Abstract:
Disclosed is the purchase information collecting method capable of collecting reliable purchase information about any kind of commodity using a network. In the purchase information collecting method, used is a server apparatus capable of communicating with a computer managed (operated) by a seller and a computer operated by a purchasers, stores, when receiving sales information that is capable of identifying a deal about a commodity and is generated and transmitted by the computer managed by the seller, the received sales information on the first storing part. The server apparatus, when receiving purchase information that consists of personal information of a purchaser of a commodity and the sales information that is presented to the purchaser by a seller of the commodity, judges whether the sales information included in the received purchase information is stored in the first storing part, and, if the sales information is stored, stores the received purchase information as valid purchase information in the second storing part.

Description:
BACKGROUND OF THE INVENTION  
         [0001]    1. Field of the Invention  
           [0002]    The present invention relates to a purchase information collecting method and purchase information collecting apparatus for collecting information about purchased commodity and its purchaser using a network, and to a purchase information collecting program for making a computer connected with a network to perform the purchase information collecting method. The present disclosure also relates to subject matter contained in Japanese Patent application No. 2001-103022 (filed on Apr. 2, 2001) and Japanese Patent application No. 2001-273285 (filed on Sep. 10, 2001), which are expressly incorporated herein by reference in its entirety.  
           [0003]    2. Description of the Related Art  
           [0004]    There are some retailers that collect, in order to have a better understanding of customers&#39; needs and behavior, purchase information consisting of information on sold commodity and personal information on customer purchased the commodity in the following way.  
           [0005]    The retailers ask their customers to gain a membership which entitles one to buy commodity at reduced price by submitting his or her personal information (name, address, age, occupation, etc.). When a customer submits his or her personal information to such a retailer, the retailer gives a membership card (magnetic card or IC card) recording unique member number, and stores the submitted personal information in a member database as information related to the member number. The retailer, when selling one or more commodities to a member (customer having the membership card), asks the member to show his (or her) membership card. The retailer, when selling commodity to a member, reads the member number from the membership card and then stores information about the purchased commodities as information associated with the read member number, thereby obtaining purchase information.  
           [0006]    Purchase information is useful for all sorts of companies, since the better understanding of purchasers&#39; needs and behavior enables company to minimize under- or overstocking, or to conduct to each customer an customized advertising (direct-mail advertising and the likes).  
           [0007]    The companies such as manufactures or wholesalers, however, cannot collect purchase information in the method above, because they have no opportunity of contacting the purchasers directly. Therefore, these companies adopt different methods for collecting purchase information.  
           [0008]    For example, some manufacturers that make expendables such as foods or office supplies collect purchase information by asking purchasers to send a postal matter (application postcard or letter) containing an evidence that one or more commodities are purchased (for instance, application seal affixed on commodity, portion of wrapping where the bar code is printed) and personal information using a gift or better after-sales service as an incentive to make purchaser to send the postal matter. Furthermore, some manufactures that makes commodities such as electric products, software product, etc. collect purchase information by web page to which purchaser can input the identifier assigned to the purchased commodity (product ID, serial number) and his or her personal information also using a gift or better after-sales service as an incentive.  
           [0009]    The former method is inferior to the above-mentioned method adopted by retailers in the point that enough amount of purchase information to perform accurate trend analysis cannot be collected, because purchaser who considers the work required to send the above-mentioned postal matter (for instance, the work to prepare the demanded evidence, stick the evidence on an application form, fill in the application form with personal information, and put the application form in a mailbox) is worth doing for the incentive never sends the postal matter.  
           [0010]    On the other hands, use of the latter method allows a company to collect purchase information about most of sold commodities, because filling in data to the web page can be done more easily than sending postal matter. However, to collect accurate purchase information wit using this method, companies must assign identifier which is not easily forged to each commodity but not to each kind of commodity, because, if such identifier is not assigned to each commodity, company cannot obtain see trough frauds to get the incentives, and therefore the company cannot collect reliable purchase information.  
           [0011]    Accordingly, the objects of the present invention are to provide a collecting purchase information method and a collecting purchase information apparatus capable of collecting reliable purchase information about any kind of commodity using a network, and to provide a purchase information collecting program which is able to make a computer connected with a network to function as the server apparatus for performing the purchase information collecting method.  
