JP2005342175A - Automatic calculation method and fraud prevention system for card game in casino - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatic calculation method and a fraud prevention system for a card game in casino. <P>SOLUTION: A dealer IC tag reader position 4 is disposed in front of a dealer 2 of a game table 1, a monitor device 8 is disposed thereby, player IC tag readers 5 (5-1 to 5-5) are disposed in front of respective players 3, and a server device 7 is connected thereto. When the players 3 place chips 15 on the table, the IC tags 16 incorporated in the chips are read by the player IC tag readers 5, and a bet for every player 3 is calculated. When the dealer 2 deals out cards 10, the IC tags incorporated in the cards are read by the dealer IC tag reader position 4 and the player IC tag readers 5, and the types and the points of the cards 10 are automatically recognized. When the game is finished, the win/defeat and refund amounts to win players are calculated and the results are displayed on the monitor device 8. The IC tags of refund chips 15 are read, the refund amount and the calculated refund amount are compared and, when they are agreed with each other, the game is finished and, if they are not agreed, an alarm is notified and recorded. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a card game automatic calculation method and fraud prevention system in a casino.

  Conventionally, dealers have made decisions on winning and losing in casinos and calculating dividends. This often resulted in simple mistakes by dealers and in some cases fraud.

In order to deal with such problems, an IC tag is incorporated into the chip, the chip ID is automatically read from the IC tag of the chip that has been paid back to the player, and the refund amount is automatically calculated based on the read chip ID. A casino system that counts up is proposed. (For example, refer to Patent Document 1.)
Japanese National Patent Publication No. 10-508236

  The above casino system has been proposed to automatically calculate the sales of the entire casino in real time, and is effective in preventing chip counterfeiting. Especially, in the case of a game of a type in which the progress of the game depends on a human operation, such as a card game in which a dealer is interposed, it is difficult to completely prevent errors and fraud.

  In view of the above-mentioned conventional situation, the problem of the present invention is to manage the appropriateness of the game content in real time according to the progress of the card game, automatically calculate the refund amount, and whether the amount actually refunded is appropriate. An object is to provide an automatic card game calculation method and fraud prevention system in a casino for monitoring whether or not.

  The card game automatic calculation method according to the first aspect of the invention is a card game automatic calculation method in a casino, in which an IC (Integrated Circuits) tag used in a card game is incorporated, and at least one person An IC tag reading device disposed in a game card or casino chip placement area provided for each player, and a computing device connected to the IC tag reading device by wire or wirelessly. And when the card game is finished, the calculation device reads the card game stored in advance with an ID (identification) indicated by the IC tag of the game card read by the IC tag reader. Based on the rules, the player is configured to calculate the winning / losing rate of the player and the payout rate to the winning player.

  This card game automatic calculation method further includes, for example, a casino chip in which an IC tag used in place of the wager and payout of the card game is incorporated, and the casino chip is placed in the placement area as a wager. The IC tag reading device reads the ID of the IC tag of the casino chip on the placement area, and the arithmetic notification device reads the ID of the casino chip from the IC tag of the casino chip. The bet amount for each placement area is calculated based on the ID, and when the card game is over, the calculation notification device calculates the bet amount for each placement area and the payout rate. It is configured to calculate a refund for each entry area.

  Next, a fraud prevention system for a card game according to a second aspect of the present invention is a fraud prevention system for a card game performed by a dealer and a player in a casino, in which an IC tag used in the card game is incorporated. Card, casino chip incorporating an IC tag used as a wager and payout in the card game, and the game card or casino chip player provided corresponding to each card game player An IC tag reader for a player disposed in the placement area for the player, an IC tag reader for the dealer disposed in the placement area for the dealer of the game card provided corresponding to the dealer, Wired or wirelessly connected to the dealer IC tag reader and the player IC tag reader, the card game Constructed and a server device that manages the results after completion and progression.

