JP2007249557A - Group purchase system, group purchase server, group purchase method, group purchase program and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a plurality of users to edit the information of group purchase articles and make a decision with each other, in real time. <P>SOLUTION: When the information of a web page displayed at each of user terminals 20A-20C participating in the session of group purchase is edited or merchandise is decided inside the web page, the user terminals 20A-20C are notified of the fact that editing is performed or the merchandise is decided. That is, by utilizing a cooperation database 14, participants of a group share page information together with the members of the group and respectively add and change purchase articles or the like without appointing a representative. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a joint purchase system, a joint purchase server, a joint purchase method, a joint purchase program, and a recording medium suitable for joint purchase through a network.

  In the current group joint purchase, each representative purchases after the “representative” inputs the purchased item. In the current joint purchase system, each purchaser approves the result after authenticating / logging in with the representative's account and determining the content of the purchase. That is, in the current joint purchase system, if multiple people make a joint purchase while consulting in real time on the network, there is a possibility that a renewal conflict may be derived. Each joint purchaser purchases after entering.

  As a method of joint purchase, Patent Document 1 proposes a method of product sales and sales promotion that promotes the purchase or presentation of products or groups of products used for gifts for celebrations, etc. via the Internet. is doing.

  Also, in Patent Document 2, the information on the sale place solicited from the applicant for sale is disclosed, the applicant for joint purchase of this sale place is solicited, the division of the sale place is adjusted among a plurality of applicants for joint purchase, A purchaser group is established by a person who has agreed to the land parcel proposal, and a proposal is made for a joint purchase support method for buying and selling land between the purchaser group and the applicant for sale.

JP 2001-344483 A JP 2002-259532 A

  However, in the product sales and sales promotion method shown in Patent Document 1 described above, a jointly purchased item is presented and communication between the presenter and the presentee is supported. There has been a problem that a plurality of users cannot edit information in real time and make decisions.

  Moreover, in the land joint purchase support method shown in the above-mentioned Patent Document 2, the purchase applicant confirms the division plan at the joint purchase applicant side terminal, and requests / changes and approvals to the division plan, etc. The result of the confirmation is sent directly on the e-mail or web page, and the plan is adjusted by the coordinator terminal while accepting the received result from each joint purchase applicant. There is a problem that information on purchased items cannot be edited and determined by a plurality of users in real time.

  In addition, when editing information in real time, for example, as disclosed in Japanese Patent Application Laid-Open No. 2003-526275, a method using a group communication network is also conceivable. Linking function with the database that stores the database is required.

  The present invention has been made in view of such a situation, and an object thereof is to provide a joint purchase system, a joint purchase server, a joint purchase method, a joint purchase program, and a recording medium that can solve the above-described problems. And

