JP4606111B2 - Game machine management device - Google Patents

Description

  The present invention relates to a gaming machine management apparatus, and more particularly, to a gaming machine management apparatus that finds unauthorized games based on gaming information.

  In recent years, a fraudulent act has been performed in which a special device is connected to a ball game machine (pachinko machine) to artificially manipulate the probability of a jackpot in a variable display game. In such a fraudulent act, when the fraudulent himself / herself plays a game with a ball game machine connected to the device, the probability of jackpot is set high, while a player other than the fraudulent acts as a game When performing, the probability of jackpot occurrence can be set low. For this reason, the probability of jackpot hits falls within an average value when the ball game machine is viewed over a long period of time, despite the fact that fraudulent acts are being carried out. Therefore, it is difficult to detect fraud by simply managing the overall jackpot frequency.

  In view of this, a gaming machine monitoring device that determines the distribution of jackpot occurrences and manages the presence or absence of abnormality in the distribution state has been proposed.

  For example, there is a gaming machine monitoring device that determines whether or not a correct distribution is obtained by testing the fitness of a theoretical distribution and an actual distribution (see, for example, Patent Document 1).

  In addition, a gaming machine that determines an abnormality of a gaming machine by comparing the actual number of games and the threshold value with the upper and lower limits of a region having a low occurrence frequency as threshold values from a theoretical frequency distribution or a frequency distribution obtained by simulation. There is a management device. Theoretical frequency distribution is calculated from the frequency distribution of the number of special prizes in a small number of rotations, extracting gaming machines that exceed the upper limit and the lower limit of the number of special prizes generated in a small number of rotations, or calculated from the frequency distribution of the number of occurrences of probability fluctuations For example, a gaming machine in which the jackpot occurrence frequency by the probability variation design is more than the theoretical value is extracted. In any case, it is a method to warn of the occurrence of fraud when a rare occurrence occurs from the frequency distribution of the number of games (special prizes, number of symbol stops, probability occurrence state, etc.) under the set conditions ( For example, see Patent Document 2.)

Both technologies are based on statistics, and detect a state that deviates from a theoretical distribution or a state that occurs less frequently than a value calculated from the distribution as illegal.
JP-A-8-196722 Japanese Patent Laid-Open No. 11-342253

  However, in the determination based on the frequency distribution as described above, since a considerable amount of data needs to be accumulated, real-time or rapid abnormality detection cannot be performed.

  In addition, when determining whether a gaming machine to be monitored is normal or abnormal by using a statistical test method, if the risk rate is set strictly, there is a risk that considerable fraudulent acts may be overlooked before making an abnormality determination. is there. On the other hand, if the risk factor is set sweetly, it is determined that there is an abnormality that can normally occur, and abnormality determination frequently occurs. In a game arcade where hundreds of game machines are installed, there are cases in which dozens of game machines are determined to be abnormal when the danger rate is set to 5%.

  Thus, although abnormality determination based on a statistical method has been proposed in the past, it has not been put into practical use because inconvenience occurs even if the determination criteria are tightened or sweetened.

  Therefore, an object of the present invention is to provide a management apparatus that can quickly detect an abnormality without causing frequent abnormality determinations.

The first invention relates to a gaming machine management device that collects and manages information related to games from gaming machines that can be given gaming value in relation to the execution result of the game . Of the information related to games collected from the gaming machines , values obtained on the basis of information relating to application of the game value, the abnormality detecting means for detecting an abnormality by judging whether Luke not exceed a predetermined threshold in a predetermined monitoring period, the monitoring period, the first The abnormality detection means detects an abnormality that is beneficial to the game hall by detecting an abnormality that is beneficial to the game hall, and includes a second monitoring period that is shorter than the first monitoring period. Monitoring period changing means for changing the first monitoring period to a second monitoring period, wherein the abnormality detecting means has a value obtained on the basis of information relating to the provision of the gaming value for the game hall. Detecting abnormalities that cause damage In order to detect an anomaly that causes damage to the game hall when the threshold value is larger than the threshold value used for the purpose, and to detect an anomaly that is beneficial to the game hall based on the information relating to the provision of the game value If the threshold value is smaller than the threshold value used for the game, an abnormality that is beneficial to the game hall is detected .

A second invention is a gaming machine management apparatus that collects and manages information about games from gaming machines that can be given gaming value in relation to the execution result of the game , and among the information about games collected from the gaming machines , values obtained on the basis of information relating to application of the game value, the abnormality detecting means for detecting an abnormality by judging whether Luke not exceed a predetermined threshold in a predetermined monitoring period, the monitoring period, the first The abnormality detecting means detects an abnormality that is beneficial to the game hall by detecting an abnormality that is detrimental to the game hall, and includes a second monitoring period that is shorter than the first monitoring period. Monitoring period changing means for changing the first monitoring period to a second monitoring period, wherein the abnormality detecting means has a value obtained on the basis of information relating to the provision of the gaming value for the game hall. Detecting abnormalities that cause damage In order to detect an anomaly that causes damage to the game hall when the threshold value is larger than the threshold value used for the purpose, and to detect an anomaly that is beneficial to the game hall based on the information relating to the provision of the game value If the threshold value is smaller than the threshold value used for the game, an abnormality that is beneficial to the game hall is detected .

  According to a third invention, in the first or second invention, the monitoring period changing means changes the first monitoring period to the second monitoring period until a predetermined period elapses. If no abnormality is detected based on the monitoring period, the second monitoring period is returned to the first monitoring period after the predetermined period has elapsed.

In a fourth aspect based on the first to third aspects, the gaming machine executes an auxiliary game based on the establishment of a start condition, and the auxiliary game derives a specific result mode. A special gaming state that gives value can be generated, and the abnormality detection means stores the number of times of execution of the auxiliary game and the number of times of occurrence of the special gaming state obtained from information related to the game collected from the gaming machine. Comparing the value obtained by calculating the number of occurrences of the special gaming state per predetermined number of executions of the auxiliary game with the threshold value used for detecting an abnormality that causes damage to the game arcade, If the number of occurrences of the special gaming state per predetermined number of executions is excessive, an abnormality that causes damage to the game hall is detected, and the number of occurrences of the special gaming state per predetermined number of executions of the auxiliary game is calculated. Value obtained If the number of occurrences of the special gaming state per predetermined number of executions of the auxiliary game is too small compared to the threshold value used for detecting an abnormality that is beneficial to the game hall, it will be beneficial to the game hall Detect anomalies.

In a fifth aspect based on the first to fourth aspects, the gaming machine executes an auxiliary game based on the establishment of a start condition, and the auxiliary game derives a specific result mode. A special gaming state that gives value can be generated, and the gaming machine management device performs arbitrary execution of the auxiliary game based on a first probability that the special gaming state occurs every time the auxiliary game is executed. An expected value of occurrence of the special gaming state per number of times is calculated, and a second probability that the special gaming state is generated a predetermined number of times during an arbitrary number of executions of the auxiliary game is calculated based on the expected value. Threshold value setting means for setting the predetermined number of occurrences of the special gaming state as a threshold value based on the second probability is provided.

In a sixth aspect based on the first to fourth aspects, the gaming machine executes an auxiliary game based on the establishment of a start condition, and the auxiliary game derives a specific result mode. A special gaming state that gives value can be generated, and the gaming machine management device sets a probability that the special gaming state is generated a predetermined number of times during an arbitrary number of executions of the auxiliary game to a predetermined value An abnormality determination reference value calculation means for calculating an abnormality determination reference value for each occurrence of the special gaming state, and an abnormality determination reference for storing the abnormality determination reference value calculated by the abnormality determination reference value calculation means The abnormality determination monitoring period is based on the value storage means, the abnormality determination reference value stored by the abnormality determination reference value storage means, and the probability of occurrence of the special gaming state every time the auxiliary game is executed. Auxiliary play Monitoring period calculation means for calculating the number of executions of the game, and threshold setting means for setting a predetermined number of occurrences of the special gaming state in the predetermined number of executions of the auxiliary game calculated by the monitoring period calculation means as a threshold value .

According to a seventh invention, in the first to sixth inventions, the gaming machine executes an auxiliary game based on establishment of a start condition, and the auxiliary game derives a specific result mode. It is possible to generate a special gaming state that gives value, and to generate a normal gaming state and a high probability gaming state in which the probability of occurrence of the special gaming state is a predetermined multiple higher than the normal gaming state, The gaming machine management device includes execution result storage means for storing a result of execution of the auxiliary game, and when the gaming machine is in the normal gaming state, one execution result storage means for each execution of the auxiliary game. to ensure stores the result of execution of the execution result storage unit the auxiliary game in which the said securing, when the gaming machine is the high probability gaming state, the predetermined multiple of each execution of the auxiliary game Secure the execution result storage means Te stores a result of an execution of the auxiliary game of the execution result storage means for the securing, to record a running the auxiliary game in each of the other execution result storage means for the securing, the reserved The execution result storage means is obtained as the number of times of execution of the auxiliary game, and a value obtained based on the number of occurrences of the special gaming state per predetermined number of times of execution of the auxiliary game stored in the execution result storage means An abnormality is detected by comparing with the threshold value.

  According to the first aspect of the present invention, the first monitoring period used for detecting the abnormality that is detrimental to the game hall is detected earlier than the first threshold by detecting the abnormality that is beneficial to the game hall. By changing to the second monitoring period in which an abnormality can be detected at the time, the monitoring target is narrowed down to gaming machines that have detected an abnormal state that would be beneficial to the game arcade, and the monitoring period is limited only to the target gaming machine. By monitoring the occurrence of an abnormal state that causes damage to the game hall by shortening the time, it is possible to quickly detect an abnormality without frequent occurrence of abnormality determination.

  According to the second aspect of the present invention, the first monitoring period used for detecting the abnormality that is beneficial to the game hall is detected earlier than the first threshold by detecting the abnormality that causes damage to the game hall. By changing to the second monitoring period in which an abnormality can be detected at the time, the monitoring target is narrowed down to gaming machines that have detected an abnormal state that would cause damage to the game arcade, and the monitoring period is limited only to the target gaming machine. By monitoring the occurrence of an abnormal state that is beneficial to the game hall by shortening the time, it is possible to quickly detect an abnormality without frequent occurrence of an abnormality determination.

  According to the third invention, when no abnormality is detected based on the second monitoring period before the predetermined period elapses after the first monitoring period is changed to the second monitoring period, By returning the second monitoring period to the first monitoring period after the lapse of the predetermined period, the number of gaming machines monitored according to a strict criterion is increased in the game hall, thereby preventing frequent abnormality determinations.

  According to the fourth aspect of the present invention, the value obtained by calculating the number of occurrences of the special gaming state per predetermined number of executions of the auxiliary game is compared with a predetermined threshold value to detect an abnormality, so that the game can be executed. Accordingly, it is possible to detect abnormality of the gaming machine in real time.

  According to the fifth aspect of the present invention, an expected value at which a special gaming state is generated per arbitrary number of trials of an auxiliary game is calculated based on a first probability that a special gaming state is generated at each trial of the auxiliary game. Based on the value, a second probability that a predetermined number of special gaming states occur during an arbitrary number of trials of the auxiliary game is calculated, and the number of occurrences of the predetermined special gaming state calculated based on the second probability is calculated. By setting the threshold value, it is possible to easily calculate the special prize occurrence probability using a predetermined probability distribution (for example, Poisson distribution or binomial distribution), and thus the threshold value can be easily set.

  According to the sixth invention, when the probability that a predetermined number of special game states will occur during an arbitrary number of trials of the auxiliary game is set to a predetermined value, the reference value for abnormality determination for each occurrence of the special game state Replacing the gaming machine by setting a threshold based on the means for calculating the abnormality, the means for storing the abnormality determination reference value, and the abnormality determination reference value and the probability of occurrence of a special gaming state for each trial of the auxiliary game Even if the performance of the gaming machine before and after the replacement (probability of occurrence of a special gaming state) differs, abnormality can be determined based on a pre-calculated general abnormality determination reference value.

  According to the seventh invention, one execution result storage means is secured in the normal gaming state, and the execution result of the auxiliary game is stored in the execution result storage means, and the execution result for a predetermined multiple in the high probability gaming state. The storage means is secured, the result of execution of the auxiliary game is stored in one of the execution result storage means, and the obtained effective result storage means is obtained as the number of times of execution of the auxiliary game. Since it is possible to handle the game state and the probability variation state in a unified manner without distinguishing the determination criteria for abnormality determination, it is possible to easily implement abnormality determination. In addition, since these states are not separated and the abnormality is determined collectively, information necessary for the determination is gathered quickly, and rapid abnormality detection can be performed.

