JPS63262173A - Mahjongg score calculation apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a mahjong score calculation device that is used in place of a dot bar in mahjong, is capable of calculating dot bars, and is capable of displaying the parent and field. .

[Prior art]

Conventionally, a device has been proposed in which operating bodies are arranged on each side of a table so that points can be paid and received without using a point stick, and each operating body is provided with an indicator lamp that lights up to indicate the parent.

However, the lamp lit at the parent's position may become invisible due to the stack of mahjong tiles or the player's body.

Therefore, the present applicant, in Japanese Patent Application No. 62-3450,
A mahjong score calculation that can easily confirm the parent at each player's position and solve the above-mentioned problem by displaying a parent instruction mark on the score display of the operating body placed on each side of the table. proposed a device.

[Problem that the invention seeks to solve]

However, the device disclosed herein does not include a field display device for displaying the field, and therefore, when displaying the field in addition to the score and the parent indication mark on the score display device, it is sometimes difficult to understand. be.

Therefore, an object of the present invention is to provide a mahjong score calculation device in which each operating body is provided with a field indicator that displays the field, and the field can be easily and reliably confirmed.

[Means for solving problems]

An embodiment of the present invention will be described below based on the drawings.

In the figure, a mahjong score calculation device 1 includes operating bodies 2 placed on each side 4A, 4B, 4C, and 4D of a table 4 where a player is seated.
A, 2B, 2C, 2D and a control body 3 to which each operating body is connected, and in addition to the point calculation that occurs in a mahjong competition, the display of the parent who moves with the competition and the display of the field that changes as the parent moves. This is a possible mahjong score calculation device, in which each operating body 2A-D includes a parent setting means 9 for setting a parent, a display device 6 consisting of at least 7 segment display elements arranged in a figure 8 shape, and a field. The control main body 3 includes a display device 13 for each operating body, and the control main body 3 has a U-shaped parent support for the display device 13 of each operating body, the opening of which faces the parent set by the parent setting means 9. In addition to displaying the mark, the field indicator 13 displays the field that has changed each time the set parent goes around.
It is equipped with arithmetic means 10 for displaying.

Further, in this example, the operating bodies 2A-D include a chip number input means 8 for inputting the number of chips to be paid and received, and a payment destination input means 7 for specifying the chip payment destination. The control main body 3 has a storage means 11 that stores the number of chips before payment/reception for each operation tool. Further, the calculating means 10 retrieves from the front storage means 11 the number of chips before being paid or received by the operating body operated by the cough light receiving input means 7 and the operating body specified by the cough clearing light receiving input means 7, and The number of chips inputted by the number input means 8 is added to or subtracted from one number, and the other number is subtracted from and added to the other number, and the results are displayed on each display according to each operating body. .

Furthermore, each of the operating bodies 2A to 2D has a score input means 5, and the storage means 11 stores the points held by each player in advance in each of the operating bodies 2A, 2B, 2C, and
While it is equipped with a storage unit for storing points corresponding to 2D,
The calculation means 10 calculates the input points inputted by the point input means 5 by calculating the input points of the player who is the payee stored in the held points storage section corresponding to the payee's operating body designated by the payee input means 7. Add to the number of held points and subtract from the held points of the player on the paying side stored in the held point storage unit corresponding to the operating body of the paying side, and correspond to the held points stored in each held point storage unit. It is displayed on the display device 6 of the operating body.

The operating bodies 2A, 2B, 2C, and 2D have the same configuration,
It is formed into a unit shape and is detachably attached to each side of the table 4 to facilitate maintenance.

Note that the operating bodies 2A to 2D are collectively referred to as the operating body 2.

FIG. 2 shows one operating body 2A and other operating bodies 2B to 2D.
The positional relationship and orientation of each display device 6 are shown in correspondence with the parts of each display device 6.

The operating body 2 has a printed circuit board housed in a horizontally long rectangular case 51. Further, the upper surface of the case 51 is covered with a flexible sheet, and a start/end switch 3, which will be described later, is covered with a flexible sheet.
Key switches other than 8 are operated via the sheet. This prevents malfunctions caused by food, drink, dirt, etc.

In this embodiment, the chip number input means B consists of one key switch labeled "diffusion" and is provided at the right end of the case 51. Further, a special number display key 35 is provided below, which is operated when checking the special number of the chip.

