U.S. patent number 3,653,026 [Application Number 05/042,964] was granted by the patent office on 1972-03-28 for random selection system for bingo and the like.
Invention is credited to Frederick A. Hurley.
United States Patent |
3,653,026 |
Hurley |
March 28, 1972 |
RANDOM SELECTION SYSTEM FOR BINGO AND THE LIKE
Abstract
A random selection system including a repeating selector
operating for a randomly varied period of time following each
successive actuation. The random period of time is achieved through
a capacitor timing circuit by means of a variable charging time,
and changes in capacitance and other circuit parameters. A memory
circuit keeps track of the selected numbers and is coupled to the
selector control circuits to prevent a repeat selection of any
number.
Inventors: |
Hurley; Frederick A. (Opa
Locka, FL) |
Family
ID: |
21924705 |
Appl.
No.: |
05/042,964 |
Filed: |
June 3, 1970 |
Current U.S.
Class: |
340/323R;
273/139; 273/237; 345/34; 273/138.2; 273/269 |
Current CPC
Class: |
G07C
15/006 (20130101) |
Current International
Class: |
G07C
15/00 (20060101); G08b 005/36 () |
Field of
Search: |
;340/324,323,336
;273/138A,139 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Trafton; David L.
Claims
What is claimed is:
1. A random selection system comprising
a selector which, while energized, repeatedly advances through the
numbers to be selected following a predetermined repeatable
sequence;
player actuatable means;
a timing circuit connected to said selector to randomly vary the
period of energization for said selector with each successive
player actuation
including a capacitor and a charging circuit for controlling the
charging rate so that said capacitor is charged to a state
dependent upon the length of time of the player actuation, and
circuit means coupling said capacitor to said selector so that said
selector is energized while said capacitor discharges; and
means coupled to said selector for displaying the selections.
2. A random selection system according to claim 1 further including
a second capacitor coupled to said player actuatable means to
become rapidly fully charged upon each player actuation, said
second capacitor being coupled to said selector to provide a period
of energization while said second capacitor discharges.
3. A random selection system for selecting Bingo numbers
comprising
a display disposed for view by the players for displaying selected
Bingo numbers,
a selector coupled to said display to make the successive selection
of Bingo numbers, said selector being of the type which, while
energized, advances repeatedly through a predetermined sequence of
Bingo numbers;
a player actuator;
a timing circuit connected for controlling energization of said
selector for randomly variable periods of time in response to
successive actuations of said player actuator, said timing circuit
including
a first capacitor connected to become fully charged during each
player actuation,
a second capacitor so connected in a charging circuit that said
second capacitor attains a state of charge which varies in
accordance with the duration of the player actuation, and
circuit means for coupling said capacitors to said selector to
energize said selector during the discharge of said first and
second capacitors following each player actuation.
4. A random selection system according to claim 3 further including
a variable capacitor means in said timing circuit connected to
attain a state of charge which varies in accordance with the
duration of the player actuation and which contributes to the
energization of said selector following each player actuation, and
circuit means for varying the capacitance of said variable
capacitor means prior to each successive player actuation.
5. A random selection system for selecting and displaying Bingo
numbers comprising
a selector which, while energized, repeatedly advances through the
numbers to be selected following a predetermined repeatable
sequence;
player actuatable means;
a timing circuit connected to said selector to randomly vary the
period of energization for said selector with each successive
player actuation; and
a display disposed for view by the players including
a momentary displaY the number corresponding to the instantaneous
position of said selector, and
a memory display for displaying, until the end of each game,
numbers selected by said selector following each successive
energization thereof.
6. A system according to claim 5 wherein said memory display
includes a compartmented structure, each compartment thereof
including a separate light bulb so that energization of a selected
light bulb provides display of a selected number.
7. A system according to claim 5 wherein said momentary display is
a two digit display wherein different numbers can be displayed for
each digit by selective energization of number segments.
