JP2003044713A - System, method and program for competitive bidding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To transact a transaction target object at an appropriate price. SOLUTION: The highest bidding price in the first competitive bidding is checked to be released, and second bidding is received for a fixed period. Second bidding prices are sent by some buyers, and if a certain buyer offer a bid with an amount surpassing the highest bidding price in the first bidding (S401 and S402), the buyer who presents the highest amount among second bids is decided to a successful bidder for the transaction target object (S403). Further, it is decided whether there is another second bid that offers an amount surpassing the first highest bidding price exists (S404). If there is no second bid that surpasses the first highest bidding price, the second highest bidding price that is bid by the successful bidder is decided to be a successful bidding price (S405). If there is another second bid that surpasses the first highest bidding price, the lower price between the bidding price of the successful bidder and a price of 110% of the second bidding price is decided to be a successful bidding price (S406).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a competitive bidding system for establishing a transaction of an object to be traded (including intangibles) by competitive bidding, and more particularly to a system suitable for conducting competitive bidding through a network.

[0002]

2. Description of the Related Art In recent years, online transactions for buying and selling an object to be traded on a website via the Internet have become popular. There are an auction system and a competitive bidding system as a trading form by such an online transaction. Due to the characteristics of the Internet, anyone can participate in these online transactions in any form.

However, since transactions are carried out in an open environment in this way, it is often the case that they do not know each other with whom the transactions have been established. For this reason, there are many troubles such as that the transaction object is not delivered or the fee is not paid. In order to avoid such troubles, some websites limit the number of people who can participate in online transactions to pre-registered members.

[0004]

However, even in the case of membership-based online transactions, there are some people who use pseudonyms to register as members, which is not a sufficient measure to avoid troubles. On the other hand, if the personal authentication at the time of member registration is made strict, the member registration procedure becomes complicated, which makes it difficult for members to gather. After all, conventional internet trading sites have not fully achieved the task of ensuring safe use by many people.

[0007] Even if the member-only online transaction site is not monitored, the buyer cannot know what is listed as a transaction object. Without regular monitoring within a shorter period than the bidding period, you will not be able to participate in the trading process even if your desired item is listed as a trading object. In addition, when the item desired by oneself is listed as the transaction object, the transaction object may be presented with a price that exceeds the proper price, resulting in a loss.

[0006] On the other hand, it is difficult for the seller to predict how much demand there is for the item to be sold as a transaction object. In the case of online transactions in which the seller side presents the price (selling price itself or the lowest price), even if there is demand for the traded object itself, the price offered by the seller exceeds the proper price and the buyer cannot attach In some cases. In addition, if the seller completes the transaction without presenting the price at all, the transaction object may have to be delivered at a price lower than the proper price attached by the buyer.

It is an object of the present invention to provide a competitive bidding system or the like that enables traded objects to be traded at an appropriate price.

[0008]

In order to achieve the above object, the competitive bidding system according to the first aspect of the present invention is
The transaction object receiving means for receiving the information on the transaction object presented by the first trader and the information on the transaction object received by the transaction object receiving means are one or more The first disclosure means to be disclosed to the second trader for bidding, and one or more second traders bid on the transaction object based on the information on the trade object disclosed by the first disclosure means. First bid price receiving means for receiving the bid price within a predetermined period, and bid price extracting means for extracting a bid price showing a limit value from the bid prices received by the first bid price receiving means, Second publishing means for publishing the bid price indicating the limit value extracted by the bid price extracting means so as to allow one or more second traders to bid on the transaction object; and the second publication. Show the limits published by the instrument A second bid receiving means for receiving the price of one or more buyers based on the bid and bid on each said transaction object within a predetermined time period, the first, second
And a successful bid determination means for making a determination regarding the successful bid of the transaction object based on the received bid prices.

In the above-mentioned competitive bidding system, a bid is placed on the object to be traded twice, but before the second bid, the first bid is made.
The first bid result (bid price indicating the limit value) received by the bid price receiving means of is published. The second trader is
Since the final bid price can be determined in the second bid based on the result of the first bid, the transaction price is optimized. Also, the first trader can expect to have a bid at a more favorable price by conducting the second bid.

In the above competitive bidding system, the successful bid determining means has a bid price received by the second bid price receiving means that exceeds the bid price indicating the limit value extracted by the bid price extracting means. In this case, the second trader who bids at the bid price showing the limit value among the bid prices received by the second bid price receiving means can be determined as the successful bidder.

In this case, the successful bid determining means further includes, in addition to the determined successful bidder, the bid price received by the second bid price receiving means, the bid price indicating the limit value extracted by the bid price extracting means. If there is a bid price that exceeds the bid price, the winning bid price can be determined based on the bid price next to the limit price in the bid prices received by the second bid price receiving means.

When the winning bid price is determined in this way,
Even if one of the second traders bids at a considerably high price (or a low price), the winning bid is determined based on the next bid price, so that the trading price is optimized. On the other hand, the first trader can also expect that a very high (or low) bid will be made due to such a mechanism for determining the winning bid.

