EP0354651B1 - Appareil de jeu à sous - Google Patents

Appareil de jeu à sous Download PDF

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Publication number
EP0354651B1
EP0354651B1 EP89306274A EP89306274A EP0354651B1 EP 0354651 B1 EP0354651 B1 EP 0354651B1 EP 89306274 A EP89306274 A EP 89306274A EP 89306274 A EP89306274 A EP 89306274A EP 0354651 B1 EP0354651 B1 EP 0354651B1
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EP
European Patent Office
Prior art keywords
symbol
reel
total
train
symbols
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP89306274A
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German (de)
English (en)
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EP0354651A3 (en
EP0354651A2 (fr
Inventor
Yuji Nagao
Yoshihiro Kinoshita
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Sigma Inc
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Sigma Inc
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Application filed by Sigma Inc filed Critical Sigma Inc
Priority to AT89306274T priority Critical patent/ATE95623T1/de
Publication of EP0354651A2 publication Critical patent/EP0354651A2/fr
Publication of EP0354651A3 publication Critical patent/EP0354651A3/en
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    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F17/00—Coin-freed apparatus for hiring articles; Coin-freed facilities or services
    • G07F17/32—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for games, toys, sports, or amusements
    • G07F17/3244—Payment aspects of a gaming system, e.g. payment schemes, setting payout ratio, bonus or consolation prizes