  Embodiments of the present invention will be described below.

  FIG. 1 is a system configuration diagram of the gaming system according to the first embodiment of this invention.

  An internal network is provided inside the game hall shown in FIG. 1, and a game hall internal management device (hall computer) 1 and a relay device (router) 2 are connected to the internal network.

  The internal network provided in the amusement hall is configured by, for example, Ethernet (registered trademark, the same applies hereinafter). Addresses are set for devices connected to the internal network, and communication between devices (for example, transfer of data to specific devices and transmission of command signals) and broadcast communication to a plurality of devices (for example, multicast) Or broadcast).

  The game hall internal management device 1 collects game information from the game device 4 and monitors the operating state of each gaming machine 4a (FIG. 4).

  The relay device 2 is provided for each island facility in the game hall, relays information from the information collection terminal device 3 installed in the island facility, and transmits the information to the internal network. The installation of the relay device 2 is not limited to each island facility, and may be performed on each floor or on each predetermined block.

  The information collecting terminal device 3 is connected to each gaming device 4 including peripheral devices such as a gaming machine 4 a and an out tank 4 d (FIG. 4) provided in each gaming machine 4 a, and is output from the gaming device 4. Collect game information. Note that a configuration in which one information collection terminal device 3 is connected to a plurality of (for example, two) gaming devices 4 may be employed.

  When the information collection terminal device 3 collects the game information output from the game device 4, the accumulated value of the game information for a predetermined period (for example, the number of occurrences of the special prize calculated based on the special prize signal output from the gaming machine 4a) And the accumulated value of the game information is transmitted to the game hall internal management device 1. The accumulated value of the game information for a predetermined period generated by the information collecting terminal device 3 is normally accumulated for each business unit.

  Here, the business unit means from the start of the day to the end of the business, which starts earlier than the opening time and ends later than the closing time. Note that the business hours of the day may be divided into morning, afternoon, etc., and a plurality of business units may be set for the day. In addition, the business unit may be a plurality of days (for example, one week).

  A plurality of game apparatuses 4 are installed in the island facility, and a ball rental unit 4b, a supply tank 4c, and an out tank 4d are added to the game machine 4a (FIG. 4).

  In the first embodiment, the relay device 2 that relays information from the information collection terminal device 3 is provided for each island facility, but the information collection terminal device 3 is directly connected to the internal network without providing the relay device 2. You may comprise. In addition, a remote IO may be placed instead of the information collecting terminal device 3, and the information collecting terminal device 3 corresponding to a plurality of gaming devices 4 may be installed instead of the relay device 2. By configuring in this way, it is possible to deal with a game system using a method conventionally called an island computer.

  FIG. 2 is a block diagram showing a configuration of the game hall internal management device 1 according to the first embodiment of this invention.

  The game hall internal management device 1 includes a CPU 101, a ROM 102 that stores programs in advance, a RAM 103 that is a memory used as a work area when the CPU is operating, a hard disk that stores various data, a nonvolatile memory (flash memory, etc.), and the like. A storage device 105 is provided. The RAM 103 stores game information transmitted by the information collection terminal device 3. These CPU 101, ROM 102, RAM 103 and storage device 105 are connected by a bus 104. The bus 104 includes an address bus and a data bus that the CPU 101 uses for reading and writing data.

  Connected to the bus 104 are a network communication port 106, an I / O port 107, and an external network communication port 108 that control input / output with the outside. The network communication port 106 is a data input / output unit for performing data communication according to a predetermined communication protocol, and is connected to an internal network. The I / O port 107 has a display for displaying data collected from the gaming device 4 and an operating state of the game hall internal management device 1, or a speaker for notifying that an illegal act is being performed in the gaming machine 4a. Is connected to the output device 109.

  In addition, a setting input device (keyboard, mouse, etc.) 110 for operating the game hall internal management device 1 is connected to the I / O port 107. Using this setting input device 110, various determination criteria (FIG. 10) described later are input and set.

  The external network communication port 108 is a data input / output unit for performing data communication according to a predetermined communication protocol, and is connected to an external network provided outside the game arcade. Therefore, the game hall internal management device 1 can communicate with devices outside the game hall connected to the external network.

  FIG. 3 shows a configuration of the microprocessor 300 provided in the information collection terminal device 3 according to the first embodiment of this invention. The information collection terminal device 3 is provided with a microprocessor 300, a power supply circuit, and a data input / output terminal.

  The microprocessor 300 is a one-chip type processor incorporating three CPUs 301 to 303, and incorporates three CPUs: a media access control CPU (MAC CPU) 301, a network CPU 302, and an application CPU 303. Further, a RAM 305, an EEPROM 306, and a ROM 307 are connected to the common bus 304 for addresses and data to which the CPUs 301 to 303 are connected, as memories commonly used by the CPUs. A RAM 305 is a memory used as a work area when the CPU executes a program. The EEPROM 306 is a non-volatile memory. The ROM 307 stores programs and the like in advance.

  The common bus 304 is also connected to a network communication port 308 and an I / O port 309 that control input / output with the outside.

  The EEPROM 306 is a non-volatile memory, and stores information set in the information collection terminal device 3 such as network configuration and address designation information, identification code, and the like. A program used for collecting game information is stored in an area rewritable by the program of the EEPROM 306 and the ROM 307.

  The network communication port 308 is a port for performing data communication according to a predetermined communication protocol. The network communication port 308 is connected to a network connection terminal via a driver, and the relay device 2 is connected to the network connection terminal to transmit / receive a signal (data signal, command signal) to / from the game hall internal management device 1. .

  The I / O port 309 is a parallel or serial input / output port, and is connected to an external input / output terminal via a driver. The external input / output terminal has a special prize signal output from the gaming machine 4a, a probability change, and the like. Data such as a signal, a start signal, a prize ball signal, a replenishment signal output from the peripheral device 312 (replenishment tank 4c, out tank 4d), a recovery ball signal, and the like (FIG. 4) are input. The special prize signal, the probability variation signal, the start signal, and the prize ball signal are received by directly communicating with the communication port 310 and the gaming microcomputer 401 (FIG. 5) provided in the gaming control device of the gaming machine 4a. You can also.

  The communication port 310 is a communication port that communicates with a communication port of the gaming microcomputer 401 provided in the gaming machine 4a according to a predetermined protocol, and a connector provided on the gaming control board of the gaming machine 4a. It is connected.

  The processor also includes a control circuit 311 that outputs control signals such as clocks and resets for the CPUs 301 to 303.

  When game information is input from the game device 4 to the information collecting terminal device 3, the application CPU 303 calculates the accumulated value of the game information. Further, the accumulated value of the calculated game information is output from the network communication port 308. The accumulated value of the game information output from the network communication port 308 is managed by the game hall internal management device 1.

  FIG. 4 is a block diagram of the periphery of the gaming machine 4a according to the first embodiment of this invention, and shows game information output by the gaming apparatus 4.

  A game-related signal (game information) is output from the board external information 60 (FIG. 5) provided in the gaming machine 4a to the I / O port 309 of the microprocessor 300 of the information collecting terminal device 3. The gaming microcomputer 401 (FIG. 5) of the gaming control device 400 included in the gaming machine 4a includes a gaming control block that performs gaming control, and a management block that performs security check and game information output. The information related to the gaming machine 4a and game information are transmitted to an external device (for example, the information collecting terminal device 3 or the security inspection device) connected via the external communication terminal 404 (FIG. 5) provided on the game control board. Output.

  The gaming machine 4a, when a game ball wins a start winning opening (start opening), a general winning opening, and a special variable winning apparatus (large winning opening), discharges a number of winning balls according to the type of the winning winning opening. To the supply tray provided below the game board. Each time a predetermined number of prize balls are discharged, a “prize ball signal” (for example, 10 pulse signals of one pulse) is output as game information.

  In addition, when the variable display game (auxiliary game) is started by winning a game ball at the start opening, the gaming machine 4a outputs a “start signal” as game information every time the variable display game is started.

  In addition, when the result of the variable display game is a special game state (a jackpot game), the gaming machine 4a outputs a “special prize signal (a jackpot signal)” as game information during the special game state.

  In addition, when the special game state is a special game with a probability variation pattern, the gaming machine 4a provides a “probability variation signal” during the special game state and a specific game state (probability variation state) that occurs thereafter. Output as.

  In addition, the signal (game information) output from the board external information 60 of the gaming machine 4a indicates that there is a shortage of prize balls in the upper tank and prompts the player to supply balls from the island facility. Signal ", a" ball lending signal "that is output every time a predetermined number (for example, 25) of gaming balls are lent, and a" symbol confirmation signal "that is output when the variable display game ends. These signals are output from the board external information 60 in a voltage output format or a contact output format.

  Information relating to the gaming machine 4a is output from the gaming microcomputer 401 of the gaming machine 4a to the communication port 310 of the microprocessor 300 of the information collecting terminal device 3 through communication. In the information related to the gaming machine 4a, a chip ID (unique information) included in the gaming microcomputer as information unique to the gaming machine 4a, a manufacturer code for specifying the manufacturer of the gaming machine 4a, and a model of the gaming machine 4a are specified. There are a model code, a security code (for example, a hash value of the program code) for confirming the validity of the program.

  When a signal related to the above-described game (game information) is output from the gaming microcomputer 401 to the communication port 310, the communication content is concealed by data communication (for example, encrypted communication) using a predetermined protocol. Thus, it is possible to output more detailed game information (for example, the starting memory number or the extracted random number value) than that output from the board external information 60. Further, the ID of the connection partner can be authenticated by bidirectional communication, and connection with an unauthorized device can be prevented.

  When the ball lending unit 4b is a cash sand, a “sales signal” relating to the sales at the time of ball lending is output. In addition, the “sales signal” from the cash sand may output information on the number of rental balls corresponding to the sales amount in addition to the information on the sales amount.

  The information collecting terminal device 3 that has received these signals adds these game information, adds up the accumulated values, and transmits the accumulated values of the game information toward the internal network. This accumulated value is transmitted, for example, at an elapse of a predetermined time, at an event such as occurrence of a special gaming state, or at a polling response from the game hall internal management device 1.

  In addition, the island facility where the gaming machine 4a is installed includes a replenishment path (supplementing unit) for supplying gaming balls (award balls, rental balls) to the gaming machine 4a and cash sand (ball lending device), and a gaming machine 4a. A supply and recovery mechanism (a supply tank 4c and an out tank 4d) including a recovery path (collection unit) for recovering the out ball is provided. The replenishment tank 4c has a replenishment number counting unit that counts the number of replenished balls, and the out tank 4d has a recovered ball counting unit that counts the number of outballs. The replenishment tank (replenishment number counting unit) 4c outputs a “replenishment signal” (for example, 10 pulse signals of 1 pulse), which is a result of counting the replenishment balls, as game information. The out tank (recovered ball counting unit) 4d outputs a “recovered ball signal” (for example, 10 pulse signals of 1 pulse) as game information, which is the result of counting out balls. The replenishment tank 4c and the out tank 4d are connected to the information collecting terminal device 3, and the information collecting terminal device 3 adds and calculates the game information output from the replenishing tank 4c and the out tank 4d, and totals the accumulated values. Then, the accumulated value of the game information is transmitted to the internal network.

  The information collecting terminal device 3 may collect the collected ball signal, the replenishment signal, and the sales signal directly from the gaming machine 4a.

  FIG. 5 is a block diagram showing a part of a control system centering on the game control device 400 of the gaming machine 4a according to the first embodiment of the present invention.

  The game control device 400 is a main control device that controls the game in an integrated manner, a CPU that controls the game control, a ROM that stores invariant information (programs, data, etc.) for game control, and a work at the time of game control The game microcomputer 401 includes a RAM used as an area, an input interface 402, an output interface 403, an external communication terminal 404, and the like.

  The gaming microcomputer 401 includes various detection devices (special symbol start sensors 51.1 and 51.2, count sensors 52.1 and 52.2, normal symbol start sensor 53, and general prize opening sensor via the input interface 402. In response to the detection signals from 54.1 and 54.2), various processes such as jackpot lottery are performed. Then, through the output interface 403, a command signal is transmitted to each subordinate control device (discharge control device 410, display control device 420), the normal electric accessory solenoid 16A, the big prize opening solenoids 12A, 13A, etc. Control all over.