The joint purchase system of the present invention is a joint purchase system for performing joint purchase through a network, and is used by a user participating in a joint purchase session and a joint purchase article related to the joint purchase session. A joint purchase server that provides the information to the user terminal via a website, wherein the joint purchase server stores product information that can be purchased via the website; At least, a linked database that manages the product information to be purchased in response to access of the user terminal, and is generated for each of the user terminals participating in the session, and is referenced by the user terminal in the session, The contents of the web page and the information for each user who uses the user terminal are maintained. The user correspondence means creates the web page in response to an access from the user terminal, and edits information on the web page or determines a product in the web page. The cooperation database is notified that the editing has been performed or the determination of the product has been performed, and the cooperation database has received editing for the other user correspondence means upon receipt of the notification. Alternatively, it is notified that the product has been determined.
Further, the user handling means displays a user part customized for each user on the web page and a shared part shared by a group of users participating in the joint purchase session, and from the user part The selection operation can be accepted.
In addition, a real-time data synchronization device that participates in the same session as the user terminal and synchronously transmits media data to the user terminal, that there has been an edit from the cooperation database, or that the product has been determined And a dummy client for instructing the real-time data synchronization apparatus to perform synchronous transmission of the media data.
In addition, a group management device that manages a group ID for identifying users participating in the same session is provided, and the cooperation database causes the dummy client to participate in the session based on the group ID. be able to.
In addition, a billing database may be provided in which billing information on products determined by the joint purchase is stored for each user.
Further, at least the user handling means can be arranged separately on the network.
Further, the user handling means displays an individual part for each user and a common part shared by a group of users participating in the joint purchase session on the web page, and setting operation from the individual part is performed by the user part. It can be reflected in the common part.
The joint purchase server of the present invention is a joint purchase server that provides information on joint purchase articles related to a joint purchase session to a user terminal via a website, and is a product that can be purchased via the website. A sales database that stores information, a linked database that manages at least the product information to be purchased according to the access of a user terminal used by a user participating in a joint purchase session, and the session participating in the session A user handling means for holding at least the contents of a web page and information for each user using the user terminal, which is generated for each user terminal and referenced by the user terminal in the session; The means creates the web page in response to access from the user terminal, and When the information on the page is edited or the product is determined in the web page, the cooperation database is notified that the editing has been performed or the product has been determined. Is received, the other user correspondence means is notified that the editing has been performed or that the product has been determined.
Further, the user handling means displays a user part customized for each user on the web page and a shared part shared by a group of users participating in the joint purchase session, and from the user part The selection operation can be accepted.
The joint purchase method of the present invention is a joint purchase method for performing joint purchase through a network, which is generated for each user terminal participating in a joint purchase session and is referred to by the user terminal in the session. A step of holding at least the content of the web page and information for each user who uses the user terminal, and creating the web page in response to access from the user terminal, and editing the information on the web page or the web When the product is determined in the page, the step of notifying that the editing has been performed or the determination of the product has been performed, and that the editing has been performed or the determination of the product has been performed. This is notified to the user terminal.
In addition, the web page includes a step of displaying a user part customized for each individual user and a shared part shared by a group of users participating in the joint purchase session, and selecting from the user part Operations can be accepted.
In addition, based on the step of participating in the same session as the user terminal, synchronously transmitting media data to the user terminal, and notification that the editing has been performed or the product has been determined. Instructing synchronous transmission of the media data by a client.
In addition, the method may include a step of managing a group ID for identifying users participating in the same session, and a step of causing the dummy client to participate in a session based on the group ID.
In addition, it is possible to have a step of storing the billing information of the product determined by the joint purchase for each user.
A step of displaying an individual part for each user and a common part shared by a group of users participating in the joint purchase session on the web page, and a setting operation from the individual part includes the common part Can be reflected in
The joint purchase program of the present invention is a joint purchase program for executing a joint purchase method for performing joint purchase through a network, and is generated for each user terminal participating in a joint purchase session. The step of holding at least the contents of the web page referred to by the user terminal and the information for each user who uses the user terminal, and creating the web page according to the access from the user terminal, Editing information or determining a product in the web page, and notifying that the editing has been performed or the product has been determined. The user terminal is notified that the product has been determined.
In addition, the web page includes a step of displaying a user part customized for each individual user and a shared part shared by a group of users participating in the joint purchase session, and selecting from the user part Operations can be accepted.
In addition, based on the step of participating in the same session as the user terminal, synchronously transmitting media data to the user terminal, and notification that the editing has been performed or the product has been determined. Instructing synchronous transmission of the media data by a client.
Further, the method may include a step of managing a group ID for identifying users participating in the same session, and a step of causing the dummy client to participate in a session based on the group ID.
In addition, it is possible to have a step of storing the billing information of the product determined by the joint purchase for each user.
A step of displaying an individual part for each user and a common part shared by a group of users participating in the joint purchase session on the web page, and a setting operation from the individual part includes the common part Can be reflected in
The recording medium of the present invention is characterized in that the joint purchase program according to any one of claims 16 to 21 is recorded.
In the present invention, when editing of information on a web page displayed for each user terminal participating in a joint purchase session or determination of a product in the web page, the editing is performed or the determination of the product is performed. Is notified to the user terminal.

  According to the present invention, when editing of information on a web page displayed for each user terminal participating in a joint purchase session or determination of a product within the web page, the editing is performed or the product Since the user terminal is notified that the determination has been made, the information on the joint purchase article can be edited by a plurality of users in real time.