8. A random selection system for selecting and displaying Bingo
numbers without repeating number selections during a game,
comprising
a selector which, while energized, repeatedly advances through the
numbers to be selected following a predetermined repeatable
sequence;
player actuatable means;
a timing circuit connected to said selector to randomly vary the
period of energization for said selector with each successive
player actuation
a display disposed for view by the players for displaying numbers
as they are selected,
memory circuit means associated with each selectable number, each
such memory circuit being
coupled to said selector to become energized upon selection of the
associated number and to thereafter remain energized for the
duration of the game, and
coupled to said display to maintain display of the selected number
for the remaining duration of the game; and
circuit means for avoiding repeat selections coupled between said
memory circuits and said selector to energize said selector
whenever in a position corresponding to a previously selected
number.
9. A random selection circuit according to claim 8 wherein each of
said memory circuits includes a relay with a hold circuit completed
through a set of normally open contacts to maintain the relay in
the energized state for the duration of the game subsequent to
initial energization and wherein said selector is a stepping switch
connected so that the same movable contact of said stepping switch
is used to energize a hold circuit in response to a selected number
and to sense energized hold circuits to avoid repeat selections of
any number.
Description
BACKGROUND OF THE INVENTION
This invention relates to apparatus for randomly selecting and
displaying numbers in connection with a game of chance. Although
not limited thereto, the invention will be described principally in
connection with Bingo.
Bingo is played using 75 numbers grouped with the letters B-I-N-G-O
such that the numbers 1 through 15 are associated with the letter
B, 16 through 30 are associated with the letter I, etc. Each of the
players is given a card having 24 numbers arranged in a 5 .times. 5
matrix with a center "free" square. The numbers are in columns
under the letters B-I-N-G-O. As the successive numbers are
selected, the individual players mark the selected numbers on their
card. The first player to complete a row, either horizontal,
vertical or diagonal, is the winner.
Various techniques have been used for the random selection of the
numbers. A rotating wheel with the 75 numbers indicated thereon can
be used to select numbers according to the position at which the
wheel comes to rest. With this approach the entire selection
process is visible to the players but the rotating wheel approach
is nevertheless undesirable because it repeats previously selected
numbers.
The more customary technique is to use a number drawing approach.
The 75 numbers are placed in a bowl and withdrawn one at a time, or
in more sophisticated systems the numbers are withdrawn
automatically by means of pneumatic apparatus. Although this
approach precludes the possibility of repeating numbers, there are
other disadvantages. The players cannot be sure that all the
numbers were initially placed in the bowl and there is always the
possibility of miscalled numbers. As a result of these
disadvantages the players have less than full confidence in the
number selection system.
An object of this invention is to provide a truly random selection
system in which players will have full confidence.
Another object is to provide an electric random number selection
system which does not repeat previously selected numbers.
Another object is to provide apparatus which will automatically
display the selected numbers so that numbers cannot be
miscalled.
BRIEF DESCRIPTION OF THE INVENTION
The system according to the invention repetitively progresses
through a sequence including all 75 numbers of the game. The
selection can be accomplished electrically, for example, by a motor
driven rotary switch, a stepping switch, a ring counter, or a
binary counter diode matrix combination. Upon each successive
activation by the operator the selector is energized for a period
of time which varies in a random fashion from one play to the next.
The number of steps which the selector advances varies on each play
and cannot be controlled by the operator and, therefore, the
selection of numbers is completely random, the same as it would be
with rotating wheel number selectors.
The variable time interval controlling activation of the selector
is determined by a capacitor discharge and therefore is a function
of the charge across the capacitor as well as the value of
capacitance. The capacitor charging time is different during each
successive activation by the operator and therefore the initial
charge on the capacitors will be different for each successive
number selection. The capacitance in the circuit is changed
subsequent to each activation to add an additional variable. The
variation in circuit parameters from one activation to the next
further adds to the randomness of the time interval variation.
Since the time interval during which the selector operates is
different for each successive activation by the operator and varies
randomly, the ultimate selection of numbers is likewise random.
The display visible to the players consists of a momentary display
which always displays the number corresponding to the then existing
position of the selector and a memory display which registers the
numbers as they are selected during the game. When the operator
first activates the system a series of numbers will be flashed in
succession on the momentary display during the selection process.