  In this card game fraud prevention system, for example, when the casino chip is placed as a wager on the player placement area, the player IC tag reader is placed on the player placement area. A chip ID is read from the IC tag of the casino chip, and the server wagers for each placement area for the player based on the chip ID read from the IC tag of the casino chip by the player IC tag reader. When the card game ends, the player IC tag reader reads all card IDs for each player from the IC tag of the game card placed in the player placement area. The dealer IC tag reader is located above the IC tag of the game card placed in the dealer placement area. The server reads all the card IDs of the dealers, and the server determines the winning and losing of each player based on all the card IDs for each player, all the card IDs of the dealer, and the pre-stored game rules of the card game. The payout rate to the winning player is calculated, the payout amount to the winning player is calculated based on the payout rate and the calculated wager, and the calculation result is notified. When the casino chip is paid back to the player placement area of the winning player, the player IC tag reader reads the chip ID from the casino chip IC tag paid back to the player placement area. The server calculates a refund based on the ID read from the IC tag of the casino chip, the calculated refund, Comparing the refund calculated based on the refund and the refund rate, the end of the card game is notified when the comparison result matches, and the warning is notified when the comparison result does not match. The

  In this card game fraud prevention system, for example, the server notifies a warning when the comparison result does not match, and also specifies the ID of the dealer related to the warning and the date and time when the warning is notified. It is comprised so that it may record on a recording device.

  According to the present invention, the suitability of the game content is managed in real time according to the progress of the card game, the refund amount is automatically calculated, and whether the amount actually refunded can be monitored or not can be monitored. It is possible to prevent mistakes and frauds caused by dealers in the card game at the casino and to reduce the work of the dealers, thereby making it possible to advance the card game more accurately and efficiently.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a diagram showing a configuration example of a casino game system of the present invention. The system configuration shown in the figure shows the system configuration of a general card game table in a casino. In the card game table 1 shown in the figure, a plurality of players (customers) 3 (in the example shown in the figure, five players 3-1 to 3-5) play card play against a dealer 2. Be able to. Although only one card game table 1 is shown in this example, a plurality of card game tables 1 similar to those shown in FIG. 1 exist inside the casino.

  At a position in front of the dealer 2 of the card game table 1, a dealer IC tag reader position 4 is disposed in a dealer placement area where a dealer card is placed. Further, in the position in front of each player 3 on the card game table 1, a player chip is placed in a player mounting area in which a casino chip as a wager or payout or a game card distributed from the dealer 2 is mounted. IC tag readers 5 (5-1 to 5-5) are provided.

  The dealer IC tag reader 4 and the player IC tag reader 5 are embedded in the card game table 1, and a cover member laid on the card game layout is laid thereon. .

  A server device 7 is connected to the dealer IC tag reader 4 and the player IC tag reader 5 by a wire 6 (or may be wireless). The server device 7 may be provided for each card game table 1 or may be commonly connected to a plurality of card game tables 1. Moreover, the server apparatus which manages the information of all the games in a casino is not restricted to the card game table.

  In the vicinity of the position where the dealer 2 stands, a monitor device 8 is disposed adjacent to the card game table 1. The monitor device 8 is also connected to the server device 7, and displays the card game win / loss, the amount of the payout to each player, etc. on the display screen under the control of the server device 7.

  FIG. 2 (a) is a diagram showing the configuration of a game card according to the casino game system of the present invention, and FIG. 2 (b) shows the ID information of the IC tag incorporated therein and the card type and number. It is a chart which shows a correspondence. As shown in FIG. 1A, the game card 10 has an IC tag 11 and an antenna 12 connected to the IC tag 11 and stretched along the edge of the card, forming the front and back of the card. It is configured to be sandwiched between two thin plastic plates 13 and 14.

FIG. 2A shows a diamond ace (A) as a typical game card 10, but the above-described internal configuration of the card is common to all cards.
The IC tag 11 built in the game card 10 includes a CPU that operates at an excitation voltage and a memory in which ID information uniquely corresponding to the game card 10 is recorded.

