JPH10320640A - Method and system for adjusting charge of stacked article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and securely perform settling operation for charge. SOLUTION: When SUSHI (vinegared fish and rice) are mounted on dishes of different kind depending upon the colors of their flanks and sold, emptied dishes are stack, the color of the flanks of the stacked dishes is discriminated by a discriminating means 1; and a decision means 2 decides the kind of the stacked dishes by comparing the color of the dishes discriminated by the discriminating means with information on the relation between colors and kinds of dishes stored in a dish feature storage means 4. On the basis of the decision result of the decision means, an arithmetic means 5 calculates the numbers of dishes by the kinds and a charge calculating means 6 finds the total amounts of money by the dish kinds from the numbers of dishes by the dish kinds calculated by the arithmetic means and vending unit prices by the dish kinds stored in a dish value storage means 7 and further calculates the total amount of money of all the stacked dishes. Then the total amount of money is displayed at a display means 8 to settle the charge for the customer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stacked product in which, for example, in a state where articles such as dishes are stacked, the type of the article is determined from the characteristics of the articles, and the total amount of all the stacked articles is determined to perform a charge settlement. The present invention relates to a method and an account settlement system for articles.

[0002]

2. Description of the Related Art For example, in a conveyor belt sushi restaurant, sushi is placed on a plate and rotated along a table, and a customer takes a plate of sushi that passes in front of him as desired and eats it. The system is like stacking dishes on a table. The price of the sushi is divided by the type of plate, such as the color and pattern of the plate, and at the time of payment, the clerk counts the number of plates for each type of plate and enters it into the cash register by keying in. Is displayed, and the customer has to pay the fee.

[0003]

However, in a system in which the clerk counts the number of empty dishes of each type at the time of settlement and inputs the number to the cash register to obtain the total price, the clerk's work is troublesome. In addition, there is a problem that a settlement error due to counting error occurs.

[0004] In view of the above, the present invention according to claim 1 is to automatically determine the type of articles such as stacked dishes and calculate and display the total price, thereby making it possible to easily and surely settle the charges. Provide a payment method.

[0005] Further, the invention according to claims 2 to 7 is characterized in that the type of articles such as stacked dishes is automatically determined and the total amount is calculated and displayed, thereby making it possible to easily and surely settle the fee. To provide a fee settlement system for goods.

[0006]

According to the first aspect of the present invention,
Items such as tableware with different edge or side characteristics for each type are stacked, the edge or side characteristics of each of the stacked items are identified, and the quantity for each type of the item is calculated from the identification information,
The sales price for each type of article is determined from the sales price for each type of article and the quantity calculated for each type of article that have been set in advance, and the total price of all stacked articles is determined and displayed. The present invention relates to a method for adjusting the charge of stacked articles in which the charge is adjusted based on the total amount.

The invention according to claim 2 is characterized by stacking articles such as tableware having different edge or side characteristics for each type, identifying means for identifying the edge or side characteristic of each of the stacked articles, and identifying each type of article. Comparing the feature of the article identified by the identification means with the feature for each type of article stored in the feature storage means to determine the type of each of the stacked articles Determining means; calculating means for calculating the quantity for each type of article based on the determination result of the determining means; selling unit price storing means for storing a sales unit price for each type of article; and the type of article calculated by the calculating means A charge calculating means for obtaining a sales price for each type of article from the quantity of each product and a sales price for each type of article stored in the sales unit price storage means, thereby obtaining a total price of all the stacked articles; Fee calculation And display means for displaying the total amount stage is determined, in the article fee settlement system of stacked for settlement rates based on the total amount of displaying the display means.

According to a third aspect of the present invention, in the charge settlement system for stacked articles according to the second aspect, the identification means identifies a color as a feature of an edge or a side face of each of the stacked articles.

According to a fourth aspect of the present invention, in the charge settlement system for stacked articles according to the second aspect, the identification means identifies a size as a feature of an edge or a side face of each of the stacked articles.

According to a fifth aspect of the present invention, in the charge settlement system for stacked articles according to the second aspect, the identification means identifies a shape as a feature of an edge or a side face of each of the stacked articles.

According to a sixth aspect of the present invention, in the charge settlement system for stacked articles according to the second aspect, the identification means includes a pattern or pattern drawn on the edge or the side as a feature of the edge or the side of each of the stacked articles. Is to identify.

