Double auction system

Abstract

To provide a double auction system that realizes more efficient transactions.SOLUTION: A double auction system comprises: a buyer terminal used by a buyer of at least one type of goods; a seller terminal used by a seller of at least one type of goods; and a double auction device. The double auction device includes: a transaction condition setting unit that executes classification identification that gathers buyer information received from the buyer terminal, seller information received from the seller terminal and one type of goods in an order book, and identifies one classification that one type of goods belongs to, and sets a transaction condition correspondingly to the classification, at least one of the buyer terminal and the seller information including information related to the transaction condition; a trade feasibility determination unit that determines trade feasibility on the basis of the buyer terminal and the seller information; and a trade processing unit that, when the trade feasibility determination unit determines that a trade is possible, determines a trade price for one type of goods and executes trading processing of one type of goods.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a double auction system. [Background technology]

[0002] In recent years, the current situation is that transactions of goods and intangible assets between users on the Internet are becoming more and more common. Representative services include "Mercari (registered trademark)", "Yahoo! Auctions (Yahoo! Auctions (registered trademark))", "bitFlyer (registered trademark)", "StockX (registered trademark)", and "Sunidan (registered trademark)".

[0003] In particular, the double auction, a trading format adopted by "bitFlyer (registered trademark)", "StockX (registered trademark)", "Sunidan (registered trademark)", etc., is a particularly promising trading format because it allows users to easily realize optimal transactions and also allows them to solicit requests for desired items (limit buy orders).

[0004] For example, a technique has been proposed for trading cards as a set through an Internet auction (see Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2012-079077 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, the technology proposed in Patent Document 1 may not be able to further improve the efficiency of transactions (buying and selling).

[0007] The present invention has been made in view of the above circumstances, and has as its main object to provide a double auction system that can realize even more efficient transactions (buying and selling). [Means for solving the problem]

[0008] As a result of intensive research into achieving the above-mentioned object, the inventors have succeeded in developing a double auction system that can realize even more efficient transactions (buying and selling), thereby completing the present invention.

[0009] That is, in the present invention, a buyer terminal used by a buyer of at least one kind of good; a seller terminal used by a seller of at least one type of good; A double auction device, the buyer terminal and the seller terminal are connected to the double auction device in a communicable state; The double auction device comprises: a buyer information processing unit that processes the buyer information received from the buyer terminal; a seller information processing unit that processes seller information received from the seller terminal; a buying and selling condition setting unit that collects at least one type of goods into at least one order book, performs classification identification to identify at least one classification to which the at least one type of goods belongs, and sets at least one buying and selling condition corresponding to the at least one classification; a transaction possibility determination unit that determines transaction possibility based on the buyer information and the seller information; a transaction processing unit that, when the transaction possibility determination unit determines that the transaction is possible, determines a transaction price for the at least one kind of good and processes the transaction of the at least one kind of good; At least one of the buyer information processed by the buyer information processing unit and the seller information processed by the seller information processing unit includes information on the at least one condition of sale and purchase set by the condition of sale setting unit.

[0010] In the double auction system according to the present invention, The buyer information may be information regarding a purchase order according to the at least one condition of sale specified by the buyer.

[0011] In the double auction system according to the present invention, The trading condition setting unit may set a plurality of the trading conditions, The buyer information may be information that specifies the plurality of buying and selling conditions as a set of logical sums and / or logical products.

[0012] In the double auction system according to the present invention, The seller information may be information regarding a sell order according to the at least one condition of sale specified by the seller.

[0013] In the double auction system according to the present invention, The trading condition setting unit may set a plurality of the trading conditions, The seller information may be information that specifies the plurality of buying and selling conditions as a set of logical sums and / or logical products.

[0014] In the double auction system according to the present invention, The seller information may be information about one of the categories to which one of the goods belongs.

[0015] In the double auction system according to the present invention, The seller information may be information relating to one of the categories to which multiple types of the goods belong.

[0016] In the double auction system according to the present invention, The transaction possibility determination unit may determine transaction possibility based on buyer information regarding a limit buy order and seller information regarding a market sell order according to the at least one buying and selling condition specified by the buyer.

[0017] In the double auction system according to the present invention, The transaction possibility determination unit may determine transaction possibility based on seller information regarding a limit sell order and buyer information regarding a market buy order in accordance with the at least one trading condition specified by the seller. Effect of the Invention

[0018] According to the present invention, more efficient transactions (buying and selling actions) can be realized. Note that the effects described herein are not necessarily limited to those described herein, and may be any of the effects described in this specification. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is a block diagram for explaining the configuration of a double auction system according to the present invention. [Diagram 2] FIG. 2 is a diagram showing an example of an interface for a user (buyer) placing a purchase order in trading cards. [Diagram 3] FIG. 3 is a flow chart showing the flow of a market buy order for a trading card. [Figure 4] FIG. 4 is a flow chart showing the flow of a limit buy order for a trading card. [Diagram 5] FIG. 5 is a flow chart showing the flow of a market sell order for a trading card. [Figure 6] FIG. 6 is a flow chart showing the flow of a limit sell order for a trading card. [Figure 7] FIG. 7 is an explanatory diagram showing an example of a limit buy order and a limit sell order for a trading card. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] A preferred embodiment for carrying out the present invention will be described below. The embodiment described below shows an example of a typical embodiment of the present invention, and the scope of the present invention will not be narrowly interpreted by this. Unless otherwise specified, in the drawings, "upper" means the upper direction or upper side in the drawing, "lower" means the lower direction or lower side in the drawing, "left" means the left direction or left side in the drawing, and "right" means the right direction or right side in the drawing. In addition, in the drawings, the same or equivalent elements or members are given the same reference numerals, and duplicate explanations are omitted.

