PRIORITY This application claims the benefit of priority under 35 U.S.C. §119 of provisional application Ser. No. 60/572,615, filed May 19, 2004, the contents of which are hereby incorporated by reference in their entirety as if fully set forth.
COPYRIGHT A portion of the disclosure of this patent document contains material which is subject to copyright protection. The copyright owner has no objection to the facsimile reproduction by anyone of the patent disclosure, as it appears in the Patent and Trademark Office patent files or records, but otherwise reserves all copyright rights whatsoever.
FIELD OF THE INVENTION The present invention relates generally to gaming machines and, more specifically, to a gaming machine with light altering features.
BACKGROUND OF THE INVENTION Gaming machines, such as slot machines, video poker machines and the like, have been a cornerstone of the gaming industry for several years. Generally, the popularity of such machines with players is dependent on the likelihood (or perceived likelihood) of winning money at the machine and the intrinsic entertainment value of the machine relative to other available gaming options. Players also appreciate the reliability of a gaming machine, as do the casino operators. Shrewd operators consequently strive to employ the most entertaining, exciting, and reliable machines available because such machines attract frequent play and hence increase profitability to the operator.
Gaming machines display a variety of visual attraction devices, models, signs, and other forms of information. Methods used to display these items include fixed permanently printed glass, video displays, fixed artwork, model and marquee displays, and various lighting techniques.
Lighting technology used in most gaming machines today include incandescent, fluorescent, LED, and cold cathode fluorescent lamp (CCFL). These techniques are used for many applications including backlighting, direct lighting of model displays, bezel lighting, tower lighting and others. A specific example used in most gaming machines today is the backlighting approach, most commonly associated with display glass and game control buttons. Typically incandescent or florescent, this application is relatively inexpensive and safe due to low wattage requirements and because the light source is hidden. This technique is limiting because the lighting sources used can fail, requiring occasional replacement and some embarrassment, as the machine is not then presented in its finest form. The visual display, because of its flat or two-dimensional presentation, offers less design options and thus becomes common and less interesting.
A more interesting signage or artwork effect can be obtained by using CCFL or neon. But CCFL has limitations, as well. The fragility of the glass and the higher voltage requirements result in safety concerns that require manufacturers that offer CCFL, especially in neon form, to use shields to prevent accidents. Higher costs are another prohibitive factor when considering CCFL.
LEDs, while reliable and inexpensive to power, are individual pinpoints of light that require many numbers to create the illusion of a single lighted object, when viewed from a distance. When viewed at close range, the effect is obvious and unique design options are numbered.
Fluorescent lighting is also limiting because of its required shape. Restricted to tubes or round shapes, this option limits the development of interesting lighting design. Fluorescent lighting is also as fragile as CCFL adding safety concerns to its design issues.
An inexpensive, safe, alternative lighting method that disperses light from an embedded source within a substance and emits it in a uniform fashion across its entire viewable surface, or a method that passes light (virtually invisibly) through a transparent objects structure and displays it specifically at an altered point on the object, would benefit the manufacturer through cost savings and new design options, and benefit the player through safer, more interesting, game presentations and entertaining visuals.
SUMMARY OF THE INVENTION In accordance with one aspect of the present invention, a lighting device is presented that disperses light across its viewable surface providing a look similar to neon. Comprised of LEDs embedded within a material that can be cast into any shape, the method and materials used in the lighting device introduce new design possibilities and reduce safety issues typically associated with glass materials used in many other lighting applications. In accordance with another aspect of the present invention, a lighting device is offered that encloses a colored light source and its associated electronic components within the gaming machine's housing, directs emitted light from the source through the structure of a transparent object positioned over the lighting source, and displays the color and intended intensity of the light source on an altered surface on the transparent object.
BRIEF DESCRIPTION OF THE DRAWINGS The foregoing and other advantages of the invention will become apparent upon reading the following detailed description and upon reference to the drawings in which:
FIG. 1 is a perspective view of a gaming machine with embedded LED lighting in accordance with the present invention
FIG. 2 is a block diagram of a control system suitable for operating the gaming machine;
FIG. 3 is a front view of a gaming machine marquee with embedded LED lighting.
FIG. 4 is a perspective view of an individual marquee letter made with embedded LED lighting technology.
FIG. 5ais a front view of the individual marquee letter ofFIG. 4.
FIG. 5bis a front view showing the embedded components within the individual marquee letter ofFIG. 4.
FIG. 5cis a cutaway view showing the embedded components within the individual marquee letter ofFIG. 5b.
FIG. 6 is a perspective view of an alternative signage display using embedded LED lighting technology.
FIG. 7ais a front view of the individual signage display ofFIG. 6.
FIG. 7bis a front view showing the embedded components within the individual signage display ofFIG. 6.
FIG. 7cis a cutaway view showing the embedded components within the individual signage display ofFIG. 7b.
FIG. 8 is a perspective view of a candle device for a gaming machine in accordance with the present invention.
FIG. 9ais a front view of the candle device ofFIG. 8.
FIG. 9bis a front view showing representations of the embedded components within the candle device ofFIG. 8.
FIG. 10 is a front view of an alternative candle device.
FIG. 11 is a top view of the candle device ofFIG. 10.
FIG. 12 is a cutaway view of the candle device ofFIG. 10.
FIG. 13 illustrates a candle device using acrylic light pipe technology.
While the invention is susceptible to various modifications and alternative forms, specific embodiments have been shown by way of example in the drawings and will be described in detail herein. However, it should be understood that the invention is not intended to be limited to the particular forms disclosed. Rather, the invention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
DETAILED DESCRIPTIONFIG. 1 depicts agaming machine10 operable to conduct a slot-based wagering game. In operation, the gaming machine receives a wager from a player to purchase a “play” of the game. In a “play” of the game, the gaming machine generates at least one random event and provides an award to the player for a winning outcome of the random event. The random event may be internally or remotely determined using a random number generator or pooling schema. To portray the random event and outcome to the player, the gaming machine includes aprimary display12. If the wagering game is a reel slot game, for example, theprimary display12 includes a plurality of symbol-bearing reels that are rotated and stopped to place symbols on the reels in visual association with the pay line.
Theprimary display12 may be implemented with a CRT, LCD, plasma, mechanical reels (in the case of a reel slot game), or other type of display known in the art. Theprimary display12, especially if implemented in video, may be overlaid with a touch screen to facilitate interaction with the player. In the illustrated embodiment, thegaming machine10 is an “upright” version in which theprimary display12 is oriented vertically relative to the player. Alternatively, the gaming machine may be a “slant-top” version in which theprimary display12 is slanted at about a thirty-degree angle toward the player of thegaming machine10.
FIG. 2 is a block diagram of a control system suitable for operating the gaming machine. Money/credit detector22 signals a central processing unit (CPU)20 when a player has inserted money or played a number of credits. Using abutton panel16 and/or a touch screen18 (also seeFIG. 1), the player may select any variables associated with the wagering game and place his/her wager to purchase a play of the game. In a play of the game, theCPU20 generates at least one random event using a random number generator (RNG) and provides an award to the player for a winning outcome of the random event. Alternatively, the random event may be generated by a remote computer using an RNG or pooling schema and then transmitted to the gaming machine. TheCPU20 operates thedisplay12 to represent the random event(s) and outcome(s) in a visual form that can be understood by the player. In addition to theCPU20, the control system may include one or more additional slave control units for operating thedisplay12 and any secondary displays.
System memory24 stores control software, operational instructions and data associated with the gaming machine. In one embodiment, thesystem memory24 comprises a separate read-only memory (ROM) and battery-backed random-access memory (RAM). However, it will be appreciated that thesystem memory24 may be implemented on any of several alternative types of memory structures or may be implemented on a single memory structure. Apayoff mechanism26 is operable in response to instructions from theCPU20 to award a payoff to the player. The payoff may, for example, be in the form of a number of credits. The number of credits is determined by one or more math tables stored in thesystem memory24.CPU20 controls a number of peripheral devices via serial links. One of the peripheral devices may, for example, be acandle device19. Amicrocontroller23 on or connected to thecandle device19 responds to commands from theCPU20. Themicrocontroller23 signals adrive circuit25 to “switch” certain logic circuits on or off. In this example, the circuits provide power to a peripheral device, in this example, light emitting diodes (LEDs)27.
FIG. 3 presents a front view of thegaming machine marquee30 depicted inFIG. 1. Themarquee30 is for a video reel slot game called “CLINT EASTWOOD A FISTFUL OF DOLLARS”. In this embodiment, the letters shown on thismarquee30 are lit with light emitting diodes (LEDs) embedded in a substance that can be poured and hardens, such as a resin or acrylic material, with uniform light scattering characteristics creating a presentation similar to neon.
FIG. 4 is a perspective view of a letter “E”34 from the “CLINT EASTWOOD”32 group of letters (seeFIG. 3) on thegaming marquee30. The letter “E”34 is comprised of an outer shell orhousing36 made of plastic and alight scattering material38 set in thehousing36. Thehousing36 is non-translucent and creates a cup comprising all sides of the letter “E”34 except the front. Thelight scattering material38 is a solid that emits light across its entire viewable surface from within, in a uniform, consistent fashion. The light scattering material typically contains light dispersing particles uniformly added to create a milky or frosted appearance.