Definitions

  • the present invention relates to a slot machine which has X reels each provided with a plurality of symbols forming a so-called symbol train thereon or X symbol trains stored in a memory.
  • a player In playing such a slot machine provided with X mechanically driven reels, a player inserts a coin or token into a coin port provided in the slot machine body and manipulates a start lever or the like to cause the reels which have a plurality of symbols drawn on outer peripheries thereof to rotate. (Cf. e.g. US-A-4 037 845.)
  • Fig. 1 lists the symbols forming symbol trains provided on the reels of a prior art slot machine. It can be seen that the symbol train of each reel comprises the same number of symbols. Each symbol indicates a stop position of its reel and each symbol train consists of sixteen symbols which correspond to a stop position. Each symbol train includes four different symbols (7B, 5B, 1B, BL). combinations are (1) 7B-7B-7B, (2) 5B-5B-5B, and (3) 1B-1B-1B. The symbols which may form a winning combination of symbols are 7B, 5B and 1B and the winning combinations are (1) 7B-7B-7B, (2) 5B-5B-5B, and (3) 1B-1B-1B.
  • the symbol train on the first reel includes the symbol 7B at a proportion of 2/16, the symbol 5B at a proportion of 2/16 and the symbol 1B at a proportion of 4/16.
  • the symbol train on the second reel includes the symbol 7B at a proportion of 2/16, the symbol 5B at a proportion of 2/16, and the symbol 1B at a proportion of 3/16.
  • the symbol train on the third reel includes the symbol 7B at a proportion of 1/16, the symbol 5B at the proportion of 2/16 and the symbol 1B at the proportion of 3/16.
  • a probability of occurrence of 7B-7B-7B is 4/4096
  • a probability of occurrence of 5B-5B-5B is 8/4096
  • a probability of occurrence of 1B-1B-1B is 36/4096.
  • the outcome of a game that is whether a player wins or loses, and where applicable the value of the win, is indicated by a combination of symbols appearing on a so-called winning line when the reels are stopped.
  • the probability of winning in such a slot machine depends on the type and number of symbols arranged on the outer peripheries of the reels and the number of reels.
  • one random number is selected from a random number table in a given range, and the is determined on the basis of that random number.
  • the selected random number is compared with a probability table to determine the outcome of a game and the symbols are selected by referencing symbol tables (one symbol table is provided for each reel) so that the game outcome may be displayed.
  • the selected random number is related to the symbols of the reels which are uniquely determined by the random number selected.
  • JP-A-62-213782 disclosed a slot machine in which each of X symbol tables to be referenced when symbols are selected from symbol trains to determine the outcome of a game has Y Symbols equal to X-order root of 2 n .
  • a specific random number is sampled from 2 n random numbers at the probability of 1/2 n and the symbols of X symbol trains are determined based on the sampled random number.
  • a probability in determining the symbols by referencing the symbol table is equal to the probability in sampling the random number (1/2 n ). Accordingly, the combination of symbols finally provided on the winning line is not biased and non-artificial natural game playing can be attained.
  • n is an integer and a room for selection of the number Y of symbols arranged on the outer peripheries of the reels is narrow.
  • perfect integers cannot be generated.
  • the above disadvantage is common to a mechanically driven slot machine in which the reels are mechanically rotated to move the symbol trains and a video type slot machine in which symbol trains are displayed on a CRT screen.
  • the invention provides a slot machine comprising X reels each reel comprising a plurality of symbols which form a symbol train having a total symbol number, wherein an outcome of a game played on said machine is determined in accordance with a random number, characterised in that said X reels include at least one reel having a total symbol number different to the total symbol numbers of the other reels and the product obtained when the respective total symbol numbers of the symbol trains are multiplied together is equal to the total number of random numbers from which said random number is selected.
  • the slot machine may be one of the type which does not have mechanically driven reels; that is, a video type slot machine in which symbol trains are stored in a memory such as a ROM.
  • the invention also provides a slot machine comprising X symbol trains stored in a memory each of said symbol trains comprising a plurality of symbols and having a total symbol number, wherein an outcome of a game played on said machine is determined in accordance with a random number, characterised in that at least one of said X symbol trains stored in the memory has a total symbol number different to the total symbol numbers of the other symbol trains, and the product obtained when the respective total symbol numbers of the symbol trains are multiplied together is equal to the total number of random numbers from which said random number is selected.
  • the invention also provides a slot machine comprising X reels, each reel comprising a plurality of symbols arranged on an outer periphery thereof to form a symbol train having a total symbol number, wherein an outcome of a game played on said machine is determined in accordance with a random number, said X reels comprising a first reel, a second reel and a plurality of other reels, characterised by said first reel having a larger number of a particular symbol which may form a winning combination of symbols than the other reels and said second reel having a smaller number of said particular symbol than the other reels, the probability of occurrence of a winning combination of said particular symbol from the symbol train of the first reel and the symbol train of the second reel being equal to the probability of occurrence of a winning combination of the same symbol from the symbol trains of the other reels on playing a game on said machine and the product obtained when the respective total symbol numbers of the symbol trains are multiplied together being equal to the total number of random numbers from which said random number is selected.