[0021] The explanation will be given in the following order. 1. Overview of the Invention 2. First embodiment (example of basic configuration of double auction system) 3. Second embodiment (example of double auction system for trading cards) 4. Third embodiment (example of a double auction system for used cars)

[0022] <1. Overview of the Invention> The present invention will be outlined below.

[0023] Generally speaking, a double auction is a form of transaction that is particularly suited to goods such as currency or stocks, where each individual item can be considered to be the same (usually, there is no distinction between a 1,000 yen note withdrawn from a bank and one received as change). A double auction is not limited to goods that have an abstract value such as currency, but can also be used for goods where use value is important, such as crude oil or red beans, but it requires that the individual differences between individual items can be sufficiently ignored. However, a double auction can be difficult to use in transactions of goods that require an eye for individual differences, such as tuna or used cars.

[0024] Currently, in trading services using double auctions, small differences in goods are classified so that transactions of commodities with small differences can be considered equivalent, and each is treated as an independent brand. For example, orders for iPhones (registered trademarks) with different colors or storage capacities are placed in separate order books as independent brands. A trading system in which similar goods are treated as different goods can meet the demand of users who are very particular about goods. On the other hand, many users who are not very particular, for example, users who do not care about the color or storage capacity but want an iPhone (registered trademark) as cheaply as possible, must choose a specific brand and place a limit buy order, which may result in an opportunity loss if a transaction is not concluded with a seller who owns an iPhone (registered trademark) that meets the user's demand, even though it is different from the specific brand selected.

[0025] Therefore, an efficient trading system using double auctions for goods that are similar but not equivalent, such as different versions or individual differences, should be considered.

[0026] The essence of the problem is that the classification of "goods that can be regarded as equivalent" differs depending on the subjective opinion of each individual participant in the transaction. Taking the iPhone (registered trademark) as an example again, one individual may want a yellow iPhone (registered trademark) 14 in good condition, while another individual may want the cheapest iPhone (registered trademark) 14, regardless of color or scratches. Even if both individuals "want an iPhone (registered trademark) 14," the range of what each individual is looking for is different.

[0027] In the current web service structure, one way to meet the needs of an individual who wants the cheapest iPhone is to place limit buy orders simultaneously on the order books of all iPhones that the individual considers to be equivalent. However, this method requires the effort of placing orders for many products simply for a single good. In addition, as soon as one of the products that the individual desires is executed, all other orders must be cancelled, which creates the risk of conflicts occurring, such as multiple orders being executed almost simultaneously.

[0028] The present invention has been made in view of these circumstances. The present invention provides a double auction system using a matching method with buying and selling conditions, in which similar goods that may be considered equivalent by individual market participants are grouped together in at least one order book (or may be grouped together in a single order book), and each individual selects the buying and selling conditions he or she desires when placing a buy order.

[0029] That is, in the present invention, a buyer terminal used by a buyer of at least one kind of good; a seller terminal used by a seller of at least one type of good; A double auction device, the buyer terminal and the seller terminal are connected to the double auction device in a communicable state; The double auction device comprises: a buyer information processing unit that processes the buyer information received from the buyer terminal; a seller information processing unit that processes seller information received from the seller terminal; a buying and selling condition setting unit that collects at least one type of goods into at least one order book, performs classification identification to identify at least one classification to which the at least one type of goods belongs, and sets at least one buying and selling condition corresponding to the at least one classification; a transaction possibility determination unit that determines transaction possibility based on the buyer information and the seller information; a transaction processing unit that, when the transaction possibility determination unit determines that the transaction is possible, determines a transaction price for the at least one kind of good and processes the transaction of the at least one kind of good; A double auction system may be provided in which at least one of the buyer information processed by the buyer information processing unit and the seller information processed by the seller information processing unit includes information regarding the at least one condition of sale and purchase set by the condition of sale setting unit.

[0030] In the double auction system according to the present invention, multiple types of goods that can be considered equivalent from a certain perspective, such as iPhones 14 with different colors or storage capacities, may be classified under the category of iPhone 14, and a single order book may be constructed by grouping them together under the category of iPhone 14.

[0031] Furthermore, a market participant (buyer) who wishes to purchase an iPhone (registered trademark) may specify a plurality of categories in advance by a buying and selling condition setting unit of a double auction device provided in the double auction system according to the present invention, and set buying and selling conditions corresponding to each of the plurality of categories, and may specify the buying and selling conditions that the market participant (buyer) desires as a set of logical sums or products among the color, storage capacity, and storage state as the buying and selling conditions. In other words, the buyer information from the buyer (the buyer terminal used by the buyer) may be information specifying a plurality of buying and selling conditions as a set of logical sums and / or products.