In the above competitive bidding system, the successful bid determining means determines the difference between the respective limit values of the bid prices received by the first and second bid price receiving means, if the difference is more than a predetermined value. It is also possible to publish the bid price showing the limit value among the bid prices received by the second bid price receiving means in order to cause one or more second traders to bid on the transaction object.

If there is a large difference between the limit values of the bid prices received by the first and second bid price receiving means, it can be considered that the bid prices have not been optimized yet. In such a case, it is possible to further optimize the transaction price by disclosing the second bid price received by the second bid price receiving means and collecting the third bid.

The competitive bidding system may further include trader registration means for registering in advance a plurality of second traders capable of bidding on the transaction object. In this case, the first disclosure means may disclose the information regarding the transaction object to the second trader registered in the trader registration means.

In the above competitive bidding system, the second
The disclosure means may disclose the bid price indicating the limit value extracted by the bid price extraction means to the second trader who has received the bid price by the first bid price reception means. it can.

In this case, since the number of people who can make the second bid is limited, the second bid period may be shortened and the period required for determining the successful bidder can be shortened.

In the competitive bidding system, the first bid based on the first bid price published by the second publishing means.
Of the second bid price receiving means and the successful bid by receiving the information for canceling the transaction from the trader, and the information for stopping the transaction by the cancellation information receiving means. It may further include a stopping unit that stops the processing of the determining unit.

In this case, it is possible to prevent the transaction object from being traded outside the range considered to be a proper price for the first trader.

In the above competitive bidding system, the first
May be connected to each of the first terminal for use by the other trader and the second terminal for use by the one or more second traders via a network. In this case The transaction object receiving means receives, via the network, the information on the transaction object input by the first trader at the seller terminal, and the first and second transaction objects are received.
Disclosure means transmits the information to be disclosed to one or more second terminals via the network, and the first and second bid price reception means respectively disclose the first and second publication prices. The bid price entered by the second trader may be received via the network at the second terminal that has received the information disclosed by the means.

In the above competitive bidding system, the first
The trader may be the seller of the trade object, and the one or more second traders may be the buyer of the trade object. In this case, the bid price indicating the limit value is the bid price indicating the highest price.

Further, the first trader may be a buyer of the trade object, and the one or more second traders may be a seller of the trade object. In this case, the bid price indicating the limit value is the bid price indicating the minimum price.

In order to achieve the above-mentioned object, a competitive bidding method according to a second aspect of the present invention relates to a step of receiving information about a trade object presented by a first trader, and the received trade object. 1 based on the step of disclosing information so that one or more second traders can bid on the trade object, and 1 based on the information about the trade object that has been published.
The step in which the second trader bids on the object to be traded is received within the first period, and the bid price showing the limit value out of the bid prices received within the first period is set. A step of extracting, a step of releasing the bid price indicating the extracted limit value so as to make one or more second traders bid on the transaction object, and a price indicating the released limit value. Receiving at least one bid price of the object to be traded within the second period based on the bid prices received in the first and second periods, respectively. And making a decision regarding the successful bid of.

In order to achieve the above object, a program according to a third aspect of the present invention is a transaction object receiving means for receiving information on a transaction object presented by a first trader,
A first publishing means for publishing information about the transaction object received by the transaction object receiving means for bidding to one or more second traders for the transaction object; Based on the published information about the transaction object 1
The above-mentioned second trader receives the bid price for the object to be traded within a predetermined period of time from the first bid price receiving means and the bid price received by the first bid price receiving means. A bid price extracting means for extracting a bid price indicating a value, and a bid price indicating the limit value extracted by the bid price extracting means are disclosed so that one or more second traders can bid on the transaction object. A second disclosure means for performing the second disclosure means, and a second disclosure means for receiving a price at which one or more buyers bid for the transaction object within a predetermined period based on the bid price indicating the limit value disclosed by the second disclosure means. The computer apparatus is caused to function as a bid price receiving means and a successful bid determining means for making a decision regarding a successful bid of the transaction object based on the bid prices received by the first and second bid price receiving means, respectively. And butterflies.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a block diagram showing the configuration of the net transaction system according to this embodiment. As shown in the figure, this net transaction system mediates the transaction of the transaction object between the seller and the buyer, and is composed of a server device 1, a seller terminal 2, and a buyer terminal 3. . The seller terminal 2 and the buyer terminal 3 are connected to the server device 1 via the Internet 4.

The server device 1 performs the processing necessary for establishing a transaction of the transaction object between the seller and the buyer based on the information from the seller terminal 2 and the buyer terminal 3. The seller terminal 2 is used by a seller who has been registered as a member in advance, and performs processing required for registration of a transaction object and a transaction method. The buyer terminal 3 is used by a buyer who has been registered as a member in advance, and performs processing necessary for applying for a transaction of a transaction object. Details of these configurations will be described later.