  FIG. 2B shows an example of a correspondence relationship between the card number of such a game card 10 and the ID information uniquely corresponding to the card number and each card. As shown in the figure (b), the card types are in the order of heart A, 2, 3,... 13 and spade A 2, 2, 3,. 001, 002, 003,..., 013, 101, 102, 103,. That is, when the card number is indicated by a three-digit number, the last two digits of the three digits are number 1 (A) to number 13 (K), and the first digit of the three digits is “0”. Is a spade if the first digit of the 3 digit is “1”, a diamond if it is “2”, and a club if it is “3”.

  For such a card type and number arrangement, the ID information of the IC tag 11 corresponds to 10001, 10002,. The number “1” indicated by the first digit of the five digits is information indicating that the casino game member having the ID information is a “card”.

  And the serial number of this ID information does not return the serial number of 10001, 10002, 10003... To the heart A, 2, 3,. The number card up to 10048 and the number 10050 following 10049 (number corresponding to joker) are ID information corresponding to the heart A of the second set of cards. Assigned to a number. That is, the ID information is a number that is uniquely assigned to one card regardless of the type and number of the card.

  Therefore, when the game card 10 is forged and brought into the casino, it has the same ID information as the number assigned to the used card, the used card, or the unused card at that time. As a suspicious card, its presence is immediately revealed. Therefore, it is impossible to use a counterfeit card, and it is easy to prevent fraud in this respect as well.

  FIG. 3 (a) is a diagram showing the configuration of the casino chip according to the casino game system of the present invention, and FIG. 3 (b) shows the correspondence between the ID information of the IC tag incorporated therein and the type of casino chip. It is a chart which shows. The casino chip 15 shown in FIG. 3 (a) also has an IC tag 16 and an antenna 17 connected to the IC tag 16 and stretched around the chip circumference, like the game card 10 described above. It is embedded inside.

  The IC tag 16 built in the casino chip 15 is also provided with a CPU that operates with an excitation voltage and a memory in which ID information uniquely corresponding to the casino chip 15 is recorded.

  In this example, as shown in the correspondence chart 18 of the types of casino chips and ID information shown in FIG. 3 (b), the types of casino chips 15 are, for example, 100 yen chips, 500 yen chips, 1000 yen chips, 5000 yen chips. There are 5 types of chips and 10,000 yen chips.

  For such five types of casino chips 15, the ID information of the IC tag 16 built in the casino chip 15 consists of a 5-digit number, and the one-digit number at the head represents the type of chip. That is, if the first digit is “2”, it is a 100 yen chip, if it is “3”, it is a 500 yen chip, if it is “4”, it is a 1000 yen chip, if it is “5”, it is a 5000 yen chip, and “6” ", A one-digit number is assigned to each chip type, such as a 10,000 yen chip.

  Then, the last four digits are assigned in order by the number of chips for each chip. In the chart shown in the figure (b), the three numbers of 20006, 20007, and 20010 are missing from 20001 to 20011 of the 100 yen chip. The 100 yen chip of this number was lost and the customer took away. Or discarded due to damage. The same applies to the other 500-yen chips to 10000-yen chips that lack the serial number.

  Thus, also in the case of this casino chip 15, the ID information is a number that is uniquely assigned to one casino chip. Therefore, when the casino chip 15 is forged and brought into the casino, the same ID information as the number assigned to the missing casino chip, the used casino chip, or the unused casino chip is used at that time. The presence of suspicious casino chips is immediately revealed. Therefore, it is impossible to use counterfeit casino chips, and it is easy to prevent fraud in this aspect.

  FIG. 4 is a block diagram showing an internal configuration of the server 7 in the casino game system configuration shown in FIG. 1 having the game environment configured as described above. In the figure, a main control unit 20 is a circuit that controls the entire system based on a predetermined control program stored in a program area of the data storage unit 21.

