JP5553338B2 - Game machine - Google Patents

Description

  The present invention relates to a gaming machine such as a ball game machine or a revolving game machine, and more particularly to an encryption technique for preventing unauthorized analysis of data in the gaming machine.

  Conventionally, among the various gaming machines, a so-called first type pachinko gaming machine displays a plurality of symbols in a display area such as a liquid crystal display provided substantially at the center of the gaming board while varying the symbols. (Hereinafter, such display is referred to as “symbol change” or “change display”). This gaming machine shifts to a special game called so-called big hit, in which more prize balls can be obtained than a normal game when the combination of symbols when a plurality of rows of symbol variations are stopped becomes a specific aspect. Known as a thing. The variable display of symbols in the display area is not limited to simply displaying multiple symbols in a variable manner, but the time required for the variable display to be a big hit if one more symbols are aligned, such as the so-called reach screen. For example, an effect is made to increase the player's expectation, such as making it longer. In addition, the player's expectation is enhanced by controlling the specific game such as the probability variation that changes the probability of transition to special games by giving the story to the variation display using characters on the image such as symbols Yes.

Japanese Patent Laid-Open No. 2001-162004 JP 2009-1000094 A

  In recent years, an act of illegally obtaining a game by modifying a gaming machine may be performed by an unauthorized person (see Patent Documents 1 and 2). Although various anti-fraud measures have been taken as countermeasures, fraudsters analyze internal operations with a logic analyzer, etc., and create a modified board that acts as a legitimate board and replaces it with a legitimate board. And other cheating activities are rampant. The technology of such fraudulent acts is increasing year by year as fast as the progress of anti-fraud technology, and as a manufacturer of gaming machines, it is required to take measures with more advanced technology.

  The present invention has been made in view of these problems, and an object thereof is to make it difficult to illegally analyze or remodel internal data in a gaming machine.

  In order to solve the above-described problems, a gaming machine according to an aspect of the present invention includes a game lottery means for executing a game lottery for giving a profit to a player in a game, and an instruction indicating contents determined by the game lottery means First order value generation means for generating a first order value indicating the order of processing indicated by the instruction each time the instruction is generated by changing the order value of the previous processing according to a predetermined order value generation rule; A display device for displaying a result of the game lottery, an encryption unit for encrypting and transmitting a command indicating the content determined by the game lottery unit, a decrypting unit for receiving and decrypting the encrypted command, and a command In accordance with the effect determining means for determining the contents to be displayed on the display device, the effect display control means for displaying the effect contents based on the determination by the effect determining means on the display device, and each time an instruction is received Second order value generation means for generating a second order value indicating the order of processing according to the instruction by changing the order value of the previous processing according to the order value generation rule; Order value comparing means for authenticating the first order value by comparing the two order values. The game lottery means, the first order value generation means, and the encryption means are provided on the main board that controls the progress of the game, and the decryption means, the effect determination means, the effect display control means, the second order value generation means, and the order The value comparison means is provided on the sub-board for controlling the production display, and the encryption means generates a first encryption key, which is a temporary symmetric key, at random at a predetermined timing after power-on. A generating means, a first encryption processing means for encrypting a command to be transmitted from the main board to the sub-board by a symmetric key encryption method using a first encryption key, and a second different from the first encryption key. The second key storage means in which the encryption key is stored in advance, the second encryption processing means for encrypting the first encryption key by the asymmetric key encryption method using the second encryption key, and the encrypted key The instruction, the encrypted first encryption key, and the first order value to the sub-board It has a command transmitting section for signal for, a. The decrypting means includes an instruction receiving means for receiving the encrypted instruction, the encrypted first encryption key, and the first sequence value from the main board, and an asymmetric key cryptosystem that is asymmetric with the second encryption key. A third key storage means in which a third encryption key to be a key pair is stored in advance; a first decryption processing means for decrypting the encrypted first encryption key using the third encryption key; And a second decryption processing means for decrypting the encrypted instruction using the decrypted first encryption key on condition that the first order value is authenticated by the second order value. At least one of the first encryption processing means and the second encryption processing means encrypts the first order value, and at least one of the first decryption processing means and the second decryption processing means is encrypted. The first order value is decoded.

  Here, the “game machine” includes a ball game machine such as a so-called pachinko game machine or a jade ball game machine, and a revolving game machine such as a so-called pachislot machine. The content of the command to be encrypted and transmitted is not limited as long as it is a command to be transmitted from the main board to the sub board. For example, information indicating the result of winning or failing lottery in pachinko machines, information indicating the type of variation pattern, a command variation start command or stop command, information indicating a lottery value hold status, a special game start command or end command, etc. is there.

  The “game lottery means” may be configured to correspond to “win / fail lottery means” in an embodiment described later. The first key generation means generates the first encryption key using a predetermined encryption algorithm based on a random value, but the generation number may be only once during the start of the gaming machine. It may be multiple times. The generation timing of the first encryption key may be the timing immediately after the power is turned on, or may be generated every time an instruction to be transmitted to the sub-board is generated. “Predetermined timing after power-on” means that a first encryption key is newly generated at least once after power-on. Therefore, the first encryption key is generated once and then re-generated. Temporary key to use until. The command transmitted from the main board to the sub board is encrypted by the target key encryption method using the first encryption key, and can be decrypted by using the same key. On the other hand, when the first encryption key is transmitted from the main board to the sub-board, since the encryption is performed by the asymmetric key encryption method using the second encryption key, the third encryption key that forms an asymmetric key pair is used. It can be decoded by using it. The second encryption key may be a public key of a public key cryptosystem, and the third encryption key may be a secret key of a public key cryptosystem. However, the “public key” in this case is not used for the purpose of disclosure, but merely used as an example of an asymmetric key.

  According to this aspect, since the first encryption key is generated based on a random value, inadvertent fixation of the first encryption key can be avoided, and the security and confidentiality of the key can be kept high. Can do. In addition, since the first encryption key is set to an indefinite value as a temporary key, even if the same command is transmitted, if it is encrypted with a different encryption key, the transmitted data will be different, and illegal analysis will be performed. It will also be difficult. Even if the first encryption key is decrypted by unauthorized analysis, if the first encryption key is newly regenerated at a predetermined timing, the unauthorized decryption result becomes meaningless. Further, the order values of the instructions are generated according to the same rule on the transmitting side and the receiving side, and these order values are compared, thereby making it easy to determine whether the transmitted data and the main board are normal. . Thus, since the confidentiality of the first encryption key is maintained, it is possible to make it difficult to analyze the content of the command to be transmitted. Further, since it becomes difficult to analyze the contents of instructions, it becomes difficult to make a counterfeit board by misusing the results of such analysis, and illegal acts can be effectively prevented.

  The second encryption processing means and the second key storage means may be formed of a one-chip circuit that integrally includes them in the main board. In this case, the path through which the second encryption key is sent from the second key storage means to the second encryption processing means is housed in the package and is difficult to access from the outside. The secrecy of the key encryption algorithm can be maintained, and therefore the secrecy of the first encryption key and the instruction content can also be effectively maintained.

  The first decryption processing means and the third key storage means may be formed of a one-chip circuit that integrally includes them in the sub-board. Also in this case, since the path through which the third encryption key is sent from the third key storage means to the first decryption processing means is housed in the package and difficult to access from the outside, the third encryption key and The confidentiality of the asymmetric key decryption algorithm can be maintained, and therefore the confidentiality of the first encryption key and the instruction content can be effectively maintained.

  The first order value generating means initially generates a random value when the power is turned on to obtain an initial value of the first order value, and at least one of the first encryption processing means and the second encryption processing means Encrypts the initial value, the instruction transmitting means transmits the encrypted initial value to the sub-board, and the instruction receiving means receives the encrypted initial value from the main board, and the first decryption processing means and At least one of the second decryption processing means decrypts the encrypted initial value, and the second order value generation means initially uses the decrypted initial value as the initial value of the second order value. Good. In this case, since the initial value of the first order value is changed at least every time the power is turned on, even if the first order value or the initial value is obtained illegally, at least after the next power-on. The same initial value is not used, and the first order value is a different value. Therefore, careless fixation of the first order value and its initial value and vulnerability due to its fraud analysis can be avoided, and the confidentiality of the first encryption key and the instruction content can be effectively maintained.

