US Patent No: 5,263,716
Number of patents in Portfolio can not be more than 2000
Multiple tier gaming machine
Stats
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Nov 23, 1993
Issued date -
Jan 23, 1992
filing date -
07/824,118
serial no -
Expired
status
Importance
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Abstract
A gaming machine is provided in which the symbols/indicia to be displayed are selected by using a random selection process to generate a random number element for each display position. The process is a two-step selection process. In a first selection process random numbers are chosen from a first table of random numbers, elements of which are mapped directly to reel stopping positions and at least one element of which if generated, causes a second selection step. The second selection step is between a further stopping position, not available in the first selection step, and an alternative stopping position which is preferably also available in the first selection step. The stopping position not available in the first selection step may be associated with a jackpot symbol. The frequency of occurrence of a jackpot symbol can be reduced by this method, and an appropriately high jackpot can therefore be offered.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 4,492,379 Reel type slot machine | 41 | 1982 | |
| 4,573,681 Slot machine with random number generation | 137 | 1984 | |
| 4,657,256 Slot machine with win/loss biasing means | 78 | 1986 | |
| 4,772,023 Slot machine | 89 | 1987 | |
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| 5,102,134 Multiple tier random number generator | 133 | 1990 | |
| 5,108,099 Slot machine with multiple symbol selection | 34 | 1990 | |
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| 4,711,451 Reel mapping scheme for a gaming device | 74 | 1986 | |
| 4,858,932 Nonuniform probability reel stop mechanism for gaming machines | 64 | 1988 | |
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| 4,448,419 Electronic gaming device utilizing a random number generator for selecting the reel stop positions | 590 | 1982 | |
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| 4,679,143 Control device for game machine | 156 | 1983 | |
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| 4,527,798 Random number generating techniques and gaming equipment employing such techniques | 124 | 1981 | |