  In addition to the control program described above, the data storage unit 21 has the same card game rules, the card type and number corresponding to the card type and number shown in FIG. The correspondence table between the types and numbers of the IDs and the ID information, the correspondence table between the types of casino chips and the ID information shown in FIG. Furthermore, a circuit and a device for storing a game win / loss history table and a dealer alarm recording table, which will be described later, and various other data for storage or temporary storage.

  The IC tag ID identifying unit 22 is connected to the dealer IC tag reader position 4 and the player IC tag reader 5 shown in FIG. 1, and these dealer IC tag reader position 4 and the player IC tag. This is a circuit for identifying the ID information of the IC tag 11 built in the game card 10 read through the reading device 5 and the ID information of the IC tag 16 built in the casino chip 15.

  The game rule management unit 23 identifies the type and number of the game card 10 from the number value of the ID information identified by the IC tag ID identification unit 21, and the data storage unit determined for each game. 21 is a circuit that manages the game in accordance with the rules stored in the game 21.

  The payout amount calculation unit 24 is a circuit for calculating the payout amount after the card game is finished. For example, in blackjack, the payout rate differs depending on whether the player wins with blackjack or not. For example, if an option rule such as insurance is adopted, calculation is performed according to the option rule.

  The payout amount comparison unit 25 compares the payout amount calculated by the dividend amount calculation unit 24 with the payout amount of the casino chip 15 actually allocated to the player 3 identified by the IC tag ID identification unit 22. Circuit.

  The alarm generation unit 26 is a circuit that generates an alarm when a difference occurs between the casino chip 15 distributed by the dealer 2 and the calculated casino chip 15 as a result of the comparison by the payout amount comparison unit 25.

  The profit / loss management unit 27 is a circuit that manages data collected from a plurality of card game tables 1 connected to the server 7 and calculates profit / loss in the card game department of the casino. Of course, when this server 7 is a server that manages the entire casino, not only the card game department but also the profit / loss obtained by collecting the results of various games of the entire casino is calculated.

  FIG. 5 (a) is a diagram showing a game win / loss history table recorded in the data storage unit 21, and FIG. 5 (b) is a dealer alarm record similarly recorded in another area of the data storage unit 21. It is a figure which shows a table.

  FIG. 4A shows the case of the game table 1 of blackjack as an example. The game win / loss history table 28 shown in FIG. 6A is created in the data storage unit 21 corresponding to each blackjack game table in the casino.

  As shown in FIG. 5A, in the game win / loss history table 28 in the blackjack game table 1, from the left of the table, the game table number, the fixed time when the game win / loss was decided, and the cards distributed to the dealer side are displayed. Dealer result indicating the total value, game result for each player, that is, in the example of the player 1, the result indicating the total value of the distributed cards, winning or losing with the dealer, wagers made by the player 1, payout when winning The amount and the total amount that is the amount remaining at hand in the game are recorded. When the player 1 wins, the total amount becomes a bet amount plus a payout amount. When the player 1 loses, the bet amount is confiscated and “0” and the payout amount is “0”, so the total amount is “0”.

  Further, the dealer alarm recording table 29 shown in FIG. 6B is provided with alarm records 31 (31-1, 31-2, 31-3,...) For each dealer (A, B, C,...) In advance. When an alarm described later occurs, the alarm occurrence date and time are sequentially recorded in the alarm record 29 of the dealer that generated the alarm.

  In the example shown in (b) of the same figure, it is recorded that dealer A has generated an alarm twice at a time 10:05 of 4/1 (April 1) and a time 12:25 of 4/3. ing. Also, it is recorded that dealer B has never generated an alarm, and dealer C has generated an alarm only once at 5:11, 11:31.

  FIG. 6 is a flowchart showing a processing operation in a case where a blackjack card game is taken as an example in the above-described casino game system of the present invention. This process is performed by the main control unit (CPU) 20 of the server 7 shown in FIG. Further, in the following description, the blackjack option rule is excluded and described.