  In the present embodiment, in the joint purchase, a method can be realized in which a voice call or the like is performed while viewing the same screen, and the combination and quantity of purchased items can be “mutually edited”. It also realizes a method of mutually confirming the approval status on the spot. In addition, by synchronizing with the session of the group call, it is possible to realize a method of performing joint purchase while consulting in real time. Therefore, in cooperation with a PoC (Push-to-Talk over Cellular) system, real-time notification of update information, linkage of group information, linkage of floor information, and the like are performed.

  Here, PoC is a technology that uses a mobile phone like a transceiver, and enables 1-to-N communication. For example, the service is provided by Nextel in the United States. There are several PoC implementation methods, but the basic mechanism is the same, and consists of a PoC server having a session management function and a floor control function, and a GLMS (Group List Management Server) that manages a group list.

  Here, as shown in FIG. 1 described later, the real-time data synchronization apparatus 30 in this embodiment corresponds to a PoC server, and the group management apparatus 31 corresponds to a GLMS. However, in the present embodiment, by making PoC into multimedia, when it becomes possible to share web browsing by a group, it is possible to perform joint purchase while performing multimedia communication in the group. is there. In other words, during a PoC communication, all members share a web search screen and decide what items to use in common.

  Examples of the present invention will be described below. FIG. 1 is a block diagram showing an embodiment of the joint purchase system of the present invention. As shown in the figure, the joint purchase system includes a group purchase site 10, an order system 15, a charging DB (database) 16, user terminals 20A to 20C, a dummy client 21, a real-time data synchronization device 30, and a group management device 31. ing.

  The group purchase site 10 is connected to the user terminals 20A to 20C and the dummy client 21 by a network 40. The user terminals 20 </ b> A to 20 </ b> C and the dummy client 21 are connected to the real-time data synchronization apparatus 30 through a network 41. The networks 40 and 41 perform transmission and reception of data packets in real time, and for example, a communication line configured by the IP protocol can be used.

  The group purchase site 10 is a device that provides a group purchase service to the users A to C, and a web server (group purchase server) for group purchase that generates a web page in response to a request from the users A to C. As realized.

  The group purchase site 10 includes user-corresponding function units 11a to 11c, a sales DB (database) 12, a user DB (database) 13, and a linkage database 14.

  The user-corresponding function units 11a to 11c are generated for each of the users A to C participating in the session, and hold the contents of the web page referred to by the users A to C in the session, information about each user A to C, and the like. To do. Further, the user-corresponding function units 11a to 11c read information registered in the sales DB (database) 12, the user DB (database) 13, and the cooperation database 14 and display information on the web page to be presented to the users A to C. Generate.

  The sales DB (database) 12 stores information on products that can be purchased by this system (photos, descriptions, names, specifications, etc.), information such as prices and stocks. The user DB (database) 13 stores preference information, account information, authentication information, and the like corresponding to the user IDs of the users A to C.

  The cooperation database 14 stores information for controlling joint purchase within a session. That is, data related to joint purchase data based on the session ID is stored. In addition, the cooperation database 14 notifies the users A to C that the information on the web page has been changed by notifying the dummy client 21 that the data related to the joint purchase data has been stored. Is possible.

  The order system 15 executes an order to the side handling the product based on the product determined by joint purchase. The charging DB (database) 16 stores charging information for the users A to C.

  The user terminals 20 </ b> A to 20 </ b> C are owned by the respective users A to C, and are terminals having a function of accessing the group purchase site 10 via the network 40. The user terminals 20A to 20C need only have a function of browsing at least a web page, and a personal computer, a mobile phone, a PDA, or the like can be used.

  The dummy client 21 participates in the session in the real-time data synchronization apparatus 30 in the same manner as the user terminals 20A to 20C, and the real-time data synchronization apparatus indicates that the data on the web page being referred to has been updated by an instruction from the cooperation database 14. 30, the user terminals 20 </ b> A to 20 </ b> C of the users A to C are notified. The dummy client 21 can also perform operations such as receiving information on who has the floor in the session.