  The first order value generation means stores in advance a unique value uniquely assigned to each gaming machine as an initial value of the first order value, and the second order value generation means stores an initial value stored by the first order value generation means. The same value as the value may be stored in advance as the initial value of the second order value. In this case, since the initial value is a unique value for each gaming machine, even if the first sequence value or its initial value is illegally acquired in another gaming machine, the same initial value is used in another gaming machine. However, the first order value is a different value. In addition, since the same initial value is stored in the main board and the sub board from the beginning and there is no need to transmit the initial value from the main board to the sub board, there is no worry of illegal analysis in the data path, and the first encryption The confidentiality of the key and the instruction content can be effectively maintained.

  It should be noted that any combination of the above-described constituent elements, or the constituent elements and expressions of the present invention may be mutually replaced between methods, apparatuses, systems, computer programs, recording media storing computer programs, data structures, etc. This is effective as an embodiment of the present invention.

  According to the gaming machine of the present invention, it is possible to make unauthorized analysis and modification of internal data difficult.

It is a figure which shows the basic structure in the front side of a pachinko game machine. It is a figure which shows the basic structure in the back side of a pachinko game machine. It is a figure which shows the functional block of the pachinko game machine in a present Example. It is a figure which shows the detail of the encryption means of FIG. 3, and a decoding means. It is a figure which shows typically a success / failure determination table. It is a figure which shows a symbol determination table typically. It is a figure which shows a fluctuation pattern table typically. It is a flowchart which shows the basic operation | movement process in a pachinko game machine. It is a flowchart which shows the normal game control process of S14 in FIG. 8 in detail. 10 is a flowchart showing in detail the success / failure determination process of S34 in FIG. 9. It is a flowchart which shows the special game of S16 in FIG. 8 in detail.

  FIG. 1 shows a basic structure on the front side of a pachinko gaming machine. Hereinafter, a so-called first type pachinko gaming machine, which is conventionally called as a gaming machine, will be described as an example. The pachinko gaming machine 10 is mainly composed of a gaming machine frame and a gaming board. The gaming machine frame of the pachinko gaming machine 10 includes an outer frame 11, a front frame 12, a transparent plate 13, a door 14, an upper ball dish 15, a lower ball dish 16, and a launch handle 17. The outer frame 11 has an opening and is a frame for fixing the pachinko gaming machine 10 to a position where it should be installed. The front frame 12 is a frame body that aligns with the opening portion of the outer frame 11, and is attached to the outer frame 11 so as to be opened and closed by a hinge mechanism (not shown). The front frame 12 includes a mechanism for launching a game ball, a mechanism for detachably storing a game board, a mechanism for guiding or collecting the game ball, and the like.

  The transparent plate 13 is made of glass or the like and is supported by the door 14. The door 14 is attached to the front frame 12 so as to be openable and closable by a hinge mechanism (not shown). The upper ball tray 15 has a mechanism for storing game balls, sending out the game balls to the launch rail, and extracting the game balls to the lower ball tray 16. The lower ball tray 16 has a mechanism for storing and extracting game balls. A speaker 18 is provided between the upper ball tray 15 and the lower ball tray 16, and a sound effect corresponding to the gaming state or the like is output by means for controlling an effect described later.

  The game board 50 has an out port 58, a special symbol display device 61, an effect display device 60, and a start winning port (hereinafter referred to as “start port”) 62 on a game area 52 defined by the outer rail 54 and the inner rail 56. , A center ornament 64, a grand prize opening 66, an operation opening 68, and a general prize opening 72. Furthermore, in the game area 52, a plurality of mechanisms such as a game nail and a windmill (not shown) are installed.

  The starting port 62 is a starting port that triggers the entrance of a game ball to perform a lottery determination. The starting port 62 is provided in the starting port 62 and a start winning detection device 74 for detecting the entrance of a game ball. A normal electric accessory solenoid 76 for expanding the expansion mechanism 63 (so-called electric tulip) is provided. When the expansion mechanism 63 is expanded, the opening width to the start port 62 is expanded, and the ease of entering the ball is improved. This lottery determination is a lottery for determining whether or not to shift to a special game that is more advantageous to the player than a normal game, and is executed every time there is a ball entering the start port 62. The start winning detection device 74 is a sensor that detects the entry of a game ball into the start port 62, and generates start win information indicating the winning at the time of entering.

  The general winning opening 72 includes a general winning detecting device 73 for detecting the entering of a game ball. The general winning detection device 73 is a sensor that detects the entry of a game ball into the general winning opening 72, and generates general winning information indicating the winning at the time of winning.

  The special winning opening 66 includes a winning detection device 78 for detecting the entry of a game ball and a special winning opening solenoid 80 for expanding the special winning opening 66. The winning detection device 78 is a sensor that detects the entry of a game ball into the big winning opening 66, and generates big winning opening winning information indicating the winning at the time of winning. The big winning opening 66 is a horizontal rectangular winning opening that is opened as a “big hit” in a special game that starts when the special symbol 192 stops in a predetermined manner. The big winning opening 66 is provided at a position above the out opening 58, for example. The number of the big winning openings 66 is not limited to a single arrangement, and a plurality of large winning openings 66 may be installed and used depending on the gaming state or the like. The winning detection device 78 of the big winning opening 66 includes a sensor that detects the passage of a game ball.

  The special symbol display device 61 provided on the left side of the game area 52 and the effect display device 60 provided in the approximate center of the game area 52 have a variation of the special symbol 192 on each screen and a decoration linked to the special symbol 192. Changes in the effect image including the pattern 190 are displayed. Hereinafter, such display is referred to as “design variation” or “variation display”.

  The special symbol display device 61 is a display device composed of, for example, 7 segment LEDs. The special symbol 192 is a symbol corresponding to the result of the lottery performed when the game ball falls into the start port 62. When the symbol mode when the special symbol 192 is stopped is the symbol that is determined in advance, the timing at which the symbol is displayed is the big hit occurrence timing. The stop symbol is a symbol to be displayed at the end of symbol variation. The special symbol 192 in the present embodiment is represented by any number from “0” to “9” which is a winning symbol aspect, or a symbol “−” which is a deviating symbol aspect. These numbers or symbols are replaced one after another at a high speed and displayed on the special symbol display device 61, whereby the symbol variation display of the special symbol 192 is realized. Note that the special symbol 192 is not limited to the above numbers or symbols, and may be letters such as English letters, or may be a generally meaningless symbol formed by a combination of segments constituting a 7-segment LED. May be. Further, the 7-segment LED may be composed of 8 segments including 7 segments forming “eight-letter shape” and 1 segment representing “dot”. In this case, a numerical value for 8 bits can be expressed by combining 8 segments. Further, the special symbol display device 61 may be an LED dot array that is not a 7-segment LED, and a plurality of types of special symbols 192 may be expressed by combinations of lighting patterns and lighting colors.

  The effect display device 60 is a display device configured by a liquid crystal display that displays the decorative symbol 190 in a variable manner in conjunction with the variable symbol display of the special symbol 192. The decorative symbol 190 is a symbol for visually rendering the lottery result display indicated by the special symbol 192. The effect display device 60 displays, as the decorative symbol 190, for example, a plurality of rows of moving images of symbol variation simulating a slot machine game in the central area of the screen. In this embodiment, symbols composed of numbers “0” to “9” are displayed and varied in three columns, and hit or miss is indicated by three symbol combinations that are finally stopped and displayed. Each of the plurality of symbols constituting the decorative symbol 190 is composed of numbers, characters, or symbols that are decorated with colors or patterns. You may comprise in the form which adds a different pattern for every pattern and integrates it. This pattern is a pattern on which a motif related to the theme of decoration or production set for the model of the pachinko gaming machine 10 is drawn, and for example, a pattern on which a character of a person or an animal is drawn may be used. The decorative pattern 190 is switched according to the development of the effect between the case where the design that includes the design is variably displayed and the case where the design is separated and only the numbers, characters, and symbols are variably displayed. It may be a configuration. On the background of the variation display of the decoration symbol 190, a moving image having a staging effect related to the theme of decoration or production set for the model of the pachinko gaming machine 10 is displayed in conjunction with the symbol variation.

  The effect display device 60 is configured by a high-definition dot matrix type display device such as a liquid crystal display in this embodiment, but may be configured by a mechanical display unit such as a drum rotation type or a display unit such as an LED matrix type. Good. Since the special symbol 192 does not necessarily have a role of production, in this embodiment, the special symbol display device 61 on the lower left side of the production display device 60 is displayed in an inconspicuous size. However, in the case of adopting a technique in which the special symbol itself has an effect role to express without using the decorative symbol, the special symbol may be displayed on the liquid crystal display instead of the 7-segment LED.

