Card shuffler with card rank and value reading capability

• US 8,025,294 B2
• Filed: 03/16/2010
• Issued: 09/27/2011
• Est. Priority Date: 09/28/2001
• Status: Expired due to Fees

• Current Assignee: Sg Gaming, Inc. (Light & Wonder Incorporated)
• Original Assignee: SHFL Entertainment Incorporated (Light & Wonder Incorporated)
• Inventors: Grauzer, Atilla, Stasson, James B., Bourbour, Feraidoon, Scheper, Paul K., Schubert, Oliver M., Kelly, James V.
• Primary Examiner(s): Hall; Arthur O.
• Application Number:
  US12/725,245
• Publication Number:
  US 20100225056A1
• Time in Patent Office: 560 Days
• Field of Search: 463 10- 13, 463 17- 22, 463/25, 463/29, 463 40- 42, 463 46- 47, 273/138.1, 273/139, 273/142.B, 273/142.A, 273/142.J, 273/148.A, 273/148.R, 273/148.B, 273/149.P, 273/149.R, 273/150, 273/274, 273292-293, 273/304, 273/306, 273/309
• US Class Current: 273/149.00R
• CPC Class Codes: A63F 1/12 Card shufflers

Abstract

A card shuffling device includes a top surface, a card receiving area for receiving an initial set of playing cards, a randomizing or arranging system for the initial set of playing cards, a collection surface in a card collection area for receiving randomized playing cards, the collection surface receiving cards positioned so that all cards collected are below the top surface of the device, and an elevator for raising the collection surface so that at least some randomized cards are elevated above the top surface of the device. An automatic card shuffler includes a microprocessor with memory. An automated calibration system is provided that calibrates the precise position of the card supporting platform on the elevator so that precise insertion of cards can be performed during card handling procedures.

Claims

1. A device that forms a random set of playing cards comprising:

a top surface and a bottom surface of said device;

a single card receiving area that receives an initial set of playing cards;

a randomizing system that randomizes the order of an initial set of playing cards;

the randomizing system comprising a randomized card collection surface in a card collection area that receives randomized playing cards originally in the single card receiving area one at a time into the card collection area, the randomized card collection surface receiving all cards moved from the single card receiving area;

an image capture device that reads rank and suit of each card before being received on the randomized card collection surface;

an elevator that raises the randomized card collection surface so that all randomized cards are elevated at least to where all randomized cards are exposed for manual removal from the top surface of the device through a opening,

the device forming the random set of playing cards from the initial set of playing cards by steps comprising moving individual playing cards one at a time directly to the card collection area and raising the randomized card collection surface to a level that exceeds normal shuffling elevation of the elevator; and

a moveable cover over the elevator that when moved, exposes said opening for manual removal of the randomized playing cards.

2. The device of claim 1 wherein the elevator raises all randomized cards above the top surface of the device and the moveable cover is automatically raised, allowing randomized cards to rise above the top surface of the device through an opening created by moving the moveable cover over the elevator.

3. The device of claim 1 wherein at least one pick-off roller removes cards one at a time from the card receiving area and moves cards one at a time towards the randomizing system and the image capture device is positioned so that the image capture device can read a card only after the card has been moved by the at least one pick-off roller.

4. The device of claim 3 wherein at least one pair of rollers receives each card from the at least one pick-off roller before the image capture device can read each card.

5. The device of claim 4 wherein a microprocessor controls movement of the pick-off roller and the at least one pair of rollers.

6. The device of claim 4 wherein when a first card being moved by the pick-off roller is being moved by the at least one pair of rollers, movement of the pick-off roller is altered so that no card other than the first card is moved by either the pick-off roller or the at least one pair of rollers.

7. The device of claim 1 wherein the randomization system moves one card at a time into an area overlying the randomized card collection surface after the one card has been read for suit and rank.

8. The device of claim 7 wherein the collection area is bordered on two opposed sides by two movable card gripping elements.

9. The device of claim 8 wherein an insertion point to the card collection area is located below a bottom edge of the two movable card gripping elements.

10. The device of claim 8 wherein the randomized card collection surface is vertically positionable within the card collection area.

11. The device of claim 10 wherein the randomized card collection surface is moved by a motivator that is able to move incremental vertical distances that are less than the thickness of a playing card.

12. The device of claim 11 wherein the motor is a stepper motor or an analog motor.

13. The device of claim 1 wherein the randomizing system positions one card at a time into a randomized set of playing cards over the randomized card collection surface.

14. The device of claim 1 wherein a sensor is present along a line of movement of cards in the device within the single card receiving area or adjacent the single card receiving area and after the image capture device, the sensor indicating a trigger position of a moving card to initiate a timed capture of an image by the image capture device.

15. The device of claim 14 wherein at least a second sensor identifies the position of the randomized card collection surface so as to place a top card in the collection area at a position that is level with or above the bottom of at least one card gripping element that is movable from at least one side of the card collection area towards playing cards within the card collection area.