In the description of this embodiment, the term “seller” or “buyer” simply refers to a person who is registered in the server device 1 as a user of this system, and is actually a transaction target. It has nothing to do with whether to buy or sell goods. Also, "Trade"
Alternatively, the term "transaction" refers to an act of establishing a person who buys and sells a trade object and a sale price, and is not related to the transfer of the trade object from the seller to the buyer.

FIG. 2 is a block diagram showing the configuration of the server device 1 of FIG. As shown in the figure, the server device 1 is
CPU (Central Processing Unit) 11 and memory 1
2, communication device 13, and seller registration database 14
And a buyer registration database 15 and a transaction information database 16.

The CPU 11 executes the program stored in the memory 12 and performs the processing necessary for establishing a transaction for the transaction object. The memory 12 includes an auxiliary storage and includes a CPU 11 shown in a flowchart described later.
The processing program of is stored. The memory 12 is also used as a work area of the CPU 11 when executing a program. The communication device 13 is connected to the Internet 4 to exchange information with the seller terminal 2 or the buyer terminal 3.

The seller registration database 14 is a database that stores information about the seller of the transaction object, that is, the user of the seller terminal 2. The information registered in the seller registration database 14 includes attribute information such as the seller's name, address, telephone number, and e-mail address, and the seller's unique ID and password issued at the time of registration (however, the password can be changed after registration). included.

The buyer registration database 15 is a database that stores information about the buyer of the transaction object, that is, the user of the buyer terminal 3. Information registered in the buyer registration database 15 includes attribute information such as the buyer's name, address, telephone number, and e-mail address, a buyer-specific ID and password issued at the time of registration (however, the password can be changed after registration), Further, it includes information on the conditions of the transaction object desired by the buyer and the payment method (credit card number, bank account number, etc.) of the buyer.

The transaction information database 16 is a database that stores information regarding transactions for each transaction object. The information registered in the transaction information database 16 is information regarding the transaction object itself (images may be included in addition to functions, etc.), information regarding buyers found by matching, which will be described later, buyers who have made a transaction reservation. Information on the transaction method, information on the transaction method selected by the seller, information on the transaction application from the buyer such as a bid price for the transaction target, which will be described later, and the like.

FIG. 3 is a block diagram showing the configuration of the seller terminal 2 shown in FIG. The seller terminal 2 is composed of a personal computer or the like, and as shown in the figure, a CPU
21, a memory 22, an input device 23, and a display device 24
And a communication device 25.

The CPU 21 executes the program stored in the memory 22 and performs the processing necessary for registering the transaction object and the transaction method. The memory 22 stores a processing program of the CPU 21 shown in a flowchart described later. The memory 22 also stores C when the program is executed.
It is used as a work area for the PU 21. The memory 2
In 2, at least a mailer program is stored as an application, and a transmission / reception function of electronic mail is constructed. The process of the flowchart described later also includes the process performed by executing this mailer program.

The input device 23 is composed of a keyboard, a mouse, etc., and inputs various information and the CPU 2
1 is to input an instruction. Display device 24
Is composed of a CRT, a liquid crystal display device, and the like, and displays information and other information sent from the server device 1. The communication device 25 connects to the Internet 4 and exchanges information with the server device 1.

FIG. 4 is a block diagram showing the configuration of the buyer terminal 3 shown in FIG. The buyer terminal 3 is composed of a personal computer or the like, and has a CPU as shown in the figure.
31, a memory 32, an input device 33, and a display device 34
And a communication device 35. The functions of each unit of the buyer terminal 3 are the same as those of the seller terminal 2 respectively. Further, the seller terminal 2 is similar to the seller terminal 2 in that it has an e-mail transmission / reception function.

The processing in the net transaction system according to this embodiment will be described below. Those who want to trade the transaction object through this system (who are to be sellers and buyers) need to register as members in advance. The method of member registration is almost the same in both cases, and the cases will be explained without distinction.

FIG. 5 is a flow chart showing the member registration process. In the member registration process, first, a person who should be a seller or a buyer accesses the server device 1 through the Internet 4 from a terminal device (seller terminal 2 or buyer terminal 3) such as a personal computer that he or she is using, and A request for a member registration form for each buyer is transmitted (step S101).

When the CPU 11 of the server device 1 receives the request from the seller terminal 2 or the buyer terminal 3 (step S151), the member registration form prepared for the seller or the buyer is prepared, and the seller terminal 2 of the request source. Alternatively, it is transmitted to the buyer terminal 3 via the Internet 4 (step S152). In the seller terminal 2 or the buyer terminal 3, when the communication devices 25 and 35 receive the member registration form (step S102), the display device 24 displays the member registration form.
It is displayed on 34 (step S103). Next, the person who should be the seller or the buyer operates the input devices 23 and 33 to input necessary information, and further inputs a transmission instruction (step S104). Here, the necessary information input by the person who should be the buyer includes the condition of the transaction object that he / she desires.

