Product sales data processing device, product sales method, and program

Abstract

To improve metering sales.SOLUTION: A commodity sales data processing device for metering and registering a commodity by a customer's operation includes metering means for metering weight and display means for displaying an operable screen. The display means displays a screen that enables selection of a commodity after tare weight that is weight of a container is registered.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a product sales data processing device, a product sales method, and a program. [Background technology]

[0002] For example, a system is known in which products are weighed and sold (volume sales) (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-108817 Summary of the Invention [Problem to be solved by the invention]

[0004] However, there was room for improvement in metered sales.

[0005] The present invention has been made in view of the above circumstances, and its object is to provide a technology for improving metered sales. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, one aspect of the present invention is a product sales data processing device that weighs and registers products through operation by a customer, and is equipped with a weighing means that measures the weight and a display means that displays an operable screen, and the display means displays a screen that allows the user to select a product after the tare weight, which is the weight of the container, is registered. [Brief explanation of the drawings]

[0007] [Figure 1] 1 shows an example of installation of a weighing device 20 according to an embodiment. [Figure 2] FIG. 2 is an explanatory diagram showing an example of the configuration of a weighing device 20. [Figure 3] 10 is an example of information stored in the weighing device 20. [Figure 4] 10 is an example of information stored in the weighing device 20. [Figure 5] 10 is an explanatory diagram illustrating a display on the weighing device 20. FIG. [Figure 6] 10 is an explanatory diagram illustrating a display on the weighing device 20. FIG. [Figure 7] 10 is an explanatory diagram illustrating a display on the weighing device 20. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0008] Figure 1 shows an example of installation of a weighing device 20 according to an embodiment. Figure 1(A) is a front view of a display shelf 1 (including the weighing device 20 and the like installed on the display shelf 1) installed in a display area for products (products sold by weight). Figure 1(B) is a front view of the display shelf 1 (including the weighing device 20 and the like installed on the display shelf 1) diagonally from above.

[0009] In the example shown in FIG. 1, five display containers 100, one weighing device 20, three display containers 200, three display containers 300, and three display containers 310 are installed on the display shelf 1.

[0010] The display container 100 has a storage section (display section) 101, an operating section (rotating section) 102, and a drop opening 103. A customer brings a container under the drop opening, operates (rotates) the operating section 102, and drops the products stored in the storage section 101 through the drop opening 103 into the container.

[0011] Display container 200 has a storage section (display section) 201, an operation section (lid section) 202, and a scoop storage section 204. A customer operates (lifts) operation section 202, and uses a scoop stored in scoop storage section 204 to remove products stored in storage section 201 and place them in the container. In the example shown in FIG. 1, operation section 202 is provided with sensor 203 (details will be described later) that can detect the movement of operation section 202, but sensor 203 does not necessarily have to be provided in operation section 202.

[0012] Display container 300 has a storage section (display section) 301 and an operating section (push section) 302 formed integrally with the outlet. A customer brings a container in front of operating section 302 (outlet) and operates (push) operating section 302 to dispense the products stored in storage section 301 and place them in the container. Display container 310 has a storage section (display section) 311 and an operating section (push section) 312 formed integrally with the outlet. A customer brings a container in front of operating section 312 (outlet) and operates (push) operating section 312 to dispense the products stored in storage section 311 and place them in the container.

[0013] The weighing device 20 weighs the products (i.e., the containers containing the products) placed in the display containers (display containers 100, 200, 300, 310) installed on the display shelf 1 as described above, and displays the sales price (selling price). Note that the sales price (price per weight, etc.) may be displayed in association with each display container.

[0014] Figure 2 is an explanatory diagram showing an example of the configuration of the weighing device 20. In Figures 1 and 2, the same parts are given the same reference numerals. Below, the configuration of the weighing device 20 shown in Figure 2 will be described with reference to Figure 1.

[0015] The weighing device 20 comprises a CPU 21, a ROM 22, a RAM 23, a weighing unit 25, a display unit 26, an audio output unit 27, a printing unit 28, and a communication unit 29. The weighing device 20 is basically operated by a customer.

[0016] The CPU 21 is a central processing unit that controls the operation of the weighing device 20 by reading and executing a program stored in the ROM 22 . The ROM 22 is a read-only memory, and stores various information used by the CPU 21, including programs, for example. The RAM 23 is a read / write memory, and stores various information such as information read from the ROM 22, information acquired via the communication unit 29, and information generated by the CPU 21.

[0017] The weighing unit 25 weighs an item (product, container, etc.) placed on the platform 25a by, for example, a weight detection method using a load cell. The display unit 26 displays various information to customers and also has a touch panel, functioning as an operation unit. The audio output unit 27 outputs audio. For example, the audio output unit 27 outputs audio guidance and the like.

[0018] The printing unit 28 is a printer device that issues media. For example, the printing unit 28 prints the product name, sales price, etc. on the media and discharges (issues) it from the label discharge port 28a. The media printed and issued by the printing unit 28 may be referred to as product labels (or simply labels). A barcode encoding the sales price may be printed on the product label. The communication unit 29 transmits and receives information to and from other devices wirelessly (for example, wireless LAN (Local Area Network), Bluetooth (registered trademark), etc.) or via wired communication. For example, the communication unit 29 receives a product file (described later) from another device.

[0019] Although the weighing device 20 is shown in FIG. 2 as having a CPU 21, a ROM 22, and a RAM 23, the weighing device 20 may instead have an MCU (Micro Controller Unit).

[0020] The weighing device 20 may also be equipped with an imaging unit that captures images of the surrounding area (for example, an image of an item placed on the platform 25a or an image of a customer in front). The weighing device 20 may also be equipped with a scanner unit that optically reads various types of information (barcodes, two-dimensional codes, etc.). The weighing device 20 may also be equipped with a wireless tag reader / writer that reads and writes information from contactless IC tags. The wireless tag reader / writer reads and writes information between the wireless tag (IC tag) and the weighing device 20 via short-range wireless communication using electromagnetic fields, radio waves, etc. The weighing device 20 may also be equipped with a clock function (timekeeping function). A weighing device 20 with a clock function can manage, for example, the current time, the remaining time until a certain time, or the elapsed time since a certain state was reached. The weighing device 20 may also be equipped with a human presence sensor that detects the presence of an operator (customer).

[0021] 3 and 4 show examples of information stored in the weighing device 20. The weighing device 20 stores a product file as shown in FIG. 3. As shown in FIG. 3, the product file includes a product code (product identification information that identifies the product), product name, and price per weight (e.g., selling price per 100g). The weighing device 20 receives and stores the product file from an external device (such as a management device installed in the store (not shown) or a cloud server located outside the store) via the communication unit 29. Note that the product file is an example of a file stored in the weighing device 20, and the weighing device 20 may store files other than the files described above.

[0022] The weighing device 20 also stores (registers) information such as that shown in FIG. 4, which is acquired or generated as the processing progresses. The current weight value shown in FIG. 4(A) is the current weight value. The tare weight value shown in FIG. 4(B) is the weight of the tare (empty container). The product weight value shown in FIG. 4(C) is the weight of the product (the net weight of the product minus the tare weight value). The maximum product weight value shown in FIG. 4(D) is the weight of the largest product in the transaction. The progress status information shown in FIG. 4(E) is information indicating the progress of the processing of the weighing device 20 in response to the operation or action (hereinafter referred to as operation, etc.) of the operator (customer), and is the screen number (screen identification information) of the screen that switches in response to the operator's operation, etc. The product selection information shown in FIG. 4(F) is information indicating the product selected by the customer (the product code of the product selected by the customer). When the weighing device 20 is in the initial state (waiting for a customer), it stores the current weight value "0(g)", tare weight value "0(g)", product weight value "0(g)", maximum product weight value "0(g)", progress status information "GMNo1", and product selection information "-", as shown in Figures 4(A) to 4(F). The progress status information "GMNo1" is the screen number of screen GM1 (described below) that is displayed in the initial state. The product selection information "-" indicates that no product has been selected.