  The operation port 68 is provided at the left side position of the game board 50. The operation port 68 includes a passage detection device 69. The passage detection device 69 is a sensor that detects the passage of the game ball to the operation port 68, and generates passage information indicating the passage at the time of passage. The passage of the game ball to the operation port 68 triggers an open lottery that determines whether or not the expansion mechanism 63 is expanded. When the game ball passes through the operation port 68, a normal symbol, which is a symbol indicating the result of the open lottery, is variably displayed on the normal symbol display device 59. Therefore, the open lottery is also called “ordinary symbol lottery”. The normal symbol display device 59 in this embodiment is composed of two lamps for convenience, and the display state of the normal symbols is expressed by which of these lamps is lit. For example, when the first lamp is turned off and the second lamp is hit, the normal symbol fluctuation display is expressed by alternately turning on and off, and finally one of the lights is turned on. A stop symbol of a normal symbol is expressed by being stopped in the state. The normal symbol display device 59 is provided on the lower right side of the effect display device 60. After a predetermined time has elapsed since the start of the change, the normal symbol change display stops. At this time, in the normal state, the normal symbol stops at the winning symbol with a low probability of about 1/256, for example, and in the specific gaming state described later, the normal symbol stops at the winning symbol with a high probability of about 250/256, for example. To do. When the normal symbol stops at the winning symbol, the expansion mechanism 63 is expanded for a predetermined time. The opening time of the expansion mechanism 63 is, for example, 0.1 seconds in the normal state and 6 seconds in the specific game state.

  A center ornament 64 is provided around the effect display device 60. The center decoration 64 has functions such as a flow path of the game ball, protection of the special symbol display device 61 and the effect display device 60, and decoration. The special symbol hold display device 20 is provided in the lower left portion of the game area 52, and the normal symbol hold display device 22 is located below the normal symbol display device 59 in the lower right portion of the game area 52, which is a symmetrical position. Is provided.

  The special symbol hold display device 20 is composed of four lamps, and displays the number of lottery holds depending on the number of lights. The number of lottery holds is the number of lottery results won to the start port 62 during symbol variation or special game, and indicates the number of winning balls for which symbol variation has not yet been executed. When the number of lottery holds is three, the symbol variation time in the case of a loss is shortened from the normal time in order to increase game efficiency (hereinafter also referred to as “shortening variation”). Similarly, when the number of pending lottery holds is 4, in order to further increase the game efficiency, the symbol variation time in the case of losing is further shortened than in the case of the above 3 (hereinafter also referred to as “super shortened variation”). ).

  The normal symbol hold display device 22 is also composed of four lamps, and displays the number of normal symbol fluctuation hold depending on the number of lights. The number of normal symbol fluctuations held is the number of game balls that have passed through the operation port 68 during the fluctuation of the normal symbol, and indicates the number of normal symbol lotteries for which the fluctuation of the normal symbol has not yet been executed.

  Game effect lamps 90 are respectively provided above and below the effect display device 60. The operation button 82 is an operation input unit that is operated by the player to input a predetermined instruction to the gaming machine, and changes are made to the contents of the effect according to the contents of the operation input. The operation button 82 is provided on the outer wall surface near the upper ball tray 15. Although the operation button 82 in this embodiment is composed of one button, it may be composed of a plurality of buttons and direction instruction buttons such as a cross key. The movable accessory 140 is a movable object whose operation is controlled in conjunction with the effect, and plays an effect role by the operation. For example, the movable accessory 140 operates in response to an operation input via the operation button 82 by the player.

  An outline of a game method and a control flow performed in the above configuration will be described. When the player turns the launch handle 17 by hand, the game balls stored in the upper ball tray 15 are guided one by one to the inner rail 56 and the outer rail 54 with a strength corresponding to the turning angle, thereby playing the game area. To 52. When the player fixes the rotation position of the firing handle 17 by hand, the game ball is repeatedly fired at regular time intervals. The game ball launched to the upper part of the game area 52 falls in a direction according to the way of hitting while hitting a plurality of game nails and windmills. When a game ball is dropped into each of the general winning port 72, the start port 62, and the big winning port 66, the winning ball corresponding to the type of the winning port is paid out to the upper ball plate 15 or the lower ball plate 16. A game ball dropped into each winning hole such as the general winning hole 72 is processed as a safe ball, and a game ball dropped into the out hole 58 is processed as an out ball. Each winning opening includes a gate type through which a game ball passes. In this application, “incoming”, “entering”, and “winning” include “passing”.

  When the game ball falls into the start port 62, the special symbol 192 and the decorative symbol 190 are variably displayed on the special symbol display device 61 and the effect display device 60. The variation display of the special symbol 192 and the decorative symbol 190 is stopped after the lapse of the variation display time determined prior to the display. The special symbol 192 is variably displayed in accordance with a variation pattern in which a variation mode from the variation start to the stop is determined. The decorative symbol 190 is variably displayed according to a variation effect pattern in which a variation mode from the start to the end of the variation is determined. A plurality of types of variation patterns and variation production patterns are prepared, and each has various variation times. While the special symbol 192 is variably displayed according to the variation pattern, the decorative symbol 190 is variably displayed according to the variation effect pattern having the same variation time. In the variation pattern, a variation display time is determined for each pattern as an end condition of the symbol variation, and the variation of the special symbol 192 and the decorative symbol 190 is stopped when the variation display time elapses.

  As a variation display of the decorative symbol 190, first, as the variation starts, the symbols are varied in all three columns like the reel rotation of the slot machine, and when it approaches the variation end timing, it is stopped one by one as a final stop mode. The symbol combination is displayed. When the special symbol 192 and the decorative symbol 190 at the time of the stop are in a stop mode indicating a big hit, the game shifts to a special game that is more advantageous to the player than the normal game, and the opening / closing operation of the big prize opening 66 is started. The The stop mode of the decorative symbol 190 indicating a big hit is, for example, a combination mode in which the types of three symbols match.

  The variation effect pattern includes a normal disappointing effect pattern when displaying an unacceptable symbol combination and a reach when displaying an unacceptable symbol combination through a reach state that is a big hit if one more symbols are aligned. An outright effect pattern and a reach jackpot effect pattern for displaying a jackpot symbol combination through a reach state are included. In particular, the patterns when reaching the reach state include patterns with various long and short fluctuation times. Reach patterns with relatively short fluctuation times are called “normal reach”, and reach patterns with long fluctuation times are called “super reach”. ".

  The special game is started by displaying an effect screen called start demonstration time. After the start demonstration time is displayed on the screen, the grand prize winning opening 66 is opened, and after the opening lasts for about 30 seconds, or after nine or more game balls have dropped in, it is temporarily closed. From such opening to closing of the big prize opening 66 is basically called a unit game, but it may be repeated a plurality of short-time opening during one unit game. After the special winning opening 66 is opened and closed or the unit game is repeated a predetermined number of times, for example, 15 times, the special game is ended by displaying an effect screen called an end demonstration time.

  In the normal game after the end of the special game, a variable time shortening game (hereinafter referred to as “time reduction” as appropriate) that is one of the specific games is started. In time saving, the variation time of the special symbol 192 and the decorative symbol 190 is shortened compared to the normal state. The variation time of the special symbol 192 and the decoration symbol 190 is returned to the original variation time after a predetermined variation number, for example, 100 variation display, but if the big hit occurs before the variation number is reached, the time is shortened. Also ends. Since the variation time of the special symbol 192 and the decorative symbol 190 is shortened in time reduction, the time until the big hit can be shortened compared to the normal state where the symbol variation is performed with the normal variation time. Therefore, it is possible to relatively increase the jackpot acquisition ease. During the time reduction, a so-called opening extension is executed in which the fluctuation time of the normal symbol is further shortened from the normal state and the expansion time of the expansion mechanism 63 is longer than the normal state. As described above, during the time shortening, the possibility that the number of fluctuations of the normal symbol per certain time will increase from the normal state increases, and the ease of entering the starting port 62 also increases, so the number of entering the starting port 62 Is likely to increase. Therefore, during the short time, the chances of obtaining a winning ball by entering the starting port 62 increase, and as a result, it is possible to continue playing with almost no decrease in possession.