         SUMMARY OF THE INVENTION  
         [0012]    To accomplish the above objects, according to the purchase information collecting method of the present invention, a server apparatus capable of communicating with a computer managed (operated) by a seller and a computer operated by a purchasers, stores, when receiving sales information that is capable of identifying a deal about a commodity and is generated and transmitted by the computer managed by the seller, the received sales information on the first storing part. When receiving purchase information that consists of personal information of a purchaser of a commodity and the sales information that is presented to the purchaser by a seller of the commodity, the server apparatus judges whether the sales information included in the received purchase information is stored in the first storing part, and, if the sales information is stored, stores the received purchase information as valid purchase information in the second storing part.  
           [0013]    That is, according to the purchase information collecting method of the present invention, each piece of received purchase information is verified with using pieces of sales information that are transmitted from sellers and are stored in the first storing part. Since verification with sales information can be done even if identifier is not assigned to each commodity and use of the network enables each purchase to transmit purchase information easily, use of this method allows any company to collect reliable, enough amount of purchase information to perform accurate trend analysis. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0014]    These and other objects and advantages of the present invention will become clear from the following description with reference to the accompanying drawings, wherein:  
         [0015]    [0015]FIG. 1 is a block diagram showing a purchase information collecting system used for performing purchase information collecting method;  
         [0016]    [0016]FIG. 2 is a diagram showing a configuration of a commodity master file in a purchase selling system included in the purchase information collecting system;  
         [0017]    [0017]FIG. 3 is a diagram showing a configuration of a purchase information database in the purchase selling system;  
         [0018]    [0018]FIG. 4 is a flowchart showing operation procedures of the purchase selling system under the control of a selling processing program;  
         [0019]    [0019]FIG. 5 is a flowchart showing operation procedures of the purchase selling system under the control of a sales information transmission processing program;  
         [0020]    [0020]FIG. 6 is a diagram showing a configuration of an original sales information database in a purchase information collecting system included in the purchase information collecting system;  
         [0021]    [0021]FIG. 7 is a diagram showing a configuration of a purchase information database in the purchase information database in the purchase information collecting system;  
         [0022]    [0022]FIG. 8 is a flowchart showing operation procedures of the purchase information collecting server under the control of a purchase information collecting and evaluating program;  
         [0023]    [0023]FIG. 9 is a flowchart showing operation procedures of the purchase information collecting server under the control of a purchase information collecting and evaluating program;  
         [0024]    [0024]FIG. 10 is a flowchart showing operation procedures of a user terminal;  
         [0025]    [0025]FIG. 11 is a diagram showing a configuration of purchase information input screen;  
         [0026]    [0026]FIG. 12 is a diagram showing a configuration of purchase information notification information;  
         [0027]    [0027]FIG. 13 is a flowchart of purchase information evaluation processing performed in step S 305  of FIG. 9;  
         [0028]    [0028]FIG. 14 is a diagram showing purchase information added to the sales information database;  
         [0029]    [0029]FIG. 15 is a diagram showing a configuration of sales information notification information. 
     
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0030]    Embodiments of the present invention will hereinafter be described with reference to the accompanying drawings.  
         [0031]    [0031]FIG. 1 is a block diagram showing the configuration of a purchase information collecting system used to perform purchase information collecting method in one embodiment of the present invention.  
         [0032]    The purchase information collecting system is a network system including plural purchase information collecting servers  1 , plural user terminals  2 , and plural commodity selling systems  3 , which can communicate with each other through the network N, though only one purchase information collecting server  1  and one user terminal  2  and one commodity selling systems  3  are illustrated in FIG. 1.  
         [0033]    Each purchase information collecting server  1  included in this purchase information collecting system is a server system (computer) that is operated by a manufacture to collect pieces of purchase information (information which consists of personal information on the person who purchase a commodity and information about the purchased commodity) on its own commodities.  
         [0034]    Each commodity selling system  3  included in the purchase information collecting system is a system that is located on a retail store to sell commodities. Note that, the commodity selling system  3  shown in this figure is the one that will be located on a small-scale retail store.  
         [0035]    Each user terminal  2  included in the purchase information collecting system is an apparatus that is used by person who purchased one or more commodities in the shop with the commodity selling system  3  to sell the purchase information to a manager of a certain purchase information collecting server  1  (to the manufacture that manufactured the commodities) through network N. The present purchase information collecting system includes, as this user terminal  2 , an apparatus that consists of a CPU  20 , a communication adapter  21 , a display unit  22 , an input unit  23 , a RAM  24 , a hard disk  25 , etc., and is provided with an OS  26  and a browser  27  in the hard disk  25 . That is, a computer capable of browsing the Web pages is used as the user terminal  2  in the purchase information collecting system.  
         [0036]    Hereinafter, based on what has been described so far as a premise, configuration and operation of the purchase information collecting system will be explained in depth.  