[0023] 5 to 7 are explanatory diagrams illustrating the displays on the weighing device 20. The weighing device 20 displays, for example, the screens shown in Figs. 5 to 7 (screens GM1 to GM11) on the display unit 26 in response to operations by the operator.

[0024] (Basic screens, basic screen transitions on basic screens) With reference to FIG. 5, the basic screens (screens GM1 to GM6) and the basic screen transitions in the basic screens (screen GM1 → screen GM2 → screen GM3 → screen GM4 → screen GM5 → screen GM6 (→ screen GM1)) will be described.

[0025] (Screen GM1) When the weighing device 20 is in its initial state (waiting for customers), it displays the screen GM1. The screen GM1 has a numeric display area HR1, a message MS11 and an image GA31 displayed, and a confirmation button BT40. "Nothing Placed" at the bottom of the screen GM1 indicates that nothing is placed on the platform 25a while the screen (screen GM1) is displayed.

[0026] The numeric display area HR1 is made up of a display area HR1a that displays the weighing value of the container, a display area HR1b that displays the weighing value of the product, a display area HR1c that displays the unit price by weight of the product, and a display area HR1d that displays the total amount. The display in the numeric display area HR1 will be described later.

[0027] Message MS11 is a message that instructs the customer to place an empty container on platform 25a and operate confirmation button BT40. Note that weighing device 20 may read out message MS11 in addition to displaying it on screen GM1. For example, message MS11 may be read out based on the customer's operation. The same applies to other messages on other screens. Image GA31 is an image that instructs the customer to place an empty container on platform 25a. Note that confirmation button BT40 may be made inoperable when nothing is placed on platform 25a.

[0028] (Screen GM1 → Screen GM2) When an empty container is placed on platform 25a and confirmation button BT40 is operated while screen GM1 is being displayed, weighing device 20 displays screen GM2 instead of screen GM1. The weight (measured value) of the empty container placed on platform 25a is assumed to be 22g. "Placed: Container (Empty)" at the bottom of screen GM2 indicates that an empty container is placed on platform 25a while this screen (screen GM2) is being displayed.

[0029] (Screen GM2) The screen GM2 has a numeric display area HR1, a message MS12 and an image GA32 displayed thereon, and a cancel (self) button BT41 arranged thereon. The message MS12 is a message instructing the user to remove (take off) an empty container placed on the platform 25a and fill the empty container with the desired product. The image GA32 is an image instructing the user to remove an empty container placed on the platform 25a. The cancel (self) button BT41 is a button operated when canceling the purchase of a product.

[0030] The weighing device 20 may display screen GM2 after a container containing products for the transaction (i.e., the products placed in the container) has been temporarily placed on the platform 25a (i.e., after screen GM4 has been displayed once). For example, the screens may transition from screen GM2 to screen GM3 to screen GM4 to screen GM3 to screen GM2, or from screen GM2 to screen GM3 to screen GM4 to screen GM9 to screen GM4 to screen GM3 to screen GM2. When displaying screen GM2 after a container containing products for the transaction has been temporarily placed on the platform 25a, the weighing device 20 displays screen GM2 (not shown) on which a Cancel (Call a Store Attendant) button BT42 has been placed instead of the Cancel (Self) button BT41. The Cancel (Self) button BT41 is a cancel button used to cancel the purchase of products without the intervention of a store clerk, and the Cancel (Call a Store Attendant) button BT42 is a cancel button used to cancel the purchase of products with the intervention of a store clerk.

[0031] (Screen GM2 → Screen GM3) If an empty container placed on the platform 25a is removed while the screen GM2 is being displayed, the weighing device 20 displays the screen GM3 instead of the screen GM2. "Placed: None" at the bottom of the screen GM3 indicates that nothing is placed on the platform 25a while the screen (screen GM3) is being displayed.

[0032] (Screen GM3) The screen GM3 has a numeric display area HR1, a message MS13 and an image GA33 displayed thereon, and a cancel (self) button BT41. The message MS13 is a message instructing the user to place the container containing the product on the platform 25a. The image GA33 is an image instructing the user to place the container containing the product on the platform 25a.

[0033] The weighing device 20 may display screen GM3 after a container containing products for the transaction has been temporarily placed on the platform 25a (i.e., after displaying screen GM4 once). For example, there may be a transition from screen GM3 to screen GM4 to screen GM3, or from screen GM3 to screen GM4 to screen GM9 to screen GM4 to screen GM3. When displaying screen GM3 after a container containing products for the transaction has been temporarily placed on the platform 25a, the weighing device 20 displays screen GM3 (not shown) on which a cancel (call a store clerk) button BT42 is placed instead of the cancel (self) button BT41.

[0034] (Screen GM3 → Screen GM4) When a container containing a product is placed on the platform 25a while screen GM3 is being displayed (i.e., when a weight exceeding the weighing value of the tare is detected), the weighing device 20 displays screen GM4 instead of screen GM3. The weight (weighing value) of the container containing the product is assumed to be 626g (i.e., the weight (weighing value) of the product placed in the container is 604g). "Placed: Container (Product)" at the bottom of screen GM4 indicates that a container containing a product is placed on the platform 25a while this screen (screen GM4) is being displayed.

[0035] (Screen GM4) The screen GM4 has a numeric display area HR1 and a product button display area HR2, a message MS14 displayed, and a cancel (call a store clerk) button BT42. The message MS14 is a message that guides the user to select the product to purchase (the product placed in the container). The product button display area HR2 displays product buttons for each product stored (displayed) in the display containers (display containers 100, 200, 300, 310). The "Next" button is used to switch the product button displayed in the product button display area HR2. Each product button may display a price (price by weight, etc.).

[0036] (Screen GM4 → Screen GM5) When a product is selected (when any product button is operated) while screen GM4 is displayed, weighing device 20 displays screen GM5 instead of screen GM4. Assume that hand soap has been selected. "Placed: Container (product)" at the bottom of screen GM5 indicates that a container containing a product is placed on platform 25a while this screen (screen GM5) is displayed.

[0037] (Screen GM5) Screen GM5 has a numeric display area HR1, displays a message MS15 and an image GA35, and is provided with a cancel (call a store clerk) button BT42, a print button BT43, and a back button BT44. Image GA35 is an image showing the product (hand soap) selected in product button display area HR2 of screen GM4. Message MS15 is a message instructing the user to check the product and, if there are no problems (check whether the product selected in product button display area HR2 is shown by image GA35, and if it is shown by image GA35), to operate the print button BT43. Print button BT43 is a button operated when printing and issuing a product label. Back button BT44 is a button operated when going back and starting over.

[0038] (Screen GM5 → Screen GM6) When the print button BT43 is operated while screen GM5 is displayed, the weighing device 20 displays screen GM6 instead of screen GM5. The "Placed: Container (product)" at the bottom of screen GM6 indicates that a container containing a product is placed on the platform 25a while this screen (screen GM6) is displayed.

