U.S. patent application number 16/120368 was filed with the patent office on 2018-12-27 for operations with instrumented game ball.
The applicant listed for this patent is Russell Brands, LLC. Invention is credited to Mark Joseph Davisson, Kevin King, John Joseph Knittle, Matthew Anthony Tyson.
Application Number | 20180369654 16/120368 |
Document ID | / |
Family ID | 49882454 |
Filed Date | 2018-12-27 |
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United States Patent
Application |
20180369654 |
Kind Code |
A1 |
King; Kevin ; et
al. |
December 27, 2018 |
Operations with instrumented Game Ball
Abstract
This document provides a computer-implemented method that
includes placing an athletic ball containing a battery on an
inductive charging device; generating an electric or magnetic
field, or both with the inductive charging device; receiving energy
from the field or fields via a receptor located inside the athletic
ball; and charging a battery inside the athletic ball using the
received energy. This document also provides devices and methods
for detecting events with an instrumented player-controllable game
device, such as an event of a basketball or soccer ball passing
through a goal.
Inventors: |
King; Kevin; (Columbus,
OH) ; Tyson; Matthew Anthony; (Columbus, OH) ;
Davisson; Mark Joseph; (Rensselaer, IN) ; Knittle;
John Joseph; (Westerville, OH) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Russell Brands, LLC |
Bowling Green |
KY |
US |
|
|
Family ID: |
49882454 |
Appl. No.: |
16/120368 |
Filed: |
September 3, 2018 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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14411938 |
Dec 30, 2014 |
10076685 |
|
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PCT/US2013/048958 |
Jul 1, 2013 |
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16120368 |
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61667183 |
Jul 2, 2012 |
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61667178 |
Jul 2, 2012 |
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61711186 |
Oct 8, 2012 |
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61793206 |
Mar 15, 2013 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A63B 15/02 20130101;
A63B 2225/50 20130101; A63B 2220/34 20130101; A63B 2225/20
20130101; H02J 50/60 20160201; H02J 50/90 20160201; A63B 43/004
20130101; A63B 69/0071 20130101; A63B 2243/0037 20130101; H02J
50/40 20160201; H02J 50/10 20160201; A63B 41/00 20130101; H01Q
1/2225 20130101; A63B 2220/80 20130101; A63B 2024/0034 20130101;
A63B 2220/30 20130101; A63B 2243/0025 20130101; A63B 2220/40
20130101; A63B 2220/10 20130101; A63B 2220/35 20130101; A63B
24/0021 20130101; A63B 45/00 20130101 |
International
Class: |
A63B 43/00 20060101
A63B043/00; H02J 50/10 20160101 H02J050/10; H02J 50/40 20160101
H02J050/40; H02J 50/60 20160101 H02J050/60; A63B 15/02 20060101
A63B015/02; H02J 50/90 20160101 H02J050/90; A63B 41/00 20060101
A63B041/00; A63B 45/00 20060101 A63B045/00; A63B 69/00 20060101
A63B069/00; A63B 24/00 20060101 A63B024/00 |
Claims
1. A computer-implemented method, comprising: identifying, with a
computer system, data captured from sensors positioned to sense a
magnetic field around, created by, or affected by a sporting device
as part of an actual sporting event; analyzing the data with the
computer system to identify a temporary change in a field around
the sporting device that is indicative of a scoring event using as
part of the sporting event the sporting device; and registering the
occurrence of a scoring event in response to the analyzing.
2. The computer-implemented method of claim 1, wherein identifying
data captured form the sensors comprises streaming data wirelessly
from the sporting device to a wireless access point as the sporting
device captures more data about the sporting event.
3. The computer-implemented method of claim 2, wherein streaming
data wirelessly from the sporting device comprises essentially
simultaneously streaming data that indicates motion of the sporting
device and data that represents a field around the sporting
device.
4. The computer-implemented method of claim 1, wherein analyzing
the data comprises identifying a disruption of defined magnitude in
a magnetic field around the sporting device.
5. The computer-implemented method of claim 4, wherein the sporting
device is an inflatable ball and the field around the sporting
device is created by electronics within the sporting device.