When the selector comes to rest the number appearing on the
momentary display is the selected number and the same number will
be permanently displayed on the memory display.
The system is designed to avoid a repeated selection of any number.
A memory circuit is included which keeps track of previously
selected numbers. If the selector would normally come to rest on a
previously selected number, it is activated to continue advancing a
step at a time until it reaches the first number which has not
previously been selected.
BRIEF DESCRIPTION OF THE DRAWINGS
An illustrative embodiment of the invention is described in detail
in the following specification which includes the drawings and
wherein:
FIG. 1 is a perspective view showing the momentary and memory
displays as seen by the players;
FIG. 2 is a block diagram showing the interrelationship of the
various circuits in the system;
FIG. 3 is a schematic diagram of the control, selector, and memory
circuits of the system;
FIG. 4 is a schematic diagram of the alpha-numeric encoder of the
system; and
FIG. 5 is a schematic diagram of the diode matrix digit
decoder.
DETAILED DESCRIPTION
The display units as seen by the players are illustrated in FIG. 1
and include a memory display 1 and a momentary display 3.
The front panel 2 of the memory display includes the letters
B-I-N-G-O on the left. The top row, called the "B" row includes the
numbers one through 15; the next row, called the "I" row includes
the numbers 16 through 30; the third row from the top includes the
letter "N" and the numbers 31 through 45; the fourth row includes
the letter "G" and the numbers 46 through 60; and the bottom row
includes the letter "0" and the numbers 61 through 75. A
compartmented structure and individual light bulbs are located
behind front panel 2 to permit selective illumination of the
numbers and letters. The letters B-I-N-G-O remain illuminated
throughout the game. The numbers are not illuminated until selected
and thereafter remain illuminated until the game is reset.
The momentary display includes an alpha display 4 across the top
for selective display of the letters B-I-N-G-O. The digits displays
5 and 6 appear below the alpha display and are capable of
displaying the numbers one through 75.
The system is controlled from a push button 11 which is part of a
transmitter control unit 10. When the operator activates the push
button, the selector goes into operation causing numbers and their
associated letters to appear on the momentary display in rapid
succession following a sequence which appears to be random. When
the selector comes to rest the number appearing on the momentary
display is the selected number. If this number is "35" as shown in
FIG. 1, the number "35" is also illuminated on memory display 1
when the selection process is completed.
The block diagram in FIG. 2 shows the basic circuit arrangement.
The signal from the remote transmitter circuit 10 is received by a
receiver 12 which in turn activates the control circuit 13. The
control circuit determines the time interval during which the
selector circuit 14 operates. The selector circuit includes a 75
step stepping switch SS-1 which advances step-by-step when
activated. The time interval as determined by control circuit 13 is
different for each successive operation and, hence, the number of
steps by which the stepping switch advances is likewise different
for each successive operation. The time interval varies in a random
fashion and therefore the numbers selected by selector circuit 14
are selected in a random fashion.
An alpha-numeric encoder circuit 15 converts the position
indication of the stepping switch into corresponding electrical
signals which will cause selective display of the letters and
digits on the momentary display. A first digit decoder circuit 17
illuminates selected segments of the units digit display 6, a
second digit decoder circuit 16 illuminates selected segments of
the tens digit display 5 and an alpha decoder circuit 18
illuminates selected letters in the alpha display 4. The operation
of circuits 15 through 18 is such that the instantaneous position
of the stepping switch is always indicated by the letters and
digits of the momentary display.
Memory circuits 19 includes 75 electromagnetic relays corresponding
to the 75 numbers. When the stepping switch of selector circuit 14
comes to rest the corresponding relay is energized which in turn
energizes the lamp bulb of memory display 2 causing a display of
that number for the remainder of the game.
A "no repeat feedback" circuit is built into the system so that the
selector circuit cannot select a previously selected number. If the
stepping switch attempts to stop at a previously selected number as
indicated by an energized relay in memory circuits 19, a feedback
signal is supplied to control circuit 13 causing the stepping
switch in circuit 14 to continue advancing. The stepping switch
continues to advance in step-by-step fashion until a number is
reached which has not been previously selected.