FIG. 5ashows a front view of the letter “E” with thehousing36 and thelight scattering material38.FIG. 5bshows components embedded within thelight scattering material38. At the back or bottom of the cup shape of the letter “E”34, a printed circuit board (PCB)41 is positioned.LEDs42 of the desired color for the lettering are set into predetermined positions on thePCB41. The predetermined positions are based on a uniform display of the lighted, viewable surface of the letter, in this example, the front.FIG. 5cis a cutaway view of the lower portion of the letter “E”34 ofFIG. 5b. The position of thePCB41 can be easily viewed at the bottom of the cup created by thehousing36.LEDs42 are inserted into thePCB41, typically by soldering into positions predetermined for this particular component.Light scattering material38 covers the PCB/LED assembly. To power the PCB/LED assembly, wiring40 is connected to thePCB41 through thehousing36 at the back or bottom of the letter “E”34. Thewiring40 is typically soldered into a circuit on thePCB41 and is connected to a power source on the gaming machine. Circuits on thePCB41 carry the necessary power to eachLED42. It will be appreciated that any number of techniques can be used to supply power to the LEDs including flexible circuits and direct wiring. Also protruding from the back or bottom of the letter “E”34 are threaded mountingstuds44. These are used to secure the letter to the marquee. Thewiring40 and the threaded mountingstuds44, both passing through thehousing36, do so with enough tolerance that during the casting process, minimal or no liquidlight scattering material38 passes through theouter housing36 through these points. Further information regarding thelight scattering material38 and the method of reflecting and dispersing light from the embedded light source (LED42) is disclosed in U.S. Pat. No. 6,592,238 Cleaver, et al, which is incorporated herein by reference in its entirety.
FIG. 6 presents an alternative use of the embedded LED technology in a gaming machine. Asignage display46, “MAHJONGG MONEY”, usingglass artwork50 that allows light to pass through predetermined areas on the surface, incorporates the embedded LED technology as the light source behind theglass artwork50. Thehousing48 of thesignage display46 is non-translucent and creates a cup comprising all sides of thesignage display46.
FIG. 7ashows a front view of thesignage display46 “MAHJONGG MONEY”. Thehousing48 and theglass artwork50 are visible in this view. With theglass artwork50 removed,FIG. 7bis a similar view toFIG. 7a.FIG. 7bshows components embedded within thelight scattering material38. At the back or bottom of the cup shape of thesignage display46, a printed circuit board (PCB)54 is positioned.LEDs56 of the desired color for the back lighting are set into predetermined positions on thePCB54. The predetermined positions are based on a uniform display of the lighted surface behind the glass artwork shown inFIG. 7a.FIG. 7cis a cutaway view of thesignage display46 ofFIG. 7a. The position of thePCB54 is at the bottom of the cup created by thehousing48.LEDs56 are inserted into thePCB54, typically by soldering into positions predetermined for this particular component.Light scattering material38 covers the PCB/LED assembly. To power the PCB/LED assembly, wiring52 is connected to thePCB54 through thehousing48 at the back or bottom of thesignage display46. Thewiring52 is typically soldered into a circuit on thePCB54 and is connected to a power source on the gaming machine. Circuits on thePCB54 carry the necessary power to eachLED56. Also protruding from the back or bottom of thesignage display46 are threaded mountingstuds62. These are used to secure thesignage display46 to the gaming machine. Thewiring52 and the threaded mountingstuds62, both passing through thehousing48, do so with enough tolerance that during the casting process, minimal or no liquidlight scattering material38 passes through thehousing48 through these points.
As will be appreciated by those with ordinary skill in the art, the method by which the light component is created can be any number of molding techniques including casting and removing the form or direct pour into a mold or housing that is then used in the application, as in this embodiment. The positioning of the embedded light sources, for example, LEDs, is such that the general area illuminated by an individual LED overlaps that of each adjacent LED within the light scattering material creating the appearance of the entire component being a singular light source.