[0032] For example, the color of the iPhone (registered trademark) may be at the discretion of the buyer, and the storage capacity of the iPhone (registered trademark) may be 256 GB or 512 GB, and the storage condition of the iPhone (registered trademark) may be in mint condition, etc. Here, for items that can be ranked based on generally preferred properties such as storage capacity and storage condition, classification (classification specification) based on thresholds such as "256 GB or more" or "mint condition with minor scratches or better" may be included.

[0033] And, for a market participant (seller) who wants to sell an iPhone (registered trademark), in principle, a sell order may be made with a unique classification of the physical item to be sold. In other words, the seller information from the seller (the seller terminal used by the seller) may be information on one classification to which the physical item (for example, one type of good) belongs.

[0034] In addition, for sell orders from sellers who hold multiple types of goods or sellers who engage in credit transactions, a mechanism may be included for placing sell orders for multiple types of goods that meet the terms of sale together. In other words, seller information from a seller (a seller terminal used by a seller) may be information on one classification to which multiple types of goods belong.

[0035] An order may be contracted and a transaction may be established when a seller places a market sell order that matches the buying and selling conditions of a limit order specified by a buyer, or when a buyer places a market buy order with buying and selling conditions that match the limit sell order of an item held by the seller. Note that in the double auction system according to the present invention, a transaction feasibility determination unit included in the double auction device may determine whether an order is contracted and a transaction is established (i.e., whether a transaction is possible).

[0036] In the double auction system according to the present invention, when the true needs of buyers are reflected in the double auction system according to the present invention, there is no need to place independent orders in multiple order books. The simple interface provided by the double auction system according to the present invention allows the true needs of individual buyers to be directly reflected in orders, making it highly convenient. Furthermore, in the double auction system according to the present invention, there is no need to worry about order conflicts between independent order books. Furthermore, in the double auction system according to the present invention, in which the true needs of buyers are accurately reflected, there is no opportunity loss due to overlooking a match between conditions and goods held by sellers.

[0037] 2. First embodiment (example of basic configuration of double auction system) The basic configuration of a double auction system according to a first embodiment (an example of the basic configuration of a double auction system) of the present invention will be described with reference to FIG.

[0038] Fig. 1 is a block diagram for explaining the configuration of a double auction system according to the present invention. More specifically, Fig. 1 is a block diagram for explaining the configuration of a double auction system 100 according to a first embodiment of the present invention.

[0039] As shown in Fig. 1, the double auction system 100 includes buyer terminals 60 (60-1, 60-2, 60-3) used by buyers who wish to purchase at least one type of goods that are the subject of a double auction transaction, seller terminals 70 (70-1, 70-2, 70-3) used by sellers who wish to sell at least one type of goods that are the subject of a double auction transaction, and a double auction device 1. The buyer terminals 60 (60-1, 60-2, 60-3) and the seller terminals 70 (70-1, 70-2, 70-3) are connected in a communicable state to the double auction device 1 via a communication network 80 such as the Internet. Note that, although three buyer terminals 60, 60-1, 60-2, and 60-3, are illustrated in Fig. 1, this is for convenience and is not limited to this, and the number of buyer terminals 60 in the double auction system 100 may be one or four or more. Similarly, although three seller terminals 70, 70-1, 70-2, and 70-3, are illustrated, this is for convenience and is not limited to this, and in the double auction system 100, there may be one seller terminal 70, or four or more seller terminals 70.

[0040] Each of the buyer terminals 60 (60-1, 60-2, 60-3) and the seller terminals 70 (70-1, 70-2, 70-3) is an information processing terminal, and may include, for example, a calculation unit such as a CPU (Central Processing Unit), an input means such as a keyboard, and an information recognition means such as a display. Each of the buyer terminals 60 and the seller terminals 70 may use an interface such as a touch panel that combines an input means and an information display means. The information recognition means may also be an information recognition device that transmits information by voice. Examples of each of the buyer terminals 60 and the seller terminals 70 include well-known computers, tablet terminals, smartphones, etc. A buyer can input or select buyer information based on the display of the buyer terminal 60, and can transmit the input or selected buyer information to the double auction device 1 (a buyer information processing unit 10 described later). The double auction device 1 (a buyer information processing unit 10 described later) performs various processes as described later based on the received buyer information. A seller can input or select seller information based on the display of the seller terminal 70, and can transmit the input or selected seller information to the double auction device 1 (the seller information processing unit 20 described later). The double auction device 1 (the seller information processing unit 20 described later) performs various processes based on the received seller information, as described later.

[0041] The double auction device 1 is an information processing device capable of processing information and transmitting and receiving information from a server device, a personal computer, or the like, using well-known computer technology. The double auction device 1 may include a control unit and a storage unit, although they are not shown in FIG. 1. The control unit has one or more arithmetic processing devices such as a central processing unit (CPU), a micro-processing unit (MPU), a graphics processing unit (GPU), etc., and performs various information processing, control processing, etc. related to the double auction device 1 by reading and executing a program stored in the storage unit. The storage unit stores the program executed by the control unit and the processing results of the control unit, and stores buyer information received from the buyer terminal 60, seller information received from the seller terminal 70, etc. The storage unit 113 can be configured with a semiconductor memory, a hard disk, etc.