After that, the input information is transferred to the communication device 2
5, 35 are transmitted to the server device 1 via the Internet 4 (step S105). When the communication device 13 of the server device 1 receives the information from the seller terminal 2 or the buyer terminal 3 (step S153), this is registered in the seller registration database 14 or the buyer registration database 15 (step S154). Furthermore, the CPU 11
Issue a unique ID and password (step S15
5), register in association with the information (step S15)
6), the information is transmitted to the seller terminal 2 or the buyer terminal 3 that is the sender of the information via the Internet 4 (step S).
157). The issued password can be changed by accessing the server device 1 from the seller terminal 2 or the buyer terminal 3.

In the seller terminal 2 or the buyer terminal 3, when the communication devices 25 and 35 receive the ID and password (step S106), they are displayed on the display devices 24 and 34 (step S107). By obtaining this ID and password, the system can be used as a seller or a buyer. The seller or the buyer records the displayed ID and password and performs the processing described below necessary for trading the transaction object, and is used when logging in to the server device 1.

The seller and the buyer who have completed the member registration as described above can trade the transaction object through this system. In order to trade a tradeable object, it is necessary to first register the tradeable object and the trading method (trade registration). In order to perform this processing, it is necessary to perform login processing from the seller terminal 2 or the buyer terminal 3 to the server device 1 using the above-mentioned ID and password, but in the following description, this login processing will be omitted. To do.

6 and 7 are flow charts showing the transaction registration processing. When there is a transaction object that the seller wants to sell, the seller first inputs information regarding the transaction object from the input device 23 (step S201). Then, the seller operates the input device 23 to instruct the transmission so that the information about the transaction object is transmitted to the communication device 25.
Is transmitted to the server device 1 via the Internet 4 (step S202).

In the server device 1, when the communication device 13 receives the information on the transaction object sent from the seller terminal 2 (step S231), it is registered in the transaction information database 16 as the information on the new transaction object. Further, the time after a certain period from this timing is set as the deadline for the transaction reservation, and is stored in the transaction information database 16 in association with the information regarding the transaction object (step S232).

Next, the CPU 11 compares the information on the transaction object with the conditions of the transaction object stored in the buyer database 15 and extracts the buyer who meets the condition (step S233). Then, the information regarding the transaction object received from the seller terminal 2 in step S231 is converted to an electronic mail with the extracted buyer's electronic mail address as a destination, and the electronic mail is transmitted from the communication device 13 through the Internet 4 (step S234).

In the buyer terminal 3, when the communication device 35 receives the e-mail of the information about the transaction object (step S261), the e-mail is displayed on the display device 34 (step S262). From the information on the transaction object displayed on the display device 34, the buyer can decide whether to make a transaction reservation for the transaction object. The buyer who decides to make a transaction reservation inputs the reservation by operating the input device 33 (step S263), and further inputs a predetermined instruction to make the transaction reservation from the communication device 35 via the Internet 4. It is transmitted to the server device 1 (step S264).

In the server device 1, when the communication device 13 receives the transaction reservation from the buyer terminal 3 until the transaction reservation deadline registered in step S232, the transaction information is associated with the information relating to the buyer terminal 3 that transmitted the transaction reservation. It is stored in the database 16 (step S23)
5). When the deadline for the transaction reservation arrives, all the transaction reservations accumulated in the transaction information database 16 are summarized as a reservation status, and this is transmitted from the communication device 13 to the seller terminal 2 via the Internet 4 by e-mail (step S236). .

When the communication device 25 of the seller terminal 2 receives the e-mail indicating the reservation status (step S203), the e-mail is displayed on the display device 24 (step S204).
From the reservation status of the transaction object displayed on the display device 24,
The seller can choose how to trade the object. The seller uses the input device 23
By inputting the selected transaction method by operating (step S205), and by further inputting a predetermined instruction, information regarding the transaction method is transmitted from the communication device 25 to the server device 1 via the Internet 4 (step S205). S206).

As a transaction method that the seller can select, there are a method in which the seller places a price and recruits the buyer in a first-come-first-served manner, an auction by a rising method, a competitive bidding and the like. Competitive bidding may be completed only once, or may be performed twice as described below. These are the server devices 1
Based on the reservation status sent from the seller, the seller can predict the demand for the object to be traded, and the seller can select the one that seems appropriate.

In the server device 1, when the communication device 13 receives the information on the transaction method transmitted from the seller terminal 2 (step S237), this is registered in the transaction information database 16 in association with the transaction object (step S2).
38). This completes the transaction registration processing.

When the transaction registration is completed as described above,
Questions and answers (Q & A) regarding the transaction object are performed between the seller and the buyer for a certain period of time. The server device 1 is
This Q & A is performed as an intermediary, and all the questions sent by the buyer and the answers of the seller to each question are provided as a bulletin board. When this Q & A period has passed, the seller selects the item in the transaction registration process described above, and deals with the transaction object according to the transaction method registered in the transaction information database 16. Here, the transaction method other than the two-time bidding is substantially the same as the method that has been conventionally performed in the system using the Internet 4, so in the following, the processing for performing the transaction by the two-time bidding method is performed. Only (two-time bidding process) will be described.