6. The computer-implemented method of claim 4, wherein the sporting
device is an inflatable ball and the field around the sporting
device is created by application of electrical energy to a goal
through which the sporting device passes.
7. The computer-implemented method of claim 4, wherein the sporting
device is an inflatable ball and the field around the sporting
device is the magnetic field of the earth.
8. The computer-implemented method of claim 4, wherein the sensors
comprise electrically conductive devices applied in or on a bladder
or shell or both of the sporting device.
9. The computer-implemented method of claim 8, further comprising
using the electronically conductive devices to provide inductive
charging to electronics inside the ball and through a shell of the
ball.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of U.S. patent
application Ser. No. 14/411,938, having a filing date of Dec. 30,
2014, which is a National Stage application under 35 U.S.C. .sctn.
371 of International Application No. PCT/US2013/048958, having and
International Filing Date of Jul. 1, 2013, which claims the benefit
of U.S. Provisional Application Ser. 61/667,183, filed Jul. 2,
2012; U.S. Provisional Application Ser. No. 61/667,178, filed Jul.
2, 2012; U.S. Provisional Application Ser. No. 61/711,186, filed
Oct. 8, 2012 and U.S. Provisional Application Ser. No. 61/793,206,
filed Mar. 15, 2013. The disclosure of the prior applications are
considered part of (and are incorporated by reference in) the
disclosure of this application.
TECHNICAL FIELD
[0002] This document relates to systems and techniques for
operating an instrumented game device that can be handled by a
user, such as a basketball or soccer ball that has motion sensors
and other electronics mounted in and/or on the device.
BACKGROUND
[0003] Athletics has become an integral part of society, with
multiple television channels dedicated to sporting events, with
professional athletes promoting all sorts of products, and with the
public holding star athletes--both amateur and professional--in
high regard, so as to support financial rewards such as college
scholarships, sponsorship opportunities, and other
revenue-generating careers. Millions of people watch professional
and collegiate athletic events on any given night, and hundreds of
millions or billions watch major events like the Super Bowl, Final
Four, the soccer World Cup, and other championships.
[0004] As a result, athletes can make large sums of money, as can
the teams and others that support them. The relative increase in
importance of athletics has been accompanied by attempts to
increase athletic performance at all levels of development, from
young children to professionals. Many such techniques depend on
personal, subjective review of an athlete's performance and skills,
and thus can suffer from observer bias and other similar issues.
Also, many factors for athletic performance are too subtle for
human observance.
SUMMARY
[0005] This document describes systems and techniques that may be
used in combination with an instrumented human-manipulable sporting
device such as a soccer ball or basketball. In particular, the
techniques described here relate to support that may be provided
for instruments that are located in or on such sporting devices,
such as sensor assemblies located in a ball for measuring movement
(e.g., gyros and accelerometers) of, and magnetic fields around,
such devices. Data generated by such components can be used in a
variety of ways, such as to compare one athlete's performance to
the performance of other athletes (whose performance metrics based
on ball motion data may be stored in a central database), to
provide data in association with entertainment (such as showing
motion-derived statistics or other data overlaid on the screen of a
television of a sporting event that is in progress), or in using
motion data to affect the play of a videogame, such as by using
motion data from a person to affect the manner in which his or her
avatar performs in a videogame.
[0006] In one example, inductive charging of electronics in a ball
may occur from a dock onto which the ball may be placed. The dock
may include one or more electrically-charged primary coils that
establish an electrical and magnetic field above the dock and
coil(s), while the ball may be provided with one or more secondary
coils that are sized, shaped, and arranged to have inductive
current created in them by the dock. For example, one or more
metallic coils may be imprinted on or in a rubber bladder for a
ball, in a position so that an electrical current is induced in the
coils when they are placed above a charging station. In another
example, the secondary coil may be made from a flexible printed
circuit board that can be installed between the construction layers
of a ball. In some embodiments that use a single secondary coil,
the ball may need to be positioned on the charging station in a
particular orientation to achieve efficient inductive coupling
between the primary and secondary coils--and the outside of the
ball may be imprinted with indications (e.g., arrows pointing in
the appropriate direction, or a drawing of the ball properly
positioned) or instructions to cause a user to position the ball
properly.
