Slot machine reels having luminescent display elements

• US 6,027,115 A
• Filed: 03/25/1998
• Issued: 02/22/2000
• Est. Priority Date: 03/25/1998
• Status: Expired due to Term

• Current Assignee: IGT (International Game Technology)
• Original Assignee: International Game Technology
• Inventors: Sadler, Richard D., McReynolds, Boone, Griswold, Chauncey W., Mattice, Harold E., Luciano, Robert A. Jr.
• Primary Examiner(s): LAYNO, BENJAMIN
• Application Number:
  US09/047,889
• Time in Patent Office: 699 Days
• Field of Search: 273/143 R, 273/138 A, 273/138.2, 273/138.1, 463/20, 463/31
• US Class Current: 273/143.00R
• CPC Class Codes: G07F 17/3211 Display means
• CPC Class Codes: G07F 17/3213 Details of moving display elements, e.g. spinning reels, tumbling members

Abstract

Slot machines having reels in which the symbol regions contain electroluminescent elements are disclosed. The electroluminescent elements define one or more reel symbols such as cherries, bars, a number "7", etc. In some embodiments, multiple electroluminescent elements are provided in each symbol region. This allows a given symbol to be displayed in multiple formats, with each format representing a different item. For example, a "7" could be displayed with its outline illuminated, with interior cross hatching illuminated, with a combination of the cross hatching and outline illuminated, or with different colors. The permutations can be increased if the symbol regions contains inked images in addition to the light elements. In such cases, when all light elements are turned off, the inked symbol appears.

Claims

1. A reel for a slot machine comprising:

an internal reel portion rotatable about an axis and having an outer circumferential region; and

a reel strip mounted on said outer circumferential region and including

(i) a plurality of symbol regions for displaying symbols to a player of said slot machine, and

(ii) at least two light elements in one or more of said symbol regions, which are configured for independent illumination and viewing from substantially the same viewing angle relative the respective symbol region of the reel strip to provide at least two visibly distinct illumination patterns.

2. The reel of claim 1, wherein said at least two light elements are electroluminescent elements.

3. The reel of claim 1, wherein at least one of said symbol regions includes two or more light elements which provide illumination patterns defining two or more different symbol items.

4. The reel of claim 1, wherein at least one of said symbol regions includes one or more colored light elements which provide illumination patterns in at least two colors to indicate different symbol items.

5. The reel of claim 1, further comprising an inked image of a symbol item provided on a symbol region of said reel strip.

6. The reel of claim 5, wherein the inked symbol item is provided with one or more of said light elements on a defined symbol region, whereby when said one or more light elements are illuminated on said defined symbol region, a first symbol item appears and when said one or more light elements on said defined symbol region are not illuminated, the inked symbol item appears.

7. The reel of claim 6, wherein the defined symbol region includes one or more colored light elements which provide illumination patterns in at least two colors to indicate different symbol items.

8. The reel of claim 1, further comprising a circuit element provided on said reel strip for independently controlling the two or more light elements.

9. The reel of claim 1, further comprising a high frequency AC switch for controlling at least one of said light elements, wherein said high frequency switch includes a bridge comprising (i) a switching transistor which controls delivery of power to at least one of said light elements, and (ii) a plurality of rectifying diodes arranged to force current flowing through said switching transistor to flow in a single direction through said switching transistor regardless of which direction the alternating current flows.

10. A method of performing a game play on a gaming machine, the method comprising:

determining that a user has initiated said game play;

spinning a plurality of reels on said gaming machine;

illuminating a first light element on at least a portion of a symbol on one of said reels to provide an illumination pattern defining a first symbol item;

illuminating a second light element on at least another portion of said symbol to provide an illumination pattern defining a second symbol item, said first symbol item and said second symbol item being viewable from substantially the same viewing angle relative the respective symbol; and

stopping the reels from spinning such that a combination of symbols is displayed through a display window of said gaming machine, wherein the illuminated light elements are activated on said reel.

11. The method of claim 10, wherein at least one of the illuminating the first light element and illuminating the second light element illuminates only a portion of said symbol on one of said reels.

12. The method of claim 10, wherein at least one of the illuminating the first light element and illuminating the second light element illuminates an electroluminescent lighting element provided on said symbol.

13. The method of claim 12, wherein at least one of said illuminating the first light element and illuminating the second light element comprising delivering an AC current to said electroluminescent element, said AC current having a frequency of between about 600 and 900 Hz.