  If a special game occurs and the winning stop pattern at that time is in a specific mode, a probability variation game (hereinafter referred to as “probability change” as appropriate) that is one of the specific games after the special game ends Be started. During the probability change, the winning lottery with a higher probability of winning than the normal probability state is performed, and a new special game can be generated relatively early. In this embodiment, the time reduction is started at the same time as the probability change is started. However, there may be a case where a probability change without a short start is executed.

  FIG. 2 shows a basic structure on the back side of the pachinko gaming machine. The power switch 40 is a switch for turning on / off the power of the pachinko gaming machine 10. The main board 102 controls the overall operation of the pachinko gaming machine 10 and processes all game operations such as a lottery when a winning is made to the start port 62. The sub-board 104 includes a liquid crystal unit 42 and controls display contents on the effect display device 60, operations of the plurality of movable objects 140, and lighting of the game effect lamp 90. And the lighting of the movable accessory 140 and the game effect lamp 90 is activated along with the progress of the production. The main board 102 and the sub board 104 constitute a game control device 100. The set substrate 39 includes a prize ball tank 44, a flow path for prize balls, a payout unit 43 for delivering prize balls. The payout unit 43 pays out the game balls supplied from the winning ball tank 44 to the upper ball tray 15 in accordance with winning in each winning opening. The payout control board 45 controls the payout operation by the payout unit 43. The launching device 46 launches the stored balls in the upper ball tray 15 to the game area 52 one by one. The launch control board 47 controls the launch operation of the launch device 46. The power supply unit 48 supplies power to each part of the pachinko gaming machine 10.

  FIG. 3 shows functional blocks of the pachinko gaming machine 10 in this embodiment. In the pachinko gaming machine 10, the game control device 100 includes a start port 62, a big winning port 66, a general winning port 72, an operating port 68, a special symbol display device 61, an effect display device 60, a normal symbol display device 59, and operation buttons 82. The speaker 18, the game effect lamp 90, and the movable accessory 140 are electrically connected to each other, and can transmit and receive various control signals. The game control apparatus 100 controls not only the basic operation of the game but also the staging operations such as the symbol variation display, the movable accessory 140, and the electric decoration. The game control device 100 is configured in such a manner that functions are shared between a main board 102 that controls the overall operation of the pachinko gaming machine 10 including basic operations of the game, and a sub board 104 that controls design effects and the like. The game control device 100 is configured by hardware including elements such as a ROM and a RAM for storing data and programs, and a CPU used for arithmetic processing.

  In the present embodiment, the main board 102 includes a ball entering determination unit 110, a random number generation unit 111, a winning / failing lottery unit 112, a symbol determination unit 114, a variation pattern determination unit 115, a hold control unit 116, a main display control unit 118, and a special game control. Means 120, specific game execution means 122, opening / closing control means 124, first order value generation means 126, and encryption means 128 are provided. In the present embodiment, the sub-board 104 includes a pattern storage unit 130, a design mode determination unit 131, an effect determination unit 132, a decoding unit 133, an effect display control unit 134, an accessory control unit 136, a second order value generation unit 137, an order. Value comparison means 138 is provided. Each functional block included in the main board 102 may be configured such that any one of the functional blocks is mounted on the sub board 104 instead of the main board 102. Similarly, each functional block included in the sub-board 104 may be configured such that any one of them is mounted on the main board 102 instead of the sub-board 104.

  However, since data transmission / reception between the main board 102 and the sub board 104 is unidirectional from the main board 102 to the sub board 104, each operation is performed so that the entire operation is realized by such data transmission / reception in one direction. The configuration is arranged on the main board 102 and the sub board 104. In this way, since the unidirectionality of data transmission from the main board 102 to the sub board 104 is maintained, data cannot be transmitted from the configuration included in the sub board 104 to the configuration included in the main board 102. It is not possible to request data transmission. Therefore, the information generated on the main board 102 cannot be referred to from the sub board 104 unless the main board 102 unilaterally transmits the information to the sub board 104.

  The entrance determination means 110 determines whether or not a game ball has entered each winning opening. When receiving the start winning information, the winning determination means 110 determines that the game ball has won the start opening 62, and when receiving the big winning opening winning information, determines that the game ball has won the big winning opening 66, and the general winning is obtained. When the information is received, it is determined that the game ball has won the general winning opening 72. When receiving the passage information, the ball entering determination unit 110 determines that the game ball has passed through the operation port 68.

  The random number generation means 111 generates random numbers used for lotteries such as a success / failure lottery, a symbol determination lottery, and a variation pattern determination lottery described later. For example, the success / failure lottery value is acquired from a value range from “0” to “65535”. The “random number” in the present application may not be a mathematically generated random number, but may be a pseudo-random number generated by a hardware random number, a software random number, or the like. For example, a pseudo random number is generated by extracting a count value counted from a predetermined initial value at a timing such as a ball entering the start port 62.

  The success / failure lottery means 112 uses a random number value as a success / failure lottery value to determine whether or not to shift to a special game that is more advantageous to the player than the normal game when the starting hole 62 is entered. Obtained from the generation unit 111. The value acquired as the success / failure lottery value by the success / failure lottery means 112 is temporarily held by the hold control means 116. However, the lottery value is held within a range not exceeding the predetermined holding upper limit number.

  The success / failure lottery means 112 holds a plurality of success / failure tables to be referred to in the success / failure determination. In the plurality of success / failure tables, a determination result of winning or losing is associated with a winning / losing lottery value, and the probability of success / failure is determined according to the associated winning range setting. The success / failure lottery means 112 refers to a success / failure table for determination of success / failure based on a normal probability in normal times, and refers to a success / failure table in which the probability of winning is higher than the normal probability when the probability changes. The success / failure lottery means 112 refers to any of the plurality of success / failure tables and determines whether or not the success / failure lottery value is a win.

  FIG. 5 is a diagram schematically showing the success / failure determination table. The success / failure determination table in this figure associates determination results of big hits, small hits and misses, and winning / failing lottery values. Depending on the respective range settings, the hit / failure probabilities of big hits and small hits are determined. Is determined. The success / failure lottery means 112 refers to the success / failure determination table of FIG. In the success / failure lottery by the success / failure lottery means 112, a big hit is made only when the success / failure lottery value falls within the range of 0 to 399 in normal times. At the time of certainty change, the range of the big hit is expanded, and not only when the success / failure lottery value falls within the range of 0 to 399, but also when it falls within the range of 400 to 2999. Thus, the range corresponding to the big hit changes according to the gaming state. In this figure, the single hit / fail judgment table shows the big hit range for both normal time and probability change, but the success / fail judgment table may be prepared separately for normal time and for probability change.

  In the present embodiment, even if the winning / raising lottery value does not correspond to the big hit range, that is, a so-called out of range, it becomes a small hit if it falls within the predetermined range. In the example of this figure, when the success / failure lottery value acquired by the success / failure lottery means 112 falls within the range of 65000 to 65535, it is a small hit. In this way, if it does not correspond to the big hit, it is all “out”, but in the example in this figure, the winning lottery value range when it does not correspond to the small hit out of the cases where it does not correspond to the big hit Is expressed as “displacement”. In addition, although the example which implement | achieved the determination table of whether it is a big hit and the determination table of whether it is a small win in the figure in the form of a single winning / nothing determination table was shown in this figure, each may be implement | achieved as a separate table. Good.

  Returning to FIG. 3, the determination result by the success / failure lottery means 112 is variably displayed in a special symbol form on the special symbol display device 61. In addition, a decorative symbol that shows the determination result by the success / failure lottery means 112 in an effect manner is variably displayed on the effect display device 60. The encryption unit 128 encrypts the lottery result corresponding to the symbol variation together with the symbol variation control command and transmits the result to the decryption unit 133 at the timing of starting the symbol variation.

  The symbol determination means 114 determines the stop symbol of the special symbol to be displayed on the special symbol display device 61 according to the lottery result by the success / failure lottery means 112. The symbol determination means 114 holds a symbol range table to be referred to in order to determine a special symbol stop symbol. The symbol determination unit 114 acquires a random number as a symbol determination lottery value for determining a special symbol from the random number generation unit 111, and stops the special symbol in accordance with the result of determination of success / failure by the determination of lottery unit 112 and the symbol determination lottery value. Determine the design.