  First, when playing a blackjack card game, the player 3 places an arbitrary number of casino chips 15 of an arbitrary type as a wager in a predetermined place on the game table 2 (in the blackjack, a casino chip called “betting circle”). The placement area, in this example, the player IC tag reader 5 is disposed immediately below the placement area). The casino chip 15 incorporates an IC tag 16 as shown in FIG.

  The CPU 20 reads the IC tag 16 built in the casino chip 15 placed on the above betting circle through the player IC tag reader 5, and the ID information of the read IC tag 16, that is, FIG. The ID number shown in (b) is identified through the IC tag ID identifying unit 22 (step 201).

  The ID number is unique to each casino chip 15 as described with reference to FIG. 3B, and there is no casino chip 15 having the same number. The number of casino chips 15 betted by the player 3 is determined by the number of casino chips identical to the contents of the chart 18 of the correspondence between the types of casino chips and the ID information shown in FIG. By searching for the ID number of the read IC tag 16 from the correspondence table of type and ID information, the type of the casino chip 15 bet can be easily identified and the total amount can be calculated.

  Since the player IC tag reader 5 is arranged for each player 3, the CPU 20 thereby calculates which player 3 bets how many casino chips 15 and a wager for each player (step). 202).

At this time, the CPU 20 may display the wager calculated for each player 3 on the display screen of the monitor device 8 to notify the dealer 2.
In this way, when the wagers (casino chips 15) for each player 3 are available, the dealer 2 distributes the game card 10. First, the dealer 2 distributes one game card 10 to each player 3 and the dealer 2 themselves in an open manner (so that patterns and numbers can be seen). The second sheet is distributed open to the player 3 and closed to the dealer 2 itself (so that the patterns and numbers cannot be seen).

  At this point, the CPU 20 reads the IC tag 11 of the game card 10 distributed to the dealer 2 and each player 3 via the dealer IC tag reader position 4 and the player IC tag reader 5, The ID information of the read IC tag 11, that is, the ID number shown in FIG. 2B is identified through the IC tag ID identifying unit 22 (step 203).

  The ID number is unique to each game card 10 as described with reference to FIG. 2B, and there is no game card 10 having the same number. The total number of points of the game card 10 distributed to the dealer 2 and each player 3 is determined according to the card type and number and ID information shown in FIG. The type of the distributed game card 10 can be easily obtained by searching the ID number of the read IC tag 11 from the correspondence table of the card type and number and the ID information which are the same as the contents of the correspondence chart 9 And the total number of points can be calculated.

  Then, the CPU 20 determines the dealer 2 and each of the cards based on the type and number of the card read and recognized through the IC tag reader device 4 for the player and the IC tag reader device 5 provided for each player 3. The score of the game card 10 distributed to the player 3 is calculated (step 204).

  In this process, the CPU 20 first recognizes the card type and number by the ID number, and then shows the recognized card number (corresponding to the card type and number corresponding to the ID information in FIG. Using the number shown in the “Card No.” field, for example, “101” for the ace of spades (A)), the calculation of the card score is performed using the last two digits of the number.

  In the blackjack card game, the player 3 can additionally draw the game card 10 if the player 3 thinks that the score is insufficient. Then, when all the players 3 are in a stay (does not require any additional game cards 10 to be drawn), the dealer 2 opens the second game card 10 that has been closed. If the total score of the two opened game cards 10 is 16 or less, the dealer 2 must draw as many game cards 10 as 17 or more.

The CPU 20 manages the progress of the game via the game rule management unit 23 in accordance with the blackjack game rules as described above (step 205).
The progress of the blackjack game ends when the total score of the game card 10 of the dealer 2 reaches 17 or more. Therefore, for example, when the total score of the game card 10 of the dealer 2 is 16 or less, the CPU 20 determines that the game is still in progress (No in Step 206). In this case, the process returns to Step 203, and Step 203 Repeat ~ 206.