[0007] In some embodiments, multiple such coils may be located
around the ball so that the ball is not required to be positioned
at a particular angle, but can simply be dropped on the dock or
other portable charging or detection device (which may be in the
form of a standard rolling basketball rack that can hold multiple
balls, or in another appropriate form). The dock or other portable
charging or detection device may also include wireless
communications capabilities and electronics for initiating
communication with any ball placed in the dock, so as to read data
off such a ball, to identify the ball, and to cause the ball to
erase its memory of such data so as to make room for additional
data.
[0008] In another example, this document describes systems and
techniques that may be used to identify certain events relating to
a player manipulable item, such as a game ball. In the examples
described herein, instrumentation and sensors may be provided in a
game ball or similar item (e.g., hockey puck), including sensors
for identifying the presence of metallic objects near or around the
item. As one example, electronics in a ball (e.g., applied to or in
the bladder of an inflatable ball) may be electrically energized,
and sensors may sense an electric field created by such energizing.
When the ball passes by a metallic object, such as the ring of a
basketball hoop, the field can be affected, and such affectation
can be sensed with the sensors. When the signature of the change
reflects a change that is known to relate to the ball passing
through the ring of the hoop (perhaps by the magnetic data alone,
or in combination with other data, such as accelerometer or gyro
data that indicates a player recently released the ball in the form
of a shot, or slammed it down in the form of a dunk, and also in
combination with after-occurred data, such as a sudden but soft
deceleration and change in rotation that is indicative of the ball
"swishing" through the net in basketball), the ball can record an
event that is associated with a made shot (e.g., by storing a flag
that relates to such an event along with a clock time for the
event). The ball may then communicate that data--either immediately
while the ball is being used, or later such as when the ball is
laid in an inductive charging cradle that also includes wireless or
wired data communication capabilities for communicating with the
electronics inside the ball.
[0009] As another example, coils can be located in the ball to
sense the earth's magnetic field. That is, the coils can be
configured to sense the far-field electromagnetic field emanating
from the earth. In addition, the coils of the ball are able to
sense disturbances to the far-field signals, and those disturbances
can be correlated to information about objects in close proximity
to the ball. For example, when the ball is close to a ferromagnetic
(e.g., steel) basketball rim, the coils of the ball will sense a
disturbance in the magnetic field signal. The near-field signature
of the ball being close to the basketball rim, but not passing
through the rim will be detectably different from the near-field
signature of the ball passing through the rim. Thus, the magnetic
field signals received by the coils can be correlated to whether a
goal was made or missed.
[0010] Through such mechanisms or other mechanisms, such as by
Wi-Fi or Bluetooth wireless data connections, associated
electronics in the ball may be paired with a communication and/or
computing device such as a smartphone or tablet computer. A sensor
unit in the ball may have a pairing table memory that stores
several previously paired Bluetooth- or other-enabled devices. An
application installed on such a device, such as an application
downloaded to the device from an application stored, can be
purchased or obtained for free, and may provide for enhanced
interactivity with such a ball. For example, an athlete may charge
a ball on a charging base or dock, and may at that time or another
time pair the ball or the dock with a smartphone. The athlete may,
after charging the electronics in the ball, perform a number of
predetermined, instructed (e.g., from a web site or an app on their
smartphone) drills, such as dribbling (e.g., regular dribbling,
crossovers, etc.) and shooting drills (e.g., set shots and jump
shots from various locations and distances). While the drills are
being performed, the ball may collect motion data and may partially
process the data into a usable form by employing on-board
processing algorithms and circuitry. (The ball may turn on
automatically upon sensing a certain number of hard bounces, and
may turn off automatically when placed in a charging base or dock,
or upon the expiration of a predetermined time without a hard
bounce, e.g., an acceleration similar to a bouncing of the ball on
a hard floor, like in a typical dribble). During the drills or upon
completion of the drills, the data may be transmitted in whole or
in part of the smartphone or other device, and a user may employ a
GUI on the device to ascertain his or her performance, including by
seeing his or her performance compared to one or more (e.g.,
aggregated or individual) other players of like skill levels. Such
an application may also communicate with a server system, and may
provide grades or other scores on aspects of the athlete's
performance in particular aspects of the drills, and may also
provide targeted recommendations for improving performance in
certain aspects of the athlete's game.