As shown inFIG. 1, a candle device19 (also known as a tower light) on top of gaming machines, used to define the denomination of a game, alert casino employees of an error or fault condition, or identify a winning outcome can be manufactured using the light scattering material with embedded LEDs. The LEDs can be of differing, automatically changeable, colors depending on the requirements of the lighting device. Referring toFIG. 8, an external perspective view, thecandle device19 is comprised of ahousing60 and thelight scattering material38.FIG. 9ais a front view of thecandle device19 showing thehousing60, thelight scattering material38 and adivider68 that separates the top and bottom of thecandle device19. This allows for varying light presentations depending on the requirements of the game or the casino.FIG. 9bshows the embedded components within thecandle device19. In the upper half of thecandle device19, a number ofLEDs64 connected in circuit to aPCB62 is attached to the back of the candle device's19housing60. The bottom half of thecandle device19 also has a number ofLEDs64 connected to aPCB66. TheLEDs64 in both halves can be the same color or two separate colors. TheLEDs64 can also be mixed and different colors of lighting can be displayed for different requirements. For example, the top of thecandle device19 can contain an even mix of red white andblue LEDs64. Thecandle device19 could then display a flashing white light (using the white LEDs64) when a player presses a button to signal a casino employee for help or it could display a solid blue light (using the blue LEDs64) for another purpose. As will be appreciated by those with ordinary skill in the art, the number of different colors that can be displayed, the type of lighting (flashing or static), the sequencing of the flashing, and even the device containing the controlled lighting is dependent on the requirements of the game, of the casino, and most notably, of the jurisdictional requirements governing the casino. A gaming manufacturer may develop software with all these requirements in mind, and the candle device automatically responds to the gaming software when an event occurs. Thecandle device19 may be controlled serially via a serial link that comprises a single cable, which replaces a plurality of wires found in conventional gaming devices. Examples of suitable serial links are a universal serial bus (USB), IEEE1394, RS-232, RS-485, Ethernet, or the like. The CPU20 (seeFIG. 2) communicates with a microprocessor on a PCB in or attached to thecandle device19.
Controlling thecandle device19 serially also has other advantages. The candle device's physical configuration would not need altering for different gaming software. The gaming machine software can be engineered to automatically display candle device colors based on a predetermined set of criteria or the candle device can be manually set by a technician through a command line interface, for example. The number of tiers on acandle device19 can be preprogrammed for specific games. Also, the software controlling thecandle device19 can be separated from the gaming code reducing the necessity of submitting gaming software for review if changes are needed in the candle device's code. The candle device is also a vulnerable point for electro-static discharge (ESD). Using a serial interface based on differential signals with its own power connection would substantially reduce the susceptibility to ESD events. Another advantage to thecandle device19, with the potential of displaying a number of different colors, is the reduced difficulty in manufacturing different candle devices to support varying casino requirements and the elimination of physically changing candle lamp colors in the field.
In another embodiment, a candle device for a gaming machine incorporates a vertically positioned acrylic pipe that directs light upward from LEDs positioned under the bottom edges of the pipe. The light from the LEDs is directed upward through the walls of the pipe to a viewing area at the top of the pipe.FIG. 10 shows a front view of such acandle device58 constructed from acrylic pipe.Light pipe72 is attached to aPCB76.PCB76 acts as a base and provides power to the LEDs that provide illumination for the candle device assembly.LEDs78 are positioned directly beneath the walls oflight pipe72 and are connected to thePCB76. TheLEDs78 may be colored, clear, white, or a combination. The inner and outer surfaces oflight pipe72 are smooth. Light from theLEDs78 travels up through the walls oflight pipe72 reflecting of theinner wall82 and theouter wall80. A light-dispersingsurface74 at the top portion of theinner wall82 is used to deflect the light traveling up the wall oflight pipe72 and thus displaying its brightness and color. Altering a portion of theinner wall82 of thelight pipe72 creates the light-dispersingsurface74. Light emitted from theLEDs78 will only be emitted by the light-dispersingsurface74. As will be appreciated by those with ordinary skill in the art, the material used to create this embodiment of thecandle device58 can be of any substance supporting the characteristics required to transmit light between its inner and outer surface and display it once the surface is altered (changes the index of reflection). A number of materials can be used including glass, clear plastics, and other similar substances. The method by which the light-dispersingsurface74 is created may also be any that supports changing the index of reflection such as etching, grooving, adding a prism like material, or coating the surface.
Another aspect of this embodiment is the positioning of thecandle device58 in respect to the top of the gaming machine.FIG. 10 shows a representation of the top84 of the gaming machine. ThePCB76 is positioned well below the surface of the top84 of the gaming machine providing excellent electro-static discharge (ESD) protection for the electronic components contained onPCB76.Light pipe72 can be fitted with a cap to prevent objects from entering the top of the pipe and damaging the components and/or circuitry on thePCB76.