The score input means 5 consists of a numeric keypad from 0 to 9 provided on the right side of the center.

The payment/receiving light input means 7 is provided between the chip number input means 8 and the score input means 5, and consists of three keys (marked with arrows) ?L, 7C, and 7R facing left and right.

The display device 6 is provided on the left side of the score input means 5, and consists of a 4-digit, 7-segment red LED display element.

Further, the number "00" is printed in red adjacent to the lower digit of the display 6, meaning that the first digit is the hundreds digit when displaying the score.

In addition to the various input means described above, each operating body 2 has a parent setting means 9, which is a key switch and has a diagram of a die below the third digit of the display 6, and a "flow" means below the fourth digit. '', a reach key 32 on the right side of the parent setting means 9, a receiving key 33 between the score input means 5 and the display device 6 and marked "Receive", the score input means 5 and the private expense input means 7. A clear key 34 between the two, a chicha key 36 and a total key 37 on the left side of the display 6, and a start/end switch 38 consisting of a slide switch are provided.

In addition, each key switch and slide switch mentioned above is
It is attached to the printed circuit board to form a switch matrix circuit GK shown in FIG.

The operating body 2 also includes a field display tool 13 that displays the field, a minus display tool 43 that is paired with the display tool 6 and displays a minus sign,
It is provided with a receipt display device 45 that pairs with the receipt key 33, three private expense destination display devices 44L, 44C144R corresponding to each key 7L, 7C27R of the private expense optical input means 7, and a reach indicator 46 corresponding to the reach key 32.

In addition, these indicators 13.43.44.45.46 are L
It consists of an ED element, and together with the display device 6, 5a and 5b
The indicator circuits CDI and CD2 shown in the figure are formed.

Each of the operating bodies 2A, 2B, and 2C12D is electrically connected to four cords extending from the control M main body 3 using connectors.

The control main body 3 is attached to, for example, the lower part of the table 4, and as shown in FIG. An alarm on/off switch 29 and an oven close switch 31 are provided. Further, the processing means 10, the storage means 11, the power supply device 52, and the first and second alarm devices 25 and 26 are housed inside.

In this embodiment, the calculation means 10 is a CPU of a so-called one-chip microcomputer, and this CPU, RAM, and programmable! 10 is integrally molded, and a ROM in which a program is written is attached externally. It goes without saying that the means described above may be constructed using individual circuits.

The storage means 11 is composed of the RAM, and includes four chip number storage sections for each operating body, a total chip number storage section, a saved points storage section, and a cumulative points storage section. It includes a point storage section, a parent position storage section, a reach distance storage section, and the like. Also, a chip number storage unit, a cumulative chip number storage unit,
Each storage unit that stores data for each athlete, such as the number of points held and the total number of points stored, has front and back sides that temporarily store the data that is transferred during a change of places and the original data. It includes a memory display section.

In addition, as illustrated in FIG. 4, the input/output ports of Ilo include the circuits CDI and CD shown in FIGS. 5a, 5b, and 6.
2, CK, first alarm 25, second alarm 26, switch 22, 27, 29, 31, etc. are connected. Note that the alarm devices 25 and 26 have clearly different tones, and in this example, an electronic buzzer that emits a "beep" sound and a buzzer that emits a "boo" sound are used, respectively.

The power supply device 52 includes a power transformer, a rectifier circuit, a constant voltage circuit, and a backup battery that retains the memory contents of the storage means 11 and supplies power during a power outage. Further, the power supply line is separated into a system for the CPU, RAM, Ilo, and ROM and a system for the display device using a diode, and the backup battery is arranged for the CPU system. The power outage switch 23 connects the backup battery and the system of display devices during a power outage, and when the power outage switch 23 is turned on, power can be supplied to each display device.

With this configuration, the display device that consumes a large amount of current can be disconnected at all times, and the backup battery can be prevented from being exhausted.

Next, the operation of the device 1 configured as described above will be explained.

(1. Initial Settings) With the power switch 24 turned off, the following initial settings are performed prior to the game.

(1-1, Setting of alarm conditions) The alarm condition setting switch 27 can set the following two modes. ■Mode 1: When set to the "long" side, the calculation means 10
When the number of points held by each contestant, that is, the number of points stored in each held point storage section becomes negative, a second alarm 26 is activated.
can be activated.

(2) Mode 2: When set to the "B" side, the second alarm 26 can be activated not only under the above-mentioned mode conditions but also when the number of points held by the contestant becomes twice the return points.