[0042] As the network 80, various networks such as the Internet, an intranet, a LAN (local area network), and a VPN (virtual private network) can be used.

[0043] As shown in FIG. 1, the double auction apparatus 1 includes a buyer information processing unit 10, a seller information processing unit 20, a buying and selling conditions setting unit 30, a transaction possibility determining unit 40, and a transaction processing unit 50.

[0044] The buyer information processing unit 10 processes the buyer information received from the buyer terminal 60 (60-1, 60-2, 60-3), and the seller information processing unit 20 processes the seller information received from the seller terminal 70 (70-1, 70-2, 70-3).

[0045] The buying and selling condition setting unit 30 collects at least one type of goods into at least one order book, performs classification identification to identify at least one classification to which the at least one type of goods belongs, and sets at least one buying and selling condition corresponding to the at least one classification.

[0046] At least one of the buyer information processed by the buyer information processing unit 10 and the seller information processed by the seller information processing unit 20 includes information on at least one condition of sale set by the condition setting unit. Then, the transaction possibility determination unit 40 determines the possibility of a transaction based on the buyer information and the seller information, and if the transaction possibility determination unit 40 determines that a transaction is possible, the transaction processing unit 50 determines the transaction price of at least one type of good and processes the transaction of at least one type of good. Note that if the transaction possibility determination unit 40 does not determine that a transaction is possible, the transaction processing unit 50 does not determine the transaction price of at least one type of good and does not process the transaction of at least one type of good.

[0047] In this case, the transaction feasibility determination unit 40 determines the feasibility of a transaction based on the buyer information including the new terms of sale and the previous seller information (seller information that was not determined to be transactionable), the previous buyer information (buyer information that was not determined to be transactionable) and seller information including the new terms of sale, and the buyer information including the new terms of sale and seller information including the new terms of sale, and if the transaction feasibility determination unit 40 determines that a transaction is possible, the transaction processing unit 50 may determine the transaction price of at least one type of good and process the transaction of at least one type of good.

[0048] The above description of the basic configuration of the double auction system according to the first embodiment of the present invention (an example of the basic configuration of a double auction system) can be applied to a double auction system for trading cards according to a second embodiment of the present invention, which will be described later, and a double auction system for used cars according to a third embodiment of the present invention (an example of a double auction system for used cars), unless there is any particular technical contradiction.

[0049] <3. Second embodiment (Example of double auction system for trading cards)> A double auction system for trading cards according to a second embodiment of the present invention (an example of a double auction system for trading cards) will be described.

[0050] Trading card games (TCGs), such as Magic: The Gathering (MtG), have the characteristic that the effect of a card in the game is uniquely determined by the name of the card. In other words, in terms of the value of use in the game, it can be said that only the matching of the card name is a sufficient condition to guarantee it. On the other hand, in trading card games (TCGs) such as Magic: The Gathering (MtG), the fun of collecting cards and the demand for collectors are also factors that cannot be ignored in addition to playing the game. From the perspective of collector demand, classification by the value of use in the game is not enough, and even cards that have the same effect in the game can have significant added value depending on individual detailed classifications, such as "limited number in circulation," "good condition," or "beautiful illustrations."

[0051] In the double auction system for trading cards according to the second embodiment of the present invention, it is possible to implement detailed classifications such as included set (included set buttons 2002 to 2009 in FIG. 2 described later), language (en (English) button 3002 and ja (Japanese) button 3003 in FIG. 2 described later), whether the card has a glossy finish (Foil button 1002 and Non-foil button 1003 in FIG. 2 described later), and storage state (NM button 4001, SP or higher button 4002, MP or higher button 4003, and HP or higher button 4004 in FIG. 2 described later).

[0052] Here, a buying order in the double auction system for trading cards according to the second embodiment of the present invention may have the following mechanism. - For buyer information, where generally preferred characteristics can be ranked, such as grading of state of preservation, classification by threshold such as "Rank B or higher" may be included. The system may have a function for determining whether there is a limit sell order that meets the specified buying and selling conditions and price, and for determining whether to execute the order or to place a new limit buy order. In other words, the transaction feasibility determination unit determines the transaction feasibility based on seller information regarding a limit sell order in accordance with the buying and selling conditions specified by the seller and first buyer information regarding a limit buy order, and if the transaction feasibility determination unit determines that a transaction is not possible, it may determine the transaction feasibility based on seller information regarding a limit sell order in accordance with the buying and selling conditions specified by the seller and second buyer information regarding a limit buy order. The function for executing buy orders may include a function for executing a combination of sell orders with multiple trading conditions, such as a combination of two units of trading condition A and one unit of trading condition B for a total of three units, in an amount up to a desired number. That is, the purchase and sale condition setting unit sets a plurality of purchase and sale conditions, The number of at least one type of trading card may be specified according to each of the multiple buying and selling conditions, and the total number of trading cards may be calculated by adding up the numbers of at least one type of trading cards according to each of the multiple buying and selling conditions. A transaction feasibility determination unit (which, in FIG. 1 , is the transaction feasibility determination unit 40 of the double auction device 1) may then determine whether a transaction is possible based on seller information on a set of sell orders consisting of that total number of trading cards and buyer information on a buy order corresponding to the set of sell orders for a desired number of trading cards that is less than or equal to the total number. The implementation may be such that a pair of logical sums and products expressing the conditions of a buy order is expressed as a set consisting of corresponding elements (an example of one buy / sell condition), and it is determined whether an element corresponding to the counterparty's sell order exists. That is, the purchase and sale condition setting unit sets a plurality of purchase and sale conditions, The multiple buying and selling conditions may be specified as a set of logical sums and / or logical products, and the transaction feasibility determination unit may determine that a transaction is possible based on buyer information regarding a buy order based on at least one element (one buying and selling condition may not be one element) that constitutes the set of logical sums and / or logical products, and seller information regarding a sell order based on the at least one element.