16. The device of claim 15 wherein the microprocessor is programmed to determine a distance that the randomized card collection surface must be vertically moved to position at least one specific card at a bottom edge of the at least one card gripping element when the card gripping element moves to contact cards within the card collection area.

17. The device of claim 16 wherein the microprocessor is programmed to lower the randomized card collection surface within the card collection area after the at least one element has contacted and supported cards within the card collection area, creating two segments of cards and a gap between the segments.

18. The device of claim 17 wherein the microprocessor directs movement of an individual card into the gap, between the two segments of cards.

19. The device of claim 15 wherein the at least one card gripping element comprises at least two gripping elements, at least one of which moves from a side of the card collection area towards playing cards within the card collection area.

20. The device of claim 15 wherein the microprocessor directs movement of an individual card into a gap in cards in the collection area between two segments of cards created by support of cards by at least one card gripping element.

21. The device of claim 1 wherein at least one microprocessor is present in the device and the at least one microprocessor controls vertical movement of the randomized card collection surface and camera triggering.

22. The device of claim 1 wherein a microprocessor is controllably connected to the device, the microprocessor directing movement of playing card moving elements within the device, the microprocessor randomly assigning potential positions for each card within the initial set of playing cards, and then directing the device to arrange the initial set of playing cards into those randomly assigned potential positions to form a randomized final set of playing cards with each card in the randomized final set having been read for at least rank.

23. The device of claim 1 wherein a program is embedded in memory in the device that is activated to move cards from the single card receiving area to the playing card collection area without randomization, rank and suit of each card being read between the single card receiving area and the playing card collection area to verify the content of a complete set of cards placed into the single card receiving area.

24. A device that forms a random set of playing cards comprising:

a top surface and a bottom surface of said device;

a receiving area for an initial set of playing cards;

a randomizing system that randomizes an initial set of playing cards by moving random ones of the playing cards one-at-a-time from the receiving area onto a single randomized card collection surface;

the single randomized collection surface is in a card collection area that receives randomized playing cards;

an elevator that raises the single collection surface within the card collection area to make all randomized playing cards available for manual removal through an opening in the top surface of the device; and

an image capture system that reads at least a rank of each at least one card before the at least one card is inserted onto the single randomized card collection surface into a single set of cards on the single randomized card collection surface.

25. The device of claim 24 wherein an at least one card supporting element comprises an element on at least one side of the card collection area that can move inwardly within the card collection area to contact and support the predetermined number of cards within the card collection area, and a moveable hinged or sliding cover over the elevator to expose said opening.

26. The device of claim 25 wherein the at least one card supporting element comprises at least two opposed card supporting elements that move inwardly within the card collection area to contact and support the predetermined number of cards within the card collection area.

27. The device of claim 25 wherein a microprocessor communicatively connected to the device is programmed to lower the single randomized card collection surface within the card collection area after the at least one card supporting element has contacted and supported cards within the card collection area, creating two segments of cards and a gap between the segments.

28. The device of claim 27 wherein the microprocessor directs movement of an individual card into the gap between the two segments of cards.

29. The device of claim 24 wherein a microprocessor is communicatively connected to the device and the microprocessor is programmed to determine a distance that the single randomized card collection surface must be vertically moved to position at least one specific card position other than a top card at a bottom edge of an at least one card supporting element when the card supporting element moves to contact cards within the card collection area.

30. The device of claim 24 wherein a memory records the reading of each at least one card inserted into a set of cards and the position of each card within a final set of cards is identified to create an index of all cards in the final set of cards.

31. A device for forming a random set of playing cards comprising:

a top surface and a bottom surface of said device;

a single card receiving area that receives an initial set of playing cards;

a randomizing system that randomizes an order of an initial set of playing cards;

a collection surface in a card collection area that receives randomized playing cards one at a time into the card collection area, the randomized card collection surface receiving cards so that all cards are received below the top surface of the device;

an image capture device that reads rank and suit of each card after the card has begun leaving the single card receiving area and before being received on the randomized card collection surface;

an elevator that raises the randomized card collection surface so that at least two randomized cards are elevated at least to the top surface of the device to an opening through which all randomized playing cards may be manually removed; and

a moveable hinged cover, elevating cover or sliding cover is over the elevator to expose said opening.

32. An automatic card shuffling device comprising:

a microprocessor with memory that controls the operation of the device;

an in-feed compartment that receives playing cards to be randomized;

a playing card moving mechanism that moves playing cards individually from the in-feed compartment into a playing card mixing compartment,

an image capture system that identifies at least a rank of each playing card as the card is moved towards, into or through the playing card mixing compartment, and before playing card removal from the device;

a card mixing compartment that identifies a position for each playing card in each set of playing cards formed in the playing card mixing compartment,

a memory that records at least the rank of each playing card in each set of playing cards formed in the playing card mixing compartment, wherein the playing card mixing compartment comprises a plurality of substantially vertical supports, an opening for the passage of playing cards from the in-feed compartment, a moveable lower support surface, at least one stationary gripping element, a lower edge proximate the opening, and a gripping arm suspending playing cards above the opening; and

an elevator that raises and lowers the moveable support surface towards an opening at a top most surface of the playing card shuffling device.