  The real-time data synchronization device 30 is a device capable of exchanging media data in real time, regarding a plurality of users A to C as one group. The media data includes web page data, a pointer to the web page, audio data, a whiteboard, and the like. The real-time data synchronization apparatus 30 can also be used for sharing communication for prompting access when a shared and referenced web page is changed.

  Specifically, the real-time data synchronization device 30 is a device that extends Push To Talk over Cellular with multimedia so that each subscriber can be notified of text data and other media information. That is, data transmission within a session in PTT (push-to-talk) can be sent only by a person who has acquired a transmission right called a floor at the same time, and the data sender at that time is specified. It is possible to do.

  In addition, a plurality of floors can be used depending on the media, or a plurality of floors can be used to send data to users A to C at the same time. This function is assumed based on what is discussed in the PoC1 working group of the standardization organization OMA and is well known in general.

  The group management device 31 is a device that stores information such as a group ID of a group used in the real-time data synchronization device 30. That is, it is possible to obtain a list of users A to C participating in the session based on the group ID stored in the group management device 31.

  Next, the joint purchase method will be described. In the following description, it is assumed that the users A and B among the users A to C access the group purchase site 10.

  First, as shown in FIG. 2, each user A and B accesses the group purchase site 10 (step S1). At that time, authentication using each user ID is performed. At that time, the group purchase site 10 is notified of a group ID, which is an identifier for identifying a session currently generated by the real-time data synchronization apparatus 30.

  Next, the group purchase site 10 designates the group ID, accesses the group management apparatus 31, and acquires a list of users A and B participating in the session and other users C who can participate in the session ( Step S2).

  Further, the group purchase site 10 designates the group ID to the participating users A and B of each session, and notifies the web page to be referred to via the dummy client 21 and the real-time data synchronization device 30 (step). S3). That is, the real-time data synchronization apparatus 30 reads the group participants corresponding to the group ID from the group management apparatus 31 and notifies each participating member.

  Here, when the users A and B access the group purchase site 10 by specifying the notified web page, the group purchase site 10 generates the user corresponding function units 11a and 11b corresponding to the users A and B, respectively. Are connected (step S4). The list read from the group management device 31 is sent to the user function units 11a and 11b.

  At this time, the user-corresponding function units 11a and 11b check whether the users A and B are participating in the group according to the user IDs of the connected users A and B or whether they can participate. If the check is not passed, it is judged as NG and the connection is disconnected. Further, the user-corresponding function units 11a and 11b specify the user IDs of the users A and B from the user DB 13 and read and store the user information (step S6).

  Further, the user-corresponding function units 11a and 11b create page information suitable for each user A and B based on the read user information and the product information read from the sales DB 12 (step S7). The data read from the sales DB 12 may reflect the preference data for each of the users A and B included in each user information. As a result, the created page information is composed of two parts: a shared part shared by the group and a user part customized for each user A and B.

  Further, the user corresponding function units 11a and 11b notify the cooperation database 14 that the users A and B have participated in this group session (step S8). Here, the information managed in the linkage database 14 includes a list of product data to be purchased, a list of members participating in joint purchase, an approval status of each person, and designation information with / without charge for each product. These are the users A and B of the delivery destination of the product (the address of the delivery destination is stored in the user-corresponding part) and the status flag (purchase selection state / approval waiting state / procedure completion state).

  Next, the users A and B use the information included in the page information to add, delete, change the quantity of goods to be purchased, specify information with / without charge for each user, etc. , 11b (step S10). It is also possible to change the user part of the web page.

  Upon receiving notification of information editing as described above, the user handling function units 11a and 11b check the validity of the change (step S11), and if there is no problem with the validity, the change information is linked. Notify the database 14.

  When the cooperation database 14 is updated, the cooperation database 14 stores the information in the cooperation database 14 and notifies the user corresponding function units 11a and 11b participating in the session (step S12).

  At this time, each of the user-corresponding function units 11a and 11b re-creates a web page based on the information received from the cooperation database 14. At this time, the cooperation database 14 notifies the dummy client 21 that the data has been changed (step S13). The dummy client 21 notifies the participating members of the group through the real-time data synchronization device 30 that the information has been updated.

