Patent Grant
RE43037
The present application is related to co-pending U.S. Reissue application Ser. Nos. 11/542,041 and 11/542,042 filed Oct. 2, 2006.
1. Field of the Invention
The present invention relates generally to a method and apparatus for operation of a gaming device, such as a slot machine and, more particularly, for reverse payout play of such a gaming device.
2. Description of the Related Art
Owners and operators of gaming devices are constantly searching for new and innovative ways of attracting players to the gaming devices in order to keep them gambling for prolonged periods of time. One factor in determining whether a player will continue playing a gaming device is the player's perception of the odds of winning. When a player feels lucky and perceives the odds of winning to be high, the player will likely continue playing. On the other hand, when the player feels unlucky and perceives the odds of winning to be low, the player will likely stop playing or, even more troubling to the owner or operator of the gaming devices, travel to another casino where he perceives his odds of winning to be better.
It is a general belief that the odds of winning at a gaming device depend on the past activity of the gaining device. For example, players often perceive the odds of winning to be greater on a slot machine that has not recently paid out any jackpots. In gaming vernacular, such a machine is thought to be “due to hit.” Other times, such as immediately after hitting a jackpot, players perceive the odds of future winnings on a particular slot machine to be low. Consequently, after winning a jackpot, a player may stop playing, thereby causing the casino owner to lose revenue. Because the player has no way to take advantage of what he believes to be a cold machine or cold casino, many players feel as though they need to move to a different machine or a different casino.
Some casino games have avoided this problem by allowing the player to place a bet either against the house or for the house. In the game of craps, for example, the objective of the game is for the shooter to either win on the initial come-out throw or throw certain numbers twice before rolling a seven. In making a 8pass lines bet, the player is betting that he will accomplish this objective. If he does not think that he will be successful, the payer may make a ôdont passö bet in which the player is effectively able to bet with the house. A player experiencing a run of bad luck, for example, may effectively bet with the house by betting against himself or the shooter (with the house) by electing to make the ôdont passö bet.
Unfortunately, no method exists which allows betting ôwith the houseö for gaming devices. Thus, a need exists for a method of play and a gaming device which encourages a player to continue playing on a gaming device despite feeling unlucky or perceiving poor odds of winning on a given gaming device.
The problems identified above are solved and a technical advance is achieved by providing, in accordance with the present invention, a gaming device which determines payouts according to an alternate, or reverse, payout table.
In a first embodiment of the present invention, a gaming device is disclosed. The gaming device randomly generates one of many possible outcomes for each play. The gaming device includes a wager selector indicating a wager, a memory device and a payout selector. The memory device stores a normal set of data correlating possible outcomes to a normal set of payout information and a reverse set of data correlating possible outcomes to a reverse set of payout information. The reverse set of payout information describes payouts consisting of amounts which are less than or equal to twice said wager. The payout selector indicates which set of data, the normal or reverse set of data, the gaming device is to access.
In a second embodiment of the present invention, a gaming device is disclosed. Like the first embodiment, the gaming device randomly generates one of many possible outcomes for each play and includes a wager selector indicating a wager, a memory device and a payout selector. The memory device stores a normal set of data correlating possible outcomes to a normal set of payout information and a reverse set of data correlating possible outcomes to a reverse set of payout information. The reverse set of data includes two subsets: a first subset of outcomes which correspond to payout information describing positive payout amounts in both the normal and reverse sets of data and a second subset of outcomes which correspond to payout information describing payouts consisting of amounts which are less than or equal to twice the wager. The payout selector indicates which set of data, the normal or reverse set of data, the gaming device is to access.
In a third embodiment of the present invention, a gaming device is disclosed. The gaming device randomly generates one of many possible outcomes for each play and includes a wager selector indicating a wager, a memory device and a payout selector. The memory device stores a normal set of data correlating possible outcomes to a normal set of payout information and a reverse set of data correlating possible outcomes to a reverse set of payout information. The reverse set of data describes winning outcomes and losing outcomes wherein the ratio of winning outcomes to losing outcomes is greater than one.