  When the total score of the game card 10 of the dealer 2 is 17 or more, the CPU 20 determines that the game is over (step 206 is Yes). In this case, the CPU 20 determines that the game for the dealer 2 is The total score of the cards 10 and the total score of the game cards 10 of each player 3 are compared to determine the winning or losing of each player 3 (step 207).

  Generally, in a card game, a payout (payout) according to a wager must be made to a player who has won the game. Blackjack card game payout amount (dividend amount) is double the stake for player 2 who won except “first 2 cards are ace and picture card or 10”, blackjack or “ace and picture card or If you win 10 ”, 1.5 times your wager is calculated.

  The CPU 20 calculates a payout amount corresponding to the wager of the player 2 who has won based on the above rules via the dividend calculation unit 24, and sends the calculated payout amount to each player 3 in the data storage unit 21. It stores in the corresponding predetermined storage areas X1, X2,... (Step 208).

  Further, following the above processing, the CPU 20 records the above winning / losing result in the game winning / losing history table 28 shown in FIG. 5A (step 209). As a result, as shown in FIG. 5 (a), the game winning / losing history table 28 records the winning / losing, wagering, payout amount, total amount, etc., as a result of the winning / losing decision, each card score.

  At this time, the CPU 20 displays the game result of that time among the recorded data on the display screen of the monitor device 8. This eliminates the need for the dealer 2 to calculate the refund amount. That is, the dealer 2 may pay back the casino chip 15 to the winning player 3 in accordance with the payout amount displayed on the display screen of the monitor device 8. The casino chip 15 to be paid out is temporarily placed on a card / chip mounting area in which the player IC tag reader 5 of each player 2 is disposed.

  The CPU 20 reads the IC tag 16 of the casino chip 15 that has been paid back through the player IC tag reading device 5, and identifies the ID information of the read IC tag 16 through the ID identifying unit 22 (step 210).

  Then, based on the identified ID information, the CPU 20 actually repays the casino chip 15 based on the actually repaid casino chip 15 type obtained from the casino chip type / ID information correspondence table. Are calculated and stored in predetermined storage areas Y1, Y2,... Corresponding to each player 3 in the data storage unit 21 (step 211).

  Subsequently, the CPU 20 compares the payout amount X (X1, X2,...) Calculated in step 208 with the payout amount Y (Y1, Y2,...) Calculated in step 211 (step 212).

  Then, if the comparison results match like Xi = Yi (i = 1, 2,...) (Yes in step 212), in this case, the CPU 20 determines that the game has been completed normally. To finish the process.

  On the other hand, if the comparison results are different such as Xi ≠ Yi (No in step 212), in this case, the CPU 20 generates an alarm and, as shown in FIG. 5B, the dealer alarm recording table 29 The occurrence of the alarm is recorded in (Step 213), and the process is terminated.

  In this alarm generation and recording process, it is possible to notify the display screen of the monitor device 8 that an error has occurred, or to notify the guards and control center of the casino hall of the content of the error.

  It should be noted that the refund error of the casino chip 15 that caused the alarm occurrence must be recorded in the dealer alarm record table 29 of FIG. 5B regardless of whether the dealer is intentional or negligent. There is. Thereby, it is possible to prevent a refund error or fraud of the casino chip 15 by the dealer 2.

  In the above embodiment, the blackjack card game has been described as an example. However, the present invention is not limited to this, and it goes without saying that the present invention can be applied to any type of card game.

It is a figure which shows the structural example of the casino game system of this invention. (a) is a figure which shows the structure of the card | curd for a game based on the casino game system of this invention, (b) is a chart which shows the corresponding | compatible relationship between the ID information of IC tag built in it, the card | curd type, and a number. (a) is a figure which shows the structure of the casino chip | tip concerning the casino game system of this invention, (b) is a chart which shows the corresponding | compatible relationship between ID information of the IC tag incorporated in it, and the kind of casino chip. It is a block diagram which shows the internal structure of the server in the structure of the casino game system which has the game environment of this invention. (a) is a figure which shows the game win / loss history table recorded on the data storage part of a server, (b) is a figure which similarly shows a dealer alarm recording table. It is a flowchart which shows the processing operation at the time of taking the blackjack of the casino game system of this invention as an example.