FIGS. 8 and 9 are flowcharts showing the bidding process. When the transaction method selected by the seller is bidding twice, the server device 1 registers the start of the first bidding. In this start registration, the time after a certain period of time from the present time is determined as the deadline for the first bid, and with this deadline, information indicating that the first bid of the transaction object has started is registered in the transaction information database 16. Yes (step S331). Next, the CPU 11 generates an e-mail notifying the start of the first bid, and the e-mail address of the seller of the transaction object and the buyer who has made a transaction reservation for the transaction object (registered in the transaction information database 16). The e-mail address of the person who made the request) is transmitted from the communication device 13 via the Internet 4 (step S332).

When the communication device 25 of the seller terminal 2 receives the first bid notification e-mail from the server device 1 (step S301), it displays it on the display device 24 (step S302). This allows the seller to
It is possible to know when the bidding ends and when the highest bid in the first bidding is shown as described later.

Also in the buyer terminal 3, when the communication device 35 receives the first bid notification e-mail from the server device 1 (step S361), the communication device 35 displays it on the display device 34 (step S362). Thus, the buyer who has made the transaction reservation for the transaction object can decide whether or not to bid by the deadline of the first bid start. The buyer who has decided to bid by the first bid deadline determines the bid price for the transaction object and inputs it through the input device 33 (step S36).
3). By further inputting a predetermined instruction, the information on the first bid price is transmitted from the communication device 35 to the server device 1 via the Internet 4 (step S).
364).

In the server device 1, when the communication device 13 receives the information about the first bid price from the buyer terminal 3 until the first bid deadline registered in step S331, the communication device 13 stores the information in the transaction information database 16. (Step S333). When the first bid deadline is reached, the information on the first bid price accumulated in the transaction information database 16 is examined, and the highest bid price is selected from the information (step S334). Then, the information relating to the highest bid price is sent as an electronic mail, and the electronic mail address of the seller terminal 2 and the electronic mail address of the buyer terminal 3 which has made the transaction reservation is transmitted as a destination through the Internet 4 (step S335).

In the seller terminal 2, when the communication device 25 receives the highest bid e-mail from the server device 1 (step S303), it displays it on the display device 24 (step S304). This allows the seller to know how much the maximum bid amount in the first bid was for the transaction object.

At the buyer terminal 3 as well, when the communication device 35 receives the highest bid e-mail from the server device 1 (step S365), this is displayed on the display device 34 (step S366). This can be used as a reference for the buyer to determine how much to bid in the second bid described below.

After a lapse of a predetermined period from the transmission of the highest bid e-mail, the server device 1 registers the start of the second bid. In this start registration, the time after a certain period of time from the present time is determined as the deadline for the second bid, and with this deadline, information indicating that the second bid for the transaction object has started is registered in the transaction information database 16. Yes (step S336). Next, the CPU 11 generates an e-mail notifying the start of the second bid and sends the e-mail address of the seller of the transaction object and the e-mail address of the buyer who has made a transaction reservation to the transaction object. Is transmitted from the communication device 13 via the Internet 4 (step S337).

In the seller terminal 2, when the communication device 25 receives the first bid notification e-mail from the server device 1 (step S305), it displays it on the display device 24 (step S306). This allows the seller to
You can know when the bidding ends and the result of the bidding is shown.

In the buyer terminal 3 as well, when the communication device 35 receives the electronic mail for the second bid notice from the server device 1 (step S367), the communication device 35 displays it on the display device 34 (step S368). Accordingly, the buyer who has made the transaction reservation for the transaction object can decide whether to bid by the deadline of the start of the second bidding. The buyer who decides to bid by the second bid deadline determines the second bid price by referring to the bid reference amount displayed in step S366, and inputs the bid price from the input device 33 (step S369). By further inputting a predetermined instruction, the information about the second bid price is transmitted from the communication device 35 to the server device 1 via the Internet 4 (step S370).

In the server device 1, when the communication device 13 receives the information relating to the second bid price from the buyer terminal 3 until the second bid deadline registered in step S331, the communication device 13 stores the information in the transaction information database 16. (Step S338). When the second bid deadline is reached, the following successful bid determination processing is performed to determine the winning bidder and the winning bid (step S339).

FIG. 10 is a flow chart showing in detail the successful bid determination process of step S339. In the successful bid determination process, the CPU 11 determines by checking the transaction information database 16 whether any of the buyer terminals 3 has sent information regarding the second bid price (step S401). 2 from any buyer terminal 3
If the information about the second bid price has not been sent, the process proceeds to step S407 described later.

If information regarding the second bid price is sent from any of the buyer terminals 3, the CPU 11
Further examines the transaction information database 16 and determines whether or not there is any one of them with an amount exceeding the maximum bid amount for the first time (step S402). If there is no second bid indicating an amount exceeding the first maximum bid amount, the process proceeds to step S407 described later.