  Participating members of the group receive notification from the real-time data synchronization apparatus 30 that the information has been updated (step S14). In response to this, the user corresponding function units 11a and 11b are accessed (step S16). Each of the user-corresponding function units 11a and 11b creates a web page corresponding to each of the users A and B, and sends the web page to the accessing users A and B (step S17).

  Simultaneously, the real-time data synchronizer 30 can communicate with each other to perform conversations, markings, etc. on the shared information, and the operation after (Step S10) should be purchased according to the contents. Repeat until all information is set (step S16).

  When the information to be purchased is set, one of the participating users A and B notifies the decision of purchase to one of the user function units 11a and 11b (step S18). Any one of the user-corresponding function units 11a and 11b notifies the cooperation database 14 of the information (step S19).

  At this time, the linkage database 14 changes the status flag to an approval waiting state. Further, all the approval states are set to “not yet”, and the dummy client 21 is notified of the update of the web page. The dummy client 21 notifies the update of the web page to each of the users A and B using the real-time data synchronization device 30. The users A and B receive the update notification and access the user corresponding function units 11a and 11b.

  The user-corresponding function units 11a and 11b check the cooperation database 14, and create a screen for prompting approval when the status flag is in the approval waiting state and the approval status of the confirmation corresponding to the users A and B is not approved. Then, it is returned to the users A and B (step S19).

  Next, as shown in FIG. 3, the users A and B determine whether or not to approve the web page, and notify the user corresponding function units 11a and 11b (step S20). The user corresponding function units 11a and 11b receive the approval information and update the approval status of each person in the cooperation database 14 (step S21). If approval is made, the status is changed to “done”. The approval information of each person is reflected in the page information of each user A and B. This operation is repeated until the approval for all users A and B is completed (steps S19 to S21).

  When the approval of all the users A and B is completed, the cooperation database 14 notifies the end of approval to each user A and B via the dummy client 21 and the real-time data synchronization device 30 (step S22). Further, the cooperation database 14 notifies the charging DB 16 and the order system 15 of the order information determined as a result, and confirms joint purchase (step S23).

  As described above, in this embodiment, when the information on the web page displayed for each of the user terminals 20A to 20C participating in the joint purchase session is edited or the product is determined in the web page, the editing is performed. Since the user terminals 20A to 20C are notified that there has been a decision or a product has been determined, the information on the joint purchase article can be edited in real time by a plurality of users. it can.

  That is, in this embodiment, by using the linkage database 14, the group participants share the page information with the group members without setting up a representative, and each of them adds, changes, etc. the purchased item. It becomes possible

  Further, in this embodiment, since a mechanism is provided in which each user individually authenticates and approves, there is no need to perform an action in which a specific member performs an input on behalf of the user.

  Further, in this embodiment, since the editing information performed by each user is shared between the users by using the real-time data synchronization device 30, when editing the jointly purchased article, Not only can editing be performed while consulting, it is also possible to prevent data update contention when sharing floor information.

  In this embodiment, it is also possible to add subscribers who have not participated in the current session as members of the joint purchase. In this case, in (step S16) of FIG. 2, the user ID (account at the group purchase site) of the subscriber to be added is notified to the information notified from the user to the user corresponding function unit.

  At this time, when the update of the page is notified to each user by (step S17) in FIG. 2 by the cooperation database 14, the notification is also made to the newly added user. . As a notification method at that time, a new dummy client is generated by using a non-real-time notification method such as e-mail for a newly created group with the added user as a member. A new real time session may be generated and performed in the group.

  In addition, in this embodiment, in addition to the subscribers who are currently participating in the session, it is also possible to add subscribers who can participate in the session and participants who cannot participate in the session but can participate in joint purchases. It is.

  In this case, in (step S16) of FIG. 2, an ID for identifying an account in the group purchase site 10 of the joint purchaser to be added is notified to the information notified to the user corresponding function unit.

  At this time, when the page update is notified to each user by the cooperation database 14 in (step S17) of FIG. 2, the newly added user is also notified. . As a notification method at that time, a non-real-time notification method such as e-mail is used for a group created with the user added to the purchase group as a member, or a new dummy client is generated, A new real-time session may be generated and performed in the group.