In a fourth embodiment of the present invention, a method is disclosed for operating a gaming device. The method includes the steps of identifying a wager, storing a normal set of data correlating possible outcomes to a normal set of payout information, and storing a reverse set of data correlating possible outcomes to a reverse set of payout information. The reverse set of payout information describes payouts consisting of amounts which are less than or equal to twice the wager. The method also includes the step of identifying a data set selection indicating which set of data, the normal or reverse set of data, the gaming device is to access. The method further includes the steps of generating a random resultant outcome and determining a resultant payout based on the wager, the data set selection and the resultant outcome.
Thus, the present invention provides players of gaming devices the ability to select an alternate payout table based on their feeling about the future outcomes to be generated by a gaming device. Moreover, operators of the subject gaming devices can retain players for a longer period of time by providing gaming devices employing such alternate payout tables.
Further aspects of the present invention will become apparent during the course of the following detailed description and by reference to the attached drawings.
The present invention is directed generally to a gaming device such as a slot machine, and to a method and system for playing such a gaming device.
Certain preferred embodiments of the present invention will now be described in greater detail with reference to the drawings. Although the embodiments discussed herein are directed to slot machines, it is to be understood that the present invention is equally applicable to other gaming devices, such as video poker machines, video blackjack machines, video roulette machines, video keno machines, video bingo machines, and the like.
With reference to
The slot machine 100 operates in both a normal payout mode and a reverse payout mode. With respect to the normal payout mode of the slot machine 100, the slot machine 100 operates in a conventional manner. The player starts the machine by inserting a coin into a coin acceptor 148 connected to the CPU 110, or using electronic credit, and activating a starting controller 122. If the player has deposited more than one coin in slot machine 100 or has accumulated credits stored in slot machine 100 then he can choose the desired wager per play by pressing wager selector 143. Under control of a program stored, for example, in a data storage device 124 or the ROM 116, the CPU 110 initiates the RNG 120 to generate a random number; the CPU 110 then looks up the generated random number in a stored probability table 126 and finds the corresponding outcome. The random number may be generated through digital means, or through physical processes. Although described as random herein, the number generated may be more properly understood as pseudo-random.
In the present embodiment, each of the three reels 132, 134, 136 has twenty-two total symbols or “stops” located thereon. Therefore, given the three reels 132, 134, 136 there exists 10,648 (22×22×22=10,648) possible reel combinations or outcomes. A reel combination of ôCHERRY-BELL-PLUMö therefore represents an outcome. Alternatively, a separate random number may be generated for each reel position. These 10,648 plays are often referred to as the slot machine's “cycle.” RNG 120 produces random numbers which are mapped onto these 10,648 possible outcomes, each of which has a corresponding outcome stored in probability table 126. While each of these 10,648 possible outcomes may have an equal probability of selection, the present invention may also employ non-uniform probabilities known in the art.
Based on the corresponding outcome, the CPU 110 locates the appropriate number of coins awarded in normal payout table 128. The CPU 110 also directs a reel controller 130 to spin reels 132, 134, 136 and to stop them at a point where they display an outcome which corresponds to the randomly generated number. When the player wins, the machine stores the credits in the RAM 118 and displays them in the video display area 138. The possible outcomes of slot machine 100 may be divided into subsets, with each subset representing a different ôclassö of outcome. Many slot machines, for example, are described as having three subsets or ranges of outcomes such as high-end payouts, mid-level payouts, and low-end payouts. Non-winning payouts may form a fourth subset. High-end payouts incorporate the top payouts of the machine, such as the top three jackpots. Another way to define the subset of high-end payouts is to include all payouts exceeding a fixed multiplier of the amount wagered, such as all payouts which return at least ten times the number of coins wagered. Low-end payouts typically comprise payouts of only a few coins, such as the payout for a single cherry on either the first or third reels. Those of ordinary skill in the art will appreciate that there could be any number of subsets defined for a given machine.
A hopper controller 140 is connected to a hopper 142 for dispensing coins. When the player requests to cash out by pushing a button (not shown) on the slot machine 100, the CPU 110 checks the RAM 118 to see if the player has any credit and, if so, signals the hopper controller 140 to release an appropriate number of coins into a payout tray (not shown).
Also connected to the CPU 110 is a slot network server interface 150. The slot network server interface 150 provides a communication path from the slot machine 100 to a slot network and, subsequently, to a slot network server. Thus, outcome data can be exchanged between the slot machine 100 and a slot network server. As discussed below with regard to an alternate embodiment, the slot machine 100 includes a player tracking card reader device 160. The player tracking card reader device 160, which is connected to the CPU 110, includes a display area 162, a keypad 164, and a card reader 166. As discussed below, both the keypad 164 and the card reader 166 are input devices that allow a player to communicate with the slot machine 100 and by extension, the slot network server.