With this setting, it becomes possible to play the so-called Boomerchian, where a small number of points, such as 2,000 points, are given as points, and the game ends when the points are exhausted.

(1-2, Alarm on/off settings) The alarm on/off switch 29 can be set to the following two modes. ■On mode: When set to the "Doboshi" side, the calculation means 1
0 activates the alarm device 26 in accordance with the alarm condition and issues an alarm.

■On mode: When set to the "None" side, the alarm 26 will not be activated even if the above alarm conditions are met.

(1-3, Setting the open/close mode) The oven/close switch 31 can be set to the following two modes. Open mode: When set to the "point check" side, the calculation means 10 operates on a certain operating object (e.g. The display device 6 of 2A) displays the number of points stored in the number of points storage unit corresponding to the other operating objects (2B, 2C12D). In other words, you can check the points held by other contestants ■Close mode: When set to "None" side, calculation means 1
0 does not display the scores of other contestants.

(Setting the number of players 1-4, 11) The number of players setting switch 22 can set a four-player mode and a three-player mode.

(2, Semi-1) Set these switches 22, 27, 29, 31 to the desired conditions, switch each start/end switch 38 of each operating body 2A to 2D to the end side, and turn the power switch 2
Turn on 4.

The power supply device 52 supplies power to the calculation means 10 and the storage means 11, and at the same time, the CPU is reset by the power-on restart circuit and the program written in the ROM runs.

By running the program, the calculation means 10 reads the setting state of the number of competitors setting switch 22 and the storage means 11
write to.

Next, the calculation means 10 causes the display device 6 of each operating body 2 to display rO
J and each switch matrix circuit C
K is soft scanned and enters a state of waiting for input (FIG. 7, D2).

(2-1, Input of Return Points) In this state, return points (for example, 300 in the case of 30,000 points) can be input from any point input means 5. After inputting the return point (FIG. 7, D2-1), press the lami key 31 (D2).
The return point is stored in the return point storage section of the storage means 11.

(2-2, Input of Points Owned) Next, the number of points held by each contestant in advance, so-called points held (for example, 270 in the case of 27,000 points) is input using the point input means 5 (D2-2).

Continue to press the lami key 31 in the same way as last time (D2).

The calculating means 10 is set to return 30,000 points from 27,000 points by performing an operation of 0 or more to store the points held in the points storage section.

(2-3, Input of field fee) Next, the field fee to be collected from the winner (for example, 100 when the score is 10,000 points) is input (D2-3).

Continue to press the Lami key (D2).

When this setting is completed, the calculation means 10
-2D display devices 6 are placed in the standard display state shown in FIG. This standard display state refers to a state in which the number of rams is displayed in the fourth digit and the parent indication mark is displayed in the third digit.

Further, the parent pointing mark has a U-shape expressed using three of the four segments of cSdSeSg, and its opening runs in one direction. For example, in the initial state, the operating tool 2A
suitable for

(2-4, Chee-cha settings) Press the parent setting means 9, and the calculation means 10
A random number from 2 to 12 representing the number of the dice is displayed in the ~4th digit (D2-4A), and when the Chee-cha key 36 is pressed, this random number is stored in the dice storage section of the storage means 11, and the standard display state is returned again. becomes. The Chee Cha key 36 performs a toggle operation, and when pressed again, the calculation means 10 displays the random number in the dice storage section again.

A so-called parent is determined by this random number, and the parent is set by the parent setting means 9 of one of the operating bodies 2. Each time the parent setting means 9 is pressed in the reference display state, the calculating means 10 rotates the parent indication mark of each operating body 2A to 2D counterclockwise by 90 degrees (D2-4B), and
The parent position of the parent position storage section provided in the storage means 11 is updated to store the latest parent position.

(3, Start of the game) When the setting of the Chee-cha is finished, all the operating bodies 2A~
Set the 2D start/end switch 38 to the start side to start the game.

The calculation means 10 stores the points held in the points stored in each held points storage.

(3-1, When applying a reach) For example, when a player A sitting on the side 4A of the table 4 wants to apply a reach, he uses the point input means 5 of his operating body 2A to make a reach (for example, 1000 points). When 10) is input, D3-IA) is pressed, and reach key 32 is pressed (D3-I
B).