  In this embodiment, the case where a mechanism for group purchase is realized in the group purchase site 10 has been described. However, the present invention is not limited to this example, and can be realized by separating the mechanism for group purchase.

  That is, as shown in FIG. 4, the functional unit that notifies the dummy client 21 that the page has been updated from the group purchase site 10 is separated. Here, the functional unit is the group purchase server 17, and the group purchase server 17 is interposed between the group purchase site 10, the user terminals 20 </ b> A to 20 </ b> C, the dummy client 21, and the group management device 31. In addition, the group purchase server 17 is connected to a group purchase state memory 18 in which information such as the participants of the session read out by designating the group ID from the group management device 31 is stored.

  With this configuration, when the user A in the group, for example, accesses to the group purchase server 17 to start the purchase (in this case, the group ID for specifying the group is notified), the group purchase server 17 generates a group account at the group purchase site 10 and obtains a purchase group ID.

  Further, the group purchase server 17 causes the dummy client 21 to participate in the session. Further, the group purchase server 17 reads the session participants by designating the group ID from the group management apparatus 31 and stores them in the group purchase state memory 18. At this time, the dummy client 21 notifies the other users B and C of the purchase group ID information using the real-time data synchronization device 30.

  The users B and C who make other joint purchases specify the purchase group ID based on the received information and access the group purchase server 17. At this time, all participating users A to C establish an authentication relationship with the group purchase server 17 and establish a relationship in which a charge can be collected from the authentication server operator in advance.

  Moreover, the group purchase server 17 returns the page which the user A is viewing to the user B based on the specified purchase group ID for the access of the user B, for example. When any of the participating users A to C operates by clicking a link on the joint purchase page and operates the purchase information on the group purchase server 17, the information is used as an operation of the group account. The group purchase site 10 is accessed. At this time, the web page obtained as a result of the access is returned from the group purchase site 10 to any of the accessed users A to C.

  The group purchase server 17 notifies the dummy client 21 that the web page has been updated. The dummy client 21 notifies the participating users A to C using the real-time data synchronization device 30. Upon receiving this notification, each participating user A to C accesses the group purchase server 17 and obtains updated information. Then, all the products to be purchased are selected by repeating the above operation.

  When the purchase is determined, one of the participating users A to C inputs the purchase determination and notifies the group purchase server 17 of the input. The group purchase server 17 detects the input of the purchase decision, and in this case, without accessing the group purchase site 10, sends a confirmation page to the other participating users A to C, generates a dummy. The client 21 is notified. The dummy client 21 notifies the participating users A to C via the real-time data synchronization device 30. The group purchase server 17 determines that the state of the group purchase status memory 18 is being approved. Each user A to C receives the notification and accesses the confirmation page.

  The users A to C refer to the confirmation page and input whether to approve the joint purchase. The group purchase server 17 writes the approval result in the group purchase state memory 18. Further, the group purchase server 17 confirms the group purchase state memory 18, and when approval is obtained from all the users A to C, the group purchase server 17 accesses the group purchase site 10 with purchase decision information, and places an order. determine. The group purchase server 17 may hold the order without confirming the order, and confirm the order after the necessary charge is recorded in the charge DB 16 described later. This makes it possible to avoid the risk of fee collection.

  Further, the group purchase server 17 associates the confirmed purchase information with the group participants, distributes the necessary charge to each group participant by an appropriate method, and records it in the charge DB 16. The purchase server operator charges each of the users A to C according to the above charging DB 16.

  In addition, the group purchase server 17 performs payment on behalf of the group account. As a result, it is possible to separately operate a business entity that provides the joint purchase function and a business entity that operates the group purchase site 10.

  In the present embodiment, it is also possible to realize a mechanism that prevents the competition of the designation operations of the users A to C in (step S10) of FIG. 2 described above. That is, as shown in FIG. 5, the operation screen 22 of the users A to C is divided into a common unit 22a and an individual unit 22b, and each user A to C selection, data reference, product selection setting, etc. It is implemented as an operation on the data of the unit 22b. Thereby, when any of the users A to C performs an operation for sharing information with respect to the real-time data synchronization apparatus 30, the reflection to the common information is performed.