[0011] In certain implementations, such systems and technique may
provide one or more advantages. For example, an instrumented ball
can be provided and can be recharged conveniently and inexpensively
by a user. Multiple such balls may also be charged in a similar
manner, such as when used for practices for an entire team.
Communication to and from the balls may also occur simultaneously
with such inductive charging. The use of inductive charging
techniques enables the balls to be watertight and have no exposed
electrical connectors, while still allowing for charging of a
battery or other electrical energy storage mechanism internal to
the ball. Further, more complete and accurate statistics may be
maintained by a system, in that the precise time of a basket being
scored may be determined (to small fractions of a second), and shot
hang time can also be computed by subtracting from such a "made"
time, a time at which motion sensor data indicates that the ball
left a player's hand. Moreover, automatic scoring and statistics
gathering systems may be employed and may be less expensive than
all-human systems and provide greater accuracy and precision. Such
hoop sensing as described here may play a role in a larger system
by gathering data about the relative score of a game (and may be
integrated with the game clock to automatically determine, for
example, whether the shot was a free throw or a regular shot--and
referring may be provided a remote control with a button they press
when raising their hands to indicate a three-point shot). With such
a system, the role of scorer may also be assigned to one of the
game officials, making the administration of a game easier (fewer
people who have to be located) and less expensive.
[0012] In one implementation, a computer-implemented method is
disclosed that comprises placing an athletic ball containing a
battery on an inductive charging device; generating an electric or
magnetic field, or both with the inductive charging device;
receiving energy from the field or fields via a receptor located
inside the athletic ball; and charging a battery inside the
athletic ball using the received energy. The method can also
comprise transmitting data wirelessly from the ball in response to
sensing the inductive charging device. The inductive charging
device can have a receptacle on its top surface sized to hold the
ball from rolling when the ball is placed in the receptacle.
[0013] In certain aspects, the receptor comprises one or more coils
mounted in a periphery of the ball. The one or more coils can be
imprinted on a layer that makes out a periphery of the athletic
ball, and can include a plurality of coils in different hemispheres
of the ball so as to enable charging of the battery when the ball
is at different rotational angles in relation to the inductive
charging device. The method can also comprise measuring an electric
or magnetic field around the ball when the ball is away from the
inductive charging device. In some implementations, the one or more
coils mounted in the periphery of the athletic ball are formed
integrally with a flexible circuit board.
[0014] In another general aspect, an athletic game ball is provided
herein. The athletic game ball comprises a multi-layer ball shell
sealed from an area around the ball shell; one or more electronic
sensors located within a periphery of the ball; and one or more
inductive electric secondary charging coils located in the ball
shell or on an interior surface of the ball shell and connected to
provide electrical energy to one or more energy storage devices
connected to supply power for operating the one or more
sensors.
[0015] In various implementations, the athletic game ball may
further comprise a circuit board supporting the electronic sensors
and associated circuitry for monitoring motion of the game ball.
The associated circuitry may comprise a wireless communication chip
or chip set. The one or more inductive charging coils may be
connected to serve as antennas for the wireless communication chip
or chip set. The associated circuitry may be programmed to begin
transmitting data stored in the ball upon detecting that the ball
has been docked into a charging station. The one or more sensors
may comprise (i) an accelerometer, (ii) a magnetometer or angular
rate sensor, and (iii) near field communications sensor to identify
the ball as it relates to other devices detected in close vicinity.
The one or more inductive charging coils may be positioned so that
the ball can be charged when set at any angle in a charging base
that contacts or almost contacts only portions in one hemisphere of
the ball. The athletic ball may further comprise one or more
inductive electric primary charging coils configured to wirelessly
transmit electric power to the one or more inductive electric
secondary charging coils when the coils are placed in close
proximity to each other. The inductive electric primary charging
coils may be located in a charging base arranged to receive the
ball without the ball readily rolling off of the charging base. The
one or more inductive electric secondary coils may be imprinted on
a layer from which a shell of the ball is constructed. The one or
more inductive electric secondary coils may include a plurality of
coils in different hemispheres of the ball so as to enable charging
of the battery when the ball is at different rotational angles in
relation to a charging base. The one or more inductive electric
secondary coils may be formed integrally with a flexible printed
circuit board. The associated electronics may be programmed to
identify perturbations in an electric or magnetic field around the
ball so as to identify when the ball has passed near a gaming
goal.