[0039] (Screen GM6) Screen GM6 has a numeric display area HR1, and displays a message MS16 and an image GA36. Message MS16 is a message instructing the user to attach a label to the container containing the product and to pay at the register. Image GA36 is an image instructing the user to attach a label to the container containing the product.

[0040] (Screen GM6 → Screen GM1) If a container containing a product placed on the platform 25a is removed while screen GM6 is being displayed (i.e., if the weighing value becomes zero (or nearly zero); the same applies to other cases in which a container is removed), the weighing device 20 displays screen GM1 instead of screen GM6. In other words, since the transaction (the transaction to purchase hand soap (604g)) has been completed, the weighing device 20 displays screen GM1 for the next transaction.

[0041] (Other screen transitions on the basic screen) Next, other screen transitions (screen GM3→screen GM2, screen GM4→screen GM3, etc.) in the basic screens (screens GM1 to GM6) will be described.

[0042] (Screen GM3 → Screen GM2) When an empty container is placed on the platform 25a while the screen GM3 is being displayed (i.e., when the weighing device 20 detects a weight that is the same as the weighed value of the container), the weighing device 20 displays the screen GM2 in place of the screen GM3. More specifically, when an empty container is placed on the platform 25a while the screen GM3 on which the Cancel (Self) button BT41 is arranged is being displayed, the weighing device 20 displays the screen GM2 on which the Cancel (Self) button BT41 is arranged in place of the screen GM3 on which the Cancel (Call a Store Attendant) button BT42 is arranged. Furthermore, when an empty container is placed on the platform 25a while the screen GM3 on which the Cancel (Call a Store Attendant) button BT42 is arranged is being displayed, the weighing device 20 displays the screen GM2 on which the Cancel (Call a Store Attendant) button BT42 is arranged in place of the screen GM3 on which the Cancel (Call a Store Attendant) button BT42 is arranged.

[0043] (Screen GM4 → Screen GM3) If a container containing a product placed on the platform 25a is removed while the screen GM4 is being displayed, the weighing device 20 displays the screen GM3 instead of the screen GM4. More specifically, if a container containing a product placed on the platform 25a is removed while the screen GM4 is being displayed, the weighing device 20 displays the screen GM3 on which the cancel (call a store clerk) button BT42 is located.

[0044] (Screen GM5 → Screen GM3) If a container containing a product placed on the platform 25a is removed while the screen GM5 is displayed, the weighing device 20 displays the screen GM3 instead of the screen GM5. More specifically, if a container containing a product placed on the platform 25a is removed while the screen GM5 is displayed, the weighing device 20 displays the screen GM3 on which the cancel (call a store clerk) button BT42 is located.

[0045] (Screen GM5 → Screen GM4) When the back button BT44 is operated while the screen GM5 is being displayed, the weighing device 20 displays the screen GM4 instead of the screen GM5.

[0046] (Other screens, other screen transitions) Next, with reference to FIGS. 5 to 7, other screens (screen GM7 to screen GM11) and other screen transitions (screen GM2→screen GM7, screen GM7→screen GM2, etc.) will be described.

[0047] (Screen GM2 → Screen GM7) When the Cancel (Self) button BT41 is operated while the screen GM2 on which the Cancel (Self) button BT41 is arranged is displayed, the weighing device 20 displays the screen GM7 instead of the screen GM2 on which the Cancel (Self) button BT41 is arranged. The "Placed: Container (Empty)" at the bottom of the screen GM7 indicates that an empty container is placed on the platform 25a while the screen (screen GM7) is displayed.

[0048] (Screen GM7) The screen GM7 has a numeric display area HR1, a message MS17 and an image GA32 displayed thereon, and a confirmation button BT40 and a back button BT44 arranged thereon. The message MS17 is a message instructing the user to remove (remove) an empty container placed on the platform 25a and operate the confirmation button BT40. The image GA32 is an image instructing the user to remove (remove) an empty container placed on the platform 25a. The confirmation button BT40 may be made inoperable when something is placed on the platform 25a (that is, the confirmation button BT40 may be made inoperable on the screen GM7).

[0049] (Screen GM7 → Screen GM2) When the back button BT44 is operated while the screen GM7 is being displayed, the weighing device 20 displays the screen GM2 on which the cancel (self) button BT41 is arranged in place of the screen GM7.

[0050] (Screen GM3 → Screen GM8) When the Cancel (Self) button BT41 is operated while the screen GM3 on which the Cancel (Self) button BT41 is arranged is displayed, the weighing device 20 displays the screen GM8 instead of the screen GM3 on which the Cancel (Self) button BT41 is arranged. "Nothing Placed" at the bottom of the screen GM8 indicates that nothing is placed on the platform 25a while the screen (screen GM8) is displayed.

[0051] (Screen GM8) The screen GM8 has a numeric display area HR1, a message MS18 displayed, and a confirmation button BT40 and a back button BT44. The message MS18 is a message that guides the user to operate the confirmation button BT40.

[0052] (Screen GM8 → Screen GM3) When the back button BT44 is operated while the screen GM8 is being displayed, the weighing device 20 displays the screen GM3 on which the cancel (self) button BT41 is arranged instead of the screen GM8. In addition to the case where the screen GM3 on which the cancel (self) button BT41 is arranged transitions from the screen GM8 to the screen GM3, the screen GM3 also transitions to the screen GM3 on which the cancel (self) button BT41 is arranged, when the back button BT44 is operated while the screen GM8 is being displayed, even when the screen GM2 on which the cancel (self) button BT41 is arranged transitions from the screen GM7 to the screen GM8.

[0053] (Screen GM7 → Screen GM8) When an empty container placed on the platform 25a is removed while the screen GM7 is being displayed, the weighing device 20 displays the screen GM8 in place of the screen GM7.

[0054] (Screen GM8 → Screen GM7) When an empty container is placed on the platform 25a while the screen GM8 is being displayed, the weighing device 20 displays the screen GM7 instead of the screen GM8.

[0055] (Screen GM8 → Screen GM1) When the confirmation button BT40 is operated while the screen GM8 is displayed, the weighing device 20 displays the screen GM1 instead of the screen GM8. In other words, since no product has been placed in the container, the weighing device 20 cancels the transaction and displays the screen GM1 for the next transaction.

[0056] (Screen GM4 → Screen GM9) When the Cancel (Call a Store Attendant) button BT42 is operated while the screen GM4 is displayed, the weighing device 20 displays the screen GM9 instead of the screen GM4. The "Placed: Container (Product)" at the bottom of the screen GM9 indicates that a container containing a product is placed on the platform 25a while the screen (screen GM9) is displayed.

[0057] (Screen GM9) Screen GM9 has a numeric display area HR1, displays a message MS19, and has a store clerk call button BT45 and a back button BT44. Message MS19 (similar to message MS20 on screen GM10 and message MS21 on screen GM11) is a message informing the customer that a product has been placed in the container and that the customer should operate the store clerk call button BT45.

[0058] (Screen GM9 → Screen GM4) When the back button BT44 is operated while the screen GM9 is being displayed, the weighing device 20 displays the screen GM4 instead of the screen GM9.

[0059] (Screen GM5 → Screen GM10) When the Cancel (Call a Store Attendant) button BT42 is operated while the screen GM5 is displayed, the weighing device 20 displays the screen GM10 instead of the screen GM5. The "Placed: Container (Product)" at the bottom of the screen GM10 indicates that a container containing a product is placed on the platform 25a while the screen (screen GM10) is displayed.