In alternate embodiments, the slot machine 100 does not include the reel controller 130 and reels 132, 134136. Instead, a video display area 138 graphically displays representations of objects contained in the selected game, such as graphical reels or playing cards. These representations are preferably animated to display the playing activity of the selected game.
It should be noted that this invention does not require a physical slot machine, and could instead be embodied completely in software. Such an embodiment would allow play as stand alone software running on conventional personal computers. Examples of slot machine software include Interbet software and www.interbet.com.
As noted above, the slot machine 100 selectively operates in a reverse payout mode. The reverse payout mode is initiated when a player selects reverse play on a payout selector 144 connected to the CPU 110. As will be appreciated by one skilled in the art, possible payout selectors 144 include a button, a toggle switch, a software flag and the like. When reverse payout mode is selected, the slot machine 100 operates generally as described above, with the exception that the CPU 110 locates the appropriate payout in a stored reverse payout table 146 rather than the normal payout table 128. The payout tables represent sets of data which correlate outcomes with payouts. As described in detail below with reference to
The normal payout tables 128 will now be described with reference to
It is to be understood that the table of
The normal payout table 128b of the present embodiment will now be described with reference to
As shown, the normal payout table 128b of the present embodiment can be logically represented by five fields of related information. The data represents payout information for a one coin wagered per play model. A pay combination field 210 identifies possible pay combinations to which each outcome can be correlated. These pay combinations include, for example, “ANY/ANY/CHERRY” and “BAR/BAR/BAR”, for which a positive number of coins are awarded, as indicated in the “Number of Coins Awarded” field 212. The pay combination field 210 also includes an “Other” entry for all other combinations, representing normally non-winning outcomes for which no payment is to be made to a player. These normally non-winning outcomes, such as “PLUM-BELL-ORANGE,” result in no coins awarded, as indicated in the Number of Coins Awarded field 212.
Also shown in
The normal payout table 128b also includes a “Player win/loss” field 216. While the number of coins awarded field 212 equals the total payout, if any, made to a player, the Player win/loss field 216 represents the net change in the player's funds for each pay combination. A negative number indicates a loss by the player while a positive number indicates a win.
Further, the normal payout table 128b includes an “Expected Hits×Player win/loss” field 218. As implied by the name, this field represents the number of Expected hits 214 multiplied by the amount in the Player win/loss field 216 for each outcome which falls within the given pay combination. Therefore, the Expected hits×Player win/loss field 218 represents, for each pay combination, the statistically expected total amount won or lost by a player in a cycle. For example, because normally non-winning outcomes are expected 8,570 times in each cycle, and because on each play a player will lose one coin (the amount wagered) players will theoretically lose a total of 8,570 coins in every 10,648 plays for this particular pay combination in one cycle of plays on slot machine 100.
As indicated by the information in payout tables 128a-128c, the Expected hits 214 for all pay combinations totals 10,648. As further indicated by payout tables 128a-128c, the total amount won or lost for all pay combinations is negative 586, representing 586 coins lost by the player(s) and won by the house. Thus, in a one coin wagered model, in 10,648 plays, 10,648 coins are wagered, with the house retaining 586 coins. In other words, the house pays 10,062 coins back to players, or about 94.5% of the 10,648 coins wagered per each cycle, hence the 94.5% payback rate.
It is to be understood that the normal payout tables 128b and 128c depicted in
It is also to be understood that the normal payout tables 128b and 128c may correlate the Number of coins awarded 214,224 and the Player win/loss 216,226 amounts to pay combinations for plays where other than one coin is wagered. Thus, the normal payout tables 128b and 128c are merely exemplary of possible normal payout tables. In this regard, an alternate embodiment utilizes multiple payout tables, each containing payout information for a different amount wagered. It is to be understood that in multiple coin models, there are outcomes that may provide a payout to the player but result in a loss. For example, when three coins are wagered, a payout combination may call for a payout of two coins, resulting in a loss of one coin for the player. In another embodiment, a single payout table contains the payout information for each of the different amounts wagered.