  The gaming microcomputer 401 is provided with an external communication terminal 404, and an identification number uniquely set in the gaming microcomputer 401 can be output from the external communication terminal 404. By connecting the inspection device or the game hall internal management device 1 to the terminal 404, the game hall internal management device 1 can identify the gaming machine 4a.

  In addition, the gaming microcomputer 401 outputs information related to the gaming machine 4 a to the game hall internal management device 1 via the board external information terminal 60.

  Further, the gaming microcomputer 401 outputs the variation display mode of the special symbol variation display game to the special symbol display 20A. Further, the special symbol winning memory number display is output to the special symbol memory display 20B.

  Further, the gaming microcomputer 401 outputs the variation display mode of the normal symbol variation display game to the ordinary symbol display 21A. Also, the normal symbol winning memory number display is output to the normal symbol memory display 21B.

  A special figure change start command, a change display command, an identification information command, a confirmation command, a demo display command, a fanfare command, a jackpot command, an error command, etc. are transmitted from the game control device 400 to the display control device 420 as display control command signals. The Further, a command signal for changing the display mode according to a difference in the gaming state such as the normal gaming state, the special gaming state, the specific gaming state (probability variation state), or the variation time reduction state is also transmitted.

  The special figure change start command described above instructs the start of the change display game. The variation display command indicates a variation display mode of the identification information. The identification information command indicates identification information to be stopped and displayed as a result of the variable display game. The confirmation command instructs the stop of the variation display of the identification information. The demonstration display command instructs display performed when the variable display game is not played for a predetermined time. The fanfare command instructs display of the state before the transition to the special gaming state. The jackpot command instructs a display during a special game state such as a round display during a special game state, an interval display, or a display between rounds during a special game state. The error command instructs display when there is an abnormality.

  The display control device 420 can grasp the transition of the game state managed by the game control device 400 based on these display control command signals (commands).

  The special symbols that are variably displayed by the control of the display control device 420 correspond to the special symbols that are variably displayed by the game control device 400, thereby providing a variety of display effects and enhancing the interest. Note that the special symbol may be variably displayed by the display control device 420.

  The discharge control device 410 controls the operation of the payout unit based on the prize ball command signal from the game control device 400 to discharge the prize ball. Further, based on the ball rental request signal from the ball rental unit 4b, the operation of the payout unit is controlled to discharge the ball rental.

  The sound control device 430 controls the sound effect output from the speaker 70 based on the sound control command signal from the display control device 420.

  The decoration control device 440 controls a decoration light emitting device such as a decoration lamp or LED 80 (decoration lamp in the center case, decoration lamp around the big prize opening, etc.) based on the decoration control command signal from the display control device 420. .

  The variable display device 90 displays an image corresponding to the display area based on the image display signal from the display control device 420.

  The connection interface between the display control device 420 and the game control device 400 is provided with a buffer serving as a signal transmission direction restricting means, and communication between the game control device 400 and the display control device 420 is performed from the game control device 400. Only signal input to the display control device 420 is allowed, and signal output from the display control device 420 to the game control device 400 is prohibited. Thereby, it is possible to prevent an unauthorized signal from being input to the game control device 400 from the display control device 420. In the case where bidirectional communication is performed between the game control device 400 and the display control device 420, a bidirectional buffer can be used for the buffer circuit.

  The power supply device (not shown) of the gaming machine 4a includes a backup power supply unit and a power failure monitoring circuit in addition to the power supply circuit. When the power failure monitoring circuit detects a voltage drop of the power supply device, the power failure monitoring circuit sequentially outputs a power failure detection signal and a reset signal to the game control device 400 and the like. When the game control device 400 receives a power failure detection signal, the game control device 400 performs a predetermined power failure process, and when it receives a reset signal, stops the operation of the CPU. The backup power supply unit supplies backup power to the RAM of the game control device 400 or the like to back up game data (including game information and game control information: including variable display game information).

  FIG. 6 is a timing diagram of game information output from the board external information 60 of the gaming machine 4a in the first embodiment of the present invention.

  The “special award signal” is output during a special game state (a jackpot game). Based on the start time and end time of the output of the signal, the special prize signal can calculate the special prize time (time when the special game is executed) of the gaming machine 4a.

  The “probability change signal” is output during a special game state with a probability change symbol and during a specific game state (probability change state). The special game state based on the probability variation design means a state in which a big hit that generates a probability fluctuation state occurs as a result of the variable display game, and the special game (big hit game) is executed. That is, the three special symbols that are variably displayed on the screen of the variable display device 90 are generated by stopping at a special game combination (for example, odd numbers) of probability variation symbols.

  After the special game is executed and the special game state is ended, a probability variation state (a specific game state that favors the player with respect to the occurrence of the special game state) is generated in which the probability of occurrence of the special prize is higher than usual. During the probability fluctuation state, the normal symbol change display time is shorter than normal (for example, shortened from 30 seconds to 5 seconds), and when the normal symbol is a hit, the normal variable winning device opening time is normal. (For example, it is extended from 0.5 seconds to 3 seconds, or is repeatedly opened several times). Therefore, the probability of winning at the start port is higher during the probability variation state than during the normal gaming state, and the number of special symbol winning memories can be increased as compared to during the normal gaming state.

  Note that the “special award signal” and the “probability change signal” are both signals indicating the gaming state, and thus are always output during the corresponding gaming state.

  The “start signal” is output at the time of starting the variable display game executed by winning a game ball at the start opening. Note that when a game ball wins the starting opening during the special game state, the number of winning balls is stored as a special symbol winning memory number, so that the variable display game is not immediately executed. Therefore, the start signal is not output during the special game state.

  Next, the output state of these signals during each gaming state will be described.

  First, a game ball is launched into the game area, and when a variable display game is started by winning a game ball at the start opening, a start signal is output. The start signal is output every time the variable display game starts during the normal gaming state. Note that the normal game state is a state in which no special game is executed. Until a special gaming state occurs as a result of the variable display game, the gaming machine 4a plays a game in the normal gaming state. In this state, neither the special prize signal nor the probability variation signal is output.

  When the result of the variable display game is a big hit, a special game is executed in the gaming machine 4a and a game is played in the special game state. At this time, if the result of the variation display game is a special game state with a probability variation symbol, both a special prize signal and a probability variation signal are output.

  Then, when the special game of the specified round is executed and the special game state is finished, the game machine 4a plays a game in a specific game state in which the occurrence probability of the special prize is higher than usual. In this state, the special prize signal is not output, but the probability variation signal is continuously output. Then, each time the game ball wins the starting opening, the variable display game is executed, and a start signal is output each time the variable display game is started.

  When the result of the variable display game in the specific game state is a big hit, the special game is executed in the gaming machine 4a and the special game is performed. At this time, if the result of the variable display game is a special game state with a normal symbol, the special prize signal is output, but the probability variation signal is not output.

  Then, when the special game of the specified round is executed and the special game state is ended, the game is performed in the normal game state in the gaming machine 4a. In this state, neither the special prize signal nor the probability variation signal is output. However, each time a game ball wins a starting opening, a variation display game is executed, and a start signal is output each time the variation display game is started.

  As described above, in the gaming machine 4a, when the launch of the game ball to the game area is started, the normal game state (a special game is not executed), the special game state (a special game is executed) Alternatively, a game is played in any state of the specific game state (probability variation state), and each signal is output from the gaming machine 4a according to the game state.

  FIG. 7 shows a temporal change in the special occurrence frequency based on the game information output by the gaming machine 4a according to the first embodiment of the present invention.

  In FIG. 7, the horizontal axis represents the number of executions of the variable display game (start number), and the vertical axis represents the number of occurrences of the special gaming state (special prize number). Each time the information collection terminal device 3 receives a start signal and a special prize signal from the gaming machine 4a, the information collecting terminal device 3 cumulatively adds the start number and the special prize number and records a special prize occurrence history. Then, as shown in FIG. 7, the number of special prizes per start number of the variable display game, that is, the special prize occurrence frequency is calculated.

  A line An (n is an arbitrary integer) indicates the special occurrence frequency per predetermined start number of the variable display game during the monitoring period with a slope. When the information collection terminal device 3 receives the special prize signal, that is, when a special prize is generated as a result of the variable display game, the special prize is generated during the monitoring period (the number of times the predetermined variable display game has been executed in the past). The number of times is counted, and the resulting special prize occurrence frequency is indicated by a change in the slope of the line An. The line An is updated from line A1 to line A2, line A3,... Each time a special prize is generated, and indicates the frequency of occurrence of the special prize during each monitoring period as a slope. Each time a special prize is generated, it is determined whether or not an abnormality has occurred based on the special prize occurrence frequency using the calculated line An.

T _A n (n is an arbitrary integer) indicates the monitoring period of each line An. The monitoring period is set in advance by a monitoring period generation process (FIG. 9) described later. The monitoring period varies depending on the abnormal state to be detected (special prize sparse state, special prize dense state A, or special prize dense state B). Here, as a monitoring period for detecting the special prize dense state A, a time period during which the variable display game corresponding to three times the reciprocal of the special prize occurrence probability p is started (executed) is set. That is, when the special prize occurrence probability p is 1/300, the monitoring period goes back to the past from the time of abnormality determination, and is 900 times of a variable display game as a game history. The monitoring period is not limited to three times the reciprocal of the special prize occurrence probability p, but is a period in which the start count of the variable display game capable of detecting an abnormality based on the set abnormality determination criterion can be secured.

  The special prize occurrence probability p is a probability of occurrence of a special gaming state per one variation display game. 0 <p <1, and usually a few tenths to a few hundredths (for example, 1/300 or 1/400). The award occurrence probability p is set in the game hall internal management device 1 in accordance with a numerical value predetermined for each gaming machine 4a.

  A line C indicates an inclination serving as a criterion for determining the special prize dense state. The special prize dense state refers to a state in which an abnormal game (illegal act) is performed in which the special prize occurrence probability p per start number is extremely high and causes damage to the game hall. As described above, by detecting an abnormal gaming state that causes damage to the game hall, it is possible to detect a state in which a malicious fraudster is playing a game.

When the slope of the line An exceeds the slope of the line C, the special prize occurrence frequency is excessive, and the gaming machine 4a can determine that the special prize dense state A is present. Here, since the slope of the line A6 exceeds the slope of the line C, the special occurrence frequency of the monitoring period T _A of the line A6 (during execution of the variable display game of the past 900 times from the special prize occurrence time indicated by a) is increased. It can be determined that there is an excess. Therefore, it can be determined that an illegal act causing damage to the game hall is being performed at the time of occurrence of the special prize indicated by a, and the alarm A is notified.

  A line D indicates an inclination serving as a criterion for determining the special prize sparse state. The special prize sparse state is a state in which an abnormal game is performed in which a special prize occurrence probability p per start number is extremely low, which is beneficial to the game hall. In this way, by detecting an abnormal gaming state that would be beneficial to the game hall, a state in which a bona fide player is playing a game machine that has been illegally operated by a malicious fraudster. Can be detected.

  When the slope of the line An falls below the slope of the line D, the special prize occurrence frequency is too low, and the gaming machine 4a can be determined to be in the special prize sparse state. That is, when the slope of the line An falls within the slope of the line C and the slope of the line D, the normal gaming state, when the slope of the line An exceeds the slope of the line C, the special prize dense state, the slope of the line An Is less than the slope of the line D, it can be determined that the special prize sparse state.

  FIG. 8 shows temporal changes in the monitoring period used for abnormality determination according to the first embodiment of this invention. Note that the same reference numerals as those used in FIG. 7 indicate the same contents as those in FIG.

  Every time a game is started and a special prize is generated in the gaming machine 4a, it is determined whether or not a special dense state has occurred in a predetermined monitoring period from the time when the special prize is generated. Further, every time a variable display game is started on the gaming machine 4a, it is determined whether or not a special sparse state has occurred in a predetermined monitoring period from the start of the variable display game. FIG. 8 shows a case where a special prize sparse state is detected at the start of the variable display game indicated by c.

When the special prize sparse state is detected, the monitoring period for detecting the special prize dense state after the detection time is changed. In other words, the monitoring period T _A 1 line A1 is set between a period for detecting the prize-tight state A, the prize generation time indicated by the end point of the line A1, the variation display game last 900 times is performed Has been. Meanwhile, after the prize sparse state is detected at the start time of the variable display game shown by c, the monitoring period T _B 1 to T _B 4 lines B1~ line B4 as a period for detecting the prize-tight state B The game is changed while the past variation display game is executed for the number of times corresponding to the reciprocal of the special prize occurrence probability p from the special prize occurrence time indicated by the end point of each line Bn. When the special prize occurrence probability p is 1/300, the monitoring period T _B n is during the past 300 times that the variable display game is executed after the special prize indicated by the end point of the corresponding line Bn is generated.