[0016] In another general aspect, a method of constructing an
instrumented athletic game ball is provided herein. The method
comprises: providing an electronics receptor in an interior volume
of a ball bladder layer that is part of a periphery of the game
ball; applying one or more inductive charging coils to a layer that
is part of the periphery of the game ball; connecting the one or
more inductive charging coils to an electronic sensor package; and
inserting the electronic sensor package into the electronics
receptor so that the electronics sensor package is within the
periphery of the game ball.
[0017] In various implementations, the one or more inductive
charging coils may be applied to the ball bladder or other layers
of the ball construction. The electronics may be attached to the
inductive charging coil before the inductive charging coil is
applied to the layer that is part of the periphery of the game
ball. The electronics may be attached to the inductive charging
coil after the inductive is applied to the layer that is part of
the periphery of the game ball. At least one of the one or more
inductive charging coils may be located to surround a hole in the
ball bladder at a location of the electronics receptor. The method
may further comprise, after applying the one or more inductive
charging coils to the layer, applying windings around the bladder.
The electronics sensor package may include a battery for powering
components of the electronics sensor package and for receiving
electrical charging power from the inductive charging coil. The one
or more inductive charging coils may be connected to the electronic
sensor package before the one or more inductive charging coils are
applied to the layer that is part of the periphery of the game
ball. The method may further comprise testing charging of the
electronics sensor package via the one or more inductive charging
coils to verify proper operation of the game ball. The test may
occur by applying a defined charging action to the ball and
determining a relative change in charge of the electronics sensor
package in response to the defined charging operation.
[0018] In another general aspect, a computer-implemented method is
provided herein. The computer-implemented method comprises:
identifying, with a computer system, data captured from sensors
positioned to sense a magnetic field around, created by, or
affected by a sporting device as part of an actual sporting event;
analyzing the data with the computer system to identify a temporary
change in a field around the sporting device that is indicative of
a scoring event using as part of the sporting event the sporting
device; and registering the occurrence of a scoring event in
response to the analyzing.
[0019] In various implementations, identifying data captured form
the sensors may comprise streaming data wirelessly from the
sporting device to a wireless access point as the sporting device
captures more data about the sporting event. Streaming data
wirelessly from the sporting device may comprise essentially
simultaneously streaming data that indicates motion of the sporting
device and data that represents a field around the sporting device.
Analyzing the data may comprise identifying a disruption of defined
magnitude in a magnetic field around the sporting device. The
sporting device may be an inflatable ball and the field around the
sporting device may be created by electronics within the sporting
device. The sporting device may be an inflatable ball and the field
may be created by application of electrical energy to a goal
through which the sporting device passes. The sporting device may
be an inflatable ball and the field around the sporting device may
be the magnetic field of the earth. The sensors may comprise
electrically conductive devices applied in or on a bladder or shell
or both of the sporting device. The computer-implemented method may
further comprise using the electronically conductive devices to
provide inductive charging to electronics inside the ball and
through a shell of the ball.
[0020] The details of one or more embodiments are set forth in the
accompanying drawings and the description below. Other features and
advantages will be apparent from the description and drawings, and
from the claims.
DESCRIPTION OF DRAWINGS
[0021] FIG. 1A shows an exploded perspective view of an example
instrumented sports ball with a secondary coil for an inductive
charging system.
[0022] FIG. 1B shows an example instrumented sports ball with an
example secondary coil and electronics pack installed within the
sports ball.
[0023] FIG. 1C shows an example instrumented sports ball with
multiple secondary coils.
[0024] FIG. 2 shows an example of electronic instrumentation in a
sports ball.
[0025] FIG. 3 shows perspective view of an instrumented sