distribution system according to the second embodiment of the present invention. FIG. 18 is a schematic diagram of an information buffer in the PUSH type information distribution system according to the second embodiment of the present invention. FIG. 19 is a schematic diagram of a redistribution destination determination device in the PUSH type information distribution system according to the second embodiment of this invention. 20 and 21 are schematic diagrams of terminals in the PUSH type information distribution system according to the second embodiment of the present invention.

  In the following description, differences between the second embodiment and the first embodiment will be mainly described. The same constituent elements will be described with the same reference numerals.

  Referring to FIG. 17, a PUSH type information distribution system that is a second embodiment that solves both the first problem and the second problem in the related art includes an information distribution server 110, an information redistribution unit 210, , Comprising a plurality of terminals 310, 320, 330.

The information redistribution unit 210 manages the correspondence between the first terminal 310 that is the request source terminal of the information request and the content distributed from the information providing server 110 related to the request, and the request source that is the identifier of the request source terminal A rule that holds a redistribution rule that defines the correspondence between the virtual terminal 220 that performs information transfer with the terminal ID added to the content, the first terminal 310 that is the request source terminal, and the second terminal 320 that is the redistribution destination terminal. DB 240, terminal status DB for managing terminal status indicating whether or not a terminal that receives content is received, and information buffer for temporarily storing content distributed by PUSH from content distribution server 110 according to redistribution rule and terminal status 270, the request source terminal ID and the content included in the information transfer, and the redistribution held in the rule DB 240 A re-distribution destination determination device 230 that determines the second terminal 320 as a distribution destination and its re-distribution timing according to the service, and transmits the content to the PUSH re-distribution device 250 according to the determined timing; A PUSH redistribution device 250 that redistributes the content acquired from the destination determination device to at least the second terminal 320, and the redistribution destination determination device 230 is a redistribution destination terminal based on the redistribution rule and the terminal status information A certain second terminal 320 and its redistribution timing are determined, and it is determined that the second terminal 320, which is a redistribution destination terminal determined based on the redistribution rule, is not receivable based on the terminal state information. case, the information buffer 270, configured to temporarily store the content distribution server 110 or we deliver content. Note that the PUSH type information distribution system according to the second embodiment detects the terminal state indicating whether or not the redistributed information can be received for the terminal registered in the redistribution rule, and registers it in the terminal state DB 260. It is preferable to provide three terminals 330.

  The information distribution server 110 has the same configuration and processing as in the first embodiment.

  The virtual terminal 220 has the same configuration and processing as the first embodiment.

  The terminal status DB 260 is a database that registers a terminal ID and a status indicating whether each terminal can receive information (referred to as “terminal status” in this description) in association (see FIG. 15). Operations such as addition / change / deletion of registration information are performed by the status registration units 3301 and 3303 in the terminals 310, 320, and 330, respectively.

  Further, the terminal state DB 260 detects the change in the DB contents, and for example, sends a message (terminal state change notification) to the redistribution destination determination device 230 that the contents managed in the terminal state DB 260 have been changed. It shall have.

  The rule DB 240 is a database that stores conditions (“redistribution rules”) for determining information redistribution destinations. The content described in the re-distribution rule associates the request source terminal with the information distribution destination terminal. A specific configuration example of the redistribution rule is shown in FIG. The redistribution rule includes three elements, a parent element, a child element, and a grandchild element. The parent element is composed of a rule number that represents the identification number of the redistribution rule, and the child element is a condition that indicates the terminal that requested the information and the requested content (“request source terminal condition”), and the terminal that wants to distribute the information. The grandchild element of the request source terminal condition is composed of the terminal ID, the information request URI, and the terminal state, and the grandchild element of the destination terminal condition is the terminal ID and the terminal state. Consists of.

  In this redistribution rule, when the terminal ID and information request URI are described as 'any (arbitrary)' or not described, all terminal IDs and information request URIs are indicated. A specific description of the redistribution rule is described in an XML (eXtensible Markup Language) format as shown in FIGS.

  In the example of FIG. 16A, rule 1 (rule 1) has a request source terminal ID of 1 (first terminal 310) and an information request URI of “http://ntt.co.jp?id=10”. The content is described as being distributed to the second terminal 320 if the second terminal 320 having a terminal ID of 2 can be received when the first terminal 310 cannot receive the content. In the example of FIG. 16B, rule 2 (rule 1) is a description that any content requested by any terminal that cannot receive the content is distributed to the second terminal 320.

  Further, the rule DB 240 has a function of detecting a change in the DB contents and sending a message (rule change notification) indicating that the contents managed by the rule DB 240 have been changed to the redistribution destination determining apparatus 230.

  The rule DB 240 has a function of registering / changing / deleting a re-distribution rule. Registration / change / deletion is explicitly performed by a user using a web interface or the like, or automatically performed by a device. Shall be able to.

  Referring to FIG. 18, the information buffer 270 includes an information transfer unit 2701, an information transfer reception unit 2702, and an information DB 2703.

  The information transfer accepting unit 2702 has a function of receiving information passed by the redistribution destination determining device 230, adding a reception time (hereinafter referred to as “storage time”) to the received information, and passing the information to the information DB 2703. . The information at this time includes a storage time, a request source terminal ID, an information request URI, and content (see FIG. 26F).

  The information DB 2703 is a database that stores information passed from the information transfer accepting unit 2702. In addition, the information DB 2703 receives an information carry-out request from the redistribution destination determination device 230, passes the information in this DB to the information transfer unit 2701 in order to send it to the redistribution destination determination device 230, and an information transfer unit When passing information to the re-distribution destination determination device 230 by 2701, the information DB 2703 has a function of calculating a period stored from the current time and the storage time, and discarding a message after a predetermined period. Here, the information carry-out request is a message indicating that information is to be carried out. The period for determining whether to discard information (hereinafter referred to as “storage time boundary value”) is set by the user in advance using a Web interface or the like. The information transfer unit 2701 in the information buffer 270 has a function of transferring information passed from the information DB 2703 to the redistribution destination determination device 230.

  Referring to FIG. 19, the redistribution destination determination device 230 includes an information transfer acceptance unit 2301, a rule comparison unit 2302, a distribution destination terminal ID addition unit 2303, an information transfer unit 2304, a terminal state acquisition unit 2305, And an information carry-out request unit 2306.

  The information transfer accepting unit 2301, the distribution destination terminal ID adding unit 2303, and the information transfer unit 2304 have the same configuration and processing as in the first embodiment.

  The rule comparison unit 2302 has a function of comparing information related to redistribution from the redistribution destination determination device 230 with terminal state information and redistribution rules to determine the information distribution destination.

  More specifically, the rule comparison unit 2302 acquires the terminal state (request source terminal state) of the request source terminal from the terminal state DB 260 based on the request source terminal ID of the information passed by the information transfer reception unit 2301. Thereby, the rule comparison unit 2302 knows a set of request source terminal ID, information request URI, and request source terminal status (hereinafter referred to as “request source terminal information”).

  Next, in the rule DB 40, the rule comparison unit 2302 redistributes the request source terminal information and the request source terminal condition (the grandchild element is composed of the request source terminal ID, the information request URI, and the request source terminal state). Search for.

  Next, when there is no rule whose request source terminal condition matches the request source terminal information, the rule comparison unit 2302 uses the same terminal ID as the request source terminal ID as the distribution destination terminal ID, and is passed by the information transfer reception unit. Information and the distribution destination terminal ID are passed to the distribution destination terminal ID adding unit 2303. As a result, in the case of an information request by a terminal that is not described in the rule, the same operation as the conventional technique of distributing information to the terminal that made the information request is enabled.

  On the other hand, when there is a rule that matches the request source terminal condition of the rule and the request source terminal information, the rule comparison unit 2302 determines the terminal ID (the terminal indicated by this terminal ID) of the distribution destination terminal condition in the matched rule. The terminal state of the distribution destination candidate terminal is acquired from the terminal state DB 260 based on “distribution destination candidate terminal”. As a result, a set of terminal IDs and terminal states of the distribution destination candidate terminals (hereinafter referred to as “distribution destination candidate terminal information”) is known.

  Next, the rule comparison unit 2302 compares the delivery destination candidate terminal information with the delivery destination terminal condition (the grandchild element is composed of the delivery destination terminal ID and the delivery destination terminal state), and the terminal ID of the matched delivery destination candidate terminal. Is set as the distribution destination terminal ID, and then the information related to the redistribution and the distribution destination terminal ID passed from the information transfer accepting unit 2301 are delivered to the distribution destination terminal ID adding unit 2303.

  Note that the rule comparison unit 2302 relates to the redistribution passed from the information transfer accepting unit 2301 when the distribution destination candidate terminal and the distribution destination condition do not match in the rule in which the request source terminal condition and the request source terminal information match. Information is transferred to the information transfer unit 2304.

  The information transfer unit 2304 has a function of transferring the information passed from the rule comparison unit 2302 (only information related to redistribution) to the information buffer 270 and the information passed from the distribution destination terminal ID adding unit 2303 (for redistribution). And a function of transferring the information and the distribution destination terminal ID) to the push redistribution apparatus 250. The former information (only information related to redistribution) includes a request source terminal ID, an information request URI, and content (see FIG. 26D). Information in the latter case (information related to redistribution and distribution destination terminal ID) includes a distribution destination terminal ID, an information request URI, and content (see FIG. 26E).

  The information export request unit 2306 has a function of receiving a change notification from the terminal state DB 260 and / or the rule DB 240 and making an information export request to the information buffer 270. The information carry-out request is a message indicating that information is to be carried out.

  The PUSH redistribution device 250 has the same configuration and processing as in the first embodiment.

  The terminals 310 and 320 include all or one of the information request unit 3002, the information reception unit 3001, and the state registration unit 3003. The information requesting unit 3002 and the information receiving unit 3001 have the same configuration and processing as in the first embodiment.

  The state registration unit 3003 has a function of registering the state of the terminal in the terminal state DB 260. Information to be registered is a terminal ID and a terminal state indicating whether or not reception is possible. At this time, not only the terminal itself but also the terminal can be operated to register the state of another terminal.

Further, like the terminal 330, it can have a terminal monitoring unit 3302 that monitors its own terminal state from the outside and passes the terminal state to the state registration unit 3301 that functions in the same manner as the state registration unit 3003. Such a terminal can be regarded as a terminal having a sensor function for detecting a terminal state of another terminal. Sensor functions include monitoring the terminal power status (whether power is on), terminal resources (calculation capacity, storage capacity, communication capacity), temperature, humidity, illuminance, rainfall, volume, etc. Environment monitoring, time, position, altitude, direction, speed, acceleration, tilt (angle), distance, weight, pressure, vibration, etc., monitoring things and human condition, barcode, IC tag, face, fingerprint It is possible to identify a specific thing or person, or to detect a specific event such as a gas leak, smoke, flame, heat, radiation, or pollen. The terminal 330 uses a sensor function to determine a terminal state to be passed to the state registration unit 3301 according to the state of the terminal to be monitored and the surrounding situation of the terminal to be monitored. For example, the power status and resources of the terminals 310 and 320 are monitored by the terminal 330, and information indicating whether the terminals 310 and 320 can receive information is passed.
It is conceivable to monitor whether or not there are people around the terminals 310 and 320 and pass a state that the terminals 310 and 320 can receive only when there are people.

  Next, with reference to FIGS. 22-25, the flow of the PUSH type | mold information delivery process of the PUSH type | mold information delivery system in 2nd Embodiment by this invention is demonstrated.

[System Operation of Second Embodiment]
FIG. 22 is a flowchart showing the rule setting operation of the PUSH type information distribution system in the second embodiment according to the present invention. FIG. 23 is a flowchart showing an information request operation of the PUSH type information distribution system in the second exemplary embodiment of the present invention. FIG. 24 is a flowchart showing the information requesting operation of the PUSH type information distribution system in the second embodiment of the present invention. FIG. 25 is a flowchart showing the information retransmission operation of the PUSH type information distribution system in the second embodiment of the present invention.

  There are a terminal having a terminal ID of 1 (first terminal 310) and a terminal having a terminal ID of 2 (second terminal 320). At first, the terminal state of the first terminal 310 is receivable and the terminal state of the second terminal 320 is Is assumed to be unreceivable. Further, according to the redistribution rule, when the first terminal 310 is in an unreceivable state, the content by the information request “http://ntt.co.jp?id=10” of the first terminal 310 has been distributed. In this case, it is assumed that the second terminal 320 is described as being redistributed to the second terminal 320 if it can be received.

  Next, a terminal having a terminal ID of 1 (first terminal 310) requests “content A” by an information request “URI: http://ntt.co.jp?id=10”. However, after the information request, the terminal having the terminal ID of 1 (first terminal 310) enters a terminal state where reception is impossible. Thereafter, the terminal status of the terminal with the terminal ID 2 (second terminal 320) changes to receivable, and the information is redistributed to the terminal with the terminal ID 2 (second terminal 320). In the description of the second embodiment, such an operation is realized.

  As shown in FIGS. 22 to 25, the PUSH type information distribution process includes three processes: rule setting, information request, and information retransmission.

  In the setting operation in FIG. 22, a re-distribution rule that determines a distribution destination is set (step S121), a storage time boundary value is set (step S122), and a terminal state is registered in the terminal state DB 260 (step S123). In this example, as shown in rule 1 in FIG. 16, the user enters “http: // ntt.” From the terminal with terminal ID = 1 when the terminal with terminal ID = 1 cannot be received. Co-jp? id = 10 "If the information requested by the information request has been distributed, a redistribution rule is described that" if terminal ID = 2 is in a receivable state, redistribute to the terminal with terminal ID = 2 " At this time, it is assumed that no other rule is described. Next, a storage time boundary value in the information DB 2703 of the information buffer 270 is set. In this example, it is set to 3 hours.

  Next, the user operates the terminal to register that the first terminal 310 becomes unreceivable, and registers it in the terminal state DB 260 by the state registration unit 3003. In this example, the first terminal 310 is set to be receivable and the second terminal 320 is set to be unreceivable. At this time, the terminal that registers the terminal state in the terminal state DB 260 may be a terminal other than the first terminal 310. Further, when the third terminal 330 having the terminal monitoring unit 3302 and the state registration unit 3301 functioning like a sensor is used, the terminal is automatically registered in the terminal state DB 260 without the user manually registering in the terminal state DB 260. It is possible to register the state.

  In the information request operation in FIG. 23, an information request by the first terminal 310 (step S124) and an information request by the virtual terminal 220 are performed (step S125). The information request by the first terminal 310 and the information request by the virtual terminal 220 have the same configuration and processing as in the first embodiment.

  In the information requesting operation in FIG. 24, the redistribution destination determination device 230 receives the rule / terminal state change notification from the terminal such as the first terminal 310, and grasps the distribution destination and the state of the terminal to write (step S126). An information request is made by the virtual terminal 220 (step S127), and details thereof will be described with reference to FIG.

  In the information re-transmission operation of FIG. 25, a flow in which the information re-distribution unit 210 re-distributes information provided from the information distribution server 110 to each terminal will be described.

  The information redistribution unit 210 waits for an information request from the terminal (step S128), and upon receiving the information request, the virtual terminal 220 receives the information from the information distribution server 110 and sends the information to the redistribution destination determination device 230. Is the same as in the first embodiment (step S131), but the information buffer 270 monitors the retention period of the information accumulated in the time that has been in the information buffer 270 (step S129). If the period has passed, it is discarded (step S130). The information that the virtual terminal 220 passes to the re-distribution destination determination device 230 includes 1 as a request source terminal ID, “http://ntt.co.jp?id=10” as an information request URI, “content” A ”is included (see FIG. 26D).

  When receiving the information transfer from the virtual terminal 220 (step S132), the redistribution destination determination device 230 acquires the redistribution rule from the rule DB 240 and the terminal state from the terminal state DB 260 by the rule comparison unit 2303 ( Steps S133 and S135), the request source terminal ID of the information, the terminal state, and the redistribution rule are compared, and the “request source condition” and the “distribution destination condition” are confirmed to determine the distribution destination (steps S134 and S136). . In step S134, the “not applicable” operation is the same as the operation of the first embodiment mobile phone.

  For example, since both the first terminal 310 and the second terminal 320 are currently in a state where reception is impossible, the rule comparison unit 2303 recognizes that there is no terminal that can be distributed. When there is no terminal that can be distributed, the rule comparison unit 2303 transfers the information from the information distribution server 110 to the information buffer 270 (step S137).

  Thereafter, the information buffer 270 stores the received information in the information DB 2703, and adds the storage time to the information at that time. Therefore, when the information stored in the information DB 2703 is stored at, for example, 10:00, the storage time is 10:00, the requesting terminal ID is 1, and the information request URI is “http://ntt.co .jp? id = 10 ”and“ content A ”are included (see FIG. 26F).

  Thereafter, the terminal state of the second terminal 320 is changed to be receivable, and the terminal state registration unit 3003 of the terminal changes the terminal state of the second terminal 320 in the terminal state DB 260 to be receivable. The terminal state DB 260 detects a change in the terminal state and sends a change notification to the redistribution destination determination device 230. The redistribution destination determination device 230 that has received the change notification sends an information carry-out request to the information buffer 270.

  In response to the information carry-out request, the information buffer 270 transfers the information stored in the information DB 2703 to the redistribution destination determination device 230. At this time, the current time is acquired and compared with the storage time included in the information to calculate the period during which the information is stored in the information DB 2703, and the information stored for a certain period or more is discarded ( Steps S128 to S130). In this example, when information is transferred at time 11:00, the storage period is 1 hour, which does not exceed the storage time boundary value of 3 hours, and is not discarded.

  Then, the information is received by the information transfer accepting unit 2301 of the redistribution destination determination device 230, and the distribution destination terminal ID is determined again as the second terminal 320 by the rule comparison unit 2303.

  Thereafter, the processing and configuration until the information delivered from the information buffer 270 is redistributed to the second terminal 320 is the same as in the first embodiment (steps S139 to S140).

  According to the PUSH type information distribution system configured as described above, the user can register the terminal state and perform the PUSH redistribution considering the state of each terminal according to the redistribution rule. Moreover, even if the information has been distributed when no receivable terminal exists, the information can be redistributed when a receivable terminal appears.

  According to the present invention, the user can register the terminal state, perform PUSH redistribution considering the state of each terminal according to the redistribution rule, and even information distributed when there is no receivable terminal exists. When a receivable terminal appears, information can be redistributed, which is useful for expanding the application range of existing presence services.

110 Information distribution server 210 Information redistribution unit 220 Virtual terminal 230 Redistribution destination decision device 240 Rule DB
250 PUSH redistribution device 260 Terminal state DB
270 Information buffer 310, 320, 330 Terminal 1101 Information providing unit 1102 Information request receiving unit 1103 Information distributing unit 2201 Information requesting unit 2202 Information distribution receiving unit 2203 Information request receiving unit 2204 Requesting terminal ID adding unit 2205 Requesting terminal ID database ( DB)
2206 Information transfer unit 2301 Information transfer reception unit 2302 Rule comparison unit 2303 Distribution destination terminal ID addition unit 2304 Information transfer unit 2305 Terminal state acquisition unit 2306 Information carry-out request unit 2501 Information transfer reception unit 2502 PUSH redistribution unit 3001 Information request unit 3002 Information Reception unit 3003 Status registration unit 3301 Status registration unit 3302 Terminal monitoring unit

Claims (6)

A PUSH type information distribution system that enables PUSH distribution to a terminal different from a terminal that requests content distribution from a content distribution server,
An information request for requesting content distribution from the content distribution server is received from the first terminal, and the content distributed from the content distribution server is sent to at least one second terminal different from the first terminal. An information redistribution unit that enables distribution,
The information redistribution unit
A virtual terminal that manages the correspondence between the first terminal that is the request source terminal of the information request and the content related to the information request, and performs information transfer with the request source terminal ID that is the identifier of the request source terminal added to the content When,
A rule DB that holds a redistribution rule that defines the correspondence between the first terminal as the request source terminal and the second terminal as the redistribution destination terminal;
A terminal state DB that manages a terminal state indicating whether each terminal can receive information;
The information by the first terminal according to the redistribution rule held in the rule DB and the terminal status held in the terminal status DB upon receiving the request source terminal ID and the content included in the information transfer A redistribution destination determination device that determines a second terminal that can receive the information only when it is determined that reception of the information is impossible ;
And PUSH redistribution device for re-distribution of the PUSH type of the content to the second terminal capable of receiving the information,
A PUSH type information distribution system comprising: The information redistribution unit
An information buffer for temporarily storing content distributed from the content distribution server;
The redistribution destination determination device includes:
Means for temporarily storing the content in the information buffer when it is determined that there is no second terminal capable of receiving information based on the redistribution rule and the terminal state; The PUSH type information distribution system according to claim 1.   The terminal registered in the redistribution rule includes a third terminal that detects a terminal state indicating whether each terminal can receive information and registers the terminal state in the terminal state DB. The PUSH type information distribution system according to claim 2. A PUSH type information distribution method in a PUSH type information distribution system that enables PUSH distribution to a terminal different from a terminal that requests content distribution from a content distribution server,
The PUSH type information distribution system receives an information request for requesting content distribution from a content distribution server from a first terminal, and the content distributed from the content distribution server is different from the first terminal. An information redistribution unit that enables distribution to at least two or more second terminals,
The information redistribution unit includes a rule DB that holds a redistribution rule that defines a correspondence between a virtual terminal, a first terminal that is the request source terminal, and a second terminal that is a redistribution destination terminal, and each terminal stores information. A terminal state DB for managing a terminal state indicating whether or not reception is possible, a redistribution destination determination device, and a PUSH redistribution device;
The processing procedure of the information redistribution unit is as follows:
Information in which the virtual terminal manages the correspondence between the first terminal that is the request source terminal of the information request and the content related to the information request, and the request source terminal ID that is the identifier of the request source terminal is added to the content A step of transferring,
The redistribution destination determination device receives the request source terminal ID and the content included in the information transfer, and depends on a redistribution rule held in the rule DB and a terminal state held in the terminal state DB Determining a second terminal capable of receiving the information only when it is determined that the information cannot be received by the first terminal ;
By the PUSH redistribution device, and performing the re-distribution of the PUSH type of the content the information to the receivable said second terminal,
A PUSH type information distribution method comprising: The information redistribution unit
Comprising an information buffer for temporarily storing content distributed from the content distribution server;
The processing procedure of the redistribution destination determination device is as follows:
If it is determined that there is no second terminal capable of receiving information based on the redistribution rule and the terminal status, temporarily storing the content in the information buffer;
The PUSH type information distribution method according to claim 4, comprising: The PUSH type information distribution system includes a third terminal,
Including a step of detecting, by the third terminal, a terminal state indicating whether or not each terminal can receive information for the terminal registered in the redistribution rule and registering the terminal state in the terminal state DB. The PUSH type information delivery method according to claim 5, wherein the push type information delivery method is characterized.

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