Method and apparatus for directly generating a random final outcome of a game

• US 5,511,784 A
• Filed: 05/09/1994
• Issued: 04/30/1996
• Est. Priority Date: 05/09/1994
• Status: Expired due to Term

• Current Assignee: IGT (International Game Technology)
• Original Assignee: Video Lottery Technologies, Inc. (International Game Technology)
• Inventors: Furry, Kevin, Tode, Jess
• Primary Examiner(s): HARRISON, JESSICA
• Application Number:
  US08/239,755
• Time in Patent Office: 722 Days
• Field of Search: 273/138 A, 273/143 R, 364/410, 364/412
• US Class Current: 273/143.00R
• CPC Class Codes: G07F 17/3244 Payment aspects of a gaming system, e.g. payment schemes, setting payout ratio, bonus or consolation prizes

Abstract

An apparatus for directly determining an outcome of a game which identifies this outcome by displaying a series of indicia that correspond to the outcome. The apparatus includes a random number generator which generates a random number from a predetermined set thereof. The random number is scaled to obtain an outcome identifier from a set of outcome identifiers. The set of outcome identifiers are divided into a plurality of subsets, with each subset corresponding to one win/loss tier. The outcome identifier is evaluated to determine which of the outcomes it corresponds to by identifying the subset, into which it falls. Once the outcome is identified, a corresponding win/loss tier is identified. Each win/loss tier is associated with a unique reel combination table, each of which includes at least one series of indicia to be displayed as a reel combination corresponding to the chosen outcome. Once the win/loss tier is identified, the random number is again scaled to obtain an index into the corresponding reel combination table. The table is accessed and the indexed series of indicia are displayed.

Claims

1. An apparatus for determining an outcome of a game, said gaming apparatus comprising:

memory means for storing a plurality of possible outcomes divided into multiple subsets, each subset including a win/loss tier and at least one series of indicia;

generating means for generating a random number;

scaling means for scaling said ransom number by a factor other than one to obtain an outcome identifier from a plurality of outcome identifiers, said outcome identifier designating a resulting outcome;

assigning means for assigning a plurality of outcome identifiers to corresponding win/loss tiers representing amounts to be paid out;

determining means for determining a resulting win/loss tier and payout and for determining a resulting series of indicia to be displayed based directly upon said outcome identifier; and

displaying means for displaying the resulting series of indicia corresponding to said resulting win/loss tier.

2. An apparatus for determining an outcome of a game, according to claim 1, wherein said memory means stores multiple tables, each of said tables including at least one unique series of indicia to be displayed, each table corresponding to one of said win/loss tiers.

3. An apparatus for determining an outcome of a game, according to claim 2, wherein said multiple tables include at least one table consisting of a single series of indicia representing an only reel combination to be displayed for a corresponding resulting outcome and at least one table including more than one series of indicia representing more than one reel combination to be displayed for a corresponding resulting outcome.

4. An apparatus for determining an outcome of a game, according to claim 1, wherein said memory means stores multiple reel combination tables and a one-to-one relationship between each of said subsets and a corresponding reel combination table, each reel combination table storing at least one unique series of indicia to be displayed.

5. An apparatus for determining an outcome of a game, according to claim 1, wherein said memory means stores upper and lower limits for each subset and wherein said determining means compares said outcome identifier to said upper and lower limits to determine said resulting win/loss tier.

6. An apparatus for determining an outcome of a game, according to claim 1, wherein said scaling means includes first scaling means for scaling said random number by a total number of possible outcomes to obtain said outcome identifier.

7. An apparatus for determining an outcome of a game, according to claim 1, wherein said scaling means includes second scaling means for scaling said random number by a total number of series of indicia corresponding to said resulting win/loss tier to identify a single series of indicia to be displayed.

8. An apparatus for determining an outcome of a game, according to claim 1, wherein said determining means produces a reel combination index based on said outcome identifier and uses said reel combination index to obtain a series of indicia to be displayed.

9. An apparatus for determining an outcome of a game, according to claim 8, wherein reel combination index represents a scaled value of said outcome identifier.

10. An apparatus for determining an outcome of a game, according to claim 1, further comprising means for determining and distributing a payout award based on said resulting win/loss tier during every game.

11. An apparatus for determining an outcome of a game, according to claim 1, wherein said memory means stores upper and lower limits for each subset, said memory means varying a probability of occurrence for each win/loss tier by changing said upper and lower limits.

12. An apparatus for determining an outcome of a game, according to claim 1, wherein said memory means stores a one-to-one relationship between said outcome identifier and a corresponding one of said plurality of possible outcomes.

13. An apparatus for determining an outcome of a game, according to claim 1, wherein said display means displays multiple rows and columns of indicia which include said resulting series of indicia aligned to identify said resulting outcome.

14. An apparatus for determining an outcome of a game, according to claim 13, wherein said display means aligns said resulting series of indicia identifying said resulting outcome along one of a horizontal, vertical and any other combination of visible reel positions.

15. An apparatus for determining an outcome of a game according to claim 1, wherein at least one of said win/loss tiers corresponds to at least two unique series of indicia, each of said series of indicia being identified by a different outcome identifier.

16. An apparatus according to claim 1, wherein said determining means determines said resulting win/loss tier independent of said resulting series of indicia displayed by said display means.

17. An apparatus according to claim 1, wherein said determining means determines said resulting win/loss tier including said payout prior to said display means displaying said resulting series of indicia.

18. A method for determining an outcome of a game said method comprising the steps of:

providing a plurality of possible outcomes, said outcomes being divided into multiple subsets;

assigning each subset to a win/loss tier and to at least one series of indicia;

generating a random number;

scaling said random number by a factor other than one to obtain a random outcome identifier from a plurality of outcome identifiers;

assigning a plurality of outcome identifiers to corresponding win/loss tiers representing amounts to be paid out;

determining a resulting win/loss tier and a resulting series of indicia based directly upon said outcome identifier; and

displaying the resulting series of indicia corresponding to said outcome identifier.

19. A method for determining an outcome of a game, according to claim 18, further comprising the step of storing multiple tables accessed in said determining step, each table storing at least one unique series of indicia to be displayed, each table corresponds to one of said win/loss tiers.

20. A method for determining an outcome of a game, according to claim 19, wherein said step of storing multiple tables includes storing at least one table containing a single series of indicia representing an only reel combination to be displayed for a corresponding possible outcome and storing at least one table containing more than one series of indicia representing more than one reel combination to be displayed for a corresponding possible outcome.

21. A method for determining an outcome of a game, according to claim 18, wherein said plurality of outcome identifiers represent a plurality of integers separated into said multiple subsets, said subset assigning step including providing a one-to-one relationship between each of said subsets and a corresponding reel combination table, each reel combination table storing at least one unique series of indicia to be displayed.

22. A method for determining an outcome of a game, according to claim 18, wherein said determining step includes comparing said generated outcome identifier to upper and lower limits of each of said multiple subsets and determining within which of said upper and lower limits said outcome identifier falls to determine said corresponding resulting win/loss tier.

23. A method for determining an outcome of a game, according to claim 18, wherein said scaling step includes the step of scaling said random number by a total number of possible outcomes to obtain said outcome identifier.

24. A method for determining an outcome of a game, according to claim 18, wherein said scaling step includes the step of scaling said random number by a total number of said series of indicia corresponding to said resulting win/loss tier to identify said resulting series of indicia to be displayed.

25. A method for determining an outcome of a game, according to claim 18, wherein said determining step includes:

producing a reel combination index based on said outcome identifier and obtaining a series of indicia to be displayed based on said reel combination index.

26. A method for determining an outcome of a game, according to claim 24, wherein said reel combination index represents a scaled value of said outcome identifier.

27. A method for determining an outcome of a game, according to claim 18, further comprising the steps of determining and distributing a payout award based on said resulting win/loss tier corresponding to said outcome identifier.

28. A method for determining an outcome of a game, according to claim 18, further comprising the step of varying a probability of occurrence for each win/loss tier by changing upper and lower limits of each of said multiple subsets between games based on a result of a last game.

29. A method for determining an outcome of a game, according to claim 18, further comprising the step of providing a one-to-one relationship between each outcome identifier and a corresponding one of said plurality of possible outcomes.

30. A method for determining an outcome of a game, according to claim 18, further comprising the step of displaying multiple rows and columns of indicia which include a series of indicia aligned to identify a possible outcome.

31. A method for determining an outcome of a game, according to claim 30, further comprising the step of identifying said resulting win/loss tier by aligning said resulting series of indicia identifying a corresponding possible outcome along one of a horizontal, vertical, and any other combination of visible reel positions.

32. A method for determining an outcome of a game, according to claim 18, wherein the step of determining said resulting win/loss tier and said payout occurs before the step of displaying said resulting series of indicia.

33. A method for determining an outcome of a game, according to claim 18, wherein at least one win/loss tier corresponds to at least two unique series of indicia, each of said series of indicia corresponding to a different outcome identifier.