[0060] (Screen GM10) The screen GM10 is provided with a numeric display area HR1, displays a message MS20, and has a store clerk call button BT45 and a back button BT44.

[0061] (Screen GM10 → Screen GM5) When the back button BT44 is operated while the screen GM10 is being displayed, the weighing device 20 displays the screen GM5 instead of the screen GM10.

[0062] (Screen GM9, screen GM10 → screen GM11) If a container containing a product placed on the platform 25a is removed while screen GM9 is being displayed, the weighing device 20 displays screen GM11 instead of screen GM9. Also, if a container containing a product placed on the platform 25a is removed while screen GM10 is being displayed, the weighing device 20 displays screen GM11 instead of screen GM10. "Nothing placed" at the bottom of screen GM11 indicates that nothing is placed on platform 25a while that screen (screen GM11) is being displayed.

[0063] (Screen GM11) The screen GM11 is provided with a numeric display area HR1, displays a message MS21, and has a store clerk call button BT45 and a back button BT44.

[0064] (Screen GM11 → Screen GM3) When the back button BT44 is operated while the screen GM11 is displayed, the weighing device 20 displays the screen GM3 on which the cancel (call a store clerk) button BT42 is arranged instead of the screen GM11. In other words, whether there is a transition from the screen GM9 to the screen GM11 or from the screen GM10 to the screen GM11, if the back button BT44 is operated while the screen GM11 is displayed, the screen will transition to the screen GM3 on which the cancel (call a store clerk) button BT42 is arranged.

[0065] (Screen GM2 → Screen GM12 (not shown)) When the Stop (Call a Store Attendant) button BT42 is operated while the screen GM2 on which the Stop (Call a Store Attendant) button BT42 is displayed, the weighing device 20 displays the screen GM12 (not shown) instead of the screen GM2 on which the Stop (Call a Store Attendant) button BT42 is displayed. While the screen GM12 is displayed, an empty container is placed on the platform 25a.

[0066] (Screen GM12 (not shown)) The screen GM12 is provided with a numeric display area HR1, displays a message MS22 (similar to the message MS19), and has a store clerk call button BT45 and a back button BT44.

[0067] (Screen GM3 → Screen GM13 (not shown)) When the Cancel (Call a Store Attendant) button BT42 is operated while the screen GM3 on which the Cancel (Call a Store Attendant) button BT42 is displayed, the weighing device 20 displays the screen GM13 (not shown) instead of the screen GM3 on which the Cancel (Call a Store Attendant) button BT42 is displayed. When the screen GM13 is displayed, nothing is placed on the platform 25a.

[0068] (Screen GM13 (not shown)) The screen GM13 is provided with a numeric display area HR1, displays a message MS23 (similar to the message MS19), and has a store clerk call button BT45 and a back button BT44.

[0069] (The contents of each piece of information in Figure 4, and the display in the numeric display area HR1) Next, the contents (values, information) of each piece of information in Fig. 4 (current weight value in Fig. 4(A), tare weight value in Fig. 4(B), product weight value in Fig. 4(C), maximum product weight value in Fig. 4(D), progress status information in Fig. 4(E), product selection information in Fig. 4(F)) and the display of the numeric value display area HR1 will be explained. As an example, the contents of each piece of information in Fig. 4 while screens GM1 to GM6 shown in Fig. 5 are displayed, and the display of the numeric value display area HR1 on screens GM1 to GM6 will be explained.

[0070] (The contents of each piece of information in Figure 4 while screen GM1 is displayed) 4 stored by the weighing device 20 while the screen GM1 is displayed is as follows: The update of each piece of information will be described later. Current weighing value in Figure 4(A): 0(g) Tare weight value in Figure 4(B): 0(g) Product weight in Figure 4(C): 0(g) Maximum weight of product in Figure 4(D): 0(g) Progress status information in Figure 4(E): "GMNo1 (screen number of screen GM1)" Product selection information in Figure 4(F): "- (product not selected)"

[0071] (Display of numeric display area HR1 on screen GM1) On the screen GM1 (that is, when "GMNo1" is stored as progress status information), the weighing device 20 displays "0" in each of the display areas HR1a to HR1d, as shown in FIG.

[0072] (The information in Figure 4 while screen GM2 is displayed) 4 stored by weighing device 20 while screen GM2 is displayed is as follows: It is assumed that the weight (measured value) of the empty container placed on platform 25a is 22 g. Current weight of Figure 4(A): 22(g) Tare weight value in Figure 4(B): 22(g) Product weight in Figure 4(C): 0(g) Maximum weight of product in Figure 4(D): 0(g) Progress status information for Figure 4(E): GMNo2 (screen number of screen GM2) Product selection information in Figure 4(F): - (product not selected)

[0073] However, in the case of screen GM2, which is displayed (re-displayed) after a container containing a product is temporarily placed on platform 25a (after screen GM4 is temporarily displayed), the maximum product weight value in Figure 4(D) will not be "0 (g)".

[0074] (Display of numeric display area HR1 on screen GM2) On screen GM2 (i.e., when "GMNo2" is stored as progress status information), the weighing device 20 displays the tare weight value "22 (g)" in display area HR1a and displays "0" in each of display areas HR1b to HR1d, as shown in FIG. 5.

[0075] (The contents of each piece of information in Figure 4 while screen GM3 is displayed) While the screen GM3 is displayed, the contents of each piece of information shown in FIG. 4 stored by the weighing device 20 are as follows: Current weighing value in Figure 4(A): 0(g) Tare weight value in Figure 4(B): 22(g) Product weight in Figure 4(C): 0(g) Maximum weight of product in Figure 4(D): 0(g) Progress status information for Figure 4(E): GMNo3 (screen number of screen GM3) Product selection information in Figure 4(F): - (product not selected)

[0076] However, in the case of screen GM3, which is displayed (re-displayed) after a container containing a product is placed on platform 25a (after screen GM4 is displayed), the maximum product weight value in Figure 4(D) will not be "0 (g)".

[0077] (Display of numeric display area HR1 on screen GM3) On screen GM3 (i.e., when "GMNo3" is stored as progress status information), the weighing device 20 displays the tare weight value "22 (g)" in display area HR1a, displays the tare weight value "22 (g)" as a negative number in display area HR1b, and displays "0" in each of display areas HR1c and HR1d, as shown in FIG. 5.

[0078] (The contents of each piece of information in Figure 4 while screen GM4 is displayed) 4 stored by the weighing device 20 while screen GM4 is displayed is as follows: The weight (measured value) of the container containing the product is 626 g (i.e., the weight (measured value) of the product placed in the container is 604 g). Current weight of Figure 4(A): 626(g) Tare weight value in Figure 4(B): 22(g) Product weight in Figure 4(C): 604(g) Maximum weight of product in Figure 4(D): 604(g) Progress status information for Figure 4(E): GMNo4 (screen number of screen GM4) Product selection information in Figure 4(F): - (product not selected)

[0079] (Display of numeric display area HR1 on screen GM4) On screen GM4 (i.e., when "GMNo4" is stored as progress status information), the weighing device 20 displays the tare weight value "22 (g)" in display area HR1a, the product weight value "604 (g)" in display area HR1b, and "0" in each of display areas HR1c and HR1d, as shown in FIG. 5.

[0080] (The information in Figure 4 while screen GM5 is displayed) While screen GM5 is displayed, the contents of the information stored in the weighing device 20 in Fig. 4 are as follows: It is assumed that hand soap has been selected. Current weight of Figure 4(A): 626(g) Tare weight value in Figure 4(B): 22(g) Product weight in Figure 4(C): 604(g) Maximum weight of product in Figure 4(D): 604(g) Progress status information for Figure 4(E): GMNo5 (screen number of screen GM5) Product selection information in Figure 4(F): S001 (product code for hand soap)

[0081] (Display of numeric display area HR1 on screen GM5) On screen GM5 (i.e., when "GMNo5" is stored as progress status information), the weighing device 20 displays the tare weight value "22 (g)" in display area HR1a, the product weight value "604 (g)" in display area HR1b, the price per weight of the product ("hand soap" with product code "S001") "80 (yen / 100g)" in display area HR1c, and "483 (yen)" calculated from the product weight value "604 (g)" and the price per weight "80 (yen / 100g)" in display area HR1d, as shown in FIG.

[0082] (The information in Figure 4 while screen GM6 is displayed) While the screen GM6 is displayed, the contents of each piece of information shown in FIG. 4 stored by the weighing device 20 are as follows: Current weight of Figure 4(A): 626(g) Tare weight value in Figure 4(B): 22(g) Product weight in Figure 4(C): 604(g) Maximum weight of product in Figure 4(D): 604(g) Progress status information for Figure 4(E): GMNo6 (screen number of screen GM6) Product selection information in Figure 4(F): S001 (product code for hand soap)

[0083] (Display of numeric display area HR1 on screen GM6) On screen GM6 (i.e., when "GMNo6" is stored as progress status information), the weighing device 20 displays the tare weight value "22 (g)" in display area HR1a, the product weight value "604 (g)" in display area HR1b, and "0" in each of display areas HR1c and HR1d, as shown in Fig. 5. Note that on screen GM6, the weighing device 20 may also display the price per weight "80 (yen / 100g)" in display area HR1c and "483 (yen)" in display area HR1d, as in screen GM5.

[0084] (When transitioning from screen GM1 to screen GM2) When the screen GM1 transitions to the screen GM2 (when the weighing value "22(g)" is obtained while the screen GM1 is displayed), the weighing device 20 updates the following information as follows: Current weighing value of Figure 4(A): Updated from 0(g) to 22(g) Tare weight value in Figure 4(B): Updated from 0(g) to 22(g) Progress status information in Figure 4(E): GMNo1 updated to GMNo2

[0085] (When transitioning from screen GM2 to screen GM3) When the screen GM2 transitions from screen GM2 to screen GM3 (when an empty container placed on the platform 25a is removed while screen GM2 is displayed), the weighing device 20 updates the following information as follows: That is, the tare weight value "22 (g)" stored while screen GM2 was displayed is maintained even after the container (empty container) is removed and the screen transitions to screen GM3. Current weighing value of Figure 4(A): 22(g) → updated to 0(g) Progress status information in Figure 4(E): GMNo2 → GMNo3

[0086] (When transitioning from screen GM3 to screen GM2) When the screen GM3 transitions to the screen GM2 (when an empty container is placed on the platform 25a while the screen GM3 is being displayed), the weighing device 20 updates the following information as follows. Current weighing value of Figure 4(A): Updated from 0(g) to 22(g) Progress status information in Figure 4(E): GMNo3 → GMNo2

[0087] (When transitioning from screen GM3 to screen GM4) When the screen GM3 changes to screen GM4 (when a container containing a product is placed on the platform 25a while screen GM3 is displayed), the weighing device 20 updates the following information as follows: Note that "604(g)" is the value obtained by subtracting the tare weight value "22(g)" from the current weight value "626(g)." Current weighing value of Figure 4(A): Updated from 0(g) to 626(g) Product weight in Figure 4(C): Updated from 0(g) to 604(g) The maximum weight of the product in Figure 4(D): updated from 0(g) to 604(g) Progress status information in Figure 4(E): GMNo3 → GMNo4

[0088] (When transitioning from screen GM4 to screen GM3) When the screen GM4 transitions from screen GM4 to screen GM3 (when a container containing a product placed on the platform 25a is removed while screen GM4 is displayed), the weighing device 20 updates the following information as follows: That is, the tare weight value "22 (g)" stored while screen GM4 was displayed is maintained even when the container (container containing the product) is removed and the screen transitions to screen GM3. Also, the maximum product weight value "604 (g)" stored while screen GM4 was displayed is maintained even when the container (container containing the product) is removed and the screen transitions to screen GM3. Current weight value of Figure 4(A): 626(g) → updated to 0(g) Product weight in Figure 4(C): Updated from 604(g) to 0(g) Progress status information of Figure 4(E): GMNo4 → GMNo3

[0089] (When transitioning from screen GM4 to screen GM5) When the screen GM4 transitions to the screen GM5 (when hand soap is selected while the screen GM4 is displayed), the weighing device 20 updates the following information as follows: Progress status information of Figure 4(E): GMNo4 → GMNo5 Product selection information in Figure 4(F): "-" → "S001"

[0090] (When transitioning from screen GM5 to screen GM4) When the screen GM5 transitions to the screen GM4 (when the back button BT44 is operated while the screen GM5 is displayed), the weighing device 20 updates the following information as follows. Progress status information in Figure 4(E): GMNo5 → GMNo4 Product selection information in Figure 4(F): "S001" → "-"

[0091] (When transitioning from screen GM5 to screen GM3) When the screen transitions from GM5 to GM3 (when a container containing a product placed on the platform 25a is removed while screen GM5 is displayed), the weighing device 20 updates the following information as follows: That is, the tare weight value "22 (g)" stored while screen GM5 was displayed is maintained even when the container (container containing a product) is removed and the screen transitions to screen GM3. Also, the maximum product weight value "604 (g)" stored while screen GM5 was displayed is maintained even when the container (container containing a product) is removed and the screen transitions to screen GM3. Current weight value of Figure 4(A): 626(g) → updated to 0(g) Product weight in Figure 4(C): Updated from 604(g) to 0(g) Progress status information in Figure 4(E): GMNo5 → GMNo3 Product selection information in Figure 4(F): "S001" → "-"

[0092] (When transitioning from screen GM5 to screen GM6) When the screen GM5 transitions to the screen GM6 (when the print button BT43 is operated while the screen GM5 is displayed), the weighing device 20 updates the following information as follows: Progress status information in Figure 4(E): GMNo5 → GMNo6

[0093] (When transitioning from screen GM6 to screen GM1) When the screen GM6 transitions to the screen GM1 (when a container containing a product placed on the platform 25a is removed), the weighing device 20 updates the following information as follows: In other words, the information stored while the screen GM6 was displayed, including the tare weight value "22 (g)" and the maximum product weight value "604 (g)", is erased. Current weight value of Figure 4(A): 626(g) → updated to 0(g) Tare weight value in Figure 4(B): Updated from 22(g) to 0(g) Product weight in Figure 4(C): Updated from 604(g) to 0(g) The maximum weight of the product in Figure 4(D): 604(g) → updated to 0(g) Progress status information in Figure 4(E): Updated from "GMNo6" to "GMNo1" Product selection information in Figure 4(F): "S001" → "-"

[0094] (Display of the Cancel (Call Staff) button BT42 on screen GM3) As explained above, when the weighing device 20 displays screen GM3 after a container containing a product for the transaction is temporarily placed on the platform 25a (after displaying screen GM4), it displays screen GM3 (not shown) with a Cancel (Call a Store Attendant) button BT42 instead of the Cancel (Self) button BT41. On the other hand, as mentioned above, once a container containing a product is placed on the platform 25a, the maximum product weight value will not become zero until the transaction is completed (until screen GM6 changes to screen GM1). Therefore, for example, when displaying screen GM3 (when "GMNo3" is stored as progress status information), the weighing device 20 may refer to the maximum product weight value and determine whether to display screen GM3 with a Cancel (Self) button BT41 or screen GM3 with a Cancel (Call a Store Attendant) button BT42. That is, if the maximum product weight is "0 (g)", the weighing device 20 may display the screen GM3 with a Cancel (self) button BT41, and if the maximum product weight is not "0 (g)", the weighing device 20 may display the screen GM3 with a Cancel (call a store clerk) button BT42. The same applies to the display of the Cancel (call a store clerk) button BT42 on the screen GM2.