         [0037]    First of all, details of the commodity selling system  3  illustrated in FIG. 1 are discussed.  
         [0038]    This commodity selling system  3  is a kind of an electronic cash register, and is composed of a CPU  30 , a communication adapter  31 , a RAM  32 , a keyboard  33 , a bar-code reader  34 , a hard disk  35 , a display unit  28 , a print unit  29 , etc.  
         [0039]    The CPU  30  is a central processing unit that controls this commodity selling system  3 . The RAM  32  is a main storage that is used for storing various programs and data. The RAM  32  is also used as a work area of CPU  30  (program). The communication adapter  31  is a device (modem etc.) to communicate with other units on the network N. The keyboard  33  is an input unit consisting of a ten key pad for inputting the number of purchased commodities, a total button for inputting direction to calculate the total, and so on. The bar-code reader  34  is a unit which reads the bar code (JAN (Japan article number) code in this embodiment) printed on the commodity. The display unit  28  is a unit for presenting subtotal, total, and the likes to the store clerk and the purchaser. This display unit  28  generally consists of two liquid crystal displays. The print unit  29  is a unit for printing the receipt that will be handed to the purchaser.  
         [0040]    The hard disk  35  is an auxiliary storage that stores various programs and data that CPU  30  uses. In this hard disk  35 , a sales processing program  36 , a sales information transmission processing program  37 , a commodity master file  38 , a sales information database  39 , and a company code master file  40  are stored.  
         [0041]    The company code master file  40  is a file which contains the company code and the company name of the manager of the commodity selling system  3 , the shop code and the shop name of the shop where the commodity selling system  3  is located, pieces of server information the number of which equals to the number of the purchase information collecting servers  1  included in the purchase collecting system. The server information is information containing address information (IP address, E-mail address, telephone number, etc.) of one purchase information collecting server  1  and information (manufacture code in this embodiment; details will be discussed later) indicating what information must be transmitted to the purchase information collecting server  1 .  
         [0042]    The commodity master file  38  is, as schematically shown in FIG. 2, a file containing plural sets of commodity code for a commodity, brand name for the commodity, and sales price (unit price) which the retailer independently set to the commodity. Note that, actual commodity code is information of 12 digits (information consisting of the country code and the commodity manufacture code, which corresponds to EAN UCC company code in EAN code, and the commodity item code, which corresponds to Item reference in EAN code) which excludes the check digit from the information of 13 digits that the bar code (JAN code) indicates, though numerical values of five digits are shown as commodity codes in the FIG. 2 and other FIGs which will be referred to later.  
         [0043]    The Sales information database  39  is, as schematically shown in FIG. 3, a database which can contain plural pieces of sales information each of which consists of a company code, a shop code, a date, a deal number, a commodity code, a unit price, a quantity, and a sum.  
         [0044]    The sales processing program  36  is a program for causing the commodity selling system  3  to function as an electronic cash register. The sales processing program  36  also causes CPU  30  to perform processing of adding the sales information to the purchase information database  39 .  
         [0045]    Concretely, the CPU  30  executing the sales processing program  36  performs the processing whose procedures are shown in FIG. 4.  
         [0046]    That is, when sales processing program  36  is initiated, the CPU  30 , to begin with, initializes the deal number (accurately, variable for the deal number) in step S 001 . Note that, the sales processing program  36  is a program that is used in the way in which it is initiated everyday before the store is opened, and is terminated after the store is closed, or in the way in which it is executed without termination for several days. Further, in this step S 001 , the deal number is initialized to “0” or to the value of the deal number at the point when the termination of the sales processing program  36  is terminated last time.  
         [0047]    In the following step S 002 , the CPU  30  checks whether the bar code is read by the bar-code reader  34 , or whether the commodity code is inputted. If the commodity code is not inputted, the CPU  30  checks whether the total key of the keyboard  33  is pressed in step S 003 . If the total key is not pressed, the CPU  30  again checks whether the commodity code is inputted in step S 002 .  
         [0048]    When detecting the input of the commodity code in the loop consisting of steps S 002  and S 003 , the CPU  30 , in step S 004 , reads the unit price and the brand name associated with the inputted commodity code from the commodity master file  38 , and memorizes the unit price and the brand name together with the commodity code.  
         [0049]    In the following step S 005 , the CPU  30  waits for input of the number of commodities by means of the ten key pad of the keyboard  33 . When the number of commodities is inputted, the CPU  30  calculates, in the following step S 006 , the subtotal about the commodities by multiplying the inputted number and the unit price memorized in step S 004 . Then, the CPU  30  memorizes the inputted number and the calculated subtotal, and displays the brand name, the number and the subtotal on the display unit  28 .  