  The sequence in this case will be described with reference to FIG. That is, when the user A edits the purchase information list of the individual unit 22b and presses the determination button attached to the page, the user A wants to make additional purchases, for example, to the user corresponding function unit 11a. A list of products considered to be notified is sent (step S30).

  The user corresponding function unit 11a once holds the information of the list, but does not reflect it as common information. Also, as page information for the user A, the information edited only by the individual unit 22b is sent.

  Next, when the user A presses a floor acquisition button (not shown), a signal for data synchronization is notified to the real-time data synchronization apparatus 30 (step S31). If the other users B and C are not using it, the floor right is acquired, and if it is used, it is rejected. When the floor right is acquired, the information is notified to the cooperation database 14 through the dummy client 21.

  The cooperation database 14 receives the floor acquisition information, accesses the user corresponding function unit 11a corresponding to the user A who has acquired the floor right, reads the update list stored therein, and reads the common purchase list. Is updated (step S32).

  Receiving the floor acquisition notification, the users B and C other than the user A access the user corresponding function units 11b and 11c (step S33). Each of the user-corresponding function units 11b and 11c takes the difference between the updated common purchase information and the individually edited purchase information, and if there is a match, the users B and C A symbol or the like indicating that the data has already been registered is assigned to the individual part 22b of the screen to call attention.

  In this way, the information that each user A to C individually edits, references, and selects is overwritten, changed, or even discarded due to the floor acquisition of other users A to C and the change of common data. It can be used continuously without any problems.

The present invention can be applied to a system that shares information between a plurality of users in real time.
It is applicable to.

It is a block diagram which shows one Example of the joint purchase system of this invention. It is a sequence diagram for demonstrating the joint purchase method in the joint purchase system of FIG. It is a sequence diagram for demonstrating the joint purchase method in the joint purchase system of FIG. It is a block diagram which shows the other joint purchase system at the time of changing the structure of the joint purchase system of FIG. It is a figure which shows an example of the operation screen in the user terminal of FIG. It is a sequence diagram for demonstrating the other joint purchase method in the joint purchase system of FIG.

Explanation of symbols

10 Group Purchase Sites 11a to 11c User Corresponding Function Unit (User Corresponding Means)
14 Cooperation database 15 Order system 16 Billing DB
17 Group purchase server 18 Group purchase status memory 20A to 20C User terminal 21 Dummy client 30 Real-time data synchronization device 31 Group management device 40, 41 Network

Claims (22)