It is further to be understood that the normal payout tables 128a-c need not include a pay combinations field at all. Rather, in an alternate embodiment, the normal payout tables 128a-c directly correlate outcomes to payout information, such as the Number of coins awarded or the Player win/loss amounts.
Other normal payout tables that are within the scope of the present invention include those having different payout amounts, different reel symbols, and different pay combinations. In general, however, typical normal payout tables can be characterized in that a player wins on the occurrence of the relatively few outcomes that are the least likely to occur, and the amount of the win increases as the likelihood of the particular outcome occurring decreases.
The reverse payout tables 146a-146d of the present embodiment will now be described with reference to
In general, the reverse payout tables 146a-146d can be characterized as having payouts which occur for the relatively numerous outcomes that are the most likely to occur, while a loss occurs for the relatively few outcomes that are the least likely to occur. Thus, for the majority of outcomes, where the normal payout tables 128b and 128c provide for a zero payout or a loss, the reverse payout tables 146a-146d provide for a positive payout, or a win. Likewise, a positive payout or win in the normal payout tables 128 correspond to a loss in the reverse payout tables 146a-146d.
The reverse payout table 146a of the present embodiment is exactly the reverse of the normal payout table 128b in that each player win/loss result is reversed. Thus, because the normal payout table 128b favors the casino by about 5.5%, the reverse payout table 146a, which is exactly the opposite of the normal payout table 128c, favors the player by about 5.5%. In other words, the reverse payout table 146a is a 105.5% payback table.
Like the normal payout tables 128a-c, the reverse payout tables 146a-d include a pay combination field 310 containing the same normally winning and normally non-winning pay combinations found in the normal payout tables 128. As used herein, the term “normally winning” means winning as determined by the normal payout tables 128. Similarly, “normally non-winning” and “normally losing” means non-winning as determined by the normal payout tables 128b and 128c (i.e pay combination ôOtherö).
As with the normal payout tables 128a-128c, the Player win/loss fields 316,326,336,346 and the “Expected Hits x Player win/loss” fields 318,328,338,348 contain the theoretical amounts won or lost per play and per cycle, respectively. However, for normally winning pay combinations, the reverse payout tables 146a-146d indicate a loss to the player, and for normally losing pay combinations, the reverse payout tables 146a-146d indicate a win for the player. In other words, the player win/loss amounts 316,326,336,346 of the reverse payout tables 146a-146d may be arrived at by multiplying each Player win/loss amount 216 of the normal payout table 128b by negative one (“−1”). Because the expected hits 314,324,334,344 are identical to those of the normal payout tables 128b and 128c, the “Expected Hits×Player win/loss” amounts 318 are the reverse of those in the normal payout tables 128b and 128c. Thus, while the normal payout table 128b results in the player losing 586 of the 10,648 coins wagered, the reverse payout table 146a results in the player winning 586 coins. Thus, the slot machine 100 of the present embodiment described in
Because in the reverse payout table 146a depicted in
Because the player faces large potential losses with reverse payout tables 146a and 146b, slot machine 100 could incorporate an insurance protocol in which the player deposits one coin and presses insurance selector 145 before each spin. In the event of a jackpot, the insurance policy covers the amount of the loss. Multiple insurance policies are possible, with the cost of the insurance rising with the amount of coverage increasing. The amount of coverage may be calculated with reference to the Expected hits×Player win/loss 318,328 in order to capture both the frequency and magnitude of the covered payouts.
In practice, a reverse payout table that favors players, such as reverse payout tables 146a or 146b in
Focusing on the “Other,” or normally losing pay combination, it is apparent that such a pay combination will theoretically hit 8,570 times in one cycle, each time causing the player to win one coin, as depicted in the Player win/loss field 336, and awarding six coins, as depicted in the number of coins awarded field 332. Six coins are awarded because the player receives the five coins that were wagered plus the one coin won.
Also shown in the Player win/loss field 336, the amount lost for each of the normally winning pay combinations is five coins. Because the player can only lose what is wagered and no more, namely five coins, there is no need to place additional funds at risk. Furthermore, given the five coin loss for each normally winning pay combination and the one coin win for each normally losing pay combination, the reverse payout table 146c theoretically results in the house winning 1,820 coins of the 53,240 coins wagered per cycle ({10,648 plays}×{5 coins/play}=53,240 coins). In other words, the reverse payout table 146c is approximately a 96.5% payback table.