  When the slope of the line Bn exceeds the slope of the line C, the special prize occurrence frequency is excessive, and the gaming machine 4a can determine that the special prize dense state B exists. Here, since the slope of the line B4 exceeds the slope of the line C, the frequency of occurrence of the special prize is excessive during the monitoring period of the line B4 (during the execution of the past 300 fluctuation display games from the time of the special prize occurrence indicated by b). It can be judged that there is. Therefore, it can be determined that an illegal act that causes damage to the game hall is performed at the time of occurrence of the special prize indicated by b, and the alarm B is notified.

  The determination criterion indicated by the line Bn is set to have a shorter monitoring period than the determination criterion indicated by the line An. Therefore, even if the player who performs the fraudulent act is playing the same game, the determination criterion indicated by the line An The alarm is notified earlier when the determination is based on the criterion indicated by the line Bn in comparison with. In other words, since the judgment is made based on strict judgment criteria, the time when the abnormality is discovered is early. However, if it is determined in advance based on the criteria indicated by the line Bn, it is determined that the special prize is in a dense state until the occurrence frequency of the special prize is accidentally high when the number of start of the variable display game is small. The probability of determining that the gaming machine 4a that has not been cheating is also abnormal increases. In the present invention, for only the gaming machine 4a determined to be in the special prize sparse state, the judgment performance is improved by judging the special prize dense state on the basis of the line Bn, and the detection time of the fraudulent act is accelerated. can do.

  FIG. 9 is a flowchart of monitoring period generation processing and monitoring period setting processing according to the first embodiment of this invention.

  In determining the special prize sparse state and the special prize dense state, the game hall internal management device 1 performs a process of creating a monitoring period table (FIG. 10E) used as a threshold value in the determination (S1 to S3). .

  First, the game hall internal management device 1 uses the setting input device 110 to set and input the gaming machine information of each gaming machine 4a in the RAM 103 in advance (S1). As the gaming machine information, for example, each game machine 4a has a special prize occurrence probability p (a special gaming state lottery probability in a normal gaming state or a special gaming state lottery probability in a probability variation state), a probability variable multiple, a special prize occurrence probability p. The information for specifying the manufacturer name, model name, manufacturer code, model code, or chip ID of each gaming machine 4a. Note that the probability variation multiple is a value (for example, 5 (times)) obtained by dividing the special prize occurrence probability in the probability variation state by the special occurrence probability in the normal gaming state.

  Then, determination criteria for the special prize sparse state and the special prize dense state (FIG. 10A) are set and input to the RAM 103 in advance (S2). In the first embodiment, the determination criterion for the special prize sparse state is set to 5%, and the determination criterion for the special prize dense state is set to 3%. However, the determination criterion to be set is not limited to these values.

  Then, based on the values set in steps S1 and S2, the CPU 101 calculates a monitoring period and a determination value serving as a threshold for determining an abnormality, and creates a monitoring period table (FIG. 10E) ( S3).

  The monitoring period is a period in which the number of start times of the variable display game that can detect an abnormality based on the set abnormality determination standard can be secured. For example, while the variable display game is executed 1500 times in the determination of the special prize sparse state, the variable display game is executed 900 times in the determination of the special prize dense state A, or in the determination of the special prize dense state B. Set to be executed 300 times.

  At this time, if the special event occurrence probability p of the gaming machine 4a is 1/300, 1500 times is divided by the reciprocal of the special event occurrence probability p in the special period sparse monitoring period of the monitoring period table (FIG. 10E). Is recorded as 5. Similarly, the monitoring period of the special prize dense state A is recorded as 3, and the monitoring period of the special prize dense state B is recorded as 1. In this way, the monitoring period is recorded by a value obtained by dividing the start number of the variable display game to be set by the reciprocal number of the special prize occurrence probability value p, thereby monitoring corresponding to each gaming machine 4a having a different special prize occurrence probability p. The period can be easily calculated. That is, by multiplying the numerical value recorded as the monitoring period by the reciprocal of the special prize occurrence probability p, it is possible to calculate the number of executions of the variable display game that becomes the monitoring period corresponding to each gaming machine 4a.

  The method for calculating the judgment value is as follows.

  In the target gaming machine 4a, assuming that the number of trials of the variable display game is n (times), the average number of special prizes of λ (times) = n × p is obtained with n start times. This λ can be said to be the number of occurrences of a special prize expected with n start times, that is, an expected value.

In general, the prize occurrence probability p of the gaming machine 4a is one-tenth to one-hundredth, and the value of p is extremely small, whereas the value of n is easily large (for example, for 2000 yen) In ball lending, the variable display game can be executed approximately 50 times), so the Poisson distribution can be used. That is, the probability distribution (Poisson distribution) in which a special prize of X (times) occurs at the start number n (times) is expressed by the formula P (X) = e ^−λ λ ^X / X! Can be calculated. Thus, by obtaining the distribution of the special prize occurrence probability as a Poisson distribution, the distribution can be easily calculated.

If application to the Poisson distribution is difficult, a binomial distribution may be used. The binomial distribution can be calculated by the equation P (X) = _n C _x p ^x (1−p) ^nx .

  The Poisson distribution of X = 0 to 7 when λ = 1 is used as a value for determining the special prize dense state B is a value shown in FIG. The values shown in FIG. 10B are calculated by the CPU 101 of the game hall internal management device 1 based on the prize occurrence probability p and the value of λ, and stored in the RAM 103.

  Similarly, FIG. 10C shows a Poisson distribution of X = 0 to 7 when λ = 3 as a value for determining the special prize dense state A, and λ = 5 as a value for determining the special prize sparse state. FIG. 10D shows a Poisson distribution with X = 0 to 7 in the case of the above.

  Λ used for determination of each state is a value corresponding to the monitoring period. That is, since the monitoring period of the special prize sparse state is set to 1, a table of Poisson distribution when λ = 1 is used. In addition, since the monitoring period of the special prize dense state A is set to 3 and the monitoring period of the special prize sparse state is set to 5, a table of Poisson distribution when λ = 3 and 5 is used, respectively.

  When the value shown in FIG. 10D is compared with the criteria for the special sparse state determination value shown in FIG. 10A, the special prize is obtained when the number of special prizes is one or less during the special sparse state monitoring period. It turns out that it will be in the state below 5% of criteria for a sparse state. Accordingly, FIG. 10E shows the number of occurrences 1 of the special prize at the number of times of execution of the variable display game corresponding to 5 times the reciprocal of the special prize occurrence probability p (1500 if the special prize occurrence probability p is 1/300). It is set as a special prize sparse state determination value (threshold value).

  Similarly, when the value shown in FIG. 10C is compared with the criterion for the special prize dense state judgment value shown in FIG. 10A, the number of special prizes exceeds seven during the monitoring period of the special prize dense state A. It can be seen that this is a state that is less than 3% of the criterion of the special prize dense state A. Therefore, the number 3 of the variable display game executions corresponding to three times the reciprocal number of the special prize occurrence probability p (900 if the special prize occurrence probability p is 1/300) is 3 in FIG. 10E. It is set as the special prize dense state determination value B (threshold value) shown.

  Further, when the value shown in FIG. 10B is compared with the criterion of the special prize state determination value shown in FIG. 10A, the number of special prizes exceeds three during the monitoring period of the special prize state B. It can be seen that this is a state that is below 3% of the criterion of the special prize dense state B. Therefore, the number 3 of the special prize occurrences in the number of executions of the variable display game corresponding to the reciprocal of the special prize occurrence probability p (300 if the special prize occurrence probability p is 1/300) is shown in FIG. 10 (E). Set as state determination value B (threshold).

  The game hall internal management device 1 notifies the information collection terminal device 3 of the monitoring period table created based on the values obtained in this way (S4).

  The information collection terminal device 3 that has received the monitoring period table from the game hall internal management device 1 performs monitoring period setting processing (S5 to S7).

  The information collection terminal device 3 sets the monitoring period table received from the game hall internal management device 2 in the RAM 305 in order to use it as a criterion for determining the special prize sparse state and the special prize dense state (S5). Then, based on the information set in the monitoring period table, the monitoring period of the special prize sparse state is set to 5 (the number of times the variable display game is executed 1500 times), and the determination value is set to 1 (time) (S6), The monitoring period of the state determination value A is set to 3 (the number of times the variable display game is executed 900 times), and the determination value is set to 7 (times) (S7).

  The information collecting terminal device 3 determines the special prize sparse state and the special prize dense state based on the special sparse state monitoring period, the judgment value, the special prize dense state A monitoring period, and the judgment value set as described above. It detects (FIGS. 12 and 15).

  FIG. 11 is a flowchart of the special sparse state monitoring process, special sparse state acceptance process, and special sparse state release acceptance process according to the first embodiment of this invention. A state acceptance process and a special sparse state release acceptance process are executed, and a special sparse state monitoring process is executed by the application CPU 303 of the information collection terminal device 3.

  When the game is started by the player, the information collecting terminal device 3 determines the gaming machine based on the monitoring period and determination value (FIG. 10E) of the special prize sparse state set by the monitoring period setting process shown in FIG. It is determined whether 4a is in the special prize sparse state (S11). At this time, on the basis of the monitoring period and determination value (FIG. 10E) for the special prize state A set by the monitoring period setting process, the special prize state A monitoring process (FIG. 14) is simultaneously performed.

  When the special prize sparse state is detected based on the determination value during the monitoring period, the information collecting terminal device 3 determines that the corresponding gaming machine 4a is in the special sparse state via the network communication port 308. The device 1 is notified (S12). The special prize sparse state is detected by a special prize sparse state detection process (FIG. 12).

  When the game hall internal management device 1 receives the special sparse state notification of the gaming machine 4a from the information collection terminal device 3 via the network communication port 106, the game stadium internal management device 1 performs special sparse state acceptance processing (S15, S16).

  Specifically, a special sparse state flag is set in the gaming machine 4a that has been notified of the special sparse state (S15). Then, the game hall internal management device 1 notifies the information collection terminal device 3 via the network communication port 106 of the effective operating time for maintaining the special sparse state flag for the gaming machine 4a (S16).

  The effective operation time is set to be longer than the interval at which fraud is performed (for example, when it is estimated to be performed every day, it is 12 hours, which is the business hours of the game hall). As a result, the special sparse state flag is set for the gaming machine 4a in which the illegal act that would be profitable to the game hall is performed, and the illegal action that causes damage to the game hall is performed the next day. Even so, since the special prize sparse state flag is maintained for the gaming machine 4a, it is possible to detect an abnormality (injustice) based on the criteria for the special prize dense state B described later.

  The effective operation time is set as the operation time by converting the recovery signal for 100 recovery balls into 1 minute. Thereby, even if the operation of the gaming machine 4a is sluggish, a short monitoring period, that is, a period for detecting an abnormality based on a strict judgment criterion can be extended, and an illegal act by an unauthorized person can be detected effectively. In addition, it is not restricted to the time based on operation amount, You may set effective operation time by actual time.

  In step S12, when the information collection terminal device 3 notifies the game hall internal management device 1 that the gaming machine 4a is in the special prize sparse state, the preliminarily set monitoring period and determination value of the special prize dense state A are displayed. The monitoring period of the dense state B and the judgment value (FIG. 10E) are updated (S13). Then, the effective operating time of the special sparse state flag received from the game hall internal management device 1 via the network communication port 308 is set (S14).

  Note that if the special prize sparse state is not detected in step S11, these processes (S12 to S14) are not performed, and the process proceeds to step S17.

  Next, the information collection terminal device 3 determines whether or not the effective operating time of the set special prize sparse state flag has elapsed (S17). If the valid operating time has not elapsed, the special sparse state monitoring process is terminated.

  On the other hand, when the effective operating time of the special prize sparse state flag has elapsed, it can be determined that an illegal act determined to be a special prize dense state has not been performed for a certain period of time, so the special prize sparse state flag of the gaming machine 4a is canceled. This is notified to the game hall internal management device 1 via the network communication port 308 (S18). Accordingly, it is possible to prevent frequent occurrence of abnormality determination due to an increase in the number of gaming machines 4a monitored in a game field based on a criterion for determining a short monitoring period (a criterion for determining the special prize state B), that is, a strict criterion.