[0012] The invention according to claim 7 is an identification means for stacking dishes having different edge or side characteristics for each type as articles, and identifying the edge or side characteristics of each of the stacked dishes.
A feature storage unit that stores the edge or side surface characteristics for each type of dish, a comparison between the features of the dish identified by the identification unit and the features of each type of dish stored in the feature storage unit. Determining means for determining the type; calculating means for calculating the quantity for each type of dish based on the determination result of the determining means; selling unit price storing means for storing a unit sales price for each type of dish; Price calculation for calculating the sales amount for each type of dish from the quantity of each type of dish and the sales unit price for each type of dish stored in the sales unit price storage means, thereby obtaining the total price of all stacked dishes. Means and a display means for displaying the total amount determined by the charge calculating means, and the charge adjusting system for stacked articles for adjusting the charge based on the total amount displayed by the display means.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) This embodiment relates to a case where the present invention is applied to a case where a dish on which sushi is to be placed in a conveyor belt sushi restaurant is used as an article, and the type and number of stacked dishes are determined and the fee is settled. The following describes what has been applied.

As shown in FIG. 1, identification means 1 for identifying the characteristics of dishes from the side colors of stacked dishes of the same size.
And the identification result of the identification means 1 is supplied to the determination means 2. As shown in FIG. 2, the identification means 1 reads the color on the side of the stacked dishes 3 with a CCD line sensor 11, converts the color into an electric signal with a sensor circuit 12, and supplies the electric signal to the determination means 2. In this case, a light source such as an LED array that illuminates the side surface of the plate 3 may be added.

The judging means 2 receives the identification information of the side of the plate from the identification means 1. In this case, the positions of the side surfaces of the stacked dishes 3 as shown in FIG. Is used to determine the color of the side, and the type of plate 3 is determined. That is, the determination means 2 is stacked from the identification information from the identification means 1 based on the color information of the side of the dish stored in advance in the dish feature storage means 4 and the information on the type of the dish corresponding thereto. The type of the dish 3 is determined by comparison.

That is, as shown in FIG. 3, two types of white and black colors are stored in the plate feature storage means 4 as the color of the side surface of the plate 3, and 200 colors corresponding to the white color information are stored. The dish type information of the circular dish is stored, and the dish type information of the 100 circular dish is stored corresponding to the black color information. Therefore, the determination means 2 receives the identification information from the identification means 1 and, if the information of the position a is white, from the information stored in the dish feature storage means 4,
The type of the circular plate is determined, and if the information on the b position is black, 100
The type of the circular plate is determined, and if the information on the c position is white, 200
The type of the circular plate is determined, and if the information on the positions d, e, and f is black, the type of the circular plate is determined.

The disc type information of the stacked dishes 3 determined by the discriminating means 2 is supplied to the calculating means 5, and the calculating means 5 calculates the quantity of each disc type. Therefore, in the above case, the calculating means 5 determines that four 100-yen dishes
Two 200 yen dishes will be calculated.

The calculation result of the calculation means 5 is supplied to the charge calculation means 6. The charge calculating means 6 is a calculating means 5
From the calculation result from the unit price and the sales unit price information for each plate type stored in advance in the plate price storage unit 7 serving as the sales unit price storage unit, the total price of all the dishes 3 stacked is calculated and displayed.
To be displayed. That is, as shown in FIG. 4, the dish value storage means 7 stores dish type information of 200-yen dish and 100-yen dish, and corresponding sales unit information of 200 yen and 100 yen. The charge calculating means 6
From the information of four 100-yen plates and two 200-yen plates from the calculating means 5, (100 yen × 4) + (200 yen × 2) = 800
The calculation of the circle is performed to calculate the total amount of the whole stacked dishes and to display the total amount on the display means 8.

In such a configuration, empty dishes on which sushi eaten by customers are placed in a shop are stacked and read from the side by the CCD line sensor 11 of the identification means 1. CC
The output of the D line sensor 11 is converted into an electric signal by the sensor circuit 12 and supplied to the determination means 2.