A joint purchase system for joint purchase via a network,
A user terminal for use by users participating in a joint purchase session;
A joint purchase server for providing information on joint purchase articles related to the joint purchase session to the user terminal via a website;
The joint purchase server is
A sales database storing product information that can be purchased via the website;
At least a linked database that manages the product information to be purchased according to access of the user terminal;
User correspondence means for storing at least the contents of a web page and information for each user using the user terminal, which is generated for each user terminal participating in the session and is referred to by the user terminal in the session And
The user handling means creates the web page in response to an access from the user terminal, and when the information on the web page is edited or a product is determined in the web page, the editing is performed or Notifying the linked database that the product has been determined,
Upon receiving the notification, the cooperation database notifies the other user-corresponding means that the editing has been performed or the product has been determined.   The user handling means displays a user part customized for each user on the web page and a shared part shared by a group of users participating in the joint purchase session, and selects from the user part The joint purchase system according to claim 1, wherein an operation is received. A real-time data synchronization apparatus that participates in the same session as the user terminal and synchronously transmits media data to the user terminal;
A dummy client for instructing the real-time data synchronization apparatus to perform synchronous transmission of the media data based on a notification that editing has been performed from the cooperation database or that the product has been determined. The joint purchase system according to claim 1 or 2, characterized in that A group management device for managing a group ID for identifying users participating in the same session;
The joint purchase system according to claim 3, wherein the cooperation database causes the dummy client to participate in a session based on the group ID.   The joint purchase system according to any one of claims 1 to 4, further comprising: a charge database in which charge information of a product determined by the joint purchase is stored for each user.   The joint purchase system according to any one of claims 1 to 5, wherein at least the user handling means is arranged separately on the network.     The user handling unit displays an individual part for each user and a common part shared by a group of users participating in the joint purchase session on the web page, and a setting operation from the individual part is performed by the common part. The joint purchase system according to claim 1, wherein the joint purchase system is reflected on the system. A joint purchase server that provides information on joint purchase articles related to a joint purchase session to a user terminal via a website,
A sales database storing product information that can be purchased via the website;
A linked database for managing the product information to be purchased in response to access of a user terminal used by a user who participates in at least a joint purchase session;
User correspondence means for storing at least the contents of a web page and information for each user using the user terminal, which is generated for each user terminal participating in the session and is referred to by the user terminal in the session And
The user handling means creates the web page in response to an access from the user terminal, and when the information on the web page is edited or a product is determined in the web page, the editing is performed or Notifying the linked database that the product has been determined,
Upon receiving the notification, the cooperation database notifies the other user correspondence means that the editing has been performed or the product has been determined.   The user handling means displays a user part customized for each user on the web page and a shared part shared by a group of users participating in the joint purchase session, and selects from the user part The joint purchase server according to claim 8, wherein an operation is received. A group buying method for group buying through a network,
Holding at least the contents of the web page and the information for each user using the user terminal generated for each user terminal participating in the joint purchase session and referenced by the user terminal in the session; ,
The web page is created in response to an access from the user terminal, and when the information on the web page is edited or the product is determined in the web page, the editing is performed or the product is determined. And a step of notifying that
The joint purchase method, wherein the user terminal is notified that the editing has been performed or the product has been determined. Displaying the user site customized for each individual user on the web page and the shared site shared by a group of users participating in the joint purchase session,
The joint purchase method according to claim 10, wherein a selection operation from the user part is accepted. Participating in the same session as the user terminal, and synchronously transmitting media data to the user terminal;
12. The method of instructing synchronous transmission of the media data by a dummy client based on a notification that the editing has been performed or the product has been determined. How to buy jointly. Managing a group ID for identifying users participating in the same session;
The joint purchase method according to claim 12, further comprising a step of causing the dummy client to participate in a session based on the group ID.   14. The joint purchase method according to claim 10, further comprising a step of storing, for each user, billing information for a product determined by the joint purchase.     A step of displaying an individual part for each user and a common part shared by a group of users participating in the joint purchase session on the web page, and a setting operation from the individual part is reflected in the common part The joint purchase method according to claim 10, wherein the joint purchase method is performed. A group buying program that implements a group buying method for group buying over a network,
Holding at least the contents of the web page and the information for each user using the user terminal generated for each user terminal participating in the joint purchase session and referenced by the user terminal in the session; ,
The web page is created in response to an access from the user terminal, and when the information on the web page is edited or the product is determined in the web page, the editing is performed or the product is determined. And a step of notifying that
The joint purchase program, wherein the user terminal is notified that the editing has been performed or the product has been determined. Displaying the user site customized for each individual user on the web page and the shared site shared by a group of users participating in the joint purchase session,
The joint purchase program according to claim 16, wherein a selection operation from the user part is accepted. Participating in the same session as the user terminal, and synchronously transmitting media data to the user terminal;
18. A step of instructing synchronous transmission of the media data by a dummy client based on a notification that the editing has been performed or the product has been determined. Joint purchase program. Managing a group ID for identifying users participating in the same session;
The group purchase program according to claim 18, further comprising a step of causing the dummy client to participate in a session based on the group ID.   20. The joint purchase program according to any one of claims 16 to 19, further comprising a step of storing, for each user, billing information for a product determined by the joint purchase.     A step of displaying an individual part for each user and a common part shared by a group of users participating in the joint purchase session on the web page, and a setting operation from the individual part is reflected in the common part The joint purchase program according to any one of claims 16 to 20, wherein the joint purchase program is performed.   22. A recording medium on which the joint purchase program according to claim 16 is recorded.

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