33. The device of claim 32 wherein the image capture system identifies at least suit and rank for each playing card as the card is moved towards, into or through the playing card mixing department, and before removal from the device.

34. The device of claim 32 wherein a final set of playing cards comprising all cards and at least fifty-two playing cards in the device are recorded in memory informationally connected to the device with respect to position within the final set and at least the rank of each playing card in the final set of playing cards.

35. The device of claim 34 wherein suit and rank of each card in the final set of playing cards is recorded.

36. The device of claim 35 wherein a position of the elevator is randomly selectable and the support surface is movable to the selected position, and after the gripping element grasps at least one side of the playing cards, the elevator lowers, creating a space beneath the gripping element, wherein a playing card is moved from the in-feed compartment through the opening and into the space, causing randomization of the playing cards.

37. The device of claim 36 wherein two stationary gripping elements are provided to grip opposite sides of a set of playing cards in the mixing compartment.

38. A method of randomizing a group of playing cards, comprising the steps of:

placing a group of cards to be randomized into a playing card in-feed tray;

removing playing cards individually from the playing card in-feed tray and delivering the playing cards into a randomized playing card collection area, the randomized playing card collection area having a moveable lower surface, and a stationary opening that receives playing cards from the in-feed tray;

elevating the moveable lower surface to a randomly determined height;

grasping at least one edge of a group of playing cards in the playing card collection area at a point immediately above the stationary opening;

lowering the moveable lower surface to create an opening in a stack of playing cards formed on the lower surface, the opening located immediately beneath a lowermost point where the playing cards are grasped;

inserting a playing card removed from the in-feed tray into the opening;

after randomizing all playing cards, elevating a collection of randomized playing cards towards a top most surface of the device so that all randomized playing cards may be manually removed as a single stack of randomized playing cards; and

reading at least a rank of each playing card after the card is individually removed from the playing card in-feed tray and before the card has been inserted into the opening in the stack of playing cards.

39. The method of claim 38 wherein after a playing card has been inserted, and when a presence of at least one additional playing card in the playing card in-feed tray is sensed, the elevator moves to another randomly determined height, creating another opening and while elevating the collection of randomized playing cards to the top most surface of the device, automatically moving a moveable hinged cover or sliding cover over the elevator to expose an opening in the top most surface of the playing card shuffling device through which all randomized playing cards may be manually removed.

40. An automatic playing card shuffler comprising:

a housing mounted into a gaming table surface;

a card receiver that accepts a group of cards to be shuffled;

a randomizing system that randomizes an order of an initial set of playing cards, wherein an image capture device identifies at least a rank of each playing card in the initial set of playing cards before each card is positioned on a collection surface that receives randomized cards;

the collection surface that receives randomized playing cards;

an elevator that raises the collection surface to an elevation proximate the gaming table surface to which the housing is mounted so that all randomized cards on the collection surface are exposed for manual removal; and

a microprocessor that controls the operation of the playing card shuffler.

41. The automatic card shuffler of claim 40 further comprising an automatically movable cover that is closed at least a portion of the time over at least one of the card receiver and collection surface.

42. The automatic card shuffler of claim 40 wherein a program is embedded in memory in the device that is activated to move cards from the single card receiving area to the playing card collection area without randomization, rank and suit of each card being read between the single card receiving area and the playing card collection area to verify the content of a complete set of cards placed into the single card receiving area.

43. A device for forming a random set of playing cards comprising:

a top surface and a bottom surface of said device;

a single card receiving area that receives an initial set of playing cards;

a randomizing system that randomizes an order of an initial set of playing cards;

a single card collection surface in a playing card collection area that receives randomized playing cards one at a time into the playing card collection area to form a single randomized set of playing cards, the single card collection surface receiving playing cards so that all playing cards from the initial set of playing cards are received below the top surface of the device;

an image capture device that reads a rank and suit of each card after the card has begun leaving the single card receiving area and before being received on the single card collection surface; and

and access enabling manual removal of the single randomized set of playing cards as a complete set, the access comprising an opening covered by a moveable cover.

44. The device of claim 43 wherein the single card collection surface comprises a surface that is moved by an elevator and raising of the elevator to enable manual removal of the single randomized set of playing cards automatically moves a hinged cover or the sliding cover to expose the opening.

45. The device of claim 44 wherein an elevator that raises the single card collection surface so that at least two randomized cards are elevated above to the top surface of the device for removal.

46. The device of claim 45 wherein there is an automatically moveable cover over the elevator as part of the access.

47. The device of claim 43 wherein multiple playing cards are present only in the single card receiving area and the playing card collection area.

48. The device of claim 43 wherein a program is embedded in memory in the device that is activated to move cards from the single card receiving area to the playing card collection area without randomization, rank and suit of each card being read between the single card receiving area and the playing card collection area to verify the content of a complete set of cards placed into the single card receiving area.