         [0050]    Thereafter, the CPU  30  enters the loop consisting of steps S 002  and S 003  again, thereby waiting for input of the commodity code of the next commodity or pressing of the total key.  
         [0051]    When detecting that the total key is pressed in step S 003 , the CPU  30  increments the deal number by “1” in step S 007 . If the deal number before the increment is the maximum value of the deal number (for instance, “1999”), the CPU  30  sets the deal number to “1” in this step S 007 .  
         [0052]    Subsequently, in step S 008 , the CPU  30  reads the company code, the company name, the shop code, and the shop name from the company code master file  40 . In other words, the CPU  30  obtains the company code and the company name of the retailer managing the commodity selling system  3 , the shop code and shop name of the shop where the commodity selling system  3  is located.  
         [0053]    Thereafter, the CPU  30  obtains the current date in step S 009 . In the following step S 010 , the CPU  30  calculates the total of the subtotals on the present deal, and displays the calculated total on the display unit  28 . Thereafter, the CPU  30  waits for input of the quantity of money paid by the purchaser.  
         [0054]    When the quantity of money is inputted, the CPU  30  finishes processing of step S 010 , and makes the print unit  29  to output the receipt on which detailed information to the deal is printed in the following step S 011 . More concretely, the CPU  30  makes the print unit  29  to output the receipt on which printed are information corresponding to the company code (company code itself and/or company name), information corresponding to the shop code (shop code itself and/or shop name), the date, the deal number, one or more pieces of information each corresponding to the commodity code (commodity code itself and/or commodity name).  
         [0055]    In the following step S 012 , the CPU  30  generates a piece of sales information for each purchased commodity based on the pieces of information that have been obtained in steps S 001 -S 010 , and adds them to the sales information database  39  (see FIG. 3). Thereafter, the CPU  30  again enters the loop consisting of steps S 002  and S 003 , and waits for input of the commodity code concerning with a next deal.  
         [0056]    Hereinafter, details of the sales information transmission processing program  37  are discussed.  
         [0057]    The sales information transmission processing program  37  is a program that is used in the way in which it is initiated everyday by the clerk after the store is closed (or before the store is opened) or in the way in which it is initiated automatically everyday at the fixed time (for instance, at twelve o&#39;clock midnight).  
         [0058]    As shown in FIG. 5, the CPU  30  executing this sales information transmission program  37 , in step S 101 , reads from the sales information database  39  pieces of the sales information for one day (usually, for the preceding day) to be processed, and memorize them on RAM  32 .  
         [0059]    Then, the CPU  30  enters the loop consisting of steps S 102 -S 105 .  
         [0060]    In step S 102  of this loop, the CPU  30  reads one unprocessed server information from the company code master file  40 , and an identify the address information and a manufacture code included in it as target server information and target manufacture code, respectively.  
         [0061]    In the following step S 103 , the CPU  30  extracts all pieces of sales information on the commodities of the manufacture that identified by the target manufacture code (all pieces of sales information including the commodity code that contains the target manufacture code) from the pieces of sales information on RAM  32 .  
         [0062]    In the following step S 104 , the CPU  30  transmits sales information notification information that contains the extracted sales information to the unit having the target server address (i.e., the purchase information collecting server  1  managed by the manufacture identified by the target manufacture code). If no sales information is extracted in step S 103 , the CPU  30  does nothing in this step S 104 .  
         [0063]    In the following step S 105 , the CPU  30  checks whether all pieces of server information in the company code master file  40  have been processed. If unprocessed server information remains, the CPU  30  reads another piece of server information from the company code master file  40  in step S 102 .  
         [0064]    If all pieces of server information in the company code master file  40  have been processed, the CPU  30  ends operation according to the sales information transmission processing program  37 .  
         [0065]    Next, details of the purchase information collecting server  1  are explained.  
         [0066]    The purchase information collecting server  1  is, as shown in FIG. 1, a computer consisting of a CPU  10 , a communication adapter  11 , a RAM  12 , a hard disk  13 , etc. The hard disk  13  of the purchase information collecting server  1  stores a sales information acquisition program  14 , a purchase information collection and evaluation program  15 , a purchase information analysis program  16 , a purchase information database  18 , and a purchase information input screen data  19 .  
         [0067]    The purchase information input screen data  19  is a data for making the user terminal  2  (browser  27 ) to display a purchase information input screen (a king of a Web page).  