The judging means 2 analyzes the electric signal from the discriminating means 1 and performs judgment processing of each of the stacked dishes 3. In this processing, as shown in FIG. 5, the color of the side of the stacked dishes 3 is sequentially detected, and the color information of the side of the dish stored in the dish feature storage means 4 and the corresponding color of the dish are stored for each detection. The type of each of the stacked dishes 3 is determined based on the type information. Then, the determination result is supplied to the calculating means 5. Arithmetic means 5
Calculates the quantity for each dish type based on the determination result from the determination means 2. That is, when the result of the determination is that the side plate 3 is white, the amount of the 200-yen plate is increased by one, and the side plate 3 is black.
In the case of the determination result of, the quantity of the 100-yen plate is increased by one.

All the dishes 3 on which the judgment means 2 are stacked
Is supplied to the calculating means 5, and when the calculating means 5 calculates the quantity of all dishes 3 for each dish type, the result is supplied to the charge calculating means 6. Charge calculation means 6
Is the total number of dishes 3 stacked by performing the calculation of the number of 200-yen dishes × 200 yen + the number of 100-yen dishes × 100 yen from the sales unit price information for each dish type stored in the dish value storage means 7. The amount is calculated and displayed on the display unit 8. Thus, the clerk checks the contents displayed by the display means 8 and requests the customer to pay the fee.

As described above, the shop person stacks the empty dishes 3 when the customer eats sushi (this operation is not necessary if the customers themselves stack the dishes), and the side of the stacked dishes. Is read by the CCD line sensor 11,
Since the customer's payment fee is automatically calculated and displayed on the display means 8, it is easy for the capacity to settle the fee, and the payment can be surely performed without calculation errors.

In the above-described first embodiment, the case where the dishes of the same size are stacked and read from the side by the CCD line sensor to determine the type of the dish from the color of the side of the dish has been described. Not something. Hereinafter, other embodiments will be described.

(Second Embodiment) In this embodiment, the types of dishes are made different depending on the size of the dishes. For example, a large size dish 31 and a small size dish 32 are provided according to two kinds of dishes. Are prepared, and when they are overlapped as shown in FIG. 6, identification is performed using two sets of photosensor groups 13 and 14. That is, one photosensor group 13 is a sensor for detecting the presence or absence of the stacked dishes 31, 32, and the other photosensor group 14 is a sensor for detecting only the large-sized dishes 31. In this case, dish type information may be stored in the dish feature storage means corresponding to the size.

In such a configuration, the presence or absence of the stacked dishes 31 and 32 is detected by one of the photosensor groups 13, so that the number of stacked dishes can be detected by the photosensor group 13. In addition, the other photosensor group 14 is located at a position for detecting the edge of the large-sized plate 31, so that the edge of the small-sized plate 32 cannot be detected. Therefore, it is possible to easily determine how many large-sized dishes 31 and how many small-sized dishes 32 are stacked based on the detection outputs of the photosensor groups 13 and 14. In this way, it is possible to cope with a case where the type of dish is changed depending on the size of the dish.

(Third Embodiment) In the third embodiment, the type of dish is changed depending on the shape of the edge of the dish.
A plate 33 with a thick edge and a plate 34 with a thin edge according to two types of dishes.
Is prepared, and when these are overlapped as shown in FIG.
The shapes of the edges of the stacked plates 33 and 34 are read by the D-line sensor 11, and the read shapes are compared and determined by a known method such as pattern matching to detect the type of the plate. In this case, dish type information may be stored in the dish feature storage means corresponding to the shape. In this way, it is possible to cope with a case where the type of the dish is changed depending on the shape of the edge of the dish.

(Fourth Embodiment) This is one in which the type of dish is made different depending on the difference in the image pattern drawn on the side surface of the dish. For example, one thick line is drawn in accordance with two types of dish. In the case where the drawn plate 35 and the plate 36 on which two thin lines are drawn are prepared, and they are overlapped as shown in FIG. 8, the images drawn on the side surfaces of the plates 35 and 36 stacked by the CCD line sensor 11. The pattern is read, and the read image pattern is compared and determined by a well-known image recognition technique to detect a dish type. In this case, dish type information may be stored in the dish feature storage means corresponding to the image pattern. In this way, it is possible to cope with a case where the type of the dish is changed due to the difference in the image pattern drawn on the side surface of the dish. In addition,
The image pattern may be not only a line but also a pattern or the like.