  • the invention also provides a slot machine comprising X symbol trains stored in a memory, each of said symbol trains comprising a plurality of symbols and having a total symbol number, wherein an outcome of a game played on said machine is determined in accordance with a random number, said X symbol trains comprising a first symbol train, a second symbol train and a plurality of other symbol trains, characterised by said first symbol train having a larger number of a particular symbol which may form a winning combination of symbols than the other symbol trains and said second symbol train having a smaller number of said particular symbol than the other symbol trains, the probability of occurrence of a winning combination of said particular symbol from the first symbol train and the second symbol train being equal to the probability of occurrence of a winning combination of the same symbol from the other symbol trains and the product obtained when the respective total symbol numbers of the symbol trains are multiplied together is equal to the total number of random numbers from which said random number is selected.
  • FIG. 2 A first embodiment of a slot machine in accordance with the present invention is explained with reference to Figs. 2 to 5.
  • Fig. 3 shows an external view of a three-reel type slot machine.
  • a player inserts one to three coins into a coin port 1.
  • Which of three winning lines X, Y and Z is valid in the game is determined in accordance with the number of coins inserted.
  • each line X, Y, Z is valid and a probability of winning is higher.
  • line X is the only valid winning line.
  • the number of coins inserted is digitally displayed by a coin count display 3.
  • the coin count may be indicated by turning on an LED lamp which is related to number 1, 2 or 3.
  • the player depresses a start switch on a game switch unit 4 or pulls a start lever 2 so that respective stepping motors for rotating the first reel 5, second reel 6 and third reel 7 each having symbols arranged on the outer peripheries thereof to form symbol trains having a total symbol number are substantially simultaneously driven.
  • the player may observe the movement of the symbol trains through windows 8, 9 and 10 provided for the respective reels; though the player cannot identify the individual symbols.
  • the reels are driven through a microcomputer 32 and a motor driver 21.
  • a stop position of each reel is determined under random number control by a random number generator 13.
  • the stop position of the first reel 5 is determined when a coin (or coins) is inserted in the coinslot and the stop positions of the second reel 6 and the third reel 7 are determined when the player depresses the start switch on the game switch unit 4 or pulls the start lever 2.
  • the number of coins inserted and the number of coins paid out are displayed on the display 3 and the game is over. If there is no winning combination displayed at any winning line, the player loses and the game is over.
  • Fig. 4 shows a functional block diagram of a circuit configuration of the three-reel type slot machine of Fig. 3.
  • the coins inserted in the coin port 1 are detected by a coin detector 12 one by one, and the count of detection pulses generated when the coins are detected is supplied to an MPU 16 as a coin count through an input port 14.
  • the coin count supplied to the MPU 16 is stored in a RAM 19 by the MPU 16.
  • the MPU 16 converts the coin count to data for a display unit 28 and sends it to the display unit 28 so that the display 3 displays the coin count supplied to the MPU 16.
  • the coin count stored in the RAM 19 provides information relating to the winning lines validated in the game for the MPU 16.
  • the MPU 16 When the player a coin or coins and manipulates the start switch on the game switch unit 4 or the start lever 2, the MPU 16 reads that information through the input port 14 and activates the motor driver 21 to rotate the stepping motors 22, 23 and 24. The MPU 16 now supplies a drive pulse to the motor driver 16 by reference to a pulse generated by a pulse generator 18.
  • the first reel 5, second reel 6 and third reel 7 are coupled to drive shafts of their respective stepping motors 22, 23 and 24 so that they rotate with same.
  • a plurality of disproportion-type symbols having a different length in peripheral direction of the reel are arranged on the outer peripheries of each reel. Each symbol corresponds to one stop position.
  • the symbol L having a relatively greater peripheral length bears a character such as "7B" or "5B", etc. and the symbol S having a relatively smaller peripheral length bears a blank (hereinafter referred as "BL"). Accordingly, as illustrated in Fig. 5, the symbol trains of the reels do not comprise a continuous arrangement of
  • the numbers of pulses supplied to the stepping motor 22, 23 and 24 are stored in the RAM 19 from the MPU 16. Since the angle of rotation of the stepping motors 22, 23 and 24 changes with the number of pulses supplied thereto, the MPU 16 can uniquely determine the angular disposition of the respective shafts of the stepping motors 22, 23 and 24.
  • Projections 5a, 6a and 7a for producing reset signals are provided respectively on a portion of the circumference of the first reel 5, second reel 6 and third reel 7.
  • the projections 5a, 6a and 7a are detected by respective photo-sensors 25, 26 and 27 in each revolution of the respective reels.
  • the detection signals obtained are used to determine reference positions of the reels.
  • the MPU 16 can determine the number of pulses to be supplied to the respective stepping motors in order to drive the reels to their required stop positions.
  • the symbol position on the winning line when the first reel 5, second reel 6 and third reel 7 stop correspond to the numbers of pulses supplied to the stepping motors from the MPU 16.