[0053] Furthermore, the double auction system for trading cards according to the second embodiment of the present invention may have the following mechanism for a sell order. The system may be provided with a function for determining whether there is a limit buy order that meets the specified buying and selling conditions and price, and for determining whether to execute the order or to place a new limit sell order. In other words, the transaction feasibility determination unit determines the transaction feasibility based on buyer information regarding a limit buy order in accordance with the buying and selling conditions specified by the buyer and first seller information regarding a limit sell order, and if the transaction feasibility determination unit determines that a transaction is not possible, it may determine the transaction feasibility based on the buyer information regarding the limit buy order in accordance with the buying and selling conditions specified by the buyer and second seller information regarding the limit sell order. · Short selling, option trading, and other margin trading and financial derivatives may be included. The stocks offered for sale in these sell orders may be those with a uniquely specified detailed classification, or those with a mixture of detailed classifications (subclassifications) and only the card name (which may be called a major classification) specified. That is, the seller information may include information regarding a transaction type via credit trading or a financial derivative.

[0054] Next, a double auction system for trading cards according to a second embodiment of the present invention will be described with reference to FIGS.

[0055] Fig. 2 is a diagram showing an example of an interface of a user (buyer) placing a purchase order in a trading card transaction. More specifically, Fig. 2 is a diagram showing an example of an interface of a buyer terminal 60 in a transaction of trading cards A to J used in a trading card game (TCG) called Magic: The Gathering (MtG).

[0056] 2 shows a "Foil" column. The "Foil" column shows a select all button 1001 (which is a logical sum of buying and selling conditions 1002 and buying and selling conditions 1003, which will be described later), a Foil (with glossy finish) button 1002 (referred to as buying and selling conditions 1002), and a Non-Foil (without glossy finish) button 1003 (referred to as buying and selling conditions 1003). When a buyer selects (clicks) the select all button 1001, it means that the trading card he or she wishes to purchase may be either glossy or non-glossy.

[0057] Below the "Foil" column, a "Set" column is displayed. The "Set" column includes a keyword search column 2000 that allows a "narrow down by set name" search, a select all button 2001 (which is a logical sum of buying and selling conditions 2002, 2003, 2004, 2005, 2006, 2007, 2008, and 2009, which will be described later), a recording set 1 button 2002 (referred to as "buying and selling conditions 2002"), a recording set 2 button 2003 (referred to as "buying and selling conditions"), and a selection button 2004. In addition, when the buyer selects (clicks) the select all button 2001, the trading card he / she wishes to purchase may be any of collected sets 2002 to 2009. In addition, when the buyer selects (clicks) the select all button 2001, the trading card he / she wishes to purchase may be any of collected sets 2002 to 2009.

[0058] Below the "Set" column is a "Language" column. In the "Language" column, there are displayed a select all button 3001 (which is a logical sum of buying and selling conditions 3002 and buying and selling conditions 3003, which will be described later), an en (English) button 3002 (referred to as buying and selling conditions 3002), and a ja (Japanese) button 3003 (referred to as buying and selling conditions 3003). When a buyer selects (clicks) the select all button 3001, the trading card he or she wishes to purchase can be in either en (English) or ja (Japanese).

[0059] Below the "Language" column, there is a "Illustration" column. The "Illustration" column shows trading cards A, B, C, D, E, F, G, I, and J that are to be traded and are used in a trading card game (TCG). The trading cards A to J have the same card names (which may be referred to as major categories).

[0060] Below the "Illustration" column is a "Status" column. In the "Status" column, an NM (Near Mint) button 4001 (referred to as "Buying and Selling Conditions 4001"), an SP (Slightly Played) or higher button 4002 (referred to as "Buying and Selling Conditions 4002"), an MP (Moderately Played) or higher button 4003 (referred to as "Buying and Selling Conditions 4003"), and an HP (Heavily Played) or higher button 4004 (referred to as "Buying and Selling Conditions 4004") are shown.

[0061] Generally speaking, NM (Near Mint) means that a trading card is almost in perfect condition, SP (Slightly Played) means that a trading card has minor scratches, MP (Moderately Played) means that a trading card has some damage, and HP (Heavily Played) means that a trading card has major damage.

[0062] A buyer can refer to the "Foil" column, "Set" column, "Language" column, and "Status" column, select (click) the desired button, and specify one of cards A to J in the "Illustration" column to place a buy order (either a limit buy order or a market buy order). The buyer information related to the buy order (either a limit buy order or a market buy order) is processed by a buyer information processing unit 10 of the double auction device 1, as shown in FIG. 1.

[0063] Fig. 3 is a flowchart showing the flow of a market buy order for a trading card. More specifically, Fig. 3 is a flowchart showing the flow of a market buy order for a trading card used in a trading card game (TCG) called Magic: The Gathering (MtG).

[0064] As shown in FIG. 3, in step S30, buying a trading card at market price starts.

[0065] In step S31, a trading card is searched for using the trading card search box or a link on the top page (such as the expansion list).

[0066] In step S32, the user searches for the corresponding trading card illustration from the brand list (which may be considered as a list of various goods), checks the price on the candlestick chart, and presses the purchase button.

[0067] In step S33, the buyer selects the trading card he or she wants. If the buyer only wants a trading card for playing, narrow down the cheap trading cards by selecting all. View the prices of each narrowed down brand. Since there is a sale at the desired price, select market buy.

[0068] In step S34, in the case of market purchase, illustrations of the trading cards to be purchased are displayed one by one (not by brand type, but by card of the same brand). The condition and price of each card are also displayed.

[0069] In step S35, the purchased trading cards can be confirmed, and in most cases the next action will be to purchase additional trading cards or to move the trading cards to a drawer.

[0070] In step S36, the purchasing of trading cards is completed (END).

[0071] Fig. 4 is a flowchart showing the flow of a limit buy order for a trading card. More specifically, Fig. 4 is a flowchart showing the flow of a limit buy order for a trading card used in a trading card game (TCG) called Magic: The Gathering (MtG).

[0072] As shown in FIG. 4, in step S40, buying a trading card at a limit price starts.

[0073] In step S41, a trading card is searched for using the trading card search box or a link on the top page (such as the expansion list).

[0074] In step S42, select the trading card you want. If you only want trading cards to play with, select all and narrow down the cheap trading cards. View the prices of each narrowed down brand. There are no offers at the price you want, so select limit buy.

[0075] In step S43, in the case of limit purchase, a list of candidate brands of illustrations for trading cards that can be executed is displayed. The specified condition, number of pieces, price, and expiration date are also displayed. Press the order confirmation button.

[0076] In step S44, the trading card for which the limit buy is being placed can be confirmed.

[0077] In step S45, a market sell is placed on the limit order board, and it is confirmed that the transaction has been concluded.

[0078] In step S46, the purchasing of trading cards is completed (END).

[0079] Fig. 5 is a flowchart showing the flow of a market sell order for a trading card. More specifically, Fig. 5 is a flowchart showing the flow of a market sell order for a trading card used in a trading card game (TCG) called Magic: The Gathering (MtG).

[0080] As shown in FIG. 5, in step S50, selling of trading cards at market price starts.

[0081] In step S51, the seller searches for cards that are likely to sell among the trading cards he owns. If the seller wishes to see detailed information such as price trends, he accesses the individual page of each trading card and checks charts, etc.

[0082] In step S52, the trading card page is accessed and the charts and the like are checked.

[0083] In step S53, the brand to be sold is selected. Then, since the price is good, the brand is sold at market price. The number of units is specified and the sell at market button is pressed.

[0084] In step S54, since there is no problem, the market sell execution button is immediately pressed.

[0085] In step S55, the next action is to cash the proceeds or sell other trading cards.

[0086] In step S56, the sale of trading cards ends (END).

[0087] Fig. 6 is a flow chart showing the flow of a limit price sell order for a trading card. More specifically, Fig. 6 is a flow chart showing the flow of a limit price sell order for a trading card used in a trading card game (TCG) called Magic: The Gathering (MtG).

[0088] As shown in FIG. 6, in step S60, selling of a trading card at a limit price starts.

[0089] In step S61, the seller searches for cards that are likely to sell among the trading cards he owns. If the seller wishes to see detailed information such as price trends, he accesses the individual page of each card and checks charts, etc.

[0090] In step S62, the trading card page is accessed and the charts and the like are checked.

[0091] In step S63, the price of the brand is checked. Since it is not urgent, it is decided to sell at the limit price. Some people close the modal once and refer to the indicative price to guess the price at which it is likely to sell. Set the price at which you want to sell and press the limit price sell button.

[0092] In step S64, the specified state, quantity, price, and expiration date are confirmed. Since there are no problems, a limit order sell is executed.

[0093] In step S65, the trading cards being sold at limit prices can be confirmed. The price can be adjusted while watching the market price.

[0094] In step S66, a market buy is placed on the limit order board, and it is confirmed that the transaction has been concluded.

[0095] In step S67, it can be confirmed that the sales amount has been received.

[0096] In step S68, the sale of trading cards ends (END).

[0097] Fig. 7 is an explanatory diagram showing an example of a limit buy order and a limit sell order for a trading card. More specifically, Fig. 7 is an explanatory diagram showing an example of a limit buy order and a limit sell order for a trading card used in a trading card game (TCG) called Magic: The Gathering (MtG).

[0098] Reference numerals 5001 to 5004 show examples of limit sell orders by sellers.

[0099] Reference numeral 5001 shows a limit sell order for four trading cards with a limit price of 2,700 yen in accordance with buying and selling conditions (referred to as buying and selling conditions 5001) corresponding to a specified classification (which may be thought of as a specified label, referred to as classification 5001 (label 5001)).