14. The method of claim 10, wherein said gaming machine includes multiple pay lines, and wherein at least one of said illuminating the first light element and illuminating the second light element illuminates only those symbols displayed that comprise a winning combination.

15. The method of claim 10, wherein said game presents a winning combination which requires that at least one of said first and second light elements is lighted, and wherein a combination displaying said at least one of said first and second light elements when it is not lit does not represent a winning combination.

16. The method of claim 10, wherein each illuminated light element displays more than one color to indicate a corresponding symbol.

17. The method of claim 16, wherein the different colors alternate as the reel spins such that the player can see the color changes.

18. A reel strip for use as a display portion of a slot machine reel, said reel strip comprising:

a flexible substrate;

a first electrode formed on said substrate;

one or more electroluminescent elements formed on at least a portion of said first electrode; and

a second electrode formed over at least said electroluminescent elements, wherein at least one of the first and second electrodes is transparent.

19. The reel strip of claim 18, further comprising a second substrate affixed to said second electrode.

20. The reel strip of claim 19, wherein said second substrate includes inked images of symbols.

21. The reel strip of claim 20, wherein the inked images are silk screened images.

22. The reel strip of claim 18, wherein said transparent electrode is made from indium tin oxide, or similar transparent conductive material.

23. The reel strip of claim 18, further comprising non-luminescent dielectric regions formed about said electroluminescent regions, and sandwiched between said first and second electrodes.

24. The reel strip of claim 18, further comprising one or more circuit elements controlling application of power to at least portions of said first and second electrodes.

25. The reel strip of claim 24, wherein said circuit elements comprise integrated circuits.

26. The reel strip of claim 18, wherein each electroluminescent element is capable of displaying more than one color to indicate a corresponding symbol.

27. The reel strip of claim 26, wherein the electroluminescent element is configured such that more than one color alternates as the reel spins such that the player can see the color changes.

28. A method of displaying multiple symbols in a single symbol region of a slot machine, the method comprising:

providing one or more reels, said reel or reels having a plurality of symbol regions thereupon, at least one of said symbol regions being modifiable and having a first countenance and a second countenance, said second countenance being visibly distinct from said first countenance, and said first and second countenances being configured for viewing from substantially the same viewing angle relative the respective symbol region;

displaying at least one first countenance during a first display period; and

modifying at least one of said modifiable symbol regions into said second countenance during a second display period.

29. The method of claim 28, wherein one or more of said modifiable symbol regions can be modified into at least three countenances, whereby each countenance of a given symbol region is visibly distinct from every other countenance of said symbol region.

30. The method of claim 28, wherein said modifying step includes the step of selectively illuminating one or more of said modifiable symbol regions in order to effect said second countenance.

31. The method of claim 30, wherein a given countenance may be represented by a symbol region having no illumination.

32. The method of claim 28, wherein said second countenance of a modifiable symbol region carries a different payout value than the respective first countenance of said modifiable symbol region.

33. A slot machine comprising:

an exterior housing, said housing having a viewing region through which one or more internal reels are visible;

one or more internal reels rotatable about an axis, said reel or reels having a plurality of symbol regions thereupon, at least one of said symbol regions being modifiable and having a first countenance and a second countenance, said second countenance being visibly distinct from said first countenance, and said first and second countenances being configured for viewing from substantially the same viewing angle relative the respective symbol region; and

one or more illuminating devices, said device or devices selectively illuminating one or more of said symbol regions, whereby controlling the one or more illuminating devices controls display of said first and second countenances.

34. The slot machine of claim 33, wherein one or more of said symbol regions can be illuminated into at least three countenances, whereby each countenance of a given symbol region is visibly distinct from every other countenance of said symbol region.

35. The slot machine of claim 33, wherein said illuminating devices are located on said reels.

36. The slot machine of claim 33, wherein said symbol regions are transparent and are covered with a translucent covering layer, whereby said symbol regions are not visible through said viewing region unless illuminated.

37. The slot machine of claim 36, wherein one or more of said illuminating devices are located behind said symbol regions, said device or devices selectively backlighting said symbol regions when lit.

38. The slot machine of claim 37, wherein one or more of said illuminating devices comprise a light diffuser assembly comprised of terminations of a multiplicity of fiber optic bundles, said bundles coupling the diffuser to a light source.

39. The slot machine of claim 33, wherein said second countenance of said illuminated symbol region carries a different payout value than the respective first countenance of said symbol region.