  • the winning lines validated by the number of coins inserted are taken into consideration. If a winning symbol combination appears on a valid winning line, the player wins the game and coins are paid out from the exit 11, or if the bet switch of the game switch 4 has been depressed, the number of coins to be paid out is displayed on the display 3 as credit.
  • the MPU 16 supplies a hopper drive signal to a driver 29 through an output port 17 so that the hopper is driven and the coins are paid out. Each time a coin is paid out, a microswitch in the hopper is actuated to generate a pulse.
  • the pulse is sent to the MPU 16 through a driver 29 and an input port 14. Since the number of pulses sent to the MPU 16 corresponds to the number of coins paid out, the MPU 16 can determine the exact number of coins paid out.
  • the MPU 16 sends a hopper stop signal to the driver 29 through the output port 17 so that the hopper is stopped.
  • the number of coins paid out is displayed on the display 3.
  • the number of coins inserted for the game is not erased until coins are newly inserted for the next game.
  • the symbol trains arranged on the outer peripheries of the first reel 5, second reel 6 and third reel 7 of the slot machine will now be explained with reference to Fig. 2.
  • sixteen symbols are arranged on the outer periphery of each of the first reel 5 and second reel 6 and thirty-two symbols are arranged on the outer periphery of the third reel 7.
  • the total symbol number for the first and second reels is sixteen and the total symbol number for the third reel is thirty-two.
  • one stop position is prepared for each symbol and the number of stop positions is equal to the number of symbols.
  • Each symbol train comprises four different symbols (7B, 5B, 1B, BL) of which symbols 7B, 5B and 1B are the symbols which may form a winning combination of symbols.
  • the winning combinations are (1) 7B-7B-7B, (2) 5B-5B-5B, and (3) 1B-1B-1B.
  • the symbol train on the first reel 5 includes the symbols 7B at a proportion of 4/16, the symbols 5B at a proportion of 4/16 and the symbols 1B at a proportion of 8/16.
  • the symbol train on the second reel 6 includes the symbols 7B at a proportion of 2/16, the symbols 5B at a proportion of 2/16 and the symbols 1B at a proportion of 3/16.
  • the slot machine comprises that a reel 7 having a total symbol number different to the total symbol number of the other reels 5, 6.
  • the third reel 7 has thirty-two symbols whereas the first reel 5 and the second reel 6 each have only sixteen symbols.
  • the proportion of the number of a particular symbol which may form a winning combination of symbols at a winning line which is provided on each reel is arbitrarily determined. This proportion may be the same for some or all of the reels, even though the total number of symbols is different.
  • the X reels may comprise a first reel of which the total symbol number is I and the number of a particular winning symbol is A and a second reel of which the total symbol number is J and the number of the same symbol is B, and A/I is equal to B/J.
  • the X reels may comprise a first reel of which the total symbol number is I, a second reel of which the total symbol number is J and a third reel of which the total symbol number is K where the number of a particular symbol which may form a winning combination of symbols provided on said first reel, said second reel and said third reel is respectively A, B and C, and A/I and B/J are equal to C/K.
  • (A/I)x(B/J) can be made equal to (C/K)2 to provide the same probability of occurrence of a winning combination of the particular winning symbol as a slot machine with three reels which each have a total symbol number K and a number C of the particular symbol.
  • A/I is 4/16 for the 1st reel
  • B/J is 2/32 for the 3rd reel
  • C/K is 2/16 for the 2nd reel.
  • the other two reels may comprise a reel of which the total symbol number is H and the number of the particular winning symbol is D and a reel of which the total symbol number is M and the number of the particular winning symbol number is E where (D/H) ⁇ (E/M) can be made equal to (C/K)2.
  • the above-described reel configuration may also be applied to a slot machine which determines the outcome of a game in accordance with a random number wherein the symbols are selected by referencing symbol tables (one provided for each reel) so that the game outcome may be displayed.
  • the total symbol number of the symbol trains and their corresponding symbol tables may be different for each reel.
  • FIG. 7 A construction of a video-type slot machine of the present embodiment is first explained with reference to Fig. 7. Since an external view of such a slot machine is essentially the same as that of the first embodiment, an explanation thereof is omitted.
  • Fig. 7 shows a functional block diagram of a circuit configuration for a video-type machine corresponding to the mechanical three-reel type slot machine.
  • a CRT 37 is provided at the position corresponding to the position of the reels in Fig. 3.
  • the CRT 37 is driven by a micro computer 38 and a CRT driver 39, and nine symbols in total are displayed in matrix form on the display screen.
  • the number of coins inserted in the coin port is counted by a counter 40 with the data supplied via an input port 55.
  • the number of valid winning lines on the display screen is determined by the number of coins inserted.
  • the valid winning lines are referenced in determining the outcome of a game.
  • a start button When a start button is depressed, a clock pulse is supplied from a pulse generator 41 to the CPU 43 and a microcomputer 38 is activated.
  • the microcomputer 38 processes the game in accordance with a game program stored in a ROM 44.
  • a CRT controller 45 As the microcomputer 38 is activated, a CRT controller 45 is activated and character data of the symbols to be displayed on the CRT 37 from a character ROM 46 is accessed in an address sequence so that the symbols are displayed with scrolling effect.
  • the ROM 44 stores, in addition to the game program, the contents of three symbol tables corresponding to the mechanical reels and a winning table.