Control circuit 13, selector circuit 14 and memory circuits 19 are
shown schematically in FIG. 3, alpha-numeric encoder 15 is shown
schematically in FIG. 4 and digit decoder 17 (schematically the
same as digit decoder 16) is shown in FIG. 5.
Capacitors 22, 25, 26, 27 and 28 in FIG. 3 determine the basic time
interval during which stepping switch SS-1 is energized.
Contacts 20 are part of receiver 12 and are closed whenever a
signal is being received from transmitter 10. Contacts 20 are
connected in series with a diode 21 between B+ and one plate of
capacitor 22, the other plate of the capacitor being connected to
ground. Junction A between diode 21 and capacitor 22 is connected
to one plate of capacitor 25 via a diode 23 in series with a
resistor 24 and the other plate of capacitor 25 is connected to
ground. A diode 32 is connected in parallel with resistor 24 with
the common cathode connection of diodes 23 and 32 being designated
junction B and the anode connection of diode 32 being designated
junction C. Capacitors 26 through 28 are connected in parallel
between junction C and ground in series, respectively, with
contacts 41 through 43 of a program relay PR.
Program relay PR is a multi-position relay arranged to close a
different combination of contacts in each position. For example, in
a first position contacts 41 may be closed, in a second position
contacts 42 and 43 may be closed, in a third position all contacts
may be closed, etc. Thus, one or more of the capacitors 26 through
28 may be connected to junction C depending upon the position of
the program relay.
The capacitors are charged when contacts 20 close. Capacitor 22
rapidly charges to the full value of B+ . Capacitor 25 and those of
capacitors 26 through 28 connected in parallel charge more slowly
via resistor 24. Resistor 24 is sufficiently large such that
capacitors 25 through 28 will only reach a partial state of charge
while contacts 20 are closed.
Winding 30 of relay K1 is connected between junction B and ground
used is in the discharge path of capacitors 22 and 25 through 28.
Winding 30 is initially energized when contact 20 close due to
current flow through diodes 21 and 23. Thereafter, when contacts 20
open, the winding remains energized because of the discharge
current of capacitor 22 via diode 23. Since capacitor 22 is fully
charged and capacitors 25 through 28 are only partially charged the
potential at junction A (and junction B) is initially higher than
the potential at junction C. Diode 32 is therefore initially
back-biased and capacitors 25 through 28 do not begin to discharge
until the potential at junction B drops below the potential of
junction C. Winding 30 remains energized until capacitors 22 and
25-28 are all discharged.
Typical values for components in the timing circuit are as
follows:
capacitor 22 250 mfd. capacitor 25 500 mfd. capacitor 26 500 mfd.
capacitor 27 250 mfd. capacitor 28 100 mfd. resistor 24 2.2 K
there are several factors contributing to the random variation of
the basic time interval (period during which relay K1 is in the
energized state) from one play to the next. The time interval will
vary in accordance with the closure time of contacts 20 which will
vary over a wide range. The interrelation between the contact
closure time and the basic time interval is highly nonlinear and
complex such that undetectable changes in closure time may
drastically change the basic time interval. Another significant
factor is the variations of the quantity of capacitance in the
circuit due to the action of program relay PR. Also changes in
circuit parameters for example, due to temperature, stray
capacitance, contact bounce and arcing provide further randomness
in the basic time interval.
Relay K2 directly controls energization of stepping switch SS-1 in
accordance with the basic time interval and, as will be explained
later, to avoid repeats of the selected number. Normally open
contacts 31 of relay K1 are coupled to winding 50 of relay K2 to
complete a circuit from B+ to ground when relay K1 is energized.
Normally open contacts 51 of relay K2 are connected directly to
winding 60 of relay K3 and to winding 70 of stepping switch via
off-normal contacts 71 of the stepping switch.
Stepping switch SS-1 has a rotary movable contact 72 which advances
through a 75 step sequence making contact with the stationary
contacts 73 in succession. Each time winding 70 is energized the
movable contact advances one step and momentarily opens the
off-normal contacts 71. Because of periodic interruption of current
flow through the winding caused by the off-normal contacts, current
flow through closed contacts 51 of relay K2 will cause the stepping
switch to advance continuously repeating the 75 step sequence until
contacts 51 open.
The memory circuits include 75 relays K101 to K175 which are each
associated with a different one of the Bingo numbers. For
convenience only three of these relays are shown in FIG. 3. Relay
K101 is associated with the first Bingo number and includes a
winding 80 and two sets of normally open contacts 81 and 82. The
seventh stationary contact of contact bank 73 of the stepping
switch is connected to one end of winding 80, and the other end of
the winding is connected to ground. A reset switch 76 connects B+
to one end of winding 80 via contacts 81 to form a hold circuit.
The lamp bulb 83 associated with the first Bingo number on the
memory display (FIG. 1) is connected in series with contacts 82
across on AC source. When relay K101 is momentarily energized as a
result of current flow from the stationary contact of the stepping
switch, the relay thereafter remains energized because of the hold
circuit completed via contacts 81 and lamp bulb 83 is illuminated
as a result of current flow via contact 82.
In similar fashion winding 90 is connected to the second stationary
contact and winding 100 is connected to the 70th contact. The
connection between the relays of the memory circuits and the
stationary contacts of the stepping switch is preferably
nonsequential so that the display of numbers on the momentary
display will appear to skip around in a random fashion. Contacts 91
and 101 provide hold circuits for the relays and contacts 92 and
102 energize the associated light bulbs.
The circuit which prevents a repeat selection of a number includes
normally open contacts 63 of relay K3 and diode 59 connected
between movable contact 72 and winding 50 of relay K2.
Assume that at the end of the basic time interval (deenergization
of relay K1 which would normally deenergize relay K2 to in turn
deenergize the stepping switch) the stepping switch is in the
position shown and that Bingo number 35 had been selected
previously so that relay winding 90 is energized. Under these
conditions current would flow through switch 76, contacts 91,
movable contact 72, contacts 63 and diode 59 to maintain winding 50
of relay K2 in the energized state and therefore the stepping
switch remains energized via closed contacts 51 of relay K2 to
advance to the next position. As a result, the stepping switch
cannot come to rest on a previously selected number, but instead,
will continue to advance until reaching a number which has not
previously been selected.
Relay K3 includes contacts 61 and 62 which, respectively, develop
pulses for energizing a relay in the memory circuits and for
advancing program relay PR when the stepping switch comes to rest.
The B+ is connected to the normally open stationary contacts via
diodes 64 and 65 and the associated movable contacts 61 and 62 are
connected, respectively, to capacitors 66 and 67. The normally
closed stationary contact associated with movable contact 61 is
connected to movable contact 72 of the stepping switch via a diode
68 and the normally closed contact associated movable contact 62 is
connected to winding 40 of program relay PR via a diode 69.
As previously mentioned, relay K3 is energized while stepping
switch SS-1 is energized and advancing. Under these conditions
capacitors 66 and 67 are charged via contacts 61 and 62. When relay
K2 is deenergized opening contacts 51 in turn deenergizing stepping
switch SS-1 and relay K3. When this happens, capacitor 66
discharges via movable contacts 61 and 72 to energize the relay in
the memory circuits (relays K101 to K175) associated with the then
existing position of the stepping switch. Capacitor 67 discharges
via contacts 62 to momentarily energize winding 40 of the program
relay and advance the program relay so that a different combination
of capacitors 26 through 28 will be in the circuit during the
selection of the next number.
Thus, the operation of the system to randomly select a number
commences when pushbutton 11 is actuated to provide a momentary
closure of contact 20. Capacitors 22 and 25 through 28 charge while
contacts 20 are closed and thereafter discharge to maintain relay
K1 in an energized state for a period of time which is different
for each successive play by the operator.
Relay K1, when energized, in turn energizes relay K2 which then
maintains relay K3 and the stepping switch in the energized state.
The stepping switch advances until the end of the basic time
interval at which time relay K1 returns to the deenergized state.