(Fifth Embodiment) In the first embodiment, the color of the side of the plate 3 of the same size is
The case where the plate type is determined by reading in step 1 has been described,
As shown in FIG. 9, the entire side surface of the stacked dishes 3 may be captured as an image using the two-dimensional CCD camera 15, and the type of dish may be determined by a known image recognition technique. In addition,
As shown in FIG. 10, the whole of the stacked dishes 3 may be imaged obliquely from above using a two-dimensional CCD camera 15, and the color of the upper surface of the edge of each dish 3 may be captured. Here, the relationship between the side surface of the dish and the upper surface of the edge will be described with reference to FIG.
11 (a) shows the side surface 3a of the plate 3, and FIG. 11 (b) shows the upper surface 3b of the edge of the plate 3.

(Sixth Embodiment) The sixth embodiment differs from the first embodiment in that the type of dish is varied depending on the color of the upper surface of the edge of the plate. The upper surface of the edge of each plate 3 stacked as shown in FIG. Each of the sensors 16, 16,... Is disposed, and the type of the dish is determined by detecting, for example, the color of the upper surface of the edge of the individual dish 3 using the sensors 16. In this way, the color etc. of the upper surface of the edge of the plate
Detection can also be performed by using a plurality of sensors 16 instead of the D camera 15.

(Seventh Embodiment) In this embodiment, the types of dishes are made different depending on the size of the dishes. For example, a large size dish 31 and a small size dish 32 are provided according to two kinds of dishes. In the case where the sensor groups 17 and 18 are stacked, a pair of sensor groups 17 and 18 are arranged to face each other outside the edges of the stacked dishes 31 and 32 as shown in FIG.
The distance to the edge or side surface of each plate 31, 32 is measured by each of the sensors. Then, the size of the dish is determined based on the difference in the distance. In this case, a pair of sensor groups 17 and 18
Are opposed to each other, so that even if the stacked dishes are slightly displaced to the left and right, the distance is measured from both sides by the sensor.
The distance to the edge or side of the plate can be accurately measured, and the size of the dish can be reliably detected.

In each of the above embodiments, the case where the dishes are stacked substantially vertically has been described.
As shown in FIG. 14A, the individual dishes 3 are stacked so as to be oblique, or as shown in FIG.
May be slightly shifted from each other so that the upper surface of the edge of the plate 3 can be easily detected.

In each of the above-described embodiments, the case where the plates are directly stacked has been described.
As shown in FIG. 5, a guide 41 for storing the trays 3 one by one may be provided, and the edge of the trays 3 may be inserted into the guides 41 to form a state similar to the state in which the trays 3 are stacked. In this manner, the upper and lower guides 41 may be widened so that the plates 3 do not come into contact with each other vertically. Further, as shown in FIG. The structure which stores the plate 3 one by one may be sufficient. In this way, each dish 3 can be made stable.

(Eighth Embodiment) This shows an example of a fare settlement apparatus used in a fare settlement system.
As shown in the figure, a dish storage portion 51 capable of storing a plurality of dishes 3 is formed at a lower portion, and an operation portion 54 provided with various buttons such as a settlement button 52 and a display 53 is provided at an upper portion. An antenna 55 for wireless communication is mounted thereon. Note that, for example, a CCD line sensor (not shown) for detecting the color of the side surface of each plate is disposed on the side surface of the plate storage unit 51. The operation unit 54 contains the above-described identification unit 1, determination unit 2, dish feature storage unit 4, circuit unit corresponding to the calculation unit 5, a wireless communication control circuit, and the like.

In this apparatus, the customers ate sushi and empty the dishes in order, and store them in the dish storage section 51. When all the dishes have been stored, the settlement button 52 is operated. As a result, the CCD line sensor detects the color of the side of the stacked dishes 3, and the determining means 2 determines the color of each dish 3 from the information on the relationship between the dish position and the dish type stored in the dish feature storage means 4. The type of dish is determined, and the calculating means 5 obtains the number of sheets for each type of dish from the information on the type of dish 3. Then, the obtained number of plates for each dish type is displayed on the display 53. In addition, information on the number of sheets obtained for each type of dish is wirelessly transmitted to, for example, a POS (point of sale information management) terminal via an antenna 55 by a wireless communication control circuit,
In the POS terminal, the dish storage unit 51
Calculates the total price of the whole dish stored in the store and displays it on the display to make payment with the customer. By using such a charge settlement device, the store clerk automatically stores the empty plate in the plate storage unit 51 and operates the settlement button 52 only by operating the settlement button 52. Since the total price of the entire dish is calculated by the POS terminal and the payment is made with the customer, the payment work can be performed easily and reliably.