When the reach key 32 is pressed, the calculation means 10 operates the first alarm 25 intermittently for a short time and activates the second alarm 26.
While emitting an alarm with a tone different from that, the reach indicator 46 of each operating body 2 is lit, and each indicator 6 displays reach status (3-IB). At this time, the fourth digit is "Rami" , 3rd
The digit indicates "Oya", and the first and second digits indicate reach. The overflow of these two digits is displayed in the fourth to third digits by pressing the reach key 32. Further, the calculation means 10 stores the reach possibility in the reach amount storage section of the storage means 11, and subtracts the reach possibility from the number of points stored in the possession points storage section corresponding to the operating tool 2A.

(3-2, Giving and receiving points) For example, when paying from the operating tool 2A to the opposing operating tool 2C, in this example, the paying player uses the point input means 5 of his/her operating tool 2A to make the payment. Enter the score (for example, 15 for 1,500 points) (D3-2A) and press the key 7C representing the facing side of the private optical input means 7 (D3-IB).

The calculation means 10 is a private expense indicator 44 paired with the key 7C.
C is turned on and the first alarm device 25 is activated intermittently to issue an alarm. Therefore, other players can know that points will be passed.

On the other hand, on the side of the receiving player's operating body 2C, the calculation means 10 blinks the light display 45, lights up the private expense display 44G indicating the payment source, and displays the payment points on the display 6. Display (03-2A).

Therefore, the player on the receiving side confirms the displayed score and payout source, and presses his own receiving key 33.

The calculation means 10 subtracts the points from the number of points stored in the points storage unit of the paying player and adds them to the number of points stored in the stored points storage unit of the receiving player. The operation of the alarm device 25 of No. 1 is stopped.

In addition, the calculating means 10 also displays the paid points for a certain period of time on the display devices 6 of the operating bodies 2B and 2D of other contestants who have not received the points (D3-2A), and then Standard display form for each display device 6! 1 (D3 or D3-IB).

(3-3, Receive Reach) For example, in order for the player using the operating body 2C to receive the Reach, it is necessary to receive points from other players, that is, players seated on sides 4A, 4B, and 4D. , after pressing the reach key 32, the receiver presses the key 33.

When the reach key 32 is pressed, the calculation means 10 turns off the reach indicator 46 and displays the total reach and score on the operating body 2C.
displayed on the display device 6.

Next, when the receiving player presses the key 33, the calculation means 10 adds the above-mentioned reach or the sum of the reach and the score to the points held by the receiving player stored in the held points storage unit, and the reach fee storage unit , and the contestant receives key 33.
After pressing , for a certain period of time, the indicator 6 of the other contestant's operating body will be displayed.
The score will be displayed on the screen.

(3-4, Alarm) When the alarm on/off switch 29 is in the on mode, the calculation means 10 detects when the number of points held by the player becomes negative due to the above-mentioned reach or payment of points, or when the number of points held becomes a return point. When it becomes twice as large, the second alarm 26 is activated to issue an alarm.

, (3-5, Check the number of points you own) (3-5-1, Check the number of points you own) Own operating body 2
When the receiver key 33 is pressed, the calculation means 10 displays the number of points stored in the number storage unit corresponding to the operating tool 2 on the display 6 of the operating tool 2.

(3-5-2, Checking the number of points held by other contestants t Press key 7L of input means 7.

The calculation means 10 displays the number of points owned by the player on the left side stored in the number of points stored on the display device 6 of the operating tool 2A.

(3-6, Rami and Parent's Confirmation Vl> During the game, whenever points are not paid or received, the calculation means 10 displays the parent instruction mark and the number of rami on the display device 6 of all the operating bodies 2. is displayed.

(3-7, Receiving and passing on chips) For example, when paying from the operating tool 2A to the operating tool 2B on the right side, in this example, the paying player uses the chip number input means 8 of his operating tool 2A. input the number of items to be paid, and press the key 7R on the right side of the private expense light input means 7.

The calculation means 10 counts the number of times the chip number input means 8 is pressed, and displays it blinking on the display 6 as the number of chips to be paid (
D3-7) When the key 7R is pressed again, the private expense indicator 44R paired with the key 7R flashes and the first alarm 25 is continuously activated to issue an alarm.

In this way, the display becomes point M (different from the lighting in the case of points), and the alarm is continuous (intermittently in the case of points),
It can be easily determined whether points or chips are being paid and received.