  • the displayed symbol address data is held while it is sequentially updated in a RAM 47.
  • the scrolling of the first symbol train 49 vertically displayed on the CRT 37 is stopped by a stop signal generated by a random number generator 48 so that three symbols are specified (7B-7B-1B as illustrated).
  • the scrolling of the second symbol train 52 and the third symbol train 53 is stopped in response to respective stop signals sequentially produced by delay signals 50 and 51 so that stop positions of the symbol trains are selected in accordance with the random number. In this manner, nine symbols in total are selected thereby determining the outcome of the game.
  • the RAM 47 stores the address data of the symbols displayed on the CRT 37.
  • the address data stored in the winning table memory of the ROM 44 and the data stored in the RAM 47 are compared in performing the check.
  • the CPU 43 has input port 55 and output port 56 connected thereto.
  • the output port 56 supplies drive signal to a hopper 58 in response to a signal from the CPU 43.
  • the hopper 58 pays out a predetermined number of coins corresponding to the type of winning in response to the signal from the output port 56.
  • a normal symbol display mode is restored and the slot machine is reset to the initial state.
  • the three symbol table memories in the ROM 44 store eight symbols for the first symbol train 49, sixteen symbols for the second symbol train 52 and thirty-two symbols for the third symbol train 53.
  • the total symbol number of each symbol train is different to that of the other symbol trains.
  • one stop position is prepared for each symbol and the number of symbols is equal to that of stop positions.
  • Each symbol train includes four different symbols (7B, 5B, 1B, BL), and the winning combinations are (1)7B-7B-7B, (2) 5B-5B-5B, and (3) 1B-1B-1B.
  • the first symbol train 49 includes the symbols 7B at a proportion of 2/8, the symbols 5B at a proportion of 2/8, and the symbols 1B at a proportion of 4/8.
  • the second symbol train 52 includes the symbols 7B at a proportion of 2/16, symbols 5B at a proportion of 2/16 and the symbols 1B at a proportion of 3/16.
  • the third symbol train 53 includes the symbols 7B at a proportion of 1/32, symbols 5B at a proportion of 2/32 and the symbols 1B at a proportion of 3/32.
  • a probability of occurrence of 7B-7B-7B is 4/4096
  • a probability of occurrence of 5B-5B-5B is 8/4096
  • a probability of occurrence of 1B-1B-1B is 36/4096, which probabilities are equal to the probabilities in the symbol trains on the reels of the prior art slot machine (see Fig. 1).
  • the number of symbols in one of the three symbol trains is increased and the number of symbols in another symbol train is decreased relative to the sixteen symbol reels described in connection with the prior art slot machines, so that the final probability for the winning symbol combinations (for example, 7B-7B-7B) is not changed.
  • the total symbol number of the second symbol train 52 is equal to sixteen (the same number as the reels of the prior art machine)
  • the total symbol number of the first symbol train 49 is decreased from sixteen to eight
  • the total symbol number of the third symbol train 53 is increased from sixteen to thirty-two so that the final probability does not change from that where the three sixteen symbol, symbol trains are used.
  • Figs. 8a and 8b show the probability of occurrence of some symbol combinations.
  • Fig. 8A shows winning combinations
  • Fig. 8B shows combinations of one-symbol losing and probabilities thereof.
  • the number of a particular symbol can be controlled such that the probability of forming a winning combination of that symbol is not changed by changing the number of symbols of that particular type provided on the reels.
  • the probabilities of combinations of one-symbol losing are high as seen from Fig. 8B.
  • the number of reels, the total symbol number of the reels and the number of symbol trains whose total symbol numbers and/or numbers of particular symbols are increased or decreased is not limited to those described in conjunction with the above embodiments.
  • the symbol trains of the first embodiment (Fig. 2) and the symbol trains described in the examples given may be applied to the slot machine of the second embodiment and the symbol trains of the second embodiment (Fig. 6) may be applied to the slot machine of the first embodiment.
  • the number of symbol trains whose numbers of symbols are increased or decreased is not limited to two.
  • the number of a particular symbol which may form a winning combination on the first reel may be larger than the number of the same symbol on the fifth reel (or sixth or seventh reel) (hereinafter referred to as "reference number of symbols") and the number of the same symbol on the second reel may be smaller than the reference number
  • the number of the symbol on the third reel may be larger than the reference number
  • the number of the symbol on the fourth reel may be smaller than the reference number.
  • the probability of occurrence of a winning combination (for example, 7B-7B) on the first and second reels is equal to the probability of occurrence of the same winning combination on the third and fourth reels and a probability of occurrence of a winning combination of the same symbol on the fifth and sixth reels (having the equal number of symbols).
  • the numbers of the particular symbol on the first and second reels may be increased and the number of the same symbol on the third reel may be reduced.
  • probability of the occurrence of a winning combination of the symbol (for example, 7B-7B-7B) on the first, second and third reels is equal to the probability of occurrence of the same winning combination on the fifth, sixth and seventh reels (each having an equal number of symbols).
  • the total symbol number of the symbol trains is not limited to eight, sixteen or thirty-two.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Slot Machines And Peripheral Devices (AREA)
  • Pinball Game Machines (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Eye Examination Apparatus (AREA)