[0100] Reference numeral 5002 shows a limit sell order for two trading cards with a limit price of 2,800 yen, in accordance with buying and selling conditions (referred to as buying and selling conditions 5002) corresponding to a specified classification (which may be considered a specified label, and is referred to as classification 5002 (label 5002)).

[0101] Reference numeral 5003 shows a limit sell order for two trading cards with a limit price of 2,800 yen, in accordance with buying and selling conditions (referred to as buying and selling conditions 5003) corresponding to a specified classification (which may be considered a specified label, and is referred to as classification 5003 (label 5003)).

[0102] Reference numeral 5004 shows a limit sell order for one trading card with a limit price of 2,900 yen, in accordance with the buying and selling conditions (referred to as buying and selling conditions 5004) corresponding to a specified classification (which may be considered a specified label, and is referred to as classification 5004 (label 5004)).

[0103] Reference numerals 6001 to 6004 show examples of limit buy orders by buyers.

[0104] Reference numeral 6001 shows a limit buy order for three trading cards with a limit price of 2,300 yen, in accordance with buying and selling conditions (referred to as buying and selling conditions 6001) corresponding to a specified classification (which may be considered a specified label, and is referred to as classification 6001 (label 6001)).

[0105] Reference numeral 6002 shows a limit buy order for two trading cards with a limit price of 2,400 yen, in accordance with buying and selling conditions (referred to as buying and selling conditions 6002) corresponding to a predetermined classification (which may be considered a predetermined label, and is referred to as classification 6002 (label 6002)).

[0106] Reference numeral 6003 shows a limit buy order for two trading cards with a limit price of 2,400 yen, in accordance with buying and selling conditions (referred to as buying and selling conditions 6003) corresponding to a predetermined classification (which may be considered a predetermined label, and is referred to as classification 6003 (label 6003)).

[0107] Reference numeral 6004 shows a limit buy order for one trading card with a limit price of 2,400 yen, in accordance with buying and selling conditions (referred to as buying and selling conditions 6004) corresponding to a predetermined classification (which may be considered a predetermined label, and is referred to as classification 6004 (label 6004)).

[0108] Reference numeral 6005 shows a limit buy order for one trading card with a limit price of 2,500 yen, in accordance with buying and selling conditions (referred to as buying and selling conditions 6005) corresponding to a predetermined classification (which may be considered a predetermined label, and is referred to as classification 6005 (label 6005)).

[0109] According to the above explanation of Figure 7, sellers who want to sell trading cards and buyers who want to buy trading cards will meet in one place, making it possible to trade (buy and sell) at the optimal price.

[0110] The above description of the double auction system for trading cards according to the second embodiment of the present invention (an example of a double auction system for trading cards) can be applied to the basic configuration of the double auction system according to the first embodiment of the present invention described above, and to the double auction system for used cars according to the third embodiment of the present invention described below, unless there is any particular technical contradiction.

[0111] <4. Third embodiment (example of a double auction system for used cars)> A double auction system for used cars according to a third embodiment of the present invention (an example of a double auction system for used cars) will be described.

[0112] Used cars, even if they are the same model and generation, are usually treated as unique products because detailed terms of sale are set widely, such as color, availability of optional parts, mileage, whether smoking is permitted inside the car, etc. Therefore, in a typical used car sale, the buyer goes around used car dealerships, comparing the cars currently on the market and searching for the one that is closest to the used car he or she wants.

[0113] When the present invention is applied to the double auction system for used cars of the third embodiment, it is possible to implement a form in which each order book classified by vehicle type has purchase and sale conditions corresponding to detailed classifications such as color, optional parts, mileage, vehicle inspection period, and storage state. A buyer can efficiently purchase a desired used car on the market or solicit a desired used car by inputting the purchase and sale conditions of the desired used car and placing a purchase order. Here, the double auction system for used cars of the third embodiment according to the present invention may include a mechanism in which a used car that has been agreed on in the system is temporarily removed from the order book in the form of a provisional agreement, and the buyer directly checks the actual used car that has been provisionally agreed on and then determines whether or not the transaction is concluded. In addition, a seller can sell a used car that he or she wants to sell by checking the market price and demand for the used car through the double auction system for used cars of the third embodiment according to the present invention, not based on the subjective opinion of the person in charge of purchase appraisal estimates, and by comparing it with actual demand.

[0114] The above description of the double auction system for used cars according to the third embodiment of the present invention (an example of a double auction system for used cars) can be applied to the basic configuration of the double auction system according to the first embodiment of the present invention and the double auction system for trading cards according to the second embodiment of the present invention, unless there is any particular technical contradiction.

[0115] Incidentally, the present invention is not limited to at least any of the above-mentioned basic configuration of the double auction system of the first embodiment (an example of the basic configuration of a double auction system), the double auction system for trading cards of the second embodiment (an example of a double auction system for trading cards), and the double auction system for used cars of the third embodiment (an example of a double auction system for used cars), and it goes without saying that various modifications are possible within the scope of the gist of the present invention.

[0116] Furthermore, the effects described in this specification are merely examples and are not limiting, and other effects may of course also be present.