         [0068]    The original sales information database  17  is a database for storing plural pieces of sales information that are transmitted from the commodity selling systems  3  as elements of the above-mentioned sales information notification information. This original sales information database  17  is, as shown in FIG. 6, so configured as to be able to store a U-flag which takes the value of “1” or “0” for each piece of sales information. The U-flag is a data indicating that the sales information has been already used for verifying the purchase information (details will be discussed later). When a piece of sales information is added to the original sales information database  17 , the U-flag for the added information is set to “0”.  
         [0069]    The purchase information database  18  is a database for holding pieces of collected purchase information (information which consists of the sales information and the personal information). As shown in FIG. 7, the purchase information database  18  is so configured as to be able to hold an evaluation result identifier for each piece of purchase information. The evaluation result identifier is a data indicating the evaluation result concerning the reliability of the purchase information. As the evaluation result identifier, “OK” indicating that the purchase information is reliable (valid), or “NG” indicating that the purchase information is unreliable (invalid), or “UNIDENTIFIED” indicating that the reliability of the purchase information cannot be identified is set.  
         [0070]    The purchase information analysis program  16  is a program for statistical analysis of the plural pieces of sales information (usually, pieces of sales information with the evaluation result identifier “OK”) in the purchase information database  18 . The manager (manufacture) of the purchase information collecting server  1  obtains data for the product development strategy and/or the sales strategy using this purchase information analysis program  16 .  
         [0071]    The sales information acquisition program  14  is a program that is always executed by CPU  10 .  
         [0072]    As shown in FIG. 8, the CPU  10  executing the sales information acquisition program  14  usually monitors receiving of the sales information notification information (see step S 104  in FIG. 5) from the commodity selling systems  3  in step S 201 . When receiving the sales information notification information transmitted by one commodity selling system  3 , the CPU  10 , in step S 202 , adds all pieces of sales information included in the received sales information notification information to the original sales information database  17 , and sets each U-flag of the added sales information to “0”.  
         [0073]    After performing such processing in step S 202 , the CPU  10  again waits for receiving of the sales information notification information in step S 201 .  
         [0074]    The purchase information collection and evaluation program  15  is a program for making the CPU  10  to collect purchase information and for causing the purchase information collecting server  1  as a Web server computer. That is, the purchase information collection and evaluation program  15  includes Web server program and application programs such as CGI programs.  
         [0075]    [0075]FIG. 9 is a flowchart showing the operation procedures of the CPU  10  under the control of the purchase information collection and evaluation program  15 .  
         [0076]    As shown in this flowchart, the CPU  10  executing the purchase information collection and evaluation program  15  usually monitors (waits for) receiving of various HTTP requests in step S 301 . When receiving a HTTP request, the CPU  10  distinguishes the kind of HTTP request in step S 302 , and performs processing corresponding to the distinction result in step S 303 , step S 304 , or steps S 305 -S 307 .  
         [0077]    More concretely, in step S 301 , the CPU  10  monitors receiving of a purchase information input screen request, a purchase information notification request, and other requests.  
         [0078]    If judging that the received request is other request in step S 302 , the CPU  10  performs the processing corresponding to the received request in step S 304 . Thereafter, the CPU  10  monitors receiving of HTTP requests again in step S 301 .  
         [0079]    The purchase information input screen request is a request that is transmitted by the user terminal  2 . The user terminal  2  transmits this purchase information input screen request when, for example, the browser  27  is initiated and then the URL for the purchase information input screen is inputted into the address bar of the browser window.  
         [0080]    When judging that the received HTTP request is the purchase information input screen request in step S 302 , the CPU  10  transmits the purchase information input screen data  19  in the hard disk  13  back to the user terminal  2  which has transmitted the purchase information input screen request. Thereafter, the CPU  10  monitors receiving various HTTP requests in step S 301 .  
         [0081]    The purchase information notification request is a HTTP request that is transmitted by the user terminal  2  that received the purchase information input screen data  19 . Therefore, before explaining the operation of the CPU  10  about the purchase information notification request, the operation of the user terminal  2  which received purchase information input screen data  19  (in other words, contents of the purchase information input screen data  19 ) is discussed.  
         [0082]    [0082]FIG. 10 is the flowchart showing the operation procedures of the CPU  20  from receiving the purchase information input screen data  19  until transmitting the purchase information notification request.  
         [0083]    As shown in this flowchart, the CPU  20  (browser  27 ) receiving purchase information input screen data  19  performs, in step S 401 , processing for displaying the purchase information input screen in the browser window based on the received purchase information input screen data  19 .  
         [0084]    In this step S 401 , for instance, the purchase information input screen shown in FIG. 11 is displayed. That is, displayed is the purchase information input screen provided with text boxes  51 - 55 , a commodity list box  56 , a deal information input area  57 , a “BACK” button  60 , a “NEXT” button  61 , and a “SUBMIT” button  50 .  
         [0085]    The text boxes  51 - 55  on this purchase information input screen are controls into which the user should set the name, the ZIP code, the address, the age, and the occupation.  
         [0086]    The commodity list box  56  is a control (drop down list box) which the user should manipulate so as to appear the commodity code and brand name of the purchased commodity in it.  
         [0087]    The deal information input area  57  is an area where arranged are plural sets of six kinds of controls (two drop down list boxes and four text boxes) into which the user should set the company name, the shop name, the purchase day, the deal number, the unit price, and the quantity about the purchased commodity.  
         [0088]    The “NEXT” button  61  is a button which the user should press to edit (to newly input, to verify, to alter) values about the following commodity. The “BACK” button  60  is a button which the user should press to edit (to verify, to alter) the values about the preceding commodity. The “SUBMIT” button  50  is a button that the user should press when the input of various values is completed. Note that, the purchase information input screen displayed in step S 401  is the one that no information is presented in each control, though, in the controls on the purchase information input screen of FIG. 11, various pieces of information (name and ZIP code, etc.) are shown.  
         [0089]    After finishing the processing of step  401 , the CPU  20  waits for user&#39;s operation to the purchase information input screen. When the user operates the purchase information input screen, the CPU  20  distinguishes kind of operation instep S 403 , and performs processing corresponding to the distinction result in one step among steps S 404 -S 407 .  
         [0090]    Concretely, when operation except for pressing “BACK” button  60 , “NEXT” button  61  or “SUBMIT” button  50  is performed, the CPU  20  performs, in step S 404 , processing corresponding to the operation. In this step S 404 , the CPU  20  performs, for instance, processing for displaying in the text box  51  a character string (name) inputted by the user, processing for displaying the list of the commodity codes and the brand names below the commodity list boxes  56 , and for displaying the commodity code and the brand name selected from the list in the commodity list box  56 . Thereafter, the CPU  20  again monitors the user operation to the purchase information input screen in step S 402 .  
         [0091]    When the “NEXT” button  61  is pressed, CPU  20  performs, in step S 406 , processing of memorizing the values inputted in the commodity list box  56  and the deal information input area  57  as the values of the current commodity. Further, the CPU  20  judges whether values concerning the following commodity are already inputted. If the values are already inputted, the CPU  20  displays the values in the commodity list box  56  and the deal information input area  57 , and if not, the CPU  20  clears the commodity list box  56  and the deal information input area  57 . Thereafter, the CPU  20  ends the processing of step S 406 , and waits for the user operation in step S 402 .  
         [0092]    When “BACK” button  60  is pressed, the CPU  20  performs processing of memorizing the values inputted in the commodity list box  56  and the deal information input area  57  as the values of the current commodity in step S 405 . Subsequently, the CPU  20  displays the values of the preceding commodity in the commodity list box  56  and the deal information input area  57 . Thereafter, the CPU  20  ends the processing of step S 405 , and waits for the user operation in step S 402 .  
         [0093]    Incidentally, the “BACK” button  60  is not active when the purchase information input screen is in the state where the values of the first commodity can be inputted, and the “NEXT” button  61  is not active when the purchase information input screen is in the state where some required values are not set.  
         [0094]    When the “SUBMIT” button  50  is pressed, the CPU  20  creates, in step S 407 , the purchase information notification information with the format shown in FIG. 12 by combining the personal information and every piece of sales information that the user inputted directly or indirectly. Then, the CPU  20  transmits the purchase information notification request that is an HTTP request consisting of the created purchase information notification information and a prescribed URL onto the Internet, and then terminates the processing shown in FIG. 10.  
         [0095]    Hereinafter, the operation of the CPU  10  receiving the purchase information notification request is discussed referring again to FIG. 9.  
         [0096]    When detecting that the purchase information notification request is received in step S 302 , the CPU  10  performs the purchase information evaluation processing in step S 305 .  
         [0097]    As shown in FIG. 13, the CPU  10  performing the purchase information evaluation processing extracts the personal information and all pieces of sales information from the received purchase information notification information in step S 501 .  
         [0098]    Thereafter, the CPU  10  enters the loop consisting of steps S 502 -S 509 , and then selects one piece of unprocessed sales information from the pieces of extracted sales information as the target sales information in step S 502 .  
         [0099]    In the following step S 503 , the CPU  10  tries to retrieve from the original sales information database  17  the sales information equivalent to the target sales information with using the company code, the shop code, the date, the deal number and commodity code in the target sales information as search keys. If such sales information (denoted hereinafter as corresponding sales information) is retrieved, the CPU  10  judges whether the U-flag of the corresponding sales information is “0” in step S 504 .  
         [0100]    If the U-flag of the corresponding sales information is “0”, the CPU  10  rewrites the U-flag to “1”, and memorize “OK” as the evaluation result identifier of the target sales information in step S 505 .  
         [0101]    On the other hands, if the U-flag of the corresponding sales information is “1”, the CPU  10  memorize “NG” as the evaluation result identifier of the target sales information in step S 506 .  
         [0102]    If the corresponding sales information is not retrieved in step S 503 , the CPU  10  extracts sales information from the original sales information database  17  with using the company code, the shop code and the date in the target sales information as search keys. And, the CPU  10  recognized the maximum and minimum deal numbers in the extracted sales information. In other word, the CPU  10  performs, in this step S 507 , processing for obtaining the range (minimum and maximum values) of the deal numbers concerning the plural pieces of sales information that are created by the same commodity selling system  3  that created the target sales information at the same day when the target sales information is created.  
         [0103]    In the following step S 508 , the CPU  10  judges whether the deal number of the target sales information falls in the obtained range. If the deal number of the target sales information does not fall in the range, the CPU  10  memorizes the “UNIDENTIFIED” as the evaluation result identifier of the target sales information in step S 509 . That is, in this case, the corresponding sales information on the target sales information may not have been transmitted from the commodity selling system  3 , the “UNIDENTIFIED” indicating that the reliability of the purchase information cannot be identified is therefor memorized as the evaluation result identifier.  
         [0104]    On the other hand, if the deal number of the target sales information falls in the range, the CPU  10  memorizes “NG” as an evaluation result identifier in step S 506 . That is, the CPU  10  branches for “YES” (to step S 509 ) only when the original sales information database  17  holds the sales information on the preceding and following deal to the deal concerning with the target sales information. In this case, there is no possibility of that the corresponding sales information on the target sales information is not yet transmitted from the commodity selling system  3 , “NG” indicating that the purchase information is unreliable is therefore memorized as the evaluation result identifier.  
         [0105]    After deciding the evaluation result identifier on the target purchase information at one step among steps S 505 , S 506  and S 509 , the CPU  10  judges that evaluation of all pieces of extracted sales information is completed in step  510 . If the evaluation of all pieces of sales information is not completed, the CPU  10  proceeds with the loop to evaluate the following sales information.  
         [0106]    If the evaluation of all pieces of sales information is completed, the CPU  10  exits the loop, and then calculates and memorizes the price for the received purchase information notification information by multiplying the number of sales information to which “OK” is given and the prescribed unit price in step S 511 .  
         [0107]    In the following step S 512 , the CPU  10  performs processing of adding to the purchase information database  18  (see FIG. 7) each pieces of the sales information together with its evaluation result identifier and the personal information.  
         [0108]    Thereafter, the CPU  10  terminates the purchase information evaluation processing, and then, in step S 306  in FIG. 9, creates and transmits a procedures completion screen data, which is a data for making the user terminal  2  (browser  27 ) to display a procedures completion screen on which the calculated price is shown, to the user terminal  2  transmitted the purchase information notification request.  
         [0109]    Afterwards, the CPU  10  performs the processing to pay the user the calculated price in step S 307 . Note that, in this step S 307 , the CPU  10  performs, usually, only processing of adding the calculated price to the total price about the user. If the total price becomes higher than a prescribed value, the CPU  10  also performs processing for offering the user the money or article for the total price in the step S 307 .  
         [0110]    Hereinafter, the overall operation of the purchase information collecting system is explained.  
         [0111]    In the explanation, it is assumed that a user whose name, address, age, and occupation are Fujitsu Taro, Tokyo Shinagawa, 30, and office worker respectively purchased one commodity identified by the commodity code “49101” and two commodities each identified by the commodity code “49202” at shop (Tokyo branch of A-supermarket) identified by the company code “001” and the shop code “10” on 2000/12/24. It is also assumed that the commodity selling system  3  on the shop gave the deal number “001” to the deal with Fujitsu Taro, and the commodity of the commodity code “49101” and the commodity of the commodity code “49102” are commodities of the same manufacture.  
         [0112]    In this case, the CPU  30  adds to the sales information database  39  two pieces of sales information schematically shown in FIG. 14.  