On the other hand, on the receiving player's operating body 2B side, the calculation means 10 blinks the receipt display 45 and the private expense display 44L indicating the payment source, and further blinks the number on the display 6 (D3 -7).

Therefore, the contestant confirms the number of pieces and the source of payment, and presses the key 33 for his/her acceptance.

The calculation means 10 subtracts the number from the number of chips stored in the chip number storage unit of the paying player and adds it to the number of chips on the receiving side, and calculates the number of chips for each of the other players who have not received chips. After all the display devices 6k including the operating bodies 2C and 2D blink and display the number for a certain period of time, each display device 6 is returned to the standard display state (D3 or D3-IB) and the first alarm device 25 is turned off. Stop operation.

(3-8, Confirmation of owned chips) Press the special number display key 35 on the own operating body 2, calculation means 1
0 indicates the number of chips corresponding to the operating body 2.
A blinking display is displayed on the display device 6 (D3-7).

(3-9, Confirmation of Score/Tip Private Expense) When the clear key 34 is pressed in the standard display state, the last payment/receipt made with the operating tool 2, in this example the payment, is reproduced.

The storage means 11 stores the type of last payment/receipt made for each operation tool 2, that is, the number of points or the number of payments made, the number of points or pieces, and the payee. The calculation means 10 displays those data on the display device 6,
The private expense display device 44 reproduces the state before the receive key 33 is pressed. This makes it possible to reproduce a payment made in error and issue a refund after verifying it, thereby preventing troubles caused by it.

(4, - End of the game) - (4-1, Parent's Rami) In the case of consecutive games, when the parent presses the parent setting means 9 of his own operating body 2, the calculation means 10 adds the Rami. and is displayed in the fourth digit of each display device 6.

(4-2, Parent movement) The next parent presses the parent setting means 9 of his or her operating tool 2.

The calculation means 10 rotates each parent indication mark 90 degrees to the left so that the opening thereof faces toward the parent, and updates the parent in the parent position storage section. In addition, when moving by Nagare station, please use “Nagare”.
Press the lami key 31 marked .

(4-3, Confirmation of field) When the parent goes around, the calculation means 10 increases the number of fields stored in the field storage section by 1, and changes each lamp of the field indicator 13 to the number of fields as shown in Table 1. Lights up accordingly.

When the Chee-cha key 36 is pressed in the first table, the calculation means 10 displays the number of places in the fourth digit and Chee-cha in the third digit of the display 6 of the operating body 2.

(5. Ending the game) Set all start/end switches 38 to the end side for each half-way.

The calculation means 10 displays the number of games played in the first digit of each display device 6 (FIG. 7, D5) and also performs aggregation.

(5-1, Totalization of scores) When all the start/end switches 38 are switched to the end side, the calculation means 10 calculates the score of each contestant based on the return points and the initial number of points. , the number of points owned by each athlete stored in each number storage unit is 400.
00.20000, -10000, 58000, the return point stored in advance in the return point storage section is 3.
0000 and the number of points stored in the point storage unit is 27000, so subtract the return points from the number of points held and get 10000 for each float, Shizumi, -10000° -4000
Calculate 0,28000. Furthermore, the calculation means 10 detects the maximum score of 28,000 from the calculation result, and
00, add the difference of 12,000 between the return point and the own point, and subtract the field fee of 10,000. Therefore, each contestant's score is 1
0000, -10000, -40000.30000, and these scores are stored in each possessed points storage section and added to each accumulated points storage section of the storage means 11.

Similarly, the number of chips in the chip number storage section is added to the cumulative chip number storage section.

(5-2, Confirmation of score) When the receiver wants to confirm the score of the completed game, the receiver presses the key 33, and the calculation means 10 displays the score stored in the score storage section corresponding to the operating body 2 on the display device 6. to be displayed.

(5-3, Checking the cumulative score) When you want to check the cumulative score, press the cumulative total key 37. The calculation means 10 displays the cumulative score stored in the cumulative score storage section corresponding to the operating body 2 on the display device 6. to be displayed.

(5-4, Checking the cumulative number of chips) When the special number display key 35 is pressed, the calculation means 10 flashes on the display 6 the cumulative number stored in the cumulative chip number storage unit corresponding to the operating body 2. do.