40. A reel for a slot machine comprising:

an internal reel portion rotatable about an axis and having an outer circumferential region;

a reel strip mounted on said outer circumferential region and including

(i) a plurality of symbol regions for displaying symbols to a player of said slot machine, and

(ii) one or more light elements in one or more of said symbol regions, which light elements can be illuminated independently of one another; and

a circuit element provided on said reel strip for independently controlling the one or more light elements.

41. The reel of claim 40, wherein at least one of said symbol regions includes one or more colored light elements which provide illumination patterns in at least two colors to indicate different symbol items.

42. The reel of claim 40, further comprising an inked image of a symbol item provided on a symbol region of said reel strip.

43. The reel of claim 42, wherein the inked symbol item is provided with one or more of said light elements on a defined symbol region, whereby when said one or more light elements are illuminated on said defined symbol region, a first symbol item appears and when said one or more light elements on said defined symbol region are not illuminated, the inked symbol item appears.

44. A method of performing a game play on a gaming machine, the method comprising:

determining that a user has initiated said game play;

spinning a plurality of reels on said gaming machine;

illuminating an electroluminescent element provided on at least a portion of a symbol on one of said reels through an AC current having a frequency of between about 600 and 900 Hz.; and

stopping the reels from spinning such that a combination of symbols is displayed through a display window of said gaming machine, wherein said illuminated light element is activated on said reel.

45. The method of claim 44, wherein said illuminating the light element illuminates only a portion of said symbol on one of said reels.

46. The method of claim 44, wherein said gaming machine includes multiple pay lines, and wherein illuminating the light element only illuminates only those symbols displayed that comprise a winning combination.

47. The method of claim 44, wherein said game presents a winning combination which requires that said light element is lighted, and wherein a combination displaying said light element when it is not lit does not represent a winning combination.

48. The method of claim 44, wherein each illuminated light element displays more than one color to indicate a corresponding symbol.

49. A reel for a slot machine comprising:

an internal reel portion rotatable about an axis and having an outer circumferential region;

a reel strip mounted on said outer circumferential region and including

(i) a plurality of symbol regions for displaying symbols to a player of said slot machine, and

(ii) one or more light elements in one or more of said symbol regions, which light elements can be illuminated independently of one another; and

a high frequency AC switch for controlling at least one of said light elements, wherein said high frequency switch includes a bridge comprising

(i) a switching transistor which controls delivery of power to at least one of said light elements, and

(ii) a plurality of rectifying diodes arranged to force current flowing through said switching transistor to flow in a single direction through said switching transistor regardless of which direction the alternating current flows.

50. The reel of claim 49, wherein at least one of said symbol regions includes one or more colored light elements which provide illumination patterns in at least two colors to indicate different symbol items.

51. The reel of claim 49, further comprising an inked image of a symbol item provided on a symbol region of said reel strip.

52. The reel of claim 51, wherein the inked symbol item is provided with one or more of said light elements on a defined symbol region, whereby when said one or more light elements are illuminated on said defined symbol region, a first symbol item appears and when said one or more light elements on said defined symbol region are not illuminated, the inked symbol item appears.

53. A slot machine comprising:

an exterior housing, said housing having a viewing region through which one or more internal reels are visible;

one or more internal reels rotatable about an axis, said reel or reels having a plurality of symbol regions thereupon, at least one of said symbol regions being modifiable and having a first countenance and a second countenance, said second countenance being visibly distinct from said first countenance; and

one or more illuminating devices, said device or devices including a light diffuser assembly comprised of terminations of a multiplicity of fiber optic bundles, said bundles coupling the diffuser to a light source for selectively illuminating one or more of said symbol regions, whereby controlling the one or more illuminating devices controls display of said first and second countenances.

54. The slot machine of claim 53, wherein said symbol regions are transparent and are covered with a translucent covering layer, whereby said symbol regions are not visible through said viewing region unless illuminated.

55. The slot machine of claim 54, wherein one or more of said illuminating devices are located behind said symbol regions, said device or devices selectively backlighting said symbol regions when lit.

56. The slot machine of claim 53, wherein said second countenance of said illuminated symbol region carries a different payout value than the respective first countenance of said symbol region.

57. A slot machine comprising:

an exterior housing having a viewing region;

a plurality of internal reels rotatable about an axis, each having a plurality of symbol regions thereupon wherein at least one of said symbol regions is modifiable and having a first countenance and a second countenance, said second countenance being visibly distinct from said first countenance; and

at least two backlit illuminating devices configured for selective backlit illumination of the one symbol region, wherein controlling the illuminating devices controls display of the symbol region in a manner visibly distinguishing the first countenance and the second countenance.