In this embodiment, a case has been described in which the number of sheets for each type of dish is obtained and displayed on the display 53 and transmitted to the POS terminal wirelessly as the fee settlement apparatus. However, the present invention is not necessarily limited to this. In addition, a circuit corresponding to the charge calculation means 6 and the dish value storage means 7 is further provided in the charge settlement device, and the total price of the whole dish stored in the dish storage unit 51 is calculated by this device and displayed on the display 53. Alternatively, the total amount may be wirelessly transmitted to the POS terminal.

(Ninth Embodiment) This shows an example of the entire fee settlement system, and includes various buttons such as a dish storage unit 61 capable of storing a plurality of dishes 3 and a settlement button 62 as shown in FIG. And an operation unit 64 provided with a display 63 and a caster 6 for providing and moving an antenna 65
6 and a POS terminal 68 are arranged. The payment device 67 performs the same operation as the fee payment device of FIG.

In this system, when the customer finishes eating sushi and takes a seat, the customer moves the fee settlement device 67 to the position of the counter 69 where the customer was, and the customer on the counter 69 eats sushi and becomes empty. By storing the new plate 3 in the plate storage unit 61 of the charge settlement device 67 and operating the settlement button 62, the charge settlement device 67 obtains the number of plates for each dish type and displays the same on the display 63 and the POS terminal 68. Information on the number of sheets for each dish type is wirelessly transmitted.

The POS terminal 68 has a memory corresponding to the dish value storage means 7 described above. When the information on the number of dishes for each dish type is received from the fee settlement device 67, the dish type stored in the memory and the sales unit price are obtained. From the information on the relationship, the total amount of each dish type and the total total amount are obtained, the total total amount is displayed on the display 70, the customer is settled, and the total amount of each dish type and the total amount are calculated. Print out and issue a receipt. Therefore, in this embodiment as well, the operation of adjusting the fee can be performed easily and reliably.

(Tenth Embodiment) This shows an example in which the above-described fee settlement apparatus shown in FIG. 18 is arranged on a counter, and as shown in FIG. The device 72 is installed, and for example, the empty dishes 3 after the customer has eaten sushi are sequentially stored in the dish storage unit of the fee settlement device 72. When the customer stands, the store clerk stores the dish 3 in the dish storage unit of the fee settlement device 72. Then, when the clerk operates the payment button of the payment apparatus 72, the payment apparatus 72 obtains the number of sheets for each dish type and wirelessly transmits the information to the POS terminal. In this way, the customer pays at the POS terminal. Therefore, in this embodiment as well, the operation of adjusting the fee can be performed easily and reliably.

In each of the above-described embodiments, the case where sushi is eaten and empty dishes are stacked and settled is described. In this case, a beer bottle or a beer can can be placed on a dish of a corresponding price, and the price can be settled by determining the type of the dish. In addition, although each embodiment mentioned above described what applied this invention to the charge settlement of the plate which carried the sushi in the conveyor belt sushi restaurant, it is not necessarily limited to this, and the stackable articles other than the plate Is also applicable.

[0041]

As described above, according to the first aspect of the present invention, the type of articles such as stacked dishes is automatically determined, and the total amount is calculated and displayed. It can provide a method for paying bills for the stacked articles that can be made. According to the inventions of claims 2 to 7, the type of articles such as stacked dishes is automatically determined, and the total amount is calculated and displayed. An article fee settlement system can be provided.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of an identification unit in the embodiment.

FIG. 3 is a diagram showing a configuration of a dish feature storage unit in the embodiment.

FIG. 4 is a diagram showing a configuration of a dish value storage unit in the embodiment.

FIG. 5 is a flowchart for explaining the operation in the embodiment.