Explanation of symbols

1 Card game table 2 Dealer 3 (3-1 to 3-5) Player (customer)
4 IC tag reader device position for dealer 5 (5-1 to 5-5) IC tag reader device for player 6 Wired 7 Server device 8 Monitor device 10 Game card 11 IC tag 12 Antenna 13, 14 Plastic board 15 Casino chip 16 IC tag 17 Antenna 20 Main control unit (CPU)
DESCRIPTION OF SYMBOLS 21 Data memory part 22 IC tag ID identification part 23 Game rule management part 24 Dividend amount calculation part 25 Refund amount comparison part 26 Alarm generation part 27 Profit / loss management part 28 Game win / loss history table 29 Dealer alarm recording table 31 (31-1, 31) -2, 31-3, ...) Alarm record

Claims (5)

An automatic card game calculation method in a casino,
IC (Integrated Circuits) cards used in card games and game cards with built-in tags,
An IC tag reader arranged in a placement area of a game card or casino chip provided corresponding to at least one or more players;
A computing device wired or wirelessly connected to the IC tag reader;
With
Based on an ID (identification) indicated by the IC tag of the game card read by the IC tag reader and a pre-stored game rule of the card game, An automatic card game calculation method comprising calculating a payout rate to a winning player. Further comprising a casino chip incorporating an IC tag used in place of the wager and payout of the card game;
When the casino chip is placed in the placement area as a wager,
The IC tag reader reads the IC tag ID of the casino chip on the placement area,
Based on the ID read from the IC tag of the casino chip by the IC tag reading device, the calculation notification device calculates a wager for each placement area,
When the card game is over,
2. The card game automatic calculation method according to claim 1, wherein the calculation notification device calculates a payout amount for each placement area based on a bet amount calculated for each placement area and the payout rate. . A fraud prevention system for card games performed by dealers and players in a casino,
A game card incorporating an IC tag used in the card game;
Casino chips incorporating IC tags used as wagers and refunds in the card game;
An IC tag reader for a player disposed in a player mounting area of the game card or the casino chip provided corresponding to each player of the card game;
A dealer IC tag reader disposed in a dealer placement area of the game card provided corresponding to the dealer;
A server device that is connected to the dealer IC tag reader and the player IC tag reader in a wired or wireless manner, and manages the progress of the card game and the results after the card game;
A card game fraud prevention system characterized by comprising: When the casino chip is placed as a wager on the player placement area,
The player IC tag reader reads a chip ID from an IC tag of the casino chip placed in the player placement area,
The server calculates a wager for each player placement area based on a chip ID read from the IC tag of the casino chip by the player IC tag reader.
When the card game is over,
The player IC tag reader reads all card IDs for each player from the IC tag of the game card placed in the player placement area,
The dealer IC tag reader reads all the card IDs of the dealer from the IC tag of the game card placed in the dealer placement area,
The server calculates the winning / losing rate for each player and the payout rate to the winning player based on all card IDs for each player, all card IDs for the dealer, and pre-stored game rules for the card game. Calculate the payout amount to the winning player based on the payout rate and the calculated wager, and inform the calculation result,
When the casino chip is paid back to the player mounting area of the winning player by the dealer based on the notification,
The player IC tag reader reads the chip ID from the casino chip IC tag paid back to the player mounting area,
The server
Calculate the refund based on the ID read from the IC tag of the casino chip,
Comparing the calculated refund with a refund calculated based on the wager and the refund rate;
When the comparison result matches, the end of the card game is notified,
Annunciating a warning when the comparison results do not match,
The card game fraud prevention system according to claim 3.   The server notifies a warning when the comparison results do not match, and records in a predetermined recording device the ID of the dealer involved in the warning notification and the date and time when the warning was notified. 5. A fraud prevention system for a card game according to claim 4.