However, if the stepping switch position corresponds to a
previously selected number, as indicated by an energized relay in
the memory circuits K101 through K175, a feedback signal flows
through contacts 63 and diode 59 to maintain relay K2 in the
energized state until the stepping switch has advanced to a
position corresponding to a Bingo number which has not been
previously selected. When this position is found, relay K2 is
deenergized which in turn deenergizes relay K3 and the stepping
switch. As relay K3 returns to the deenergized state it develops a
pulse which passes via contacts 61 and 72 to energize the selected
relay in the memory circuits and also develops a pulse which passes
via contacts 62 to advance program relay PR one step to change the
capacitance in the timing circuit for the next play.
The operation continues in this fashion with a new number being
selected upon each activation of pushbutton 11. When sufficient
numbers have been selected for a winner to be declared, switch 76
is opened to deenergize the hold circuits of the relays in the
memory circuits and, hence, the system is ready for a new game.
The alpha-numeric encoder shown in FIG. 4 operates to develop
electrical signals for energizing the digit and letter displays
appearing on the momentary display according to the instantaneous
position of the stepping switch. The terminals 78 of the encoder
are connected to a separate bank of stationary contacts (not shown)
of the stepping switch. The interconnection of the 75 terminals 78
and the stationary contacts of the stepping switch follows the same
sequence of the interconnection between the 75 terminals 74 (FIG.
3) and the associated bank of stepping switch contacts 73 so that
there will be a correspondence between the momentary and memory
displays. The movable contact associated with the second bank of
contacts (not shown) is connected to B+ so that the stationary
contacted associated with the instantaneous position of the
stepping switch is energized.
The isolating diodes 121 connect the individual input terminals 78
to the appropriate ones of the "units" digits terminals 120. In
similar fashion the input terminals 78 are each connected to the
appropriate one of the "tens" digits terminals 122. For example,
the tenth through nineteenth terminals are connected to the "10"
digit terminal via isolating diodes 124 and the twentieth through
twenty-ninth terminals are connected to the "20" digit terminal via
isolating diodes 125. Also, the input terminals are each connected
to the appropriate one of the letter terminals 127. The first 15
input terminals are connected to the "B" terminal via isolating
diodes 126, the next fifteen terminals are connected to the "I"
terminal via isolating diodes 128.
Accordingly, when the stepping switch is in a position
corresponding to Bingo number "12," current will flow from B+
through the movable contact of the stepping switch, the twelfth one
of the contacts 78 and the isolating diode to energize the "2," "
10" and " B" output terminals. Similarly, if the stepping switch is
at a position corresponding to Bingo number "24" the "4," "20" and
"I" output terminals are energized.
The encoding diode matrix for energizing selected segments of the
units digits display 6 is shown in FIG. 5.
The seven segments of the digit display are arranged as shown in
FIG. 5, the segments being designated by the letters a through g.
The segments are connected to corresponding lines running
vertically in FIG. 5. The 10 units terminals 120 are connected to
lines running horizontally. The circles at the intersections each
represent a diode connection between a horizontal and vertical
line.
As indicated by the designations toward the right in FIG. 5, if the
"1" terminal is energized, the diode connections of the matrix are
such that lines f and g are energized which provides a display of
the number "1" on digit display 6. If the "2" terminal is
energized, lines a b c e and f are energized to provide a display
of the number "2" on the digit display 6. The display of the other
numbers is obtained in similar fashion.
The encoder for the tens display is the same as that shown in FIG.
5 except that input terminals 120 are replaced by terminals 122
(FIG. 4). Since the alpha display consists simply of illuminating
separate compartments for the letters B-I-N-G-O terminals 127 can
be connected directly to the light bulbs without the need of any
special encoders.
Although only one illustrative embodiment has been described in
detail it should be obvious that there are numerous variations
within the scope of this invention. For example, the
electromechanical components such as relays and stepping switches
can be replaced by comparable solid state components and circuits.
The apparatus can be modified and used in connection with other
games of chance such as roulette. The invention is more
particularly defined in the appended claims.
* * * * *