The reverse payout table 146d shown io
During normal payout mode, the slot machine 100 provides a normal payout display 400, as shown in
During reverse payout mode, the slot machine 100 provides a reverse payout display 401, as shown in
The operation of the present embodiment will now be described with reference to
While playing the slot machine 100 in normal payout mode, the player may accumulate credits on the slot machine 100 by hitting one or more jackpots. Having hit a jackpot and accumulated credits, shown in step 504, a player may decide that his or her “luck has run out” or the machine has 8gone cold.ö Rather than terminating play, the player may elect to switch to a reverse payout mode in an attempt to exploit his or the machines perceived bad luck. Thus, in step 506, the player selects reverse payout mode on the payout selector 144 of the slot machine 100. The CPU 110 receives a signal from the payout selector 144 in step 508 and accesses the reverse payout table 146c. Payout selector 144 could also select from among a set of possible reverse payout tables 146a-d, allowing the player a choice of different payout structures. Payout selector 144 may also be triggered automatically by slot machine 100. For example, after winning two jackpots with normal payout table 128b, the game may automatically switch to reverse payout table 146c, or at least indicate to the player that the option is available. Having accessed the reverse payout table 146c, the CPU 110 causes a reverse payout display 401 to be displayed on the video display area 138 in step 510. Alternatively, the information of reverse payout table 146c could be displayed on the belly glass of the slot machine along with the normal payout information as is customary for slot machines.
As further described in
As shown in step 516, the results from random number generator 120 and the probability table 126 may initiate CPU 110 to display a normally winning outcome, such as “CHERRY-CHERRY-CHERRY” on the reels 132, 134, 136. If such a normally winning outcome occurs, then, in step 518, the slot machine 100 decrements the player's stored credits based on the reverse payout table 146c. Decrementing the player's stored credits involves the CPU 110 accessing the reverse payout table 146c. CPU 110 proceeds to correlate the outcome, “CHERRY-CHERRY-CHERRY”, to the “CHERRY/CHERRY/CHERRY” pay combination in the pay combination field 330, and to the corresponding loss of five coins in the Player win/loss field 336. Thus, in step 518, the CPU 110 adjusts the stored credits accordingly.
Another possibility, based upon the random number generator 120 and the probability table 126, is that a normally losing outcome, such as “PLUM-BELL-ORANGE” may appear on the reels 132, 134, 136. The occurrence of a normally non-winning outcome is shown as step 520. If such a normally non-winning outcome occurs then in step 522, the slot machine 100 increments the players credits based on the payout information in the reverse payout table 146c. Specifically, the CPU 110 accesses the reverse payout table 146c to identify the Player win/loss amount 336 corresponding to the particular outcome and pay combination. The CPU 110 proceeds to adjust the stored credits accordingly, in this example adding six coins to the players credit balance.
Regardless of whether a normally winning or normally losing outcome occurs, in step 524 the player decides whether or not to continue playing in the reverse payout mode. If the player decides to continue playing in a reverse payout mode, then the operation continues from step 512. On the other hand, a player may decide not to continue playing in the reverse payout mode. For example, a player may perceive his or her luck is improving or that the slot machine 100 is “due to hit” or ôgetting hot.ö Thus, in step 526, rather than leaving the machine, the player uses the payout selector 144 to select normal payout mode.
In an alternate embodiment, the slot machine 100 includes only the reverse payout table 146c and not the normal payout table 128b. With such a slot machine 100, the normally winning outcomes, although not identified in any normal payout table, are typically pre-determined and identified to the player in the form of a display. As in the previously described embodiment, the embodiment having only a reverse payout table will prevent a player from stopping play or leaving the casino based on perceived bad luck. In such an embodiment, the slot machine operates as described above with reference to steps 512-524 of
An alternate embodiment will now be described with reference to
More specifically, such an embodiment includes multiple slot machines 100 in communication with a slot network server 600 via a conventional local area network (slot network) 602. The slot network 602 is controlled by the slot network server 600. It is to be understood that communication between each slot machine 100 and the slot network server 600 may also occur across a wireless network or Internet connection. A cashier terminal 612 is also coupled to the slot network server 600.