[0095] Instead of referencing the maximum product weight value, the weighing device 20 may use a flag indicating that screen GM4 has been displayed (for example, a flag that is initially set to "0" and set to "1" when screen GM4 is displayed and is initialized when the transaction is completed) to determine whether to display screen GM3 with a Cancel (self-service) button BT41 or screen GM3 with a Cancel (call a store clerk) button BT42. The same applies to the display of the Cancel (call a store clerk) button BT42 on screen GM2.

[0096] (If the number of items in the container increases) For example, if a customer adds an item to a container after transitioning from screen GM4 (or screen GM5) to screen GM3 and places the container after the item has been added on the platform 25a, the weighing device 20 will update the following information as follows when the screen transitions from GM3 to GM4 due to the placement: The weight of the container after the item has been added is assumed to be 726g (i.e., the weight of the item placed in the container has increased by 100g to 704g). Current weight value of Figure 4(A): Updated from 0(g) to 726(g) Product weight in Figure 4(C): Updated from 0(g) to 704(g) The maximum weight of the product in Figure 4(D): updated from 604(g) to 704(g) Progress status information in Figure 4(E): GMNo3 → GMNo4 That is, if the number of products in the container increases, the maximum product weight value is updated to the increased value.

[0097] (When the product in the container decreases) For example, if a customer removes some of the product from a container and places the removed container on the platform 25a after the screen transitions from screen GM4 (or screen GM5) to screen GM3, the weighing device 20 will recognize that the product weight is less than the maximum product weight when the screen transitions from screen GM3 to screen GM4. For example, if the weight of the container after removing some of the product is 526g (i.e., the weight of the product placed in the container has decreased by 100g to 504g), the weighing device 20 will recognize that the product weight "504(g)" is less than the maximum product weight "604(g)." In this case, the weighing device 20 may call a store clerk and display a screen (not shown) indicating that the store clerk is being called.

[0098] (When the product in the container is gone) For example, if a customer removes all of the products from a container and places the empty container on platform 25a after screen GM4 (or screen GM5) has been displayed, weighing device 20 will recognize that a value other than zero has been stored as the maximum product weight when screen GM3 transitions from screen GM2 due to the container being removed. If no product has ever been placed in the container, the maximum product weight is zero, but if product has been placed in the container at least once, the maximum product weight is not zero. Therefore, weighing device 20 may call a store clerk and display a screen (not shown) indicating that a store clerk is being called.

[0099] (When the current weight is less than the tare weight) If a customer places a different container (lighter than the weighed container) on platform 25a after weighing an empty container and removing it from platform 25a (while screen GM3 is displayed after transitioning from screen GM2 to screen GM3), weighing device 20 will recognize that the current weight is less than the tare weight. For example, if the initially weighed container weighed 22 g and the other container weighed 10 g, weighing device 20 will recognize that the current weight of 10 g is less than the tare weight of 22 g. In this case, weighing device 20 may call a store clerk and display a screen (not shown) indicating that the store clerk is being called. Furthermore, even if the weight of another container containing a product is less than the tare weight value (for example, if 10 g of product is placed in another 10 g container), the weighing device 20 will recognize that the current weight value of "20 (g)" is less than the tare weight value of "22 (g)", and in this case too, it may call a store clerk and display a screen (not shown) indicating that a store clerk is being called.

[0100] The embodiments have been described above, and according to the embodiments, metered sales are improved.

[0101] Although the embodiments have been described above, the above embodiments are merely examples, and the specific configurations are not limited to the above embodiments, and designs within the scope of the gist of the invention are also included. For example, the following (1) to (10) may be used. Furthermore, the following (1) to (10) may be combined as appropriate.

[0102] (1) In the above embodiment, the basic screen transition is described as screen GM1 → screen GM2 → screen GM3 → screen GM4 → screen GM5 → screen GM6 (→ screen GM1), but some screens may be common screens.

[0103] (Transition a by screen GMa) For example, a common screen (referred to as screen GMa) that combines the contents of screens GM3 and GM4 may be prepared, and a transition (referred to as transition a) may occur as follows: screen GM1 → screen GM2 → screen GMa → screen GM5 → screen GM6 (→ screen GM1). Screen GMa in transition a may be, for example, the following screen. The numeric display area HR1 of screen GMa displays the same content as that of the numeric display area HR1 of screen GM3. The message on screen GMa is a message that includes (or excerpts from) the content of each message (messages MS13, MS14) on screens GM3 and GM4. The image on screen GMa is an image that includes (or excerpts from) the content of image GA33 on screen GM3. Screen GMa has a product button display area HR2 similar to that on screen GM4. A cancel (self) button BT41 is arranged on screen GMa (if screen GMa is displayed after a container containing products for the transaction has been temporarily placed on platform 25a, a cancel (call a store clerk) button BT42 is arranged). In transition a, the tare weight, which is the weight of the empty container, is measured, and then when the empty container is taken (when the measured value becomes zero (or approximately zero)), a screen (screen GMa) is displayed where a product can be selected.

[0104] (Transition b by screen GMb) Also, a common screen (referred to as screen GMb) that combines the contents of screens GM2 to GM4 may be prepared, and a transition (referred to as transition b) may be made as follows: screen GM1 → screen GMb → screen GM5 → screen GM6 (→ screen GM1). Screen GMb in transition b may be, for example, the following screen. The numeric display area HR1 of screen GMb displays the same content as that of the numeric display area HR1 of screen GM2. The message of screen GMb is a message that includes (or excerpts from) the content of each message (messages MS12 to MS14) of screens GM2 to GM4. The image of screen GMb is an image that includes (or excerpts from) the content of each image (images GA32, GA33) of screen GM2 and screen GM3. Screen GMb has a product button display area HR2 similar to that of screen GM4. A Cancel (self) button BT41 is provided on screen GMb (if screen GMb is to be displayed after the container containing the product for the transaction has been temporarily placed on platform 25a, a Cancel (call store clerk) button BT42 is provided). In transition b, when the tare weight, which is the weight of the empty container, is measured, a screen (screen GMb) is immediately displayed that allows the product to be selected.

[0105] (2) In the above embodiment, when a weight exceeding the weighed value of the container is detected on screen GM3, the screen transitions to screen GM4. However, the screen may transition to screen GM4 when the exceeding weight is equal to or greater than a predetermined weight (i.e., the screen may not transition to screen GM4 when the exceeding weight is less than the predetermined weight). In other words, a minimum purchase amount of a product may be set as a predetermined weight. Note that when the weight is less than the predetermined weight, a message may be displayed indicating that the minimum purchase amount is not met or that more than the minimum purchase amount of the product needs to be added.

[0106] (3) In the above embodiment, an example was described in which if a product is added after product selection, it is necessary to specify the product again. However, if a product is added after product selection, it is not necessary (or may be omitted) to specify the product again. In other words, instead of screen GM4 → screen GM5 → screen GM3 → screen GM4 → screen GM5, the transition may be screen GM4 → screen GM5 → screen GM3 → screen GM5. If it is within a certain time after the transition from screen GM5 → screen GM3, the transition may be screen GM4 → screen GM5 → screen GM3 → screen GM5.

[0107] (4) In the above embodiment, after weighing the container (displaying screen GM2), an example was described in which the screen returned to the initial screen (screen GM1) when processing was completed or stopped, but it may also be configured to return to the initial screen if left for a predetermined time. As an example, if screen GM3 is displayed for a predetermined time or more, screen GM may be transitioned to screen GM1 (a countdown may be displayed on screen GM3 until the transition to screen GM1).

[0108] (5) In the above embodiment, an example was described in which an empty container is placed on platform 25a (its tare weight is measured), the empty container is removed from platform 25a, a product is placed inside, and the container containing the product is placed back on platform 25a. However, instead of or in addition to the above procedure, an empty container may be placed on platform 25a (its tare weight is measured), and a product may be placed inside the empty container while it is still on platform 25a (for example, the product may be placed inside using the scoop of display container 200). In this case, instead of or in addition to a message (message MS11) instructing the user to remove the empty container and fill it with product or an image (image GA31) instructing the user to remove the empty container, a message instructing the user to place a product inside the empty container or an image instructing the user to place a product inside the empty container may be displayed on screen GM2. Note that if a product is placed inside the empty container, the screen transitions from screen GM2 to screen GM4.

[0109] (6) In the above embodiment, an example was described in which weighing device 20 recognizes, through weighing, that a container different from the weighed container has been placed on platform 25a, but the method of recognizing that a different container has been placed on platform 25a is not limited to this. For example, weighing device 20 may be provided with an imaging unit that captures an image of an object placed on platform 25a and recognize that a different container has been placed on platform 25a.

[0110] (7) In the above embodiment, an example was described in which the weighing device 20 does not recognize the purchased product at all before the customer performs an operation on the screen (selection of a product on screen GM4). However, the weighing device 20 may also recognize the purchased product (more precisely, the product whose display container was operated) before the customer performs an operation on the screen. For example, a display container 200 (operation unit 202) may be provided with a sensor 203 (e.g., a sensor including a tilt sensor, a memory unit (a memory unit that stores the product codes of the products contained in the display container 200), and a communication unit). When a customer operates the operation unit 202 of the display container 200, the sensor 203 may transmit detection information including the product code stored in the memory unit to the weighing device 20. When the weighing device 20 receives the detection information from the sensor 203, it may recognize the product whose product code is included in the detection information as the product whose display container 200 was operated. The weighing device 20 may display only the product button for the product whose display container 200 was operated on screen GM4 (product button display area HR2). If it is possible to refer to a file showing the correspondence between display container 200 and the products stored in that display container 200 (if the file is stored in the device itself or an accessible external device), sensor 203 may transmit detection information including information that allows for identifying display container 200. If it is possible to refer to a file showing the correspondence between sensor 203 and the products stored in display container 200 in which sensor 203 is installed (if the file is stored in the device itself or an accessible external device), sensor 203 may transmit detection information that includes information that allows for identifying sensor 203. Similar sensors may be installed in each of display containers 100, 300, 310, and weighing device 20 may display only the product buttons for the products that have operated display containers 100, 300, 310 on screen GM4.

[0111] (8) Related to (7) above, in the display area, a code image (barcode or two-dimensional code) encoding the product code of each product is presented, and the customer captures the code image of the product they wish to purchase using a mobile device (e.g., the customer's own smartphone or a smartphone provided by the store). The mobile device then communicates (e.g., via Bluetooth) with the weighing device 20, allowing the weighing device 20 to recognize the product the customer is purchasing and display only the product button for that product on screen GM4. The mobile device may display a two-dimensional code encoding information necessary for communication (pairing) (e.g., device identification information, passkey, etc.), and the weighing device 20 may be equipped with a scanner unit that optically reads the two-dimensional code, etc., and the scanner unit may read the two-dimensional code displayed by the mobile device to initiate communication between the mobile device and the weighing device 20.

[0112] (9) In the above embodiment, an example was described in which the weighing device 20 weighed an empty container and obtained the weight (tare weight) of the empty container, but the method by which the weighing device 20 obtains the tare weight is not limited to this.

[0113] For example, the tare weight may be obtained based on the customer's operation on the screen. For example, when using containers of known weights prepared by the store (containers provided free of charge or for a fee; hereinafter, "store containers") and there are multiple store containers of different weights (e.g., 30g store container A, 50g store container B, and 100g store container C), store container buttons corresponding to each store container (e.g., store container button for store container A, store container button for store container B, and store container button for store container C) may be displayed and the customer may select one. The weighing device 20 stores the tare weight of each store container in association with each store container button, and stores (registers) the tare weight corresponding to the store container button operated by the customer as the tare weight value (FIG. 4(B)). (Transition c by screen GMc) For example, a screen (screen GMc) may be prepared on which each store container button is arranged, and the transition (referred to as transition c) may be as follows: screen GMc → screen GM3 → screen GM4 → screen GM5 → screen GM6 (→ screen GMc). Instead of transition c, each store container button may be arranged on screen GM1 (for example, when store containers and containers that are not store containers (i.e., containers that require weighing) are used together), and the transition may be as follows: screen GM1 → (screen GM2) → screen GM3 → screen GM4 → screen GM5 → screen GM6 (→ screen GM1). The same applies when there is only one type of store container weight (when there is only one type of store container, or when multiple store containers all have the same weight). However, when there is only one type of store container weight, the customer does not need to select a store container, so the store container button may have another name (for example, a transaction start button). In other words, a single transaction start button may be placed on screen GMc or screen GM1 instead of multiple store container buttons, and when the transaction start button is operated, the tare weight of the store container may be stored (registered) as the tare measurement value (Figure 4(B)), and the screen may transition in the same manner.

[0114] Alternatively, for example, an IC tag storing the weight of a container may be attached to the container, and weighing device 20 may include a wireless tag reader / writer that reads the information stored in the IC tag attached to the container placed on platform 25a to obtain the weight of the container (tare weight). Alternatively, a barcode (or two-dimensional code) encoding the weight of the container may be attached to the container, and weighing device 20 may include a scanner that reads the barcode (or two-dimensional code) attached to the container placed on platform 25a to obtain the weight of the container (tare weight). Weighing device 20 stores (registers) the tare weight obtained as described above as a tare weight value (FIG. 4(B)). (Screen GMd transition d) For example, a screen (screen GMd) that provides guidance on reading an IC tag or the like may be prepared, and a transition (referred to as transition d) may be made as follows: screen GMd → screen GM3 → screen GM4 → screen GM5 → screen GM6 (→ screen GMd). Instead of transition d, guidance on reading an IC tag or the like may be made on screen GM1 (for example, when using a container with an IC tag or the like attached and a container without an IC tag or the like (i.e., a container that requires weighing) together), and a transition may be made as follows: screen GM1 → (screen GM2) → screen GM3 → screen GM4 → screen GM5 → screen GM6 (→ screen GM1).

[0115] (10) In the above embodiment, an example was described in which the weighing device 20 stores files (such as the product file shown in FIG. 3) and data (such as the various values ​​shown in FIG. 4), but this information may also be stored externally in an accessible location (for example, on a cloud server).

[0116] The embodiments will be summarized below. [Technical field] The present invention relates to a product sales data processing device, a product sales method, and a program. [Background technology] For example, a system for selling products by weighing them is known (see, for example, Patent Document 1). [Prior art document] [Patent documents] [Patent Document 1] JP 2013-108817 A [Summary of the Invention] [Problem to be solved by the invention] However, there is room for improvement in metered sales. The present invention has been made in view of such circumstances, and an object of the present invention is to provide a technology for improving metered sales. [Means for solving the problem] (1) In order to solve the above-mentioned problems, one aspect of the present invention is a product sales data processing device (e.g., weighing device 20) that weighs and registers products (e.g., stores the weight as a tare weight value) through operation by a customer, and is equipped with a weighing means (e.g., weighing unit 25) that weighs the weight, and a display means (e.g., display unit 26) that displays an operable screen, wherein the display means displays a screen (e.g., screen GM4, screen GMa, screen GMb) on which products can be selected after the tare weight, which is the weight of the container, is registered (e.g., after weighing the container by the weighing means, after selecting the container (store container), after reading an IC tag, etc.) (e.g., screen GM4 is displayed after screen GM1, such as screen GM1 → screen GM2 → screen GM3 → screen GM4; screen GMa is displayed after screen GM1, such as screen GM1 → screen GM2 → screen GMa; screen GMb is displayed immediately after screen GM1, such as screen GM1 → screen GMb). According to (1) above, sales by weight can be improved. For example, customers can select products after properly recognizing the tare weight.

[0117] (2) The display means is a product sales data processing device described in (1), characterized in that after the weighing value measured by the weighing means changes after the tare weight is registered (for example, decreases if the container is removed and the product is placed inside, or increases if the product is placed inside while the container is still on), it displays a screen (for example, screen GM4, screen GMa) on which the product can be selected (for example, screen GM1 → screen GM2 → screen GM3 → screen GM4, so that screen GM4 is displayed after screen GM2, and screen GM1 → screen GM2 → screen GMa, so that screen GMa is displayed immediately after screen GM2). According to (2) above, sales by weight can be improved. For example, after the tare weight is recognized, the customer can select a product by taking action to put the product in (taking the container down temporarily) or by taking action to put the product in (putting the product in the container while it is still on the counter).

[0118] (3) The product sales data processing device described in (1) or (2) is characterized in that the display means displays a screen (e.g., screen GM4) that allows a product to be selected based on the weighing means measuring a weight greater than the tare weight after the tare weight is registered (e.g., displaying screen GM4 immediately after screen GM3, such as screen GM1 → screen GM2 → screen GM3 → screen GM4). According to (3) above, the weigh-in sales can be improved. For example, when a container containing a product is placed on the counter, the customer can select the product.

[0119] (4) A product sales data processing device as described in any of (1) to (3), characterized in that it is provided with an issuing means (e.g., printing unit 28) that issues a medium on which at least the sales price of the product is printed, and the display means displays the registered tare weight (e.g., screen GM2), and erases the tare weight (e.g., screen GM6 → screen GM1) when the issuing means has completed issuing the medium and the product has been removed from the weighing means (e.g., when the weighing value is zero (or approximately zero)). According to (4) above, the volume sales can be improved. For example, if a product is left behind, the start of the next process can be appropriately restricted. This also helps prevent products from being left behind.

[0120] (5) In order to solve the above-mentioned problems, another aspect of the present invention is a merchandise sales method in a merchandise sales data processing device that weighs and registers merchandise through operation by a customer, the merchandise sales method including a weighing step for weighing the weight and a display step for displaying an operable screen, wherein the display step displays a screen on which a merchandise can be selected after the tare weight, which is the weight of the container, is registered. According to (5) above, volumetric sales will be improved.

[0121] (6) In order to solve the above-mentioned problems, another aspect of the present invention is a program that causes a computer to function as a product sales data processing device that weighs and registers products through operation by a customer, and causes the computer to function as a weighing means that measures weight and a display means that displays an operable screen, and the display means is characterized in that it displays a screen that allows products to be selected after the tare weight, which is the weight of the container, is registered. According to (6) above, metered sales will be improved.

[0122] The program for implementing the above-described weighing device 20 may be recorded on a computer-readable recording medium and loaded into a computer system for execution. The term "computer system" as used herein includes hardware such as an OS and peripheral devices. The term "computer-readable recording medium" also refers to portable media such as flexible disks, optical magnetic disks, ROMs, and CD-ROMs, as well as storage devices such as hard disks built into a computer system. The term "computer-readable recording medium" also includes devices that retain the program for a certain period of time, such as volatile memory (RAM) within a computer system that acts as a server or client when the program is transmitted via a network such as the Internet or a communication line such as a telephone line. The program may also be transmitted from a computer system storing the program in a storage medium to another computer system via a transmission medium or by transmission waves within the transmission medium. The term "transmission medium" used to transmit the program refers to a medium capable of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line. The program may also be used to implement some of the functions described above. Furthermore, the above-mentioned functions may be realized in combination with a program already recorded in the computer system, that is, a so-called differential file (differential program). [Explanation of symbols]

[0123] 20 ...measuring device, 21 ...CPU, 22 ...ROM, 23 ...RAM, 25 ...measuring unit, 26 ...display unit, 27 ...sound output unit, 28 ...printing unit, 29 ...communication unit

Claims

1. A product sales data processing device that weighs and registers products according to customer operation, a weighing means for measuring the weight of an object placed on the platform; A display means for displaying an operable screen; Equipped with The display means After the tare weight, which is the weight of the container, is registered, a container containing a product is placed on the platform, and if the weight measured by the weighing means is greater than the tare weight, a product selection screen is displayed on which the product can be selected; If a container containing a product is removed from the platform while the product selection screen is being displayed, the screen is switched to a guidance screen that guides the user to place the container containing the product on the platform. A product sales data processing device characterized by:

2. The display means After the tare weight is registered, if a container containing a product is placed on the platform and the weight measured by the weighing means is smaller than the tare weight, a notification screen is displayed to notify the user of an abnormality.

2. The product sales data processing device according to claim 1.

3. A merchandise sales method in a merchandise sales data processing device that weighs and registers merchandise by customer operation, comprising: a weighing step of weighing an object placed on the platform; Display steps that display operable screens and Including, The display step includes: After the tare weight, which is the weight of the container, is registered, the container containing the product is placed on the platform, and if the weight measured in the weighing step is a value greater than the tare weight, a product selection screen is displayed on which the product can be selected; If a container containing a product is removed from the platform while the product selection screen is being displayed, the screen is switched to a guidance screen that guides the user to place the container containing the product on the platform. A merchandise sales method characterized by:

4. A program that causes a computer to function as a product sales data processing device that weighs and registers products according to customer operations, The computer a weighing means for measuring the weight of an object placed on the platform; Display means for displaying operable screens It functions as The display means After the tare weight, which is the weight of the container, is registered, a container containing a product is placed on the platform, and if the weight measured by the weighing means is greater than the tare weight, a product selection screen is displayed on which the product can be selected; If a container containing a product is removed from the platform while the product selection screen is being displayed, the screen is switched to a guidance screen that guides the user to place the container containing the product on the platform. A program characterized by:

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