  The symbol determination means 114 determines the stop symbol of the normal symbol to be displayed on the normal symbol display device 59 by lottery. The symbol determining means 114 acquires a random number of the lottery value from the random number generating means 111 as a normal symbol lottery for determining a normal symbol when the game ball passes through the operation port 68. The symbol determination means 114 determines the stop symbol of the normal symbol according to the acquired lottery value in order to display the result of the normal symbol lottery on the normal symbol display device 59 in the form of the normal symbol. The symbol determination unit 114 holds a symbol determination table in which the correspondence between the lottery value and the normal symbol is determined, and determines the stop symbol of the normal symbol corresponding to the lottery value with reference to the symbol determination table. When the determined stop symbol becomes a predetermined symbol, it is determined that the normal symbol is a hit, and after the change display of the normal symbol is stopped at the stop symbol, the opening / closing control means 124 is The electric accessory is expanded for a predetermined time. The lottery value of the normal symbol is temporarily held by the hold control means 116. However, the lottery value is held only when the predetermined hold upper limit number held by the hold control means 116 is not exceeded.

  The symbol determination unit 114 sends data indicating the determined stop symbol to the symbol mode determination unit 131 and the effect determination unit 132 via the encryption unit 128 and the decryption unit 133.

  FIG. 6 is a diagram schematically showing a symbol determination table. FIG. 6A is a table that is referred to when the determination result is a big hit, FIG. 6B is a table that is referred to when the determination result is wrong, and FIG. This table is referred to when the determination result is a small hit. The symbol determination means 114 refers to the symbol determination table of this diagram in symbol determination. In each symbol determination table, the correspondence between the special symbol represented by the numbers “0” to “9” and the symbol “−” and the symbol lottery value is defined. Each type of special symbol is associated with the result of determining whether or not the big hit, small hit, or missed, the odd number corresponds to the big hit, the even number corresponds to the small hit, and the symbol “-” is out. Correspond.

  As shown in FIG. 6A, the special symbols “1”, “3”, “5”, “7”, and “9”, which are odd numbers among the special symbols “0” to “9”, are associated with the jackpot. . Among them, the special symbol “7” indicates a 15R jackpot with certainty and is associated with a symbol lottery value range “0 to 99”. The special symbol “3” indicates a 2R jackpot with certainty and is associated with a symbol lottery value range “100 to 149”. Special symbols “1”, “5”, and “9” indicate 15R big hits without any probability change, the special symbol “1” is associated with the symbol lottery value range “150 to 189”, and the special symbol “190 to 229”. “5” is associated with, and “230 to 255” is associated with the special symbol “9”.

  As shown in FIG. 6 (b), the special symbol “-” is associated with the symbol lottery values in the entire range when the result of the determination is wrong.

  As shown in FIG. 6C, the special symbols “0”, “2”, “4”, “6”, and “8” that are even numbers among the special symbols “0” to “9” are associated with the small hits. Yes. The special symbol “0” is associated with the symbol lottery value range “0-49”, the special symbol “2” is associated with the symbol lottery value range “50-99”, and the special symbol “4” is symbol lottery. The special symbol “6” is associated with the symbol lottery value range “150 to 199”, and the special symbol “8” is the symbol lottery value range “200 to 255”. Is associated with.

  Returning to FIG. 3, the variation pattern determination unit 115 selects any variation pattern from a plurality of types of variation patterns based on the random number acquired from the random number generation unit 111 as a variation pattern lottery value according to the result of the success / failure lottery. . The variation pattern determining means 115 holds a pattern selection table to be referred to in order to determine the variation pattern. The variation pattern determination unit 115 sends data indicating the determined variation pattern to the symbol form determination unit 131 and the effect determination unit 132 via the encryption unit 128 and the decryption unit 133. The variation pattern determination unit 115 stores a plurality of types of variation patterns. A plurality of types of variation patterns are defined on the assumption that there are various variation times, short and long, and that symbol variation is also performed by a decorative symbol composed of a plurality of symbols in the variation time. In each variation pattern, a variation display time is defined for each pattern as an end condition of the symbol variation, and the variation of the special symbol and the decorative symbol is stopped when the variation display time elapses.

  FIG. 7 is a diagram schematically showing the variation pattern table. The variation pattern determining means 115 refers to the variation pattern table for removal shown in FIG. 7A when the result of the determination is wrong. When the determination result is a 15R jackpot, the fluctuation pattern table for 15R jackpot shown in FIG. 7B is referred to. When the determination result is 2R big hit or small hit, the variation pattern table for 2R big hit and small hit shown in FIG. 7C is referred to.

  In FIG. 7A, the pattern lottery values 0 to 10 are associated with a super reach “super 1”, and the pattern lottery values 11 to 20 are associated with a super reach “super 2”. The pattern lottery values 21 to 255 are associated with any variation pattern of “normal 1”, “normal 2”, and “no reach”. As described above, when the result of the determination is wrong, any one of super reach, normal reach, and no reach may be selected. In the variation pattern table for detachment, when a variation pattern of “no reach” is selected, a different table is referred to so that a variation pattern having a shorter variation time than the normal state is selected in the short time state.

  In FIG. 7B, the super lot of “super 1” is associated with the pattern lottery values 0 to 120, and the super reach of “super 2” is associated with the pattern lottery values 121 to 240. The pattern lottery values 241 to 250 are associated with the reach of “normal 1”, and the pattern lottery values 251 to 255 are associated with the reach of “normal 2”. As described above, when the determination result is 15R big hit, the variation pattern with reach is selected.

  In FIG. 7C, the pattern lottery values 0 to 122 are associated with the super reach “super 3”, and the pattern lottery values 123 to 255 are associated with the normal reach “normal 3”. As described above, when the determination result is 2R big hit or small hit, “Super 3” or “Normal 3” is selected with a probability of about 50%.

  Returning to FIG. 3, the holding control means 116 displays a symbol change corresponding to the previous entry or lottery when there is a new entry at the start port 62 and a new pass / fail lottery is executed. The result of the success / failure lottery based on the new entry is put on hold until the start of the variable display of the symbol corresponding to the lottery. In the present embodiment, as a result of the lottery determination, the number of the lottery is held as a holding ball with an upper limit of four. The holding control means 116 further holds the usual lottery value acquired by the success / failure lottery means 112 as a holding ball. These numbers of holdings are represented by the number of lighting or blinking numbers of the special symbol holding display device 20 and the normal symbol holding display device 22, respectively.

  The main display control means 118 causes the special symbol display device 61 to display the lottery result by the success / failure lottery means 112 as a variation display of the special symbol 192 according to the variation pattern determined by the variation pattern determination unit 115. The main display control means 118 sets a new symbol variation start condition that the symbol variation display corresponding to the success / failure lottery performed before that has ended. The main display control means 118 sends the change start command and the change stop command through the encryption process by the encryption means 128 and the decryption process by the decryption means 133 at the timing to start and stop the fluctuation display of the special symbol 192. This is sent to the effect display control means 134. When sending the change start command, the encryption unit 128 encrypts the values indicating the determination result or the determined determination result, the stop symbol, and the change pattern together with the change start command and transmits them to the decryption unit 133. When transmitting the change stop command, the encryption unit 128 may encrypt a value indicating the stop symbol together with the change stop command and transmit it to the decryption unit 133. Thereby, the fluctuation display by the main display control means 118 and the effect display control means 134 is synchronized, and the interlock is maintained. The main display control means 118 displays the result of the normal symbol lottery on the normal symbol display device 59 as a normal symbol variation display.

  The special game control means 120 indicates that the special game operation condition is established when the special symbol 192 is stopped in a predetermined big hit mode when the success / failure lottery by the success / failure lottery means 112 results in the transition to the special game. A special game is executed by determining and opening the special winning opening 66. The special game is a game in which the opening / closing operation of the special winning opening 66 is continuously performed a plurality of times, and is configured by a plurality of unit games with one opening / closing as a unit. Special games include a 15R jackpot that repeats a unit game 15 times and a 2R jackpot that repeats a short unit game only twice. In the case of 15R jackpot, in principle, the big winning opening 66 is opened for about 30 seconds in one unit game. The special game control means 120 ends the special game when the set round number of unit games is exhausted.