  When the game hall internal management device 1 receives a notification of the release of the special sparse state flag of the gaming machine 4a from the information collection terminal device 3 via the network communication port 106, the special sparse state of the gaming machine 4a that has received the notification. The flag is canceled (S20). As a result, the gaming machine 4a in which the special prize sparse state flag is set is excluded from the determination target based on the determination standard for the special prize dense state B.

  When the information collection terminal device 3 notifies the game hall internal management device 1 of the release of the special sparse state flag of the gaming machine 4a, the information collection terminal device 3 indicates the special period dense state A monitoring period and determination value set in step S13. The monitoring period and the judgment value are updated (S19).

  FIG. 12 is a flowchart illustrating special sparse state detection processing according to the first embodiment of this invention. The special sparse state detection process is executed by the application CPU 303 of the information collection terminal device 3 every time a start signal is detected from the gaming machine 4a.

  First, the information collecting terminal device 3 determines whether or not a start signal for a variable display game has been detected from the gaming machine 4a (S21). When the start signal is not detected from the gaming machine 4a, the special sparse state detection process is terminated.

  On the other hand, when a start signal is detected from the gaming machine 4a, it is determined whether or not the gaming machine 4a is in a probability variation state depending on whether or not a probability variation signal is output from the gaming machine 4a (S22). When the gaming machine 4a is not in the probability variation state, a deviation value “0” is written in one storage area of the game history storage area shown in FIG. 13 (S24).

  When the gaming machine 4a is in the probability variation state, the deviation value “0” is written in a number of storage areas corresponding to the probability variable multiple of the gaming history storage area shown in FIG. 13, for example, five storage areas (S23). . As a result, the special sparse state detection process can eliminate the influence caused by an increase in the special occurrence probability during the probability variation state. In addition, the abnormality determination process can be easily implemented because the normal gaming state and the probability variation state having different special occurrence probabilities can be handled in a unified manner without distinguishing the determination criteria for abnormality determination. Furthermore, since the abnormality determination is performed collectively without separating these states, information necessary for the determination is gathered quickly, and rapid abnormality detection can be performed.

  Next, whether or not the gaming machine 4a is in the special gaming state is determined based on whether or not a special prize signal is output from the gaming machine 4a as a result of the variable display game corresponding to the start signal detected in step S21 (S25). ). When the gaming machine 4a is not in the special gaming state, the process proceeds to step S27.

  On the other hand, when the gaming machine 4a is in the special gaming state, it indicates that the result of the variable display game executed by the gaming machine 4a is a win, so that the game history storage area is not written in step S23 or step S24. The winning value “1” is overwritten on the value “0” (S26).

  However, in step S23, since the shift value “0” is written in the number of storage areas corresponding to the probable multiple of the game history storage area, one of the plurality of storage areas has the largest address. Only the value “1” is overwritten. As a result, the number of occurrences of the special prize can be accurately counted while eliminating the influence due to the increase in the special prize occurrence probability during the probability fluctuation state.

  Next, in the special prize sparse state storage area (in FIG. 13, an area corresponding to the number obtained by multiplying the monitoring period of the special prize sparse state set in the monitoring period table by the reciprocal of the special prize occurrence probability p with reference to the pointer). The number of hit values “1” written is counted (S27). Then, the determination value of the special prize sparse state calculated in advance (FIG. 10E) is read (S28), and the total of the winning value “1” (number of occurrence of special prize) is compared with the determination value (S29). When the number of occurrences of the special prize is equal to or less than the determination value, the special prize sparse state flag is set in the gaming machine 4a (S30).

On the other hand, when the number of occurrences of the special prize is larger than the determination value, it is determined that the gaming machine 4a is not in the special prize sparse state, and the process returns to step S21 to continue the special sparse state detection process. If the special sparse state flag is already set in the gaming machine 4a, the special sparse state flag is canceled when the effective operating time has elapsed since the special prize sparse state flag was set (step S20 in FIG. 11). ).

  Instead of the start signal, a symbol confirmation signal (a signal indicating that the variation display game has been completed when the result mode of the variation display game is confirmed) may be used. In this case, the presence / absence of the special prize signal is determined after a predetermined time has elapsed since the symbol determination signal was detected.

  FIG. 13 is an explanatory diagram of the game history storage area according to the first embodiment of this invention, and is used as a special prize sparse state storage area and a special prize dense state storage area. This storage area is configured by a ring buffer provided in the RAM 305 of the information collection terminal device 3.

  The game history storage area shown in FIG. 13 can store the results of the variable display game executed by the gaming machine 4a in the storage area of 0 to 1574. Note that the number of game history storage areas is not limited to 1575, and is the largest number obtained by multiplying each monitoring period set in the monitoring period table by the reciprocal of the special prize occurrence probability p (1500 in FIG. 10E). It is sufficient that a sufficient storage area is secured.

  The pointer (arrow in the figure) indicates an area for storing the result of the currently displayed variable display game (outlier value “0” or winning value “1”), game history storage area (0) → game history storage area (1) →... → Game history storage area (1574) → Game history storage area (0) are used in a circulating order.

  At this time, using the pointer as a reference, the past storage areas corresponding to the number obtained by multiplying each monitoring period set in the monitoring period table by the reciprocal of the special prize occurrence probability p are the special prize sparse state storage area and the special prize dense state, respectively. A storage area and special prize dense B storage area. In other words, the special sparse state storage area is based on the pointer in the past 1500 storage areas, the special prize dense state A storage area is based on the pointer in the past 900 storage areas, and the special prize dense state B storage area is based on the pointer. This corresponds to the past 300 storage areas. Then, the number of special prize occurrences in the past execution times of the predetermined variable display game in each storage area (in each monitoring period), that is, the special prize occurrence frequency is a hit value “1” written in the target storage area. It can be easily taken out by obtaining the total.

  The game history stored in the game history storage area is continuously monitored by recording the game history continuously from the game history of the previous business day, and illegal activities across business days are monitored. To do. In addition, dummy data may be set in advance when there is no game history accumulation for the first time. The dummy data is, for example, data in which a deviation value “0” is written in a number of storage areas corresponding to the reciprocal of the special prize occurrence probability p, and one of the storage areas is overwritten with the value “1”. Further, for example, data obtained by randomly overwriting a plurality of outlier values “0” with a value “1” in accordance with the occurrence probability may be used. When random data is dummy data, the number of hit values “1” is set in consideration of the risk of being determined to be abnormal by the dummy data.

  In this way, by dividing the number of regions corresponding to the number of executions of the predetermined variable display game and storing the result of the variable display game, the execution result of the variable display game in the past predetermined monitoring period is used as the game history. Can record.

  FIG. 14 is a flowchart of the special dense state monitoring process according to the first embodiment of this invention, which is executed by the CPU 101 of the game hall internal management device 1 and the application CPU 303 of the information collection terminal device 3.

  When the game is started by the player, the information collecting terminal device 3 determines whether or not the special prize dense state of the gaming machine 4a is detected by the special prize state detection process shown in FIG. 15 (S31).

  When the special prize dense state is detected based on the determination value during the monitoring period, the information collecting terminal device 3 determines that the corresponding gaming machine 4a is in the special prize dense state via the network communication port 308. The device 1 is notified (S32).

  When the game hall internal management device 1 receives the notice of the special prize state of the gaming machine 4a from the information collecting terminal device 3 via the network communication port 106, the game hall internal management device 1 performs a special prize state reception process (S33, S34).

  Specifically, a special prize state flag is set in the gaming machine 4a that has been notified that the special prize state is in effect (S33). Then, the output device 109 notifies that the gaming machine 4a is performing an illegal act that may cause damage to the game arcade (suspected) (S34). As a notification method, an abnormality of the target gaming machine 4a is displayed on a display provided as the output device 109, or notified by a speaker. Further, the detected abnormality may be stored as a history in the HDD 105 of the game hall management device 1.

  On the other hand, when the special prize dense state is not detected in step S31, the game hall internal management device 1 is not notified (S32), and the process proceeds to step S35.

  In step S35, when the special prize dense state is released, the fact is notified to the game hall internal management device 1 via the network communication port 308 (S35).

  When the game hall internal management device 1 receives the notification of the release of the special dense state flag of the gaming machine 4a from the information collection terminal device 3 via the network communication port 106, the game hall internal management device 1 performs the special fine state release acceptance process (S36, S37). Do.

  Specifically, the special prize dense state flag of the gaming machine 4a that has been notified to release the special prize dense state flag is released (S36). Then, the alarm that has been notified by the output device 109 during the setting of the special prize dense state flag is canceled (S37).

  FIG. 15 is a flowchart illustrating the special prize dense state detection processing according to the first embodiment of this invention. The special prize dense state detection process is executed by the application CPU 303 of the information collecting terminal device 3 every time a special prize signal is detected from the gaming machine 4a.

  First, the information collection terminal device 3 determines whether or not a special gaming state has occurred in the gaming machine 4a based on whether or not a special prize signal is detected from the gaming machine 4a (S41). When the occurrence of the special gaming state of the gaming machine 4a is not detected, the special prize dense state detection process is terminated.

  On the other hand, when the occurrence of the special gaming state of the gaming machine 4a is detected, the winning value “1” is written in the gaming history storage area in step S26 of FIG. In step S42, with reference to this, the special prize state storage area (corresponding to the number obtained by multiplying the special period dense state monitoring period set in the monitoring period table by the inverse of the special prize occurrence probability p with reference to the pointer in FIG. 13). The number of hit values “1” written in the number of areas) is counted (S42).

  Then, the determination value of the special prize dense state is read (S43), and the sum of the currently set determination value (the determination value of the special prize dense state A or the determination value of the special prize dense state B) and the winning value “1” is summed up. (Special Award occurrence count) is compared (S44). When the number of occurrences of the special prize is equal to or greater than the determination value, a special special status flag is set in the gaming machine 4a (S45).

  On the other hand, when the number of occurrences of the special prize is less than the determination value, it is determined that the gaming machine 4a is not in the special prize dense state. If the special prize state flag has already been set for the gaming machine 4a, the special prize state flag is canceled (S46).

  As described above, in the first embodiment, only the gaming machine 4a determined to be in the special prize sparse state is targeted, based on the judgment standard for the special prize dense state B in a short monitoring period, that is, a strict judgment standard. Detects the special prize dense state. As a result, it is possible to quickly detect an illegal act without frequent abnormality determinations.

  Also, once the game machine 4a for which the special prize sparse state flag has been set is released for a certain period of time, the number of gaming machines 4a monitored according to the strict criteria for the special prize dense state B increases in the game hall. Thus, frequent occurrence of abnormality determination can be prevented.

  Further, the special sparse state detection process is performed every time a start signal is detected from the gaming machine 4a (every time the variable display game is executed), and the special prize dense state detection process is performed every time a special signal is detected from the gaming machine 4a. By executing (every time a special prize occurs), it is possible to detect anomalies each time a variable display game is executed without waiting for the accumulation of a huge amount of game information, and quickly determine the anomalies while the game machine is running can do. In addition, an abnormality can be detected in real time as the game is executed.

  In addition, by writing the result of one variation display game in the probability variation state to the memory area multiplied by the probability variation multiple, a criterion for determining an abnormality between the normal gaming state and the probability variation state with different award occurrence probabilities Therefore, it is possible to easily implement abnormality determination. In addition, since these states are not separated and the abnormality is determined collectively, information necessary for the determination is gathered quickly, and rapid abnormality detection can be performed.

  Next, a second embodiment of the present invention will be described.

  In the second embodiment, only the gaming machines 4a determined to be in the special prize dense state are monitored for the special prize sparse state in a short monitoring period (a criterion with a high risk rate for misjudgment). The second embodiment differs from the first embodiment described above in that only the determination criteria, determination values, and monitoring processing of the special prize dense state and the special prize sparse state are different from the first embodiment described above. Only the configuration will be described, and the description of the same configuration as that of the first embodiment will be omitted.

  FIG. 16 shows temporal changes in the special occurrence frequency based on the game information output by the gaming machine 4a according to the second embodiment of the present invention.

  In FIG. 16, the horizontal axis represents the number of executions of the variable display game (start number), and the vertical axis represents the number of occurrences of the special gaming state (special prize number). Each time the information collection terminal device 3 receives a start signal and a special prize signal from the gaming machine 4a, the information collecting terminal device 3 cumulatively adds the start number and the special prize number and records a special prize occurrence history. Then, as shown in FIG. 16, the number of special prizes per start number of the variable display game, that is, the special occurrence frequency is calculated.