Claims (16)

  1. Machine à sous comprenant X roues (5, 6, 7), chacune des roues comprenant une pluralité de symboles qui constituent une chaîne de symboles ayant un nombre total de symboles, dans laquelle le résultat d'une partie réalisée sur ladite machine est déterminé en fonction d'un nombre aléatoire, caractérisée en ce que lesdites X roues comprennent au moins une roue (7) pourvue d'un nombre total de symboles différent des nombres totaux de symboles des autres roues (5, 6), et en ce que le produit obtenu, lorsque les nombres totaux de symboles des chaînes de symboles (5, 6, 7) respectifs sont multipliés ensemble, est égal au nombre total de nombres aléatoires parmi lesquels le nombre aléatoire est sélectionné.
  2. Machine à sous selon la revendication 1, caractérisée en ce que ledit nombre total de nombres aléatoires est de 2n, dérivé d'un nombre binaire de n bits.
  3. Machine à sous selon la revendication 1 ou 2, caractérisée en ce que :
       lesdites X roues comprennent une première roue dont le nombre total de symboles est I et une seconde roue dont le nombre total de symboles est J, où le nombre de symboles particuliers disposés sur lesdites première et seconde roues pouvant constituer une combinaison gagnante de symboles est respectivement A et B, et en ce que A/I est égal à B/J.
  4. Machine à sous selon la revendication 1 ou 2, caractérisée en ce que :
       lesdites X roues comprennent une première roue dont le nombre total de symboles est I, une seconde roue dont le nombre total de symboles est J, et une troisième roue dont le nombre total de symboles est K, où le nombre de symboles particuliers pouvant constituer une combinaison gagnante de symboles disposés sur ladite première roue, ladite seconde roue et ladite troisième roue est respectivement A, B et C, et en ce que A/I et B/J sont égaux à C/K.
  5. Machine à sous selon la revendication 1 ou 2, caractérisée en ce que :
       lesdites X roues comprennent une première roue dont le nombre total de symboles est I, une seconde roue dont le nombre total de symboles est J, et une troisième roue dont le nombre total de symboles est K, où le nombre de symboles particuliers pouvant constituer une combinaison gagnante de symboles disposés sur ladite première roue, ladite seconde roue et ladite troisième roue est respectivement A, B et C, et en ce que (A/I)x(B/J) est égal à (C/K)².
  6. Machine à sous selon la revendication 1 ou 2, caractérisée en ce que :
       lesdites X roues comprennent une première roue dont le nombre total de symboles est I, une seconde roue dont le nombre total de symboles est J, une troisième roue dont le nombre total de symboles est K, et une quatrième roue dont le nombre total de symboles est H, où le nombre de symboles particuliers pouvant constituer une combinaison gagnante de symboles disposés sur ladite première roue, ladite seconde roue, ladite troisième roue, et ladite quatrième roue est respectivement A, B, C et D, et en ce que (A/I)x(B/J) est égal à (C/K)x(D/H).
  7. Machine à sous comprenant X chaînes de symboles (49, 52, 53) mémorisées dans une mémoire (44), chacune desdites chaînes de symboles comprenant une pluralité de symboles et contenant un nombre total de symboles, dans laquelle un résultat d'une partie réalisée sur ladite machine est déterminé en fonction d'un nombre aléatoire, caractérisée en ce qu'au moins l'une (49, 52, 53) desdites X chaînes de symboles mémorisées dans la mémoire possède un nombre total de symboles différent des nombres totaux de symboles des autres chaînes de symboles, et en ce que le produit obtenu, lorsque les nombres totaux de symboles des chaînes de symboles (49, 52, 53) sont multipliés ensemble, est égal au nombre total de nombres aléatoires parmi lesquels le nombre aléatoire est sélectionné.
  8. Machine à sous selon la revendication 7, caractérisée en ce que ledit nombre total de nombres aléatoires est de 2n, dérivé d'un nombre binaire de n bits.
  9. Machine à sous selon la revendication 7 ou 8, caractérisée en ce que lesdites X chaînes de symboles comprennent une première chaîne de symboles dont le nombre total de symboles est I et une deuxième chaîne de symboles dont le nombre total de symboles est J, où le nombre de symboles particuliers pouvant constituer une combinaison gagnante de symboles pour ladite première chaîne de symboles et ladite seconde chaîne de symboles est respectivement A et B, et en ce que A/I est égal à B/J.
  10. Machine à sous selon la revendication 7 ou 8, caractérisée en ce que lesdites X chaînes de symboles comprennent une première chaîne de symboles dont le nombre total de symboles est I, une seconde chaîne de symboles dont le nombre total de symboles est J et une troisième chaîne de symboles dont le nombre total de symboles est K, où le nombre de symboles particuliers pouvant constituer une combinaison gagnante de symboles pour ladite première chaîne de symboles, ladite seconde chaîne de symboles et ladite troisième chaîne de symboles, est respectivement A, B et C, et en ce que A/I et B/J sont égaux à C/K.
  11. Machine à sous selon la revendication 7 ou 8, caractérisée en que ce lesdites X chaînes de symboles comprennent une première chaîne de symboles dont le nombre total de symboles est I, une seconde chaîne de symboles dont le nombre total de symboles est J et une troisième chaîne de symboles dont le nombre total de symboles est K, où le nombre de symboles particuliers pouvant constituer une combinaison gagnante de symboles pour ladite première chaîne de symboles, ladite seconde chaîne de symboles et ladite troisième chaîne de symboles, est respectivement A, B et C, et en ce que (A/I)x(B/J) est égal à (C/K)².
  12. Machine à sous selon la revendication 7 ou 8, caractérisée en ce que lesdites X chaînes de symboles comprennent une première chaîne de symboles dont le nombre total de symboles est I, une seconde chaîne de symboles dont le nombre total de symboles est J, une troisième chaîne de symboles dont le nombre total de symboles est K, et une quatrième chaîne de symboles dont le nombre total de symboles est H, où le nombre de symboles particuliers pouvant constituer une combinaison gagnante de symboles pour ladite première chaîne de symboles, ladite seconde chaîne de symboles, ladite troisième chaîne de symboles et ladite quatrième chaîne de symboles, est respectivement A, B, C et D, et en ce que (A/I)x(B/J) est égal à (C/K)x(D/H).
  13. Machine à sous comprenant X roues, chaque roue comprenant une pluralité de symboles disposés sur une périphérie externe de celle-ci pour constituer une chaîne de symboles ayant un nombre total de symboles, dans laquelle un résultat d'une partie réalisée sur ladite machine est déterminé en fonction d'un nombre aléatoire, lesdites X roues comprenant une première roue, une deuxième roue et une pluralité d'autres roues, caractérisée en ce que ladite première roue est pourvue d'un nombre de symboles particuliers pouvant constituer une combinaison gagnante de symboles plus important que celui des autres roues et ladite deuxième roue ayant un nombre desdits symboles particuliers inférieur à celui des autres roues, la probabilité d'occurrence d'une combinaison gagnante desdits symboles particuliers de la chaîne de symboles de la première roue et de la chaîne de symboles de la deuxième roue étant égale à la probabilité d'occurrence d'une combinaison gagnante des mêmes symboles issus des chaînes de symboles des autres roues, en réalisant une partie sur ladite machine, et en ce que le produit obtenu, lorsque les nombres totaux de symboles des chaînes de symboles respectifs sont multipliés ensemble, est égal au nombre total de nombres aléatoires parmi lesquels ledit nombre aléatoire est sélectionné.
  14. Machine à sous selon la revendication 13, caractérisée en ce que le nombre total de symboles de ladite première roue est égal à celui de ladite seconde roue.
  15. Machine à sous comprenant X chaînes de symboles mémorisées dans une mémoire, chacune desdites chaînes de symboles comprenant une pluralité de symboles et ayant un nombre total de symboles, dans laquelle un résultat d'une partie réalisée sur ladite machine est déterminé en fonction d'un nombre aléatoire, lesdites X chaînes de symboles comprenant une première chaîne de symboles, une deuxième chaîne de symboles, et une pluralité d'autres chaînes de symboles, caractérisée en ce que ladite première chaîne de symboles ayant un nombre de symboles particuliers pouvant constituer une combinaison gagnante de symboles plus important que celui des autres chaînes de symboles, et ladite deuxième chaîne de symboles ayant un nombre desdits symboles particuliers inférieur à celui des autres chaînes de symboles, la probabilité d'occurrence d'une combinaison gagnante desdits symboles particuliers de la première chaîne de symboles et de la deuxième chaîne de symboles étant égale à la probabilité d'occurrence d'une combinaison gagnante des mêmes symboles des autres chaînes de symboles et en ce que le produit obtenu, lorsque les nombres totaux de symboles des chaînes de symboles respectifs sont multipliés ensemble, est égal au nombre total de nombres aléatoires à partir desquels ledit nombre aléatoire est sélectionné.
  16. Machine à sous selon la revendication 15, caractérisée en ce que le nombre total de symboles de ladite première chaîne de symboles est égal à celui de ladite seconde chaîne de symboles.
EP89306274A 1988-08-12 1989-06-22 Appareil de jeu à sous Expired - Lifetime EP0354651B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89306274T ATE95623T1 (de) 1988-08-12 1989-06-22 Muenzbetaetigtes spielgeraet.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP63201702A JP2815587B2 (ja) 1988-08-12 1988-08-12 スロットマシン
JP201702/88 1988-08-12