  The specific game execution means 122 controls the normal game in the state of probability change and short time. The specific game execution means 122 shifts the game state to the short-time state after the end of the special game. On the other hand, the transition to the probability variation state after the end of the special game is limited to the case where the symbol determined by the symbol determination means 114 is a big hit symbol accompanied by the transition to probability variation. The time-short state is continued until the number of times that the special symbol 192 is changed is counted from the end point of the special game to a predetermined number of end conditions, for example, 100 times. In the short time state, the fluctuation pattern determining means 115 selects a fluctuation pattern having a short fluctuation time so that the fluctuation display time of the special symbol 192 is substantially shortened. However, in a normal state, a variation pattern table corresponding to the number of holds of the result of lottery determination by the hold control unit 116 is referred to, and a change pattern with a long variation time is likely to appear as the number of hold by the hold control unit 116 decreases. On the other hand, the probability variation state is continued until a special game with the next jackpot is executed. During the probable change state, the probability that the success / failure determination result by the success / failure lottery means 112 is a big hit is maintained at a high value.

  The opening / closing control means 124 controls the opening / closing of the ordinary electric accessory at the start opening 62 and the special winning opening 66. When the normal symbol is stopped at a specific symbol, the opening / closing control unit 124 sends an opening instruction to the ordinary electric accessory solenoid 76 to open the start port 62. Further, the opening / closing control means 124 sends an opening instruction to the special winning opening solenoid 80 during the special game, and opens the special winning opening 66.

  Each time a command is generated by the success / failure lottery unit 112, the symbol determination unit 114, the variation pattern determination unit 115, etc., the first sequence value generation unit 126 generates a first sequence value indicating the sequence of processing corresponding to the command. Generate. The first order value is used by the encryption unit 128 for encryption together with various instructions. The encrypted first order value is decrypted by the decryption unit 133 and compared with the order value of the sub-board 104. Is done. The first order value generation means 126 initially uses the unique value uniquely assigned to each gaming machine as the initial value of the first order value, and changes the initial value according to a predetermined order value generation rule. Generate an order value of 1. Thereafter, each time various instructions are generated, the first sequence value is generated by changing the previously generated first sequence value according to the sequence value generation rule. As a simple method, each time various instructions are generated, the order value for the previous instruction may be added by 1 to obtain a new first order value. As a modified example of the initial value of the first sequence value, a random value may be generated and used as the initial value when the power is turned on. In that case, the first order value generation unit 126 transmits the encrypted initial value to the decryption unit 133 through the processing by the encryption unit 128.

  The encryption unit 128 encrypts the instruction including the contents and various control commands determined by the success / failure lottery unit 112, the symbol determination unit 114, the variation pattern determination unit 115, and the like and the first order value, and transmits them to the decryption unit 133. . Further, the encryption unit 128 further encrypts the first encryption key and transmits it to the decryption unit 133.

  The decryption unit 133 receives and decrypts the instruction and the first order value encrypted by the encryption unit 128. The decryption unit 133 receives and decrypts the first encryption key encrypted by the encryption unit 128.

  Each time the decoding unit 133 receives an instruction, the second order value generation unit 137 generates a second order value indicating the order of processing according to the instruction. The second order value generation means 137 initially uses the same eigenvalue as that of the first order value generation means 126 as the initial value of the second order value, and is initialized according to the same order value generation rules as the first order value generation means 126. A second order value is generated by changing the value. Thereafter, every time the decoding unit 133 receives an instruction, the second order value generated last time is changed according to the order value generation rule to generate the second order value. Therefore, it is assumed that the first order value and the second order value always match. As a modified example, a random value generated when the power is turned on as the initial value of the first order value may be received via the decoding unit 133 and used as the initial value of the second order value.

  The order value comparison unit 138 authenticates the first order value by comparing the first order value generated by the first order value generation unit 126 and the second order value generated by the second order value generation unit 137. By determining whether or not the first order value matches the second order value, it is authenticated that the first order value transmitted via the encryption unit 128 is a correct value. When it is authenticated that the value is correct, the transmitted command is also legitimate data, and it is authenticated that the main board 102 is also a legitimate board. As a result of the comparison, if the order values do not match, the transmitted command may be discarded, or a notification indicating that they do not match may be output to an external gaming machine management device.

  The pattern storage means 130 holds a plurality of effect patterns in which effect image contents to be displayed on the effect display device 60 in the variation of the decorative design 190 and the display process thereof are determined. The effect pattern is displayed separately from a plurality of variable effect patterns in which the change process from start to stop of the change and the change process in the change display of the decorative pattern 190 and the change display of the decorative pattern are displayed, and the degree of expectation for the jackpot And a plurality of notice effect patterns that imply the height as a precursor before stopping the variable display.

  The effect determining unit 132 displays the content of the effect to be displayed on the effect display device 60 by the effect display control unit 134 according to the data such as the result of the lottery determination or the variation pattern of the special symbol included in the instruction decoded by the decoding unit 133. decide. The effect determining unit 132 selects any one of a plurality of variation effect pattern data corresponding to the variation pattern of the special symbol determined by the variation pattern determining unit 115 and reads out the selected pattern from the pattern storage unit 130. Information is sent to the effect display control means 134. The effect determining means 132 holds a pattern table that should be referred to in order to select a variable effect pattern.

  Each variation effect pattern has a variation time for each pattern as an end condition of the symbol variation, and the symbol variation is stopped when the variation time elapses. The effect determining unit 132 selects a variation effect pattern of the effect image having the same variation time according to the variation pattern of the special symbol.

  The symbol form determining means 131 determines the combination of stop symbols of the decorative symbol 190 and their arrangement according to the result of the lottery by the winning / failing lottery means 112, the special symbol stop symbol, the special symbol variation pattern, and the decorative symbol variation effect pattern. decide. The symbol form determination unit 131 transmits information indicating the determined combination of stop symbols to the effect display control unit 134. The symbol form determining means 131 holds a symbol range table to be referred to in order to determine the stop symbol of the decorative symbol.

  The stop symbol of the decorative symbol 190 is formed as a combination of three symbols. For example, when the determination result of the success / failure lottery means 112 indicates a transition to a special game of 15R jackpot, a specific combination such as “777” or “ A combination of three symbols such as “111” is selected. In this case, it is preferable that the same number as the special symbol 192 is selected as the number to be arranged as the decorative symbol 190. For example, when the special symbol 192 is “7”, the decorative symbol 190 is “777”. A specific combination, for example, a predetermined combination such as “357” is also selected when the result of the determination is a 2R big hit or a small hit, but the specific combination is not necessarily a combination of three symbols. It does not have to be. When the determination result is neither big hit nor small hit, it is a combination in which three symbols such as “312” and “946” are not arranged, and a specific combination selected at the time of 2R big hit or small hit A combination that does not apply is selected. When the determination result is not 15R big hit, and a variation pattern indicating a loss with reach is selected, a combination with only one symbol such as “191” or “727” is selected. .

  The notice effect pattern is an effect pattern for temporarily displaying an image, animation, video, or the like of a specific character or motif, or an effect pattern for outputting a specific sound. The effect by the notice effect pattern is executed in parallel with the symbol variation, and suggests that the symbol variation is highly expected to stop in the big hit mode. For example, there are a normal notice effect in which only one character image is displayed on the screen, and a group notice effect in which a large number of characters are displayed so as to pass from one end to the other end of the screen. Further, the display process of the notice effect is divided into a plurality of stages, and the number of stages to be displayed is made variable, and a step-up notice effect that is set such that the greater the number of stages is, the higher the degree of expectation for jackpot is included.

  The notice effect pattern includes a pattern in which the effect is executed at a timing after the display form of the decorative symbol 190 reaches the reach state and the final stop state of the symbol is notified, and no decorative symbol 190 is stopped. There is a pattern in which the performance is executed at the timing and the reach is reached at the same time.

  The effect determining means 132 determines whether or not to display the notice effect on the effect display device 60 according to the result of the lottery determination, makes a precursor setting, and determines the notice effect pattern to be displayed. . The effect determining means 132 holds a notice determination table that should be referred to in order to determine whether or not to display the notice effect, and a notice type table that should be referred to when selecting the type of the notice effect pattern. The notice decision table is set so that different columns are referred to depending on the result of the lottery, and if the lottery is a win, the notice lottery will be displayed with a higher probability than if it was missed. Correspondence between whether to display the result and the notice effect is determined. Thereby, the high expectation degree to the big hit can be suggested by displaying the notice effect itself.