2 which indicates an amount exceeding the maximum bid amount for the first time 2
When there is the second bid, the CPU 11 determines the buyer who has presented the highest price of the second bid as the successful bidder of the transaction object (step S403). Then, the transaction information database 16 is further checked to determine whether or not there is a second bid with an amount exceeding the maximum bid price of the first bid, in addition to the second bid of the successful bidder (step S4).
04).

When there is no second bid exceeding the maximum bid price of the first time, the winning bid price is determined by the highest bid price of the second bid by the successful bidder (step S405). Then, the successful bid determination process is ended, and the process returns to the process of FIG.
On the other hand, if there is another second bid exceeding the maximum bid of the first bid, the bid amount of the highest bidder and the second bid amount of 11
The lower amount of the price of 0% is determined as the winning bid price (step S406). Then, the successful bid determination process is ended, and the process returns to the process of FIG.

If there is no second bid, or if there is no bid exceeding the maximum bid amount of the first bid in the second bid, in step S407, the maximum bid amount of the first bid is set. The bidder is determined as the winning bidder. And
The bid price of the winning bidder is determined as the winning bid price (step S408). Then, the successful bid determination process is ended, and the process returns to the process of FIG.

Returning to the processing of FIG. 9 and continuing the description, the CPU 11 of the server device 1 sends the successful bidder determined in the successful bid determination processing and the information on the winning bid price as an e-mail, and sends it to the first or second time. Send from the Internet 4 to the bidder's bidder's email address and the seller's email address as destinations (step S34).
0).

In the seller terminal 2, when the communication device 25 receives the e-mail of the successful bid result from the server device 1 (step S307), it displays it on the display device 24 (step S308). This allows the seller to know who the successful bidder of the transaction object is and what the winning bid is.

In the buyer terminal 3 as well, when the communication device 35 receives the e-mail indicating the successful bid result from the server device 1 (step S371), it displays it on the display device 34 (step S372). This allows the buyer who has made the first or second bid to know whether he / she has successfully bid for the transaction object or what the final bid price has become.

Based on the successful bid result e-mail, the seller and the successful bidder contact each other, and the transaction object is actually delivered and the fee is paid at the winning bid. This is not related to the present system, so detailed description will be omitted.

Incidentally, step S3 of the above-mentioned two-time bidding process.
In 33, when the information regarding the bid price is not input from any of the buyer terminals 3, the server device 1
Ends all the processing by transmitting an email to that effect to the seller terminal 2. In the buyer terminal 3, the first bid price input and transmission processing in steps S363 and S364, and step S369.
The process of inputting and transmitting the second bid price in S370 and S370 is not necessarily required.

As described above, in the net transaction system according to this embodiment, when the seller chooses to make a transaction by bidding twice, the buyer is
The final bid price can be determined by referring to the result of the first bid (highest bid price). Therefore, the buyer can be prevented from bidding at an extremely high price, and the transaction price for the transaction object can be optimized.
On the other hand, by conducting the second bid, it is possible for the seller side to prevent the transaction object from being sold at an extremely low price, and the transaction price can be optimized.

The final winning bid after the second bid can be determined on the basis of the second highest bid price in the second bid. For this reason, even if only one of the sellers bids at a considerably high price, the price based on the next highest bid price becomes the winning bid, so that the transaction price can be optimized.
On the other hand, the seller side can expect that the buyer side will make a higher bid by providing such a mechanism for determining the winning bid price.

Further, the only person who can make a transaction using this system is a seller or a buyer who has already registered as a member. Therefore, it is possible to avoid troubles such as not delivering the transaction object and not paying the fee as much as possible.

The present invention is not limited to the above embodiment,
Various modifications and applications are possible. Hereinafter, modifications of the above-described embodiment applicable to the present invention will be described.

In the above embodiment, the ID and password are transmitted to the seller or the buyer who is registered as a member via the Internet 4, but they may be transmitted by facsimile or mail. Further, means other than the ID and password may be applied as the authentication means of the seller or the buyer who is registered as a member.

In the above embodiment, the first and second bid notification e-mails are sent to all buyers who have made a transaction reservation. However, the second bid notification e-mails are the first and second bid notification e-mails. It may be sent only to the buyer who bid.
In this case, the second bidding period can be set short, and the period required for determining the successful bidder can be shortened. Further, in particular, the first bid notification e-mail may be sent to all buyers registered in the buyer registration database 15 regardless of whether or not a transaction reservation is made for the transaction object.

In the above-described embodiment, the notification to the seller and the buyer of the highest bid price and the notification to the seller and the buyer of the final successful bid result are sent to the seller terminal 2 and the buyer terminal 3 by e-mail. I was supposed to send it. However, this information is obtained by the seller or the buyer from the seller terminal 2 or the buyer terminal 3 to the server device 1.
You may confirm by referring to the predetermined page provided by. In this case, the seller and the buyer can know from the second bid notice that the maximum bid amount for the first bid has been determined. Further, the details of the successful bid result may not be shown, and only the successful bid result may be notified by e-mail.