FIG. 11 is a top view of thecandle device58 showing an example of the proximity of theLEDs78, connected toPCB76, to the wall oflight pipe72. TheLEDs78 emit light that travels up through the walls oflight pipe72.FIG. 12 is a cutaway view ofcandle device58 showing the behavior of the light86,88 emitted from theLEDs78 into the wall oflight pipe72.LEDs78, connected toPCB78 emit light as directed by the gaming machines CPU. Emitted light86 reflects off ofouter wall80 andinner wall82 as it travels upward. When it reaches the light-dispersingsurface74, the index of reflection is changed (by the different characteristics of the light-dispersing surface74) and avisible light88 is now viewable outside oflight pipe72.FIG. 13 shows another example of acandle device58 using the acrylic light pipe technology. In this example, two light pipes are being used to present multiple lights. As will be appreciated by those with ordinary skill in the art, multiple pipes may be used based on the requirements for this type of lighting and is only limited by the size of the device versus the amount of space available to reasonably present it. Outerlight pipe72 andinner light pipe70 reside on thesame PCB76 that, in turn, is safely positioned below the top84 of the gaming machine. Both pipes have the light-dispersingsurface74. Because the majority of theouter light pipe72 is clear, the light dispersed from the light-dispersingsurface74 on theinner light pipe70 will easily show through theouter light pipe72.Light pipe72 shows acap90 placed on top to prevent debris from falling into either light pipe and damaging components within.
While the present invention has been described with reference to one or more particular embodiments, those skilled in the art will recognize that many changes may be made thereto without departing from the spirit and scope of the present invention.
For example, the embedded LED technology described in this invention can be used in a number of places on a gaming machine. Lighted buttons can be made from thelight scattering material38 with LEDs embedded within. A narrow band made from thelight scattering material38 with embedded LEDs can be positioned around a monitor or other peripheral devices on the gaming machine.
An alternative for the candle device incorporating a transparent pipe is the inclusion of a logo as the altered surface of the inner wall. Other means of displaying wording or a logo can be incorporated as well including the use of decals, screen-printing, paint or other means of altering the visibility of the light emanating from the altered surface.
There are also additional embodiments of the invention. One embodiment is directed to a gaming machine for conducting a wagering game, where a game display displaying the wagering game and at least one illumination device includes a light scattering material and a light source embedded in the material. The illumination device may be powered through an electrical connection element. The element supports at least one light source. The light scattering material may be solidified from a non-solid state. The light scattering material may emit the color of the embedded light source. The light scattering material is contained within a housing.
Another embodiment is directed to an illumination device for a gaming machine. The gaming machine is operable to conduct a wagering game. The illumination device includes (a) at least one light source; (b) an electrical connecting element for providing power to the light source; and (c) a light scattering material for displaying light from the light source in an effectively uniform manner. The electrical connecting element supports one or more light sources. The light scattering material contains light dispersing particles. The light scattering material is solidified from a non-solid state and may emit the color of the internal light source. The light scattering material is contained within a housing. The illumination device is selected from a group consisting of marquee artistic elements including lettering, a candle extending from a top of the gaming machine, bezel lighting for the game display or peripheral devices, lighted game play buttons, and other artistic game lighting.
An additional embodiment is directed to a gaming device having a main controller for conducting a wagering game, a candle device, and a peripheral controller coupled to the main controller via a serial link. The peripheral controller directly controls the candle device. The candle device includes a light source and a drive circuit. The peripheral controller may be coupled to the light source via the drive circuit. The peripheral controller may be located on or connected to the candle device.
A further embodiment is directed to a peripheral for a gaming device. The peripheral has a candle device, a peripheral controller that directly controls the candle device, and a serial link for coupling the peripheral controller to a main controller. The peripheral controller may include an input/output microcontroller. The candle device may include a light source and a drive circuit. The peripheral controller may be coupled to the light source via the drive circuit. The peripheral controller may be located on or connected to the candle device.
Another embodiment is directed to a gaming machine for conducting a wagering game. The gaming machine includes a game display for displaying the wagering game, and at least one illumination device. The illumination device includes a light source, a transparent non-flat member, and a light-dispersing surface along a side of the member. The light source is positioned to emit light through the member such that the light impinges upon the light-dispersing surface and becomes generally apparent to a player. The member may have a round, elliptical, or polygonal shape. The light-dispersing surface may be positioned on an inner or outer surface of the member. The light-dispersing surface may be an etching, grooving, or coating. The light-dispersing surface may be arranged to create shapes, logos, or wording. The light-dispersing surface may include light-blocking material added to create shapes, logos, or wording. The light-blocking material may include decals, screen-printing, or paint.
Each of these embodiments and obvious variations thereof is contemplated as falling within the spirit and scope of the claimed invention, which is set forth in the following claims.