  A line An (n is an arbitrary integer) indicates the special occurrence frequency per predetermined start number of the variable display game during the monitoring period with a slope. When the variation display game is started, the number of occurrences of the special prize during the monitoring period is counted from the start of the variation display game, and the resulting special occurrence frequency is indicated by a change in the slope of the line An. The line An is updated from the line A1 to the line A2, the line A3,... Every time the variable display game is started, and the prize occurrence frequency during each monitoring period is indicated by an inclination. Then, using the calculated line An, it is determined whether an abnormality has occurred based on the prize occurrence frequency.

T _A n (n is an arbitrary integer) indicates the monitoring period of each line An. The monitoring period is set in advance by the monitoring period generation process (FIG. 9). The monitoring period varies depending on the abnormal state to be detected (special prize sparse state, special prize dense state A, or special prize dense state B). Here, as a monitoring period for detecting the special prize sparse state A, a period during which the variable display game corresponding to three times the reciprocal of the special prize occurrence probability p is started (executed) is set. That is, when the special prize occurrence probability p is 1/300, the monitoring period goes back to the past from the time of the abnormality determination, and is the past 900 times of the variable display game as the game history. The monitoring period is not limited to three times the reciprocal of the special prize occurrence probability p, but is a period in which the start count of the variable display game capable of detecting an abnormality based on the set abnormality determination criterion can be secured.

  A line D indicates an inclination serving as a criterion for determining the special prize sparse state. When the slope of the line An is lower than the slope of the line D, the special prize occurrence frequency is too low, and the gaming machine 4a can determine that the special prize sparse state A. Here, since the slope of the line A6 is lower than the slope of the line D, the special prize occurrence frequency during the monitoring period of the line A6 (during the execution of the fluctuation display game of the past 900 times from the start of the fluctuation display game indicated by a). Can be determined to be insufficient. Therefore, it can be determined that a fraudulent act that is beneficial to the game arcade is being performed at the start detection time indicated by a, and the alarm A is notified.

  A line C indicates an inclination serving as a criterion for determining the special prize dense state. When the slope of the line An exceeds the slope of the line C, the special prize occurrence frequency is excessive, and the gaming machine 4a can determine that the special prize is dense. That is, when the slope of the line An falls within the slope of the line C and the slope of the line D, the normal gaming state, when the slope of the line An exceeds the slope of the line C, the special prize dense state, the slope of the line An Is less than the slope of the line D, it can be determined that the special prize sparse state A.

  FIG. 17 shows a change in the monitoring period used for abnormality determination according to the second embodiment of the present invention. Note that the same reference numerals as those used in FIG. 16 indicate the same contents as those in FIG.

  Every time a game is started and a special prize is generated in the gaming machine 4a, it is determined whether or not a special dense state has occurred in a predetermined monitoring period from the time when the special prize is generated. Further, every time a variable display game is started on the gaming machine 4a, it is determined whether or not a special sparse state has occurred in a predetermined monitoring period from the start of the variable display game. FIG. 17 shows a case where the special prize dense state is detected when the special prize indicated by c is generated.

When the special prize dense state is detected, the monitoring period for detecting the special prize sparse state is changed after the time of the detection. Each monitoring period T _A n lines An shown in FIG. 16, prize a period for detecting the sparse state A, since the start of the variable display game shown at the end of each line An, changes during the last 900 times display Set while the game is running. Meanwhile, after the prize-tight state is detected at the time of c is monitoring period T _B 1 to T _B 6 lines B1~ line B6 as a period for detecting the prize sparse state B, and the end point of each line Bn It is changed while the past variable display game is executed for the number of times corresponding to the reciprocal of the special prize occurrence probability p from the starting point of the variable display game shown. When the special prize occurrence probability p is 1/300, the monitoring period T _B n is the time when the variable display game is executed 300 times in the past since the start of the variable display game.

  When the slope of the line Bn is lower than the slope of the line D, the occurrence frequency of the special prize is insufficient, and the gaming machine 4a can determine that the special prize sparse state B. Here, since the slope of the line B6 is lower than the slope of the line D, the prize occurrence frequency during the monitoring period of the line B6 (during the execution of the past 300 fluctuation display games from the start of the fluctuation display game indicated by b). Can be determined to be insufficient. Thus, at the start of the variable display game indicated by b, it can be determined that a fraudulent act that would benefit the game hall is being performed, and the alarm B is notified.

  The determination criterion indicated by the line Bn is set to have a shorter monitoring period than the determination criterion indicated by the line An. Therefore, even if the player who performs the fraudulent act is playing the same game, the determination criterion indicated by the line An The alarm is notified earlier when the determination is based on the criterion indicated by the line Bn in comparison with. In other words, since the judgment is made based on strict judgment criteria, the time when the abnormality is discovered is early. However, if it is determined in advance based on the criteria indicated by the line Bn, it is determined that the special prize sparse state is present until the special occurrence frequency is low at a stage where the number of start of the variable display game is small, compared with the case of the line An. The probability of determining that the gaming machine 4a that has not been cheating is also abnormal increases. In the present invention, only the gaming machines 4a determined to be in the special prize dense state are targeted, and the judgment performance is improved by determining the special prize sparse state on the basis of the line Bn, and the detection time of the fraudulent act is accelerated. can do.

  FIG. 18 is a configuration diagram of the determination criteria for the special prize dense state and the special prize sparse state and the monitoring period table according to the second embodiment of this invention.

  FIG. 18A shows the criteria for determining the special prize dense state and the special prize sparse state. These determination criteria are preliminarily set in the RAM 103 by the setting input device 110 provided in the game hall internal management device 1 (step S1 in FIG. 9). In the second embodiment, the determination criterion for the special prize sparse state is set to 5%, and the determination criterion for the special prize dense state is set to 3%. However, the determination criterion to be set is not limited to these values.

  FIG. 18B shows a monitoring period table. 18B is a monitoring period for the abnormality determination and a determination value serving as a threshold value are the CPU 101 of the game hall internal management device 1, the determination criteria shown in FIG. 18A, and FIG. It is calculated based on (D) and created (step S2 in FIG. 9).

  The monitoring period is a period in which the number of start times of the variable display game that can detect an abnormality based on the set abnormality determination standard can be secured. For example, while the variable display game is executed 900 times in the determination of the special prize dense state, while the variable display game is executed 1500 times in the determination of the special prize sparse state A, or the variable display game is determined in the determination of the special prize sparse state B. Set to be executed 900 times.

  At this time, if the special event occurrence probability p of the gaming machine 4a is 1/300, 900 obtained by dividing 900 times by the reciprocal of the special event occurrence probability p is recorded in the special period dense monitoring period of the monitoring period table. Similarly, the monitoring period of the special prize sparse state A is recorded as 5, and the monitoring period of the special prize sparse state B is recorded as 3. In this way, the monitoring period is recorded by a value obtained by dividing the start number of the variable display game to be set by the reciprocal number of the special prize occurrence probability value p, thereby monitoring corresponding to each gaming machine 4a having a different special prize occurrence probability p. The period can be easily calculated. That is, by multiplying the numerical value recorded as the monitoring period by the reciprocal of the special prize occurrence probability p, it is possible to calculate the number of executions of the variable display game that becomes the monitoring period corresponding to each gaming machine 4a.

  The method for calculating the determination value is as follows.

  The value shown in FIG. 10C is used to calculate the determination value for the special prize dense state. Comparing the value shown in FIG. 10C with the criteria for the special prize state determination value shown in FIG. 18A, when the number of special prizes exceeds seven during the special period dense state monitoring period, It turns out that it will be in the state below 3% of criteria of a state. Accordingly, FIG. 18 (A) shows the number of occurrences of the special prize 7 in the number of executions of the variable display game corresponding to three times the reciprocal of the special prize occurrence probability p (900 if the special prize occurrence probability p is 1/300). It is set as a special prize dense state determination value (threshold value).

  The value shown in FIG. 10D is used to calculate the determination value of the special prize sparse state A. When the value shown in FIG. 10D is compared with the criteria for determining the special sparse state determination value shown in FIG. 18A, the special sparseness is obtained when the number of special prizes is one or less during the monitoring period of the special sparse state A. It turns out that it will be in the state below 5% of criteria of a state. Accordingly, FIG. 18A shows the number of occurrences of the special prize 1 in the number of times of the variable display game execution corresponding to five times the reciprocal of the special prize occurrence probability p (1500 if the special prize occurrence probability p is 1/300). It is set as the special prize sparse state determination value A (threshold value) shown.

  The value shown in FIG. 10C is used to calculate the determination value of the special prize sparse state B. When the value shown in FIG. 10C is compared with the criteria for determining the special sparse state determination value shown in FIG. 18A, the special sparseness is obtained when the number of special prizes is 0 or less during the monitoring period of the special prize sparse state B. It turns out that it will be in the state below 5% of criteria of a state. Accordingly, in FIG. 18 (A), the number of occurrences of the special prize 0 at the number of times of the variable display game execution corresponding to three times the reciprocal of the special prize occurrence probability p (900 if the special prize occurrence probability p is 1/300) is shown in FIG. It is set as the special prize sparse state determination value B (threshold value) shown.

  The game hall internal management device 1 notifies the information collection terminal device 3 of the monitoring period table created based on the threshold value thus obtained (step S4 in FIG. 9). Then, in step S6 in FIG. 9, the determination value (one time) of the special sparse state A shown in FIG. 18B is set instead of the special sparse state determination value. In step S7 in FIG. Instead of the state determination value A, a determination value (seven times) for the special prize dense state shown in FIG.

  FIG. 19 is a flowchart of the special prize dense state monitoring process, the special prize dense state acceptance process, and the special prize dense state release acceptance process according to the second embodiment of the present invention, in which the CPU 101 of the game hall internal management device 1 performs the special prize dense state. The reception process and the special prize dense state release acceptance process are executed, and the special prize dense state monitoring process is executed by the application CPU 303 of the information collection terminal device 3.

  When the game is started by the player, the information collecting terminal device 3 uses the gaming machine based on the monitoring period and determination value (FIG. 18B) of the special dense state set by the monitoring period setting process shown in FIG. It is determined whether or not 4a is in the special prize dense state (S51). At this time, the special sparse state monitoring process (FIG. 21) is simultaneously performed based on the special sparse state A monitoring period and the determination value (FIG. 18B) set by the monitoring period setting process.

  When the special prize dense state is detected based on the determination value during the monitoring period, the information collecting terminal device 3 determines that the corresponding gaming machine 4a is in the special prize dense state via the network communication port 308. The device 1 is notified (S52). The special prize dense state is detected by a special prize dense state detection process (FIG. 20).

  When the game hall internal management device 1 receives a notice of the special prize state of the gaming machine 4a from the information collection terminal device 3 via the network communication port 106, the game hall internal management device 1 performs a special prize state reception process (S55, S56).

  Specifically, a special prize state flag is set in the gaming machine 4a that has been notified of the special prize state (S55). Then, the game hall internal management device 1 notifies the information collection terminal device 3 via the network communication port 106 of the effective operation time for maintaining the special sparse state flag for the gaming machine 4a (S56).

  In step S52, when the information collection terminal device 3 notifies the game hall internal management device 1 that the gaming machine 4a is in the special prize dense state, the pre-set special monitoring sparse state A and the determination value are displayed as the special prize. The sparse state B is updated to the monitoring period and determination value (FIG. 18B) (S53). Then, the effective operating time of the special prize dense state flag received from the game hall internal management device 1 via the network communication port 308 is set (S54).

  In step S51, when the special prize dense state is not detected, these processes (S52 to S54) are not performed, and the process proceeds to step S57.

  Next, the information collection terminal device 3 determines whether or not the effective operating time of the set special prize state flag has elapsed (S57). If the effective operation time has not elapsed, the special prize dense state monitoring process is terminated.

  On the other hand, when the valid operating time of the special prize state flag has elapsed, the game hall internal management device 1 is notified via the network communication port 308 that the special prize state flag of the gaming machine 4a is to be released (S58). ).

  When the game hall internal management device 1 receives a notification of the release of the special prize dense state flag of the gaming machine 4a from the information collecting terminal device 3 via the network communication port 106, the gaming machine internal management device 1 receives the special prize dense of the gaming machine 4a that has received the notice. The status flag is released (S60). As a result, the gaming machine 4a in which the special prize dense state flag is set is excluded from the determination target according to the special criterion sparse state B determination criterion.