In the above embodiment, the winning bid determined after the second bid is 110% of the second highest winning bid (provided that the winning bid exceeds the first bid).
Was the limit. On the other hand, the second highest bid price may be limited to a certain amount plus. Assuming that the maximum amount plus 10,000 is set as a limit amount, for example, when the maximum amount is 200,000 and the second amount is 160,000, the winning bid is determined to be 170,000 and the maximum amount is 100,000. When the number is 95,000, the winning bid can be determined to be 100,000.

In the above-mentioned embodiment, when the seller selects the bidding twice as the transaction method, as long as there is a bid from the buyer terminal 3, regardless of the maximum bid amount disclosed after the first bidding deadline. The second bid was to take place. On the other hand, the seller, in step S304
It may be possible to determine whether or not to make the second bid according to the maximum bid amount displayed in. If it is decided not to make the second bid, even if the winning bidder and the winning bid are decided in the state of the first bid, the transaction object is won to any buyer without performing the subsequent processing. It may not be allowed. This can prevent the transaction object from being traded at a price outside the range considered appropriate by the seller.

In the above-described embodiment, only two biddings, in which the maximum number of biddings is announced and then the competitive bidding is performed once, are explained. However, it is also possible to make a transaction in which bids are made three or more times. In this case, comparing the maximum bid amount of the first bid and the maximum bid amount of the second bid, for example, when the maximum bid amount of the second bid is 120% or more of the maximum bid amount of the first bid. Shall make a third bid, and if less than 120%, a successful bid may be decided in the second bid. Further, when the third bid is made, the buyer may be allowed to bid at a lower price than the second bid without being bound by the second bid. In this case, if the third highest bid amount exceeds the first highest bid amount, the third highest bid amount can be set as the winning bid price.

In the above embodiment, the delivery of the transaction object and the payment of the fee are performed between the seller and the successful bidder, and the system is not involved. On the other hand, the first bid or the second bid (the first bid
A predetermined deposit may be collected from the buyer who has made a bid (in the case of not bidding) based on the information about the payment means registered in the buyer registration database 15. Deposit money may be collected at the stage of transaction reservation. Then, the deposit money of the successful bidder may be used for a part of the payment of the transaction object, and the deposit money of the other person may be returned after the successful bidder is determined. As a result, the problem of non-payment of charges can be solved to some extent, and the security of transactions can be improved.

In the above-described embodiment, a plurality of buyers are planned for one seller, and in a competitive bidding, a person with a higher bid price wins the transaction object.
On the other hand, the present invention can also be applied to a system in which a plurality of sellers are planned for one buyer and the one with a low bid bid wins the transaction object. In this case, the buyer presents the transaction object and the seller bids. Then, when there is a lower second bid amount that exceeds the first lowest bid amount, the seller who offers the lowest bid amount can be the winning bidder. Further, the final winning bid amount can be 90% of the second lowest bid amount in the second bid, for example. Further, in such a case, the deposit money may be collected when the buyer registers the information regarding the transaction object.

In the above embodiment, the seller terminal 2 and the buyer terminal 3 are connected to the server device 1 via the Internet 4 which is an open environment network, but the server device 1 is connected via the closed environment network. It may be connected to.

In the above embodiment, the programs shown in the flow charts of FIGS.
The description has been made assuming that the data is stored in advance in Nos. 2 and 32. However, at least some of these programs
It may be stored in a computer-readable recording medium such as a D-ROM or a DVD-ROM, distributed, and installed in a general-purpose computer. Alternatively, it may be stored in a fixed disk device included in a Web server on the Internet 4 and downloaded and installed in a general-purpose computer via the Internet 4.

[0087]

As described above, according to the present invention,
The transaction price of the transaction object can be optimized.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a net transaction system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a server device of FIG.

FIG. 3 is a block diagram showing a configuration of a seller terminal shown in FIG.

FIG. 4 is a block diagram showing a configuration of a buyer terminal shown in FIG.

FIG. 5 is a flowchart showing a member registration process.

FIG. 6 is a flowchart showing a transaction registration process.

FIG. 7 is a flowchart showing a transaction registration process.

FIG. 8 is a flowchart showing a bidding process twice.

FIG. 9 is a flowchart showing a bidding process twice.

FIG. 10 is a flowchart showing in detail the successful bid determination process of FIG.