[0117] Furthermore, the present invention can also have the following configuration. [1] a buyer terminal used by a buyer of at least one kind of good; a seller terminal used by a seller of at least one type of good; A double auction device, the buyer terminal and the seller terminal are connected to the double auction device in a communicable state; The double auction device comprises: a buyer information processing unit that processes the buyer information received from the buyer terminal; a seller information processing unit that processes seller information received from the seller terminal; a buying and selling condition setting unit that collects at least one type of goods into at least one order book, performs classification identification to identify at least one classification to which the at least one type of goods belongs, and sets at least one buying and selling condition corresponding to the at least one classification; a transaction possibility determination unit that determines transaction possibility based on the buyer information and the seller information; a transaction processing unit that, when the transaction possibility determination unit determines that the transaction is possible, determines a transaction price for the at least one kind of good and processes the transaction of the at least one kind of good; At least one of the buyer information processed by the buyer information processing unit and the seller information processed by the seller information processing unit includes information regarding the at least one condition of sale and purchase set by the condition of sale setting unit. [2] The double auction system according to [1], wherein the buyer information is information regarding a purchase order according to the at least one condition of sale specified by the buyer. [3] The buying and selling conditions setting unit sets a plurality of the buying and selling conditions, The double auction system according to [1], wherein the buyer information is information that specifies the multiple buying and selling conditions as a set of logical sums and / or logical products. [4] The double auction system according to any one of [1] to [3], wherein the seller information is information regarding a selling order in accordance with the at least one selling condition specified by the seller. [5] The buying and selling conditions setting unit sets a plurality of the buying and selling conditions, The double auction system according to any one of [1] to [3], wherein the seller information is information that specifies the plurality of buying and selling conditions as a set of logical sums and / or logical products. [6] The double auction system according to any one of [1] to [3], wherein the seller information is information regarding one of the classifications to which one of the goods belongs. [7] The double auction system according to any one of [1] to [3], wherein the seller information is information about one of the categories to which the multiple types of goods belong. [8] The double auction system described in any one of [1] and [4] to [7], wherein the transaction feasibility determination unit determines the transaction feasibility based on buyer information regarding a limit buy order conforming to the at least one buying and selling condition specified by the buyer and seller information regarding a market sell order. [9] The double auction system described in any one of [1] to [3], wherein the transaction feasibility determination unit determines the transaction feasibility based on seller information regarding a limit sell order conforming to the at least one buying and selling condition specified by the seller and buyer information regarding a market buy order.

[10] The double auction system described in any one of [1] to [9], wherein the buying and selling condition setting unit performs classification identification to identify the at least one classification of the at least one type of good based on a threshold value possessed by the at least one type of good. [Explanation of symbols]

[0118] 1. Double auction device, 10. Buyer information processing section, 20. Seller information processing section, 30... Purchase and sale condition setting section, 40: Transaction feasibility determination unit; 50...Transaction processing unit, 60 (60-1, 60-2, 60-3) ···Buyer terminal, 70 (70-1, 70-2, 70-3) ··· Seller terminal, 80...Network, 100···Double auction system.

Claims

1. A buyer terminal used by a buyer of at least one kind of good; a seller terminal used by a seller of at least one type of good; A double auction device, the buyer terminal and the seller terminal are connected to the double auction device in a communicable state; The double auction device, a buyer information processing unit that processes the buyer information received from the buyer terminal; a seller information processing unit that processes seller information received from the seller terminal; a buying and selling condition setting unit that collects at least one type of goods into at least one order book, performs classification identification to identify at least one classification to which the at least one type of goods belongs, and sets at least one buying and selling condition corresponding to the at least one classification; a transaction possibility determination unit that determines transaction possibility based on the buyer information and the seller information; a transaction processing unit that, when the transaction possibility determination unit determines that the transaction is possible, determines a transaction price for the at least one kind of good and processes the transaction of the at least one kind of good; At least one of the buyer information processed by the buyer information processing unit and the seller information processed by the seller information processing unit includes information regarding the at least one selling condition set by the selling condition setting unit.

2. 2. The double auction system according to claim 1, wherein said buyer information is information regarding a purchase order according to said at least one condition of sale specified by said buyer.

3. The buying and selling conditions setting unit sets a plurality of the buying and selling conditions, 2. The double auction system according to claim 1, wherein the buyer information specifies the plurality of buying and selling conditions as a set of logical sums and / or logical products.

4. 2. The double auction system according to claim 1, wherein said seller information is information regarding a selling order according to said at least one selling condition specified by said seller.

5. The buying and selling conditions setting unit sets a plurality of the buying and selling conditions, 2. The double auction system according to claim 1, wherein the seller information specifies the plurality of buying and selling conditions as a set of logical sums and / or logical products.

6. 2. The double auction system according to claim 1, wherein the seller information is information relating to one of the categories to which one of the goods belongs.

7. 2. The double auction system according to claim 1, wherein the seller information is information relating to one of the categories to which a plurality of types of the goods belong.

8. 2. The double auction system according to claim 1, wherein the transaction possibility determination unit determines the transaction possibility based on buyer information regarding a limit buy order conforming to the at least one buying and selling condition specified by the buyer and seller information regarding a market sell order.

9. 2. The double auction system according to claim 1, wherein the transaction possibility determination unit determines the transaction possibility based on seller information regarding a limit sell order conforming to the at least one buying and selling condition specified by the seller and buyer information regarding a market buy order.

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