(6. Change of place of player) For example, if player A who was seated on side 4A of table 4 moves to side 4B, in this example, player A moves to side 4B and operates the movement destination. The previous position 4A is designated using the personal expense input means 7 of the body 2B. That is, since sides 4B to 4A are on the left side, press key 7L.

The calculation means 10 stores the points held by the player A in the front storage section of the held points storage section that stores the points of the player B, and stores the points of the original player B in the back storage section. The points held by other contestants are also stored in each storage section of the table by the same operation. In addition, in the above (start of the game), when the start/end switch 38 is switched to the start side, the calculation means 10 calculates the points after movement stored in the storage section of each front side and the points stored in the storage section of the back side. Compare the number of points held before the move, confirm that the move operation was performed correctly, and transfer the points in the back storage section with the points in the front storage section.

The replacement procedure is for contestant A to specify the destination side 4B using the personal expense input means 7 of his operating body 2A, that is, to press key 7R since sides 4A to 4B will be on the right side. It's okay.

If you want to continue playing the game again, start from the procedure described above (starting the game).

(7. Correction of input) (7-1. Correction after starting the game) When the clear key 34 is pressed after inputting various points or the number of chips, the calculation means 10 cancels the input data and displays the standard. state.

(7-2, Correction after the game is over) When the clear key 34 is pressed when changing the place of the player,
The calculation means 10 restores the data specified by any key of the input light reception input means 7 and stored in the table storage section.

In this way, corrections can be made when the score or the number of chips is input, but once the private expense input means 7 is operated, all corrections are impossible, and only the receiving key 33 pressed by the recipient is allowed.

If it were possible to correct the private expense account in the private expense input means 7, the recipient would make the correction just before pressing the receipt key 33, making it appear as though the payment had been made even though the payment had not actually been made. This is because false fraud becomes possible.

In addition, the input methods are divided so that the number of points is entered using a numeric keypad and the number of chips is entered using the number of key presses.Furthermore, the display method and alarm sound are also different depending on the number of points and chips. This can prevent confusion between the two.

When paying or receiving points or chips, the first alarm device issues an alarm and notifies other players, thereby preventing fraudulent exchanges.

In addition, in the device of the present invention, the field display device may include two lamps in the northeast and two lamps in the northwest, so that one of the four lamps is lit. Furthermore, the number of chips can be entered using a numeric keypad, and the display device for displaying the number of chips and the display device for displaying the score can be separated.

Furthermore, by pressing the parent setting means 9, a random number □ representing the number of the dice is displayed, and a signal for operating the electric dice of the automatic mahjong table can also be output. In addition, it is possible to draw the price from the top (in addition to that, it can also be drawn from the last), and it is also possible to provide a setting switch to set which part to draw from.

(Effects of the Invention) Like Unegami, the mahjong score calculation device of the present invention is capable of displaying the field in addition to displaying the parent, so the parent and the field can be clearly confirmed, and troubles caused by misunderstandings can be avoided. It can have many effects in preventing this.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the mahjong score calculation device of the present invention attached to a table, Fig. 2 is a plan view showing its operating body, and Fig. 3
The figure is a front view showing the control body, Figure 4 is a block diagram of an electric circuit that can be used in the device of the present invention, Figures 5a and 5b are circuit diagrams of the display section, and Figure 6 is a diagram showing the display pattern. be. 2.2A-D...operating body, 3...control body, 4
・-・Desk, 4A-D・・・Table side, 5・・・Score input means, 6・・・・Display device,
7.--Private expense input means, 8.--Tip number input means, 9.--Parent setting means, 10.--.-
・Calculation means, 11... Storage means, 13.
−・−・Place display device. Patent applicant Asao Kakumoto Agent Patent attorney Tadashi Naemura 1st! Im Figure 7

Claims (1)

[Claims] (1) Equipped with operating bodies arranged on each side of the table where the contestants are seated and a control body to which each operating body is connected, in addition to the point bar calculation that occurs in mahjong competitions, the parent display that moves with the competition, and the A mahjong score calculation device capable of displaying a field that changes with movement, in which each operating object has a parent setting means for setting a parent, and a display consisting of at least 7 segment display elements arranged in a figure 8 shape. and a field display tool for displaying a field, and the control main body has a U-shaped parent on the display tool of each operating body, and an opening thereof faces the parent set by the parent setting means. A mahjong score calculation device comprising calculation means for displaying an instruction mark and displaying a field that changes each time the set parent goes around on the field display device.