[Explanation of symbols]

1 server device 2 seller terminals 3 Buyer terminal 4 Internet 11 CPU 12 memories 13 Communication device 14 Seller Registration Database 15 Buyer Registration Database 16 transaction information database 21 CPU 22 memory 23 Input device 24 display 25 Communication device 31 CPU 32 memory 33 Input device 34 Display 35 communication device

Claims (12)

[Claims] 1. A transaction object receiving means for receiving information on a transaction object presented by a first trader, and information on a transaction object received by the transaction object receiving means for the transaction object. The first disclosure means for making the bid open to one or more second traders, and the one or more second traders respectively based on the information about the transaction object published by the first publication means. A first bid price receiving means for receiving a bid price for a transaction object within a predetermined period, and a bid for extracting a bid price showing a limit value from the bid prices received by the first bid price receiving means Price extracting means, and second publishing means for publishing the bid price indicating the limit value extracted by the bid price extracting means so as to make one or more second traders bid for the transaction object. The second disclosure means is public Second bid price receiving means for receiving, within a predetermined period, the prices at which one or more buyers have bid on the transaction object based on the bid price indicating the limit value, and the first and second bid prices. A competitive bidding system comprising: a successful bid determination means for making a decision regarding a successful bid of the transaction object based on the bid price received by each receiving means. 2. The successful bid determining means, when the bid price received by the second bid price receiving means exceeds the bid price indicating the limit value extracted by the bid price extracting means, 2. The second trader who bids at the bid price showing the limit value among the bid prices received by the second bid price receiving means is determined as the successful bidder.
Competitive bidding system described in. 3. The successful bid determination means, in addition to the determined successful bidder, is a bid price received by the second bid price reception means that exceeds the bid price indicating the limit value extracted by the bid price extraction means. The competitive bid according to claim 2, wherein if there is, the bid price is determined based on the bid price next to the limit price in the bid prices received by the second bid price receiving means. system. 4. The successful bid determining means determines that the object to be traded has a predetermined difference or more between the respective limit values of the bid prices received by the first and second bid price receiving means. On the other hand, among the bid prices received by the second bid price receiving means so that one or more second traders can bid on, a bid price showing a limit value is disclosed. The competitive bidding system described in any one of 1. 5. A trader registration means for registering in advance a plurality of second traders capable of bidding on the transaction object, wherein the first disclosure means is the trader registration means. The competitive bidding system according to any one of claims 1 to 4, wherein information on the transaction object is disclosed to a registered second trader. 6. A bid price indicating a limit value extracted by the bid price extraction means to a second trader whose bid price is received by the first bid price reception means. The competitive bidding system according to claim 1, wherein the competitive bidding system is open to the public. 7. A cancellation information receiving unit that receives information for canceling a transaction from the first trader based on the first bid price disclosed by the second disclosure unit, and the cancellation information reception. 7. The method according to claim 1, further comprising stop means for stopping the processing of the second bid price receiving means and the successful bid determining means when the means receives information for stopping the transaction. The competitive bidding system according to any one of items. 8. A first terminal provided for use by the first trader and a second terminal provided for use by the one or more second traders are respectively connected through a network, The transaction object receiving means receives, via the network, the information on the transaction object input by the first trader at the seller terminal, and the first and second disclosure means receive the information to be disclosed. ,
Transmitting to one or more second terminals via the network, wherein the first and second bid price receiving means are respectively the first and second bid price receiving means.
8. The bid price entered by the second trader is received at the second terminal, which has received the information made public by the second disclosure means, via the network. Competitive bidding system described in paragraph. 9. The first trader is a seller of the trade object, the one or more second traders are buyers of the trade object, and the bid price indicating the limit value is 9. The competitive bidding system according to claim 1, wherein the bid price is the highest bid price. 10. The first trader is a buyer of the trade object, the one or more second traders are sellers of the trade object, and the bid price indicating the limit value is The competitive bidding system according to any one of claims 1 to 8, wherein the bid price is a minimum bid price. 11. A step of receiving information about a trade object presented by a first trader, and the information about the received trade object to one or more second traders for the trade object. Opening for bidding, and receiving, within a first period, a price at which one or more second traders bid on the trade object based on the disclosed information about the trade object, Extracting a bid price showing a limit value from bid prices received within the first period; and adding a bid price showing the extracted limit value to the transaction object by one or more second The step of making the bidder open to the trader, the step of receiving a price at which one or more buyers bid the traded object based on the price showing the published limit value within a second period, and the step of: 1, the first Based on the bids received respectively in the period, competitive bidding process which comprises the steps of making a decision regarding a successful bid of the transaction object. 12. A transaction object receiving means for receiving information on a transaction object presented by a first trader, and information on a transaction object received by the transaction object receiving means for the transaction object. A first disclosure means for making the bid open to one or more second traders, and one or more second traders each of the trade targets based on the information about the trade object published by the first publication means. First bid price receiving means for receiving a bid price of an item within a predetermined period, and bid price extracting means for extracting a bid price showing a limit value from the bid prices received by the first bid price receiving means Second publication means for publishing the bid price indicating the limit value extracted by the bid price extraction means so as to make one or more second traders bid on the transaction object, the second publication Means exposed poles Second bid price receiving means for receiving, within a predetermined period, a price at which one or more buyers bid on the transaction object based on a bid price indicating a value, and the first and second bid price receptions A program for causing a computer device to function as a successful bid determination means for making a determination regarding a successful bid of the transaction object based on the bid price received by each means.