         [0113]    If the adding changes the sales information database  39  into the one shown in FIG. 3, the CPU  30  performing the sales information transmitting processing transmits to the purchase information collecting server  1  that is managed by the manufacture of commodities of the commodity codes “49101” and “49102” the purchase information notification information schematically shown in FIG. 15.  
         [0114]    The CPU  10  in the purchase information collecting server  1  receiving this purchase information notification information adds each piece of purchase information in the purchase information notification information together with the U-flag of “0” to the original sales information database  17 . Hence, the original sales information database  17  becomes, for instance, the one shown in FIG. 6.  
         [0115]    If the CPU  10  receives, in this condition, the purchase information notification information (the purchase information notification request) shown in FIG. 12 (or if the user “Fujitsu Taro” operates his user terminal  2  so as to display the purchase information input screen shown in FIG. 11 and then presses the “SUBMIT” button  50 ), the CPU  10  operates as follows.  
         [0116]    The CPU  10  begin to perform processing of steps S 305 -S 307  in FIG. 9, and performs the purchase information evaluation processing (S 305 , FIG. 13) at first.  
         [0117]    In the purchase information evaluation processing, the sales information, which containing the company code “001”, the shop code “10”, the date “2000/12/24” and the deal number “001”,is evaluated as the reliable one because the corresponding sales information exists in the original sales information database  17  and its U-flag is “0”.  
         [0118]    On the other hand, the sales information, which containing the company code “002”, the shop code “222”, the date “2000/12/25” and the deal number “066”, is evaluated as the not-reliable one because in the purchase information database  17  the corresponding sales information is not stored and two pieces of sales information on the deal before and after the deal on the sales information are stored.  
         [0119]    The sales information, which containing the company code “003”, the shop code “011”, the date “2000/12/25” and the deal number “010”, is evaluated as the one the reliability of which cannot be identified, because there is no sales information containing the company code “003” in the original sales information database  17 .  
         [0120]    Then, in steps S 512 , based on these evaluation results, the purchase information notification information is, as shown in FIG. 7, stored into the purchase information database  18  as three pieces of purchase information to which “OK”, “NG”, and “UNIDENTIFIED” are set respectively. Incidentally, because only one piece of sales information is judged to be reliable, in step S 307 , performed is processing of paying the price for one piece of sales information to the user.  
         [0121]    In the present purchase information collection system, as mentioned before, using the purchase information analysis program  16 , various data for the product development strategy and/or the sales strategy are derived from the pieces of purchase information with the evaluation result identifier “OK” in this purchase information database  18 .  
         [0122]    Purchase information with the evaluation result identifier “OK” in the purchase information database  18  is information the validity of which is confirmed by checking the existence of the corresponding sales information. Moreover, since the purchase information collecting system is so configured that each purchaser can offer (sell) purchase information easily, many pieces of sales information are collected and stored in the purchase information database  18  of the purchase information collecting system.  
         [0123]    Consequently, according to the present purchase information collection system, the manager of each purchase information collection server  1  can get extremely effective data for the product development strategy and/or the sales strategy base on the collected purchase information.  
         [0124]    &lt;Modified Example &gt; 
         [0125]    The purchase information collecting system discussed above can be modified in a variety of forms. For instance, the purchase information collecting system is the system in which each commodity selling system  3  in the shop transmits the sales information notification information. The purchase information collecting system, however, may also be configured as a system in which the POS system including a main server computer which has the ability to transmits the sales information notification information, and plural POS terminals each of which dose not have the ability to transmits the sales information notification information is used in place of plural commodity selling systems  3  managed by the same manufacture. Moreover, the commodity selling system  3  may be configured to transmit sales information to the purchase information collecting server  1  every time a deal is made.  
         [0126]    Further, the purchase information collecting system may be configured to have the purchase information collecting server  1  that is managed by a wholesale company or a research company. Note that, such purchase information collecting system can be realized by modifying the company code muster file  40  to the one containing information that consists of address information and plural manufacture codes (or plural commodity codes) as server information, and modifying processing of step S 103  to the one in which all pieces of sales information containing one of plural manufacture codes (or commodity codes) in the server information is extracted.  
         [0127]    Moreover, the purchase information collecting system may be configured so that purchase information notification information is transmitted by E-mail. The purchase information collecting system may be configured so that the purchaser is notified of sales information by means of record on an IC card or by means of a printed matter or an electronic data via a credit card company.  
         [0128]    Furthermore, if, as commodity selling system  3  (unit which decides the deal number), used is unit that cannot identified by the company code and the shop code but the company code and the shop code and the unit number (register number), it is necessary to modify the purchase information collecting system so that sales information including the unit number is transmitted to the purchase information collecting server  1 .