  When the information collection terminal device 3 notifies the game hall internal management device 1 of the release of the special prize dense state flag of the gaming machine 4a, the information collection terminal device 3 displays the special sparse state A and the monitoring period and determination value of the special prize sparse state B set in step S53. The monitoring period and the judgment value are updated (S59).

  FIG. 20 is a flowchart illustrating the special prize dense state detection processing according to the second embodiment of this invention. The special prize dense state detection process is executed by the application CPU 303 of the information collecting terminal device 3 every time a special prize signal is detected from the gaming machine 4a.

  The special prize dense state detection process in FIG. 20 is different from the special prize dense state detection process (FIG. 15) in the first embodiment only in the processes after the special prize dense state determination process (S64). Explanation will be made and the description of the same processing (S61 to S63) as that of the first embodiment will be omitted.

  In step S64, the information collection terminal device 3 compares the total of the winning value “1” (the number of special prize occurrences) with the determination value of the special prize dense state (FIG. 18B). When the number of occurrences of the special prize is equal to or greater than the determination value, a special special status flag is set in the gaming machine 4a (S65).

  On the other hand, when the number of special prize occurrences is smaller than the determination value, it is determined that the gaming machine 4a is not in the special prize dense state, and the process returns to step S61 to continue the special prize dense state detection process. If the special spot state flag has already been set for the gaming machine 4a, the special spot state flag is canceled after the effective operation time has elapsed since the special spot state flag was set (step S60 in FIG. 19). ).

  FIG. 21 is a flowchart of the special sparse state monitoring process according to the second embodiment of this invention, which is executed by the CPU 101 of the game hall internal management device 1 and the application CPU 303 of the information collection terminal device 3.

  When the game is started by the player, the information collection terminal device 3 determines whether or not the special sparse state of the gaming machine 4a is detected by the special sparse state detection process shown in FIG. 20 (S71).

  When the special prize sparse state is detected based on the determination value during the monitoring period, the information collecting terminal device 3 determines that the corresponding gaming machine 4a is in the special sparse state via the network communication port 308. The device 1 is notified (S72).

  When the game hall internal management device 1 receives the special sparse state notification of the gaming machine 4a from the information collecting terminal device 3 via the network communication port 106, the special sparse state acceptance processing (S73, S74) is performed.

  Specifically, a special sparse state flag is set in the gaming machine 4a that has been notified of the special sparse state (S73). Then, the output device 109 notifies that the gaming machine 4a is performing a fraudulent act that is beneficial to the game hall (suspected) (S74). As a notification method, an abnormality of the target gaming machine 4a is displayed on a display provided as the output device 109, or notified by a speaker. Further, the detected abnormality may be stored as a history in the HDD 105 of the game hall management device 1.

  On the other hand, if the special sparse state is not detected in step S71, the game hall internal management device 1 is not notified (S72), and the process proceeds to step S75.

  In step S75, when the special prize sparse state is released, the fact is notified to the game hall internal management device 1 via the network communication port 308 (S75).

  When the game hall internal management device 1 receives a notification of the release of the special sparse state flag of the gaming machine 4a from the information collection terminal device 3 via the network communication port 106, the special sparse state release acceptance process (S76, S77) is performed. Do.

  Specifically, the special prize sparse state flag of the gaming machine 4a that has been notified to release the special sparse state flag is canceled (S76). Then, the alarm that has been notified by the output device 109 during the setting of the special prize sparse state flag is canceled (S77).

  FIG. 22 is a flowchart illustrating special sparse state detection processing according to the second embodiment of this invention. The special sparse state detection process is executed by the application CPU 303 of the information collection terminal device 3 every time a start signal is detected from the gaming machine 4a.

  The special sparse state detection process of FIG. 22 differs only in the special sparse state detection process (FIG. 12) in the first embodiment and the process after the special sparse state determination value reading process (S88). Only the same processing as in the first embodiment (S81 to S87) will be omitted.

  The information collection terminal device 3 reads the value set as the determination value of the special prize sparse state (S88). Then, the currently set determination value (the determination value of the special prize sparse state A or the determination value of the special prize sparse state B) is compared with the sum of the winning value “1” (the number of occurrences of the special prize) and the determination value ( S89). When the number of occurrences of the special prize is equal to or less than the determination value, the special prize sparse state flag is set in the gaming machine 4a (S90).

  On the other hand, when the number of occurrences of the special prize is larger than the determination value, it is determined that the gaming machine 4a is not in the special prize sparse state. If the special sparse state flag is already set for the gaming machine 4a, the special sparse state flag is canceled (S91).

  As described above, in the second embodiment, only for the gaming machine 4a determined to be in the special prize dense state, based on the judgment standard for the special prize sparse state B in a short monitoring period, that is, a strict judgment standard, Detect sparse special prizes. As a result, it is possible to detect fraud quickly without causing frequent abnormality determinations.

  Next, a third embodiment of the present invention will be described.

  In the third embodiment, λ (reference value for abnormality determination) when the Poisson probability is set to a constant value is calculated in advance, and this is multiplied by the reciprocal of the special prize occurrence probability p of each gaming machine 4a to set the monitoring period. obtain. The third embodiment is different from the first embodiment described above only in the determination criteria for the special prize dense state and the special prize sparse state, and the determination value setting method, and therefore only the configuration different from the first embodiment described above. Explanation will be made and the description of the same configuration as that of the first embodiment will be omitted.

  FIG. 23 is a configuration diagram of the determination criteria for the special prize dense state and the special prize sparse state and the monitoring period table according to the third embodiment of this invention.

  FIG. 23A shows the criteria for determining the special prize sparse state and the special prize dense state. These determination criteria are preliminarily set in the RAM 103 by the setting input device 110 provided in the game hall internal management device 1 (step S1 in FIG. 9).

  In the third embodiment, the determination criteria for the special prize sparse state is 0 (times), the determination standard for the special prize dense state A is the special occurrence number 5 (times), and the special criterion for the special prize dense state B is generated. Set 2 times. However, the determination criterion to be set is not limited to these values.

  FIGS. 23B and 23C are reference values for calculating values to be set in the monitoring period table (FIG. 23D). These values are calculated in advance by the CPU 101 of the game hall internal management device 1 and stored in the HDD 105. The method for calculating the value shown in FIG. 23 (B) is as follows.

  First, the Poisson probability (P (X)) is set to 1%. By setting the Poisson probability to 1%, it is possible to obtain a reference for determining an abnormal state that occurs only with a probability of 1%.

  Then, λ (reference value for abnormality determination) when X prizes are generated is calculated. In this case, two values are calculated as the value of λ. One is λ in the case where it is determined that there are excessive states in which X prizes are generated only at a rate of 1% or less, and calculated for X = 0 to 5 is shown in FIG. ). This λ is used when determining the special prize dense state.

  The other is λ in the case where it is determined that there is an excessive state where the occurrence of X special prizes occurs only at a rate of 1% or less, and is calculated for X = 0 to 5 as shown in FIG. C). The value of λ is used when determining the special prize sparse state.

  FIG. 23D shows a monitoring period table. In the monitoring period table, a monitoring period for abnormality determination and a determination value serving as a threshold are set. These values are calculated by the CPU 101 of the game hall internal management device 1 based on the determination criteria shown in FIG. 21A and FIGS. 21B and 21C (step S2 in FIG. 9). The method for calculating the determination value is as follows.

  The determination value for the special sparse state is set to “0”, which is the same as the determination criterion set in FIG. In the monitoring period, the determination criterion is set to 0 (number of times) for the special prize occurrence in FIG. 23 (A). Therefore, referring to the value of λ for the number of special prize “0” in the numerical value shown in FIG. 23 (C), λ = 4.61. Here, since λ = n × p, the monitoring period can be obtained by multiplying the obtained λ by 1 / p. Here, 1383 (times) is obtained as the monitoring period when p = 1/300.

  That is, it can be determined that the state where the special prize of 0 (determination value) is generated at the number of executions of the variable display game 1383 times (monitoring period) is an excessive state (special prize sparse state) that occurs only at a rate of 1%.

  Similarly, the determination value for the special prize dense state A is set to “5”, which is the same as the determination criterion set in FIG. In setting the monitoring elephant period, the determination criterion in FIG. 23 (A) is set to the number of special prize occurrences 5 (times), so the value of λ of the special prize number “5” in the numerical value shown in FIG. 21 (B) is referred to. Then, λ = 1.27. Then, 381 (times) is obtained as the monitoring period when p = 1/300.

  That is, it can be determined that the state where the special display of 5 times (determination value) is generated at the rate of execution of the variable display game 381 times (monitoring period) is an excessive state (special prize dense state A) that occurs only at a rate of 1%. .

  Similarly, the determination value of the special prize dense state B is set to “2”, which is the same as the determination criterion set in FIG. In setting the monitoring period, the determination criterion in FIG. 23 (A) is set to 2 (number of times), so refer to the value of λ of the number of times of special prize “2” in the numerical value shown in FIG. 21 (B). , Λ = 0.42. Then, 42 (times) is obtained as the monitoring period when p = 1/300.

  That is, it can be determined that the state where the special prize is generated twice (determination value) with the start number of 42 times (monitoring period) is an excessive state (special prize dense state B) that occurs only at a rate of 1%.

  Based on the threshold value thus obtained, the game hall internal management device 1 creates a monitoring period table (step S3 in FIG. 9). In step S6 in FIG. 9, the special sparse state determination value (0 times) and the monitoring period (1383 times) shown in FIG. 23D are set as the special sparse state determination value. In step S7, the determination value (5 times) and the monitoring period (381 times) of the special density state A shown in FIG.

  In this way, by calculating and storing the value of λ with a fixed Poisson probability (abnormality determination criterion) in advance, each game machine can be obtained by simply multiplying the value of λ by a special probability that varies depending on the game machine. The monitoring period corresponding to can be easily calculated. That is, the values shown in FIGS. 21B and 21C can be used for general purposes when calculating a threshold value for each gaming machine 4a having a different probability of generating a special prize.

  FIG. 24 is a flowchart illustrating special sparse state detection processing according to the third embodiment of this invention. The special sparse state detection process is executed by the application CPU 303 of the information collection terminal device 3 every time a start signal is detected from the gaming machine 4a.

  First, the information collecting terminal device 3 determines whether or not a start signal of a variable display game is detected from the gaming machine 4a (S101). When the start signal is not detected from the gaming machine 4a, the special sparse state detection process is terminated.

  On the other hand, when a start signal is detected from the gaming machine 4a, it is determined whether or not the gaming machine 4a is in a probability fluctuation state depending on whether or not the probability changing signal is output from the gaming machine 4a (S102). When the gaming machine 4a is not in the probability variation state, a deviation value “0” is written in one storage area of the game history storage area shown in FIG. 13 (S104).

  When the gaming machine 4a is in the probability variation state, the deviation value “0” is written in the number of storage areas corresponding to the probability variable multiple of the gaming history storage area shown in FIG. 13, for example, five storage areas (S103). . As a result, the special sparse state detection process can eliminate the influence caused by an increase in the special occurrence probability during the probability variation state.

  Next, whether or not the gaming machine 4a is in the special gaming state is determined based on whether or not a special prize signal is output from the gaming machine 4a as a result of the variable display game corresponding to the start signal detected in step S101 (S105). ). When the gaming machine 4a is not in the special gaming state, the process proceeds to step S107.

  On the other hand, when the gaming machine 4a is in the special gaming state, it indicates that the result of the variable display game executed on the gaming machine 4a is a win, so that it is not written in the gaming history storage area in step S103 or step S104. The winning value “1” is overwritten on the value “0” (S106).

  However, in step S103, since the deviation value “0” is written in the number of storage areas corresponding to the probable multiple of the game history storage area, one of the plurality of storage areas has the largest address. Only the value “1” is overwritten. As a result, the number of occurrences of the special prize can be accurately counted while eliminating the influence due to the increase in the special prize occurrence probability during the probability fluctuation state.

  Next, the judgment value of the special prize sparse state calculated in advance and the monitoring period (FIG. 23D) are read (S107). Then, in the game history storage area, the number of winning values “1” written in the number of storage areas (1383) corresponding to the monitoring period of the special prize sparse state set in FIG. Is counted (S108).

  Then, the total of the winning value “1” counted in step S108 (number of special prize occurrences) is compared with the determination value (S109). When the number of occurrences of the special prize is equal to or less than the determination value, the special prize sparse state flag is set in the gaming machine 4a (S110).