Publications (3)

Publication Number Publication Date
EP0354651A2 EP0354651A2 (fr) 1990-02-14
EP0354651A3 EP0354651A3 (en) 1990-03-28
EP0354651B1 true EP0354651B1 (fr) 1993-10-06

Family

ID=16445503

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89306274A Expired - Lifetime EP0354651B1 (fr) 1988-08-12 1989-06-22 Appareil de jeu à sous

Country Status (8)

Country Link
EP (1) EP0354651B1 (fr)
JP (1) JP2815587B2 (fr)
AT (1) ATE95623T1 (fr)
AU (1) AU610408B2 (fr)
DE (1) DE68909715T2 (fr)
ES (1) ES2047115T3 (fr)
MY (1) MY105199A (fr)
NZ (1) NZ229554A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2248712A (en) * 1990-09-01 1992-04-15 P C P Micro Products Ltd Multi-size reel symbols for fruit machines
JPH11169505A (ja) 1997-12-10 1999-06-29 Aruze Corp 遊技用表示装置及び遊技機
GB0213181D0 (en) * 2002-06-08 2002-07-17 Bell Fruit Games Ltd An entertainment machine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4037845A (en) * 1975-03-14 1977-07-26 Bally Manufacturing Corporation Amusement apparatus
JPS5997686A (ja) * 1982-11-29 1984-06-05 シグマ商事株式会社 遊戯機の制御装置
GB2193025B (en) * 1986-07-25 1990-01-04 Ainsworth Nominees Pty Ltd Multi-size reel symbols
NL8802281A (nl) * 1987-09-25 1989-04-17 Ainsworth Nominees Pty Ltd Pokermachine.

Also Published As

Publication number Publication date
DE68909715T2 (de) 1994-02-03
EP0354651A3 (en) 1990-03-28
AU3643789A (en) 1990-05-03
EP0354651A2 (fr) 1990-02-14
DE68909715D1 (de) 1993-11-11
AU610408B2 (en) 1991-05-16
JP2815587B2 (ja) 1998-10-27
JPH0249681A (ja) 1990-02-20
MY105199A (en) 1994-08-30
ATE95623T1 (de) 1993-10-15
ES2047115T3 (es) 1994-02-16
NZ229554A (en) 1992-04-28

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