  The effect display control means 134 displays the effect image including the decorative pattern on the effect display device 60 according to the selected change effect pattern data as a result of the success / failure lottery by the success / failure lottery means 112. The effect display control means 134 sets a new symbol variation start condition to receive the variation start command for the decorative symbol 190 included in the decoded command.

  When it is determined by the effect determining unit 132 that the notice effect is displayed, the effect display control means 134 superimposes the notice effect in accordance with the selected notice effect pattern on the effect of symbol variation to the effect display device 60. Display. The effect display control means 134 further controls effect processing such as lighting and extinguishing of the game effect lamp 90 and sound output from the speaker 18.

  In accordance with the instruction received from the effect display control means 134, the accessory control means 136 causes the movable accessory 140 to act in an effect manner in accordance with the effect contents in the effect display device 60 and the blinking process of the game effect lamp 90.

  FIG. 4 shows details of the encryption unit 128 and the decryption unit 133 of FIG. The encryption unit 128 includes a first key generation unit 200, a first encryption processing unit 202, a second key storage unit 204, a second encryption processing unit 206, and an instruction transmission unit 208. The encryption unit 128 is formed by a one-chip circuit that integrally includes its internal configuration, and is mounted on the main board 102.

  The first key generation means 200 generates a first encryption key, which is a temporary symmetric key, using a predetermined key generation algorithm. The first key generation means 200 generates a first encryption key using a value acquired from the random number generation means 111 at a predetermined timing after the pachinko gaming machine 10 is turned on. In the present embodiment, the first key generation means 200 generates the first encryption key every time the pachinko gaming machine 10 is turned on, and the first encryption key is generated again every time the winning / failing lottery is performed. However, as a modification, it may be generated only once immediately after the power is turned on, or may be generated not every time the power is turned on but every time a lottery is made. The value acquired from the random number generation unit 111 to generate the first encryption key may be a random number used in the lottery in the success / failure lottery unit 112, the symbol determination unit 114, the variation pattern determination unit 115, or the like. It may be a count value acquired at the timing of generating the encryption key. As described above, the first encryption key is generated as an indefinite value based on a random value at a predetermined timing.

  Since the first encryption key is generated based on the random value acquired from the random number generation unit 111, inadvertent fixation of the first encryption key can be avoided, and the security and confidentiality of the key are increased. Can be maintained. In addition, in order to realize such a configuration, it is easy to implement by utilizing a random number used for lottery determination, stop symbol lottery, variation pattern lottery or the like, which is an essential component or process for pachinko gaming machine 10, or a count value therefor I have to. In addition, since the first encryption key is set to an indefinite value as a temporary key, even if the same command is transmitted, if it is encrypted with a different encryption key, the transmitted data will be different, and illegal analysis will be performed. It will also be difficult. Even if the first encryption key is decrypted by unauthorized analysis, the encryption key is changed at least every time the power is turned on, and the same key is not used after the next power-on. In addition, since the encryption key is changed every time the winning / failing lottery, the same key is not used in the next winning / losing lottery. If the first encryption key is newly regenerated, the illegal decryption result becomes meaningless. Thus, since the confidentiality of the first encryption key is maintained, it is possible to make it difficult to analyze the content of the command to be transmitted. Further, since it becomes difficult to analyze the contents of instructions, it becomes difficult to make a counterfeit board by misusing the results of such analysis, and illegal acts can be effectively prevented.

  The first encryption processing unit 202 obtains the first encryption key from the random number generation unit 111, and converts the instruction to be transmitted from the main board 102 to the sub board 104 into a symmetric key encryption method using the first encryption key. To encrypt. Specifically, the contents determined by the success / failure lottery means 112, the symbol determination means 114, the variation pattern determination means 115, etc., the instructions including various control commands, and the first order value are encrypted.

  The second key storage unit 204 stores a second encryption key different from the first encryption key in advance. The second encryption key is an asymmetric key used in the asymmetric key encryption method, and forms a key pair with a third encryption key stored in the decryption means 133 in advance. For example, a key corresponding to a public key in the public key cryptosystem may be used.

  The second encryption processing unit 206 encrypts the first encryption key and the first order value by an asymmetric key encryption method using the second encryption key. In the present embodiment, both the first encryption processing means 202 and the second key storage means 204 encrypt the first sequence value, but as a modification, the first encryption processing means 202 and the second key storage means 204 are encrypted. Only one of the two encryption processing means 206 encrypts the initial value of the first order value.

  The command transmission unit 208 transmits the encrypted command and the first order value, and the encrypted first encryption key and the first order value to the decryption unit 133. As a modification, the command transmission unit 208 further transmits the encrypted initial value of the first order value to the decryption unit 133.

  Since the path through which the second encryption key is sent from the second key storage unit 204 to the second encryption processing unit 206 is housed in the package and difficult to access from the outside, the second encryption key and the asymmetric key The confidentiality of the encryption algorithm can be maintained, and therefore the confidentiality of the first encryption key and the content of the instruction can be effectively maintained.

  The decryption unit 133 includes an instruction receiving unit 210, a third key storage unit 212, a first decryption processing unit 214, and a second decryption processing unit 216. The decoding means 133 is formed by a one-chip circuit that integrally includes its internal configuration, and is mounted on the sub-board 104.

  The instruction receiving unit 210 receives the encrypted instruction and the first order value, and the encrypted first encryption key and the first order value from the encryption unit 128. As a modification, the instruction receiving unit 210 further receives the encrypted initial value of the first order value from the encryption unit 128.

  The third key storage unit 212 stores in advance a third encryption key that is an asymmetric key pair with the second encryption key. The third encryption key is an asymmetric key used for decryption by an asymmetric key encryption method. For example, a key corresponding to a secret key in the public key cryptosystem may be used. The first decryption processing unit 214 decrypts the encrypted first encryption key and the first order value using the third encryption key.

  The second decryption processing unit 216 receives the decrypted first encryption key from the first decryption processing unit 214 and decrypts the encrypted instruction using the first encryption key. However, the second decryption processing means 216 decrypts the instruction on condition that the decrypted first order value is authenticated by comparison with the second order value. The second decryption processing means 216 decrypts the encrypted first order value by using the first encryption key, and the order value between the first order value decrypted by the first decryption processing means 214. You may make it compare with the comparison means 138. FIG. Alternatively, the encrypted first order value is decrypted using the first encryption key, and compared with the second order value generated by the second order value generating means 137 to the order value comparing means 138. You may let them.

  Since the path through which the third encryption key is sent from the third key storage unit 212 to the first decryption processing unit 214 is housed in the package and is difficult to access from the outside, the third encryption key and the asymmetric key decryption The secrecy of the algorithm can be maintained, and therefore the secrecy of the first encryption key and the instruction content can be effectively maintained.

  FIG. 8 is a flowchart showing a basic operation process in the pachinko gaming machine. First, processing is executed when a game ball enters the start opening 62, the general winning opening 72, the big winning opening 66, etc. (S10). A game control process is executed (S14), and if a special game is in progress (Y in S12), a special game control process is executed (S16), and various winnings are awarded with the number of winning balls set in the winning process of S10. The award ball payout corresponding to is processed (S18).

  FIG. 9 is a flowchart showing in detail the normal game control process of S14 in FIG. In the normal game control process, if the winning / losing lottery value is on hold (Y in S30) and the symbol variation is not being displayed (N in S32), the winning / losing lottery means 112 executes the determining process. At the same time, various commands are encrypted and sent from the main board 102 to the sub-board 104 (S34). The main display control means 118 starts changing display according to the determination result, and the effect display control means 134 that receives the command starts changing display of the effect image according to the changing effect pattern (S36). If the winning or failing lottery value is not held in S30 (N in S30), the processing from S32 to S36 is skipped, and if the symbol variation is being displayed in S32 (Y in S32), S34 and S36 Is skipped. Subsequently, if the symbol variation display has already started (Y in S38), the symbol variation display process is executed (S40). If the symbol variation display has not started (N in S38), S40 is skipped. .

  FIG. 10 is a flowchart showing in detail the success / failure determination process of S34 in FIG. First, the success / failure lottery means 112 reads the success / failure lottery value (S50), the first key generation means 200 generates the first encryption key (S52), and the success / failure lottery means 112 determines the success / failure based on the success / failure lottery value. (S54). The symbol determination unit 114 determines a special symbol stop symbol based on the result of the determination (S56), and the variation pattern determination unit 115 selects the variation pattern of the special symbol (S58). Thus, when the instruction is generated by the success / failure lottery means 112, the symbol determination means 114, the variation pattern determination means 115, etc., the first order value generation means 126 reads the first order value corresponding to the previous instruction and newly The first order value is generated (S60), and the first encryption processing means 202 receives the instruction determined by the success / failure lottery means 112, the symbol determination means 114, the variation pattern determination means 115, etc. together with the first order value. (S62), the second encryption processing unit 206 encrypts the first encryption key and the first order value using the second encryption key (S64). Is transmitted to the command receiving unit 210 (S66).