As will be discussed in greater detail below, each slot machine 100 communicates outcome data to the slot network server 600. As used herein, outcome data includes all game activity-related information, which is being passed from a slot machine 100 to the slot network server 600. In the present embodiment, such outcome data includes the Number of coins wagered, the Player win/loss amount, and the position of the reels 132, 134, 136 on the slot machine 100. Thus, outcome data includes any given outcome and the payout information for that outcome. As discussed below, in an alternate embodiment, such outcome data also includes an indication of which payout mode, either normal or reverse, the slot machine 100 is operating in. It will be understood that the position of the reels 132, 134, 136 and the payout information are essentially alternate representations of the same data.
Because each slot machine 100 has a unique machine identification (ID) number, the slot network server 600 is able to distinguish the outcome data as being sent from a particular slot machine 100 and to store the outcome data with reference to that particular machine 100.
To facilitate the communication between a player, the slot machine 100 and the slot network server 602, a casino typically issues a player tracking card containing player identifying information. Such identifying information can be any information that uniquely identifies a player to the system and, in the present embodiment, includes the player identification (ID) number. The identifying information is preferably stored on a magnetic strip on the player tracking card.
The player tracking card reader 166 reads the player identifying information from the player tracking card and communicates the information to the CPU 110, which in turn communicates the identifying information to the slot network server 600. Because the player identifying information uniquely identifies a given player, the slot network server 600 is able to access information associated with that player, such as a credit balance.
With reference to
In order to communicate with the cashier terminal 606, the slot network server 600 also includes a communication port 750. The communication port 750 is coupled to the CPU 710, as well as to the slot machine network 602 and the cashier terminal 606. Thus, the CPU 710 can control the communication port 750 to receive and transmit information from each slot machine 100, and the cashier terminal 606.
Additionally, the CPU 710 is coupled to a data storage device 740, having a transaction processor 742, a casino player database 744, a session database 746, a terminal database 748, and a slot machine database 749. In general, the transaction processor 742 manages the contents of the data storage device 740, and may comprise a dedicated processor, or a portion of the function of processor 710.
In general, the casino player database 744 of the present embodiment, as shown in
It is to be understood that for purposes of the present embodiment, only the player ID number field 7442, and the credit balance field 7446 are necessary. The remaining fields are merely representative of additional information that may be stored and used for other purposes in the present embodiment. For example, credit card number 7445 is used for billing purposes and address 7443 is used to mail casino promotions to players to incent them to return to the casino.
The slot machine database 749 relates to information concerning particular slot machines 100. As illustrated in
Having thus described the components of the present embodiment, the operation of the system 604 will now be described in greater detail with reference to
The process of adding funds to the player's credit balance 7446 will now be described with reference to
In step 1030 the cashier terminal 606 transmits the player ID and the amount of funds deposited to the slot network server 600. Once the server 600 receives the player ID and the amount of funds deposited, the server CPU 710 causes the transaction processor 742 to access the casino player database 744. More specifically, the transaction processor 742 searches the casino player database 744 for the record containing the received player ID in the player ID field 7442. Having thus located the appropriate record, in step 1040, the transaction processor 742 increments the credit balance field 7446 by the amount of funds deposited. Once the player database 744 has been updated, the player takes the player tracking card back from the casino employee in step 1050 and proceeds to the slot machine 100.
The player does not have to use cashier terminal 606 to add money to credit balance 7446. Instead the player may provide money or account data directly into slot machine 100, which in turn transmits the credit data to slot server 600. In such embodiments, the slot machine 100 could be equipped with either a smart card or credit card reader. The player is making these funds available such that any losses sustained while playing the reverse mode on the slot machine 100 will be covered by those funds prior to the actual loss. Initiation of play will now be described with reference to
Having thus established a credit balance 7446, the player may initiate play of a slot machine 100. The CPU 110 transmits a signal to the slot network server 100 indicating funds have been received.
As shown as step 1110, the slot machine player first inserts the player tracking card into the card reader 166. The card reader 166 then proceeds to read the player identifying information from the tracking card. The player identifying information, namely the player ID, is communicated from the slot machine 100 to the slot server 600. Upon receiving the player identifying information, the slot server 600 authenticates the information. This step, depicted as step 1112, includes the slot network server 600 searching the casino player database 744 for a record containing the received player ID in field 7442. The server 600 also stores the player ID number in the field 7492 of the record in the slot machine database 749. Once the slot network server 600 authenticates the player identifying information, the server 600 may transmit a signal to the slot machine 100 acknowledging such authentication.