FIG. 6 is a diagram illustrating a configuration of a dish type identification unit according to the second embodiment of the present invention.

FIG. 7 is a diagram illustrating a configuration of a dish type identification unit according to a third embodiment of the present invention.

FIG. 8 is a diagram illustrating a configuration of a dish type identification unit according to a fourth embodiment of the present invention.

FIG. 9 is a diagram illustrating a configuration of a dish type identification unit according to a fifth embodiment of the present invention.

FIG. 10 is a diagram showing a modification of the configuration of the dish type identification unit in the embodiment.

FIG. 11 is a view for explaining the relationship between the side surface and the upper surface of the edge of the dish.

FIG. 12 is a diagram illustrating a configuration of a dish type identification unit according to a sixth embodiment of the present invention.

FIG. 13 is a diagram illustrating a configuration of a dish type identification unit according to a seventh embodiment of the present invention.

FIG. 14 is a diagram showing a modification in the case of stacking dishes.

FIG. 15 is a diagram showing another modified example in a case where the plates are stacked.

FIG. 16 is a diagram showing another modified example in a case where the plates are stacked.

FIG. 17 is a diagram showing another modified example in the case where the plates are stacked.

FIG. 18 is a perspective view showing a configuration of a fee settlement device used in a fee settlement system according to an eighth embodiment of the present invention.

FIG. 19 is a perspective view showing the configuration of a fare settlement system according to a ninth embodiment of the present invention.

FIG. 20 is a perspective view showing the configuration of a fee settlement system according to a tenth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Identification means 2 ... Judgment means 3 ... Dish 4 ... Dish feature storage means 5 ... Calculation means 6 ... Charge calculation means 7 ... Dish value storage means 8 ... Display means

Claims (7)

[Claims] 1. An article such as tableware having a different edge or side characteristic for each type is stacked, the edge or side characteristic of each of the stacked articles is identified, and a quantity for each type of the article is calculated from the identification information. The sales price for each type of article is determined from the sales price for each type of article and the quantity calculated for each type of article that have been set in advance, and the total price of all the stacked articles is calculated and displayed. A method for paying a charge of stacked articles, wherein the charge is settled based on the total amount of the charges. 2. Articles such as tableware having different edge or side characteristics for each type are stacked, identification means for identifying the edge or side characteristics of each of the stacked articles, and edge or side characteristics for each type of article. Characteristic storage means storing the, and comparing the characteristics of the article identified by the identification means and the characteristics of each type of the article stored in the feature storage means, and a determination means to determine the type of each of the stacked articles, Calculating means for calculating the quantity for each type of article based on the determination result of the determining means, and sales unit price storage means for storing a sales unit price for each type of article;
The sales amount for each type of article is obtained from the quantity for each type of article calculated by the arithmetic means and the sales unit price for each type of article stored in the sales unit price storage means. A charge calculating means for obtaining the total amount;
Display means for displaying the total amount obtained by the charge calculation means, and the charge is settled based on the total amount displayed by the display means. 3. The system according to claim 2, wherein the identification means identifies the color as a feature of each edge or side of the stacked articles. 4. The system according to claim 2, wherein the identification means identifies the size as a feature of an edge or a side of each of the stacked articles. 5. The system according to claim 2, wherein the identification means identifies the shape as a feature of an edge or a side of each of the stacked articles. 6. The system according to claim 2, wherein the identification means identifies a pattern or pattern drawn on the edge or the side as a feature of the edge or the side of each of the stacked articles. . 7. A stack of dishes having different edge or side characteristics for each type of article, an identification means for identifying the edge or side characteristic of each of the stacked dishes, and a plurality of edge or side characteristics for each type of dish. A stored feature storage unit, a determination unit that compares the features of the dish identified by the identification unit with the features of each type of dish stored in the feature storage unit, and determines the type of each stacked dish; Calculating means for calculating the quantity for each type of dish based on the determination result of the determining means; sales unit price storing means for storing a sales unit price for each type of dish; and the quantity for each type of dish calculated by the calculating means. A charge calculating means for obtaining a selling price for each dish type from the selling unit price for each dish type stored in the selling unit price storing means, thereby obtaining a total price of all the stacked dishes; Displays the total amount determined by And a charge means for adjusting the charge based on the total amount displayed by the display means.