  On the other hand, when the number of special prize occurrences is greater than the determination value, the special prize sparse state detection process is terminated. If the special sparse state flag is already set in the gaming machine 4a, the special sparse state flag is canceled when the effective operating time has elapsed since the special prize sparse state flag was set (step S20 in FIG. 11). ).

  Instead of the start signal, a symbol confirmation signal (a signal indicating that the variation display game has been completed when the result mode of the variation display game is confirmed) may be used. In this case, the presence / absence of the special prize signal is determined after a predetermined time has elapsed since the symbol determination signal was detected.

  FIG. 25 is a flowchart illustrating the special prize dense state detection processing according to the third embodiment of this invention. The special prize dense state detection process is executed by the application CPU 303 of the information collecting terminal device 3 every time a special prize signal is detected from the gaming machine 4a.

  First, the information collecting terminal device 3 determines whether or not a special gaming state has occurred in the gaming machine 4a based on whether or not a special prize signal is detected from the gaming machine 4a (S111). When the occurrence of the special gaming state of the gaming machine 4a is not detected, the special dense state detection process is terminated.

  On the other hand, when the occurrence of the special gaming state of the gaming machine 4a is detected, the winning value “1” is written in the gaming history storage area in step S116 of FIG. Next, the determination value of the special prize dense state and the monitoring period (FIG. 23D) are read (S112). In the game history storage area, the number of storage areas corresponding to the monitoring period of the special prize dense state A or B set in FIG. 23D with the pointer as a reference (the special prize dense state A is 381 or the special prize) The number of hit values “1” written in the 42 dense states B) is counted (S113).

  Then, the total of the winning value “1” counted in step S113 (number of special prize occurrences) is compared with each determination value (S114). If the number of occurrences of the special prize is equal to or greater than each determination value, a special special status flag is set in the gaming machine 4a (S115).

  On the other hand, when the number of special prize occurrences per start number corresponding to the monitoring period is less than the judgment value, it is judged that the gaming machine 4a is not in the special prize dense state A or B. If the special prize state flag is already set for the gaming machine 4a, the special prize state flag is canceled (S116).

  As described above, in the third embodiment, λ (reference value for abnormality determination) when the Poisson probability is a constant value is calculated in advance, and this is multiplied by the special prize occurrence probability p of each gaming machine 4a. By obtaining a monitoring period, it is possible to determine an abnormality based on a pre-calculated general-purpose reference value even if the performance of the gaming machine before and after the replacement (probability of occurrence of a special gaming state) differs due to the replacement of the gaming machine. it can.

  In the third embodiment, the case has been described in which the abnormality is determined only by the gaming machine 4a determined to be in the special prize sparse state based on the determination standard for the special prize dense state B. However, in the second embodiment described above. Abnormality can also be determined according to the determination criteria of the special prize sparse state B only for the gaming machines 4a determined to be in the special prize dense state as in the embodiment.

  The abnormality of each gaming machine 4a may be determined not by the information collection terminal device 3 but by other devices connected to the internal network such as the game hall internal management device 1. In this case, the information collection terminal device 3 transmits game information (or its accumulated value) detected from the gaming machine 4a and peripheral devices provided in each gaming machine 4a to the game hall internal management device 1. The game hall internal management device 1 detects an abnormality of each gaming machine 4a based on the received game information (or its accumulated value). That is, the gaming machine management device described in the claims may be configured by any of a plurality of devices including the information collection terminal device 3, the game hall internal management device 1, and other devices connected to the internal network. Good. Of these, a plurality of devices may constitute a gaming machine management device, or a single device may constitute a gaming machine management device.

  The embodiments disclosed herein are illustrative and non-restrictive in every respect. The scope of the present invention is defined by the terms of the claims, rather than the description of the invention described above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  As described above, the management device according to the present invention is a gaming machine management device that processes game information in a gaming machine in which the gaming machine is installed, and a gaming machine such as a pachinko gaming machine, a coin gaming machine, or a slot machine. Can be applied.

It is a system configuration figure of the gaming system of a 1st embodiment of the present invention. It is a block diagram which shows the structure of the game hall internal management apparatus of the 1st Embodiment of this invention. It is a structure of the microprocessor of the information collection terminal device of the 1st Embodiment of this invention. It is a block diagram around the gaming machine of the first embodiment of the present invention. It is a block diagram of the control system of the game control apparatus of the gaming machine of the first embodiment of the present invention. It is a timing diagram of the game information output from the gaming machine of the first embodiment of the present invention. It is a time change of the special occurrence frequency based on the game information output by the gaming machine of the first embodiment of the present invention. It is a time change of the monitoring period used for the abnormality determination of the 1st Embodiment of this invention. 4 is a flowchart of a monitoring period generation process and a monitoring period setting process according to the first embodiment of this invention. It is a block diagram of the determination reference | standard of the special prize dense state and the special prize sparse state of the 1st Embodiment of this invention, and a monitoring period table. It is a flowchart of the special prize sparse state monitoring process of the 1st Embodiment of this invention. It is a flowchart of the special prize sparse state detection process of the 1st Embodiment of this invention. It is explanatory drawing of the game log | history storage area of the 1st Embodiment of this invention. It is a flowchart of the special prize dense state monitoring process of the 1st Embodiment of this invention. It is a flowchart of the special prize dense state detection process of the 1st Embodiment of this invention. This is a temporal change in the special occurrence frequency based on the game information output by the gaming machine of the second embodiment of the present invention. It is a time change of the monitoring period used for the abnormality determination of the 2nd Embodiment of this invention. It is a block diagram of the determination reference | standard of the special prize dense state and special prize sparse state of the 2nd Embodiment of this invention, and a monitoring period table. It is a flowchart of the special prize dense state monitoring process of the 2nd Embodiment of this invention. It is a flowchart of the special prize dense state detection process of the 2nd Embodiment of this invention. It is a flowchart of the special prize sparse state monitoring process of the 2nd Embodiment of this invention. It is a flowchart of the special prize sparse state detection process of the 2nd Embodiment of this invention. It is a block diagram of the determination reference | standard of the special prize dense state and special prize sparse state of the 3rd Embodiment of this invention, and a monitoring period table. It is a flowchart of the special prize sparse state detection process of the 3rd Embodiment of this invention. It is a flowchart of the special prize dense state detection process of the 3rd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Game hall internal management apparatus 3 Information collection terminal device 4 Game apparatus 4a Game machine

Claims (7)

In a gaming machine management device that collects and manages information about games from gaming machines that can be given gaming value in relation to the execution results of the game,
Among the information regarding the game collected from the gaming machine, the value obtained on the basis of information relating to application of the game value, to detect the abnormality by determining whether Luke not exceed a predetermined threshold in a predetermined monitoring period Anomaly detection means;
The monitoring period includes a first monitoring period and a second monitoring period shorter than the first monitoring period,
Monitoring period changing means for changing the first monitoring period for detecting an abnormality that is detrimental to the game hall to the second monitoring period by detecting the abnormality that is beneficial to the gaming hall by the abnormality detecting means. And comprising
The abnormality detection means includes
When the value obtained based on the information relating to the provision of the game value is larger than the threshold used for detecting an abnormality that causes damage to the game hall, an abnormality that causes damage to the game hall is detected,
Detecting an abnormality that is beneficial to the game hall when a value obtained based on the information relating to the provision of the gaming value is smaller than the threshold value used to detect an abnormality that is beneficial to the game hall A gaming machine management device. In a gaming machine management device that collects and manages information about games from gaming machines that can be given gaming value in relation to the execution results of the game,
Among the information regarding the game collected from the gaming machine, the value obtained on the basis of information relating to application of the game value, to detect the abnormality by determining whether Luke not exceed a predetermined threshold in a predetermined monitoring period Anomaly detection means;
The monitoring period includes a first monitoring period and a second monitoring period shorter than the first monitoring period,
Monitoring period changing means for changing the first monitoring period for detecting an abnormality that is beneficial to the game hall to the second monitoring period by detecting the abnormality that causes damage to the gaming hall by the abnormality detecting means. And comprising
The abnormality detection means includes
When the value obtained based on the information relating to the provision of the game value is larger than the threshold used for detecting an abnormality that causes damage to the game hall, an abnormality that causes damage to the game hall is detected,
Detecting an abnormality that is beneficial to the game hall when a value obtained based on the information relating to the provision of the gaming value is smaller than the threshold value used to detect an abnormality that is beneficial to the game hall A gaming machine management device.   The monitoring period changing means, when no abnormality is detected based on the second monitoring period from when the first monitoring period is changed to the second monitoring period until the predetermined period elapses, The gaming machine management device according to claim 1 or 2, wherein after the predetermined period has elapsed, the second monitoring period is returned to the first monitoring period. The gaming machine can execute a supplementary game based on the establishment of a start condition, and can generate a special game state in which the supplementary game gives a game value in connection with deriving a specific result mode,
The abnormality detection means includes
Storing the number of times of execution of the auxiliary game and the number of times of occurrence of the special game state obtained from information about the game collected from the gaming machine ;
The value obtained by calculating the number of occurrences of the special gaming state per predetermined number of executions of the auxiliary game is compared with the threshold value used for detecting an abnormality that causes damage to the game arcade, and If the number of occurrences of the special gaming state per predetermined number of executions is excessive, an abnormality that causes damage to the game arcade is detected,
The value obtained by calculating the number of occurrences of the special gaming state per predetermined number of executions of the auxiliary game is compared with the threshold value used for detecting an abnormality that is beneficial to the game arcade, and The gaming machine management according to any one of claims 1 to 3, wherein when the number of occurrences of the special gaming state per predetermined number of executions is too small, an abnormality that is beneficial to the game hall is detected. apparatus. The gaming machine can execute a supplementary game based on the establishment of a start condition, and can generate a special gaming state in which the supplementary game gives a game value in connection with deriving a specific result mode;
The gaming machine management device
Based on a first probability of occurrence of the special gaming state for each execution of the auxiliary game, an expected value of occurrence of the special gaming state per arbitrary number of executions of the auxiliary game is calculated,
Based on the expected value, a second probability that the special gaming state is generated a predetermined number of times during an arbitrary number of executions of the auxiliary game is calculated,
5. The gaming machine management device according to claim 1, further comprising a threshold setting unit that sets a predetermined number of occurrences of the special gaming state as a threshold based on the second probability. The gaming machine can execute a supplementary game based on the establishment of a start condition, and can generate a special gaming state in which the supplementary game gives a game value in connection with deriving a specific result mode;
The gaming machine management device
Abnormality determination for calculating a reference value for abnormality determination for each occurrence number of the special gaming state when the probability that the special gaming state of the predetermined number of occurrences is set to a predetermined value during the arbitrary number of times of execution of the auxiliary game A reference value calculating means;
An abnormality determination reference value storage means for storing a reference value of the abnormality determination calculated by the abnormality determination reference value calculation means;
The number of executions of the auxiliary game that becomes the monitoring period of the abnormality determination based on the reference value of the abnormality determination stored by the abnormality determination reference value storage means and the probability that the special gaming state occurs every time the auxiliary game is executed Monitoring period calculating means for calculating
5. A threshold setting unit having a predetermined number of occurrences of the special gaming state in the predetermined number of executions of the auxiliary game calculated by the monitoring period calculation unit as a threshold. The gaming machine management device according to claim 1. The gaming machine can execute a supplementary game based on establishment of a start condition, and can generate a special game state in which the supplementary game gives a game value in connection with deriving a specific result mode, A gaming state and a high probability gaming state in which the probability of occurrence of the special gaming state is a predetermined multiple higher than the normal gaming state,
The gaming machine management device
An execution result storage means for storing a result of execution of the auxiliary game;
When the gaming machine of the normal game state, said securing auxiliary game the execution result executed every one of the storage means stores the result of execution of the auxiliary game to the execution result storage means for the securing ,
When said game machine is the high probability game state is to ensure the execution result storage unit of the predetermined multiple of each execution of the auxiliary game, the auxiliary game to one of the execution result storage means for the securing storing the result of execution is stored that execute the auxiliary game in each of the other execution result storage means for the securing,
Obtaining the secured execution result storage means as the number of times of execution of the auxiliary game;
An abnormality is detected by comparing a value obtained based on the number of occurrences of the special gaming state per predetermined number of executions of the auxiliary game stored in the execution result storage means with the predetermined threshold value. The gaming machine management device according to any one of claims 1 to 6.

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