In step 1114, displayed on either display 162 or video display area 138, the player selects either normal payout mode or reverse payout mode on the payout selector 144. This selection may be prompted by a message from slot machine 100. The slot machine 100 also prompts the player to enter the amount to be wagered on the upcoming play. Specifically, as shown in step 1116, the player enters the number of coins to be wagered into the keypad 164, or, in an alternate embodiment, a touch screen of the video display area 138 or use of buttons. The slot machine 100 registers the amount to be wagered by the player and stores the value in the RAM 118.
Having selected the payout mode and entered the amount to be wagered, the player presses the starting controller 122 or pulls the handle to begin play in step 1118. As discussed above, the slot machine 100 generates an outcome based upon a number randomly generated by random number generator 120, the random number corresponding to a reel combination in probability table 126. Once the slot machine 100 generates an outcome, which is shown as step 1120, it determines the appropriate player win/loss amount. Specifically, in step 1122, the CPU 110 accesses either the normal payout table 128c or an appropriate reverse payout table such as 146a or 146d, and correlates the outcome to the player win/loss amount as stored in fields 226, 326, 346 respectively, depending on the mode of play and the appropriate reverse payout table. It should be noted that instead of accessing the Player win/loss field, slot machine 100 could access the Number of coins awarded field in the appropriate payout table to determine the payout to the player.
The slot machine 100 transmits the number of coins awarded information and player ID number to the slot network server 600 in step 1124. Having received the Player win/loss amount and the player ID number, the slot network server 600 proceeds to update the player's stored credit balance.
Updating the player's credit balance, shown as step 1126, involves the CPU 710 directing the transaction processor 742 to access the casino player database 744 in order to locate the record containing the received player ID number in field 7442. The transaction processor 742 then adjusts the value stored in credit balance field 7446 by the received Player win/loss amount.
Once the slot network server 600 has adjusted the player's credit balance accordingly, operation of the system 604 may repeat from step 1114 until either the server 600 determines the player has insufficient funds stored in the credit balance 7446 to play or the player decides to stop playing and removes the tracking card from the card reader 166.
If the player stops playing and desires to cash out, the player merely goes to the casino cage or slot booth and presents his tracking card. As with the depositing of funds, described above, the server 600 accesses the player's record and adjusts the credit balance field 7446. Rather than incrementing the credit balance 7446, however, the slot network server 600 decrements the stored value by the amount dispersed by the casino employee to the player.
An alternate embodiment employing the system 604 will now be described with reference to
Initially, in step 1200, the slot machine 100 transmits an indication of the payout mode selected by the player to the slot network server 600. The slot network server 600 stores this indication in the payout mode field 7498 of that particular slot machine's record in the slot machine database 749. As with the previously described embodiments, the slot machine 100 then generates a random number and a corresponding outcome, namely reel positions in the present embodiment, in step 1210. In step 1212, the slot machine 100, having generated an outcome, transmits the outcome to the slot server 600. Along with the outcome, the slot machine 100 transmits the amount wagered and the machine ID number so that the slot server 600 can identify from which machine the outcome originated.
Once the slot network server 600 receives the outcome and amount wagered, it updates the slot machine database 749 in step 1214. More specifically, the slot network server 600 accesses the slot machine database 749 and updates the record pertaining to the particular slot machine 100, as identified by its machine ID number 7491, with the amount wagered 7497.
After updating the slot machine database 749, the slot server 600, proceeds to update the credit balance field 7446 in the player's record having the same player ID number in field 7442 as found in the player ID number field 7492 of the slot machine database 749. The credit balance field 7446 is adjusted by the player win/loss amount from the appropriate payout table.
Specifically, the server 600 determines the payout by retrieving the address stored in either the payout mode field 7498 or the payout table indicator field 7499. The CPU 710 then accesses the payout table stored at the retrieved address in RAM 730 or Data Storage Device 740 and, based upon the stored outcome 7493 and amount wagered 7497, retrieves the corresponding payout. Accessing the payout table is shown as step 1216. The CPU 710 then in step 1218 causes the transaction processor 742 to adjust the credit balance field 7446 by the amount of Player win/loss 7494.
Once the server 600 determines the player win/loss and adjusts the player's credit balance 7446, the server 600 transmits the player win/loss amount and the new credit balance 7446 to the slot machine 100 for display to the player in step 1220.