  The instruction receiving means 210 receives the encrypted data transmitted from the instruction transmitting means 208 (S68), and the first decryption processing means 214 receives the encrypted first encryption key and the first order value as the third encryption. Decryption is performed using the key (S70), and if the first order value matches the second order value as a result of the comparison processing by the order value comparison means 138 (Y in S72), the encrypted instruction is Decryption processing means 216 decrypts using the first encryption key (S74), and in accordance with the command, effect determination means 132 selects a stop symbol combination of decoration symbols or a variation effect pattern of decoration symbols (S76). If the first order value does not match the second order value, S74 and S76 are skipped (N in S72). The first order value decoded by the first decoding processing means 214 in S72 and the first order value decoded by the second decoding processing means 216 are further compared by the order value comparing means 138 after S74. It is also possible for the effect determining means 132 to select a decorative symbol stop symbol combination or a decorative symbol variation effect pattern on condition that the two match (S76). Alternatively, the first order value and the second order value decoded by the second decoding processing means 216 are further compared by the order value comparing means 138 after S74, and the effect determining means 132 is conditioned on the condition that they match. It is also possible to select a stop symbol combination of a decorative symbol or a variation effect pattern of a decorative symbol (S76). As a modification, when the order values do not match, the order value comparison means 138 may output a notification that there is a mismatch to the gaming machine management device outside the pachinko gaming machine 10, A notification lamp indicating that there is a mismatch may be turned on. If they do not match, the instruction decoding and the selection of the variation effect pattern may be executed as usual without skipping S74 and S76 instead of informing the outside. In addition, in this figure, the example which encrypts the instruction | command determined by the success / failure lottery means 112, the symbol determination means 114, the fluctuation pattern determination means 115, etc. was demonstrated. Similarly, the instructions determined by the main display control means 118, the special game control means 120, the specific game execution means 122, the hold control means 116, and the opening / closing control means 124 are also encrypted or decrypted by the processes of S52 and S60 to S74. .

  FIG. 11 is a flowchart showing in detail the special game of S16 in FIG. First, when the special winning opening 66 has not been opened yet (N in S300), the production display control means 134 starts the special game production process (S302), and the opening / closing control means 124 opens the special winning prize port 66 (S304). ). If the big winning opening 66 has been opened, S302 and S304 are skipped (Y in S300). If the predetermined opening time has elapsed since the grand prize opening 66 was opened (Y in S306), or the opening time has not elapsed (N in S306), the number of balls entered into the big winning hole 66 is When nine or more balls have been reached (Y in S308), the opening / closing control means 124 closes the special winning opening 66 (S310). If the opening time has not elapsed (N in S306) and the number of balls entered into the grand prize opening 66 has not reached nine or more (N in S308), the processing after S310 is skipped and the flow of S16 Exit.

  If the unit game has reached the final round after closing the big prize opening 66 in S310 (Y in S312), the effect display control means 134 ends the effect processing of the special game (S314), and the special game control means 120 The special game is ended (S316), and the specific game, that is, the execution of probability change and time reduction is started (S318). If the unit game has not reached the final round (N in S312), 1 is added to the number of rounds and the flow in S16 is terminated (S319).

  In the above, this invention was demonstrated based on the Example. This embodiment is merely an example, and it will be understood by those skilled in the art that various modifications can be made to the combination of each component and each processing process, and such modifications are within the scope of the present invention. is there.

  In the above embodiment, a pachinko gaming machine has been described as an example of a gaming machine. In a modified example, the present invention may be realized as a rotating type gaming machine. In the case of a revolving game machine, when the player inserts a game medal as a game medium and operates the start lever, the revolving reel rotates, and the symbols that are stopped according to the operation of the stop switch form a predetermined role. Sometimes it moves to a state that is advantageous to the player. In this case, the game lottery means determines a combination such as a big bonus, a regular bonus, a small combination, or a replay by the game lottery.

  50 game board, 52 game area, 102 main board, 104 sub-board, 111 random number generation means, 112 unsuccessful lottery means, 114 symbol determination means, 115 variation pattern determination means, 126 first order value generation means, 128 encryption means, 132 production determination means, 133 decryption means, 134 production display control means, 137 second order value generation means, 138 order value comparison means, 200 first key generation means, 202 first encryption processing means, 204 second key storage means , 206 second encryption processing means, 208 command transmitting means, 210 command receiving means, 212 third key storage means, 214 first decryption processing means, and 216 second decryption processing means.

Claims (5)

Random number generating means for generating a random number used in a game lottery for giving a profit to a player in a game ;
Game lottery means for executing the game lottery using the random numbers ;
Each time an instruction indicating the content determined by the game lottery means is generated, the first order value indicating the order of processing indicated by the instruction is changed, and the order value of the previous process is changed according to a predetermined order value generation rule. First order value generating means for generating
A display device on which a result of the game lottery is displayed;
Encryption means for encrypting and transmitting a command indicating the content determined by the game lottery means;
Decryption means for receiving and decrypting the encrypted instruction;
Production determination means for determining content to be displayed on the display device in accordance with the command,
Effect display control means for displaying effect contents based on the determination by the effect determining means on the display device;
Second order value generation means for generating a second order value indicating the order of processing according to the instruction every time the instruction is received by changing the order value of the previous processing according to the order value generation rule;
Order value comparison means for authenticating the first order value by comparing the first order value and the second order value;
The random number generation means, the game lottery means, the first order value generation means, and the encryption means are provided on a main board that controls the progress of the game,
The decoding means, the effect determining means, the effect display control means, the second order value generating means, and the order value comparing means are provided on a sub-board that controls the effect display,
The encryption means includes
First key generation means for generating a first encryption key, which is a temporary symmetric key, using the random number acquired from the random number generation means at a predetermined timing after power-on;
First encryption processing means for encrypting a command to be transmitted from the main board to the sub-board by a symmetric key encryption method using the first encryption key;
Second key storage means in which a second encryption key different from the first encryption key is stored in advance;
Second encryption processing means for encrypting the first encryption key by an asymmetric key encryption method using the second encryption key;
Command transmitting means for transmitting the encrypted command, the encrypted first encryption key, and the first sequence value to the sub-board,
The decoding means includes
Command receiving means for receiving the encrypted command, the encrypted first encryption key, and the first sequence value from the main board;
Third key storage means in which a third encryption key that is an asymmetric key pair with the second encryption key in the asymmetric key cryptosystem is stored in advance;
First decryption processing means for decrypting the encrypted first encryption key using the third encryption key;
A second decryption process for decrypting the encrypted instruction using the decrypted first encryption key on the condition that the decrypted first order value is authenticated by the second order value. Means,
At least one of the first encryption processing means and the second encryption processing means encrypts the first order value,
At least one of the first decryption processing unit and the second decryption processing unit decrypts the encrypted first order value.   2. The gaming machine according to claim 1, wherein the second encryption processing unit and the second key storage unit are formed of a one-chip circuit that integrally includes them in the main board.   3. The gaming machine according to claim 1, wherein the first decryption processing unit and the third key storage unit are formed by a one-chip circuit integrally including them in the sub-board. The first sequence value generating means initially generates a random value when power is turned on to be an initial value of the first sequence value,
At least one of the first encryption processing means and the second encryption processing means encrypts the initial value,
The command transmission means transmits the encrypted initial value to the sub-board,
The command receiving means receives the encrypted initial value from the main board,
At least one of the first decryption processing means and the second decryption processing means decrypts the encrypted initial value,
4. The gaming machine according to claim 1, wherein the second order value generation means initially uses the decoded initial value as an initial value of the second order value. 5. The first sequence value generation means stores in advance a unique value uniquely assigned to each gaming machine as an initial value of the first sequence value,
The said 2nd order value production | generation means stores beforehand the same value as the initial value which the said 1st order value production | generation means memorize | stores beforehand as an initial value of the said 2nd order value. The gaming machine described in Crab.

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