It is to be understood that reverse payout tables other than those shown in
Alternatively, the present invention can also substitute the use of algorithms for reverse payout tables 146a-d. One such algorithm is applied to the Player win/loss fields 216,226,236 of normal payout tables 128a-c, and may be stored in data storage device 124 or ROM 116 of slot machine 100. The algorithm takes the normal Player win/loss 216,226,236 as an input and returns the corresponding reverse Player win/loss 316,326,336,346. The algorithm looks like the following:
Another algorithm takes the Number of coins awarded 212,222,232 of one of the normal payout tables 128a-c as an input and returns the Player win/loss 316,326,336,346 of one of the reverse payout tables 146a-d.
The above described payout results may also be produced by altering the probability of each pay combination as depicted in any of the normal payout tables 128a-c. In this manner, pay combinations with high or medium payouts have their probability of hitting lowered, while pay combinations of low end payouts have their probability increased.
Another way to shift the odds in favor of the house is to alter the probabilities of the outcomes. Specifically, the probability table 126 is adjusted so that normally winning outcomes, which result in a loss to the player, are more likely while normally non-winning outcomes, which result in a payout to the player, are less likely while in reverse payout mode.
It is to be understood that the normal payout tables 128a-c and the reverse payout tables 146a-d may include some of the same Player win/loss amounts. For example, in an alternate embodiment using the reverse payout tables of
It is also to be understood that embodiments in which players make nonmonetary wagers are also within the scope of the present invention. Thus, in one embodiment, a player wagers complimentary points, as stored in the “COMP.INFO” field 7447 of the casino player database 744. Such an embodiment operates similar to the system 604 described above with the exception that the payouts relate to complimentary points, not coins, and the “COMP.INFO” field 7447, not the credit balance field 7446, is adjusted based upon the payouts. Upon a player cashing out, the casino could convert the accumulated complimentary points into any kind of award, including free hotel rooms, dinners, tickets to shows, free plays on a gaming device, money, and the like.
In an embodiment in which the gaming device is a video poker machine, card values represent the outcome display instead of reel symbols. In this game, the player receives five cards and then has the option to draw five new cards. The resulting completed hand is paid according to a payout schedule that typically rewards rare hands such as a royal or straight flush with a large coin award. Hands like a full house or flush receive medium payouts while a small pair or no pair hand generally earns the player no payout at all. In a reverse payout table, players are rewarded for low value hands. Much like lowball poker, the player is rewarded for having the worst hands.
Although the present invention has been described in terms of certain preferred embodiments, other embodiments that are apparent to those of ordinary skill in the art are also intended to be within the scope of the present invention. Accordingly, the scope of the present invention is intended to be limited only by the claims appended hereto.
More than one reissue application has been filed for U.S. Pat. No. 6,113,492. The present application is a continuation of Reissue application Ser. No. 10/222,523, filed Aug. 16, 2002, now U.S. Reissue Pat. No. RE39,817, which is hereby incorporated by reference in its entirety. U.S. Reissue application Ser. No. 10/222,523, filed Aug. 16, 2002, now U.S. Reissue Pat. No. RE39,817, is a Reissue of Ser. No. 08/885,345, filed on Jun. 30, 1997, now U.S. Pat. No. 6,113,492.
| Number | Name | Date | Kind |
|---|---|---|---|
| 3810627 | Levy | May 1974 | A |
| 4339798 | Hedges | Jul 1982 | A |
| 4669731 | Clarke | Jun 1987 | A |
| 4856787 | Itkis | Aug 1989 | A |
| 4991848 | Greenwood et al. | Feb 1991 | A |
| 5178390 | Okada | Jan 1993 | A |
| 5429361 | Raven et al. | Jul 1995 | A |
| 5570885 | Ornstein | Nov 1996 | A |
| 5655961 | Acres et al. | Aug 1997 | A |
| 5669606 | Brown | Sep 1997 | A |
| 5770533 | Franchi | Jun 1998 | A |
| 6110041 | Walker et al. | Aug 2000 | A |
| 6293866 | Walker et al. | Sep 2001 | B1 |
| Number | Date | Country |
|---|---|---|
| WO9600950 | Jan 1996 | WO |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 10222523 | Aug 2002 | US |
| Child | 08885345 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 08885345 | Jun 1997 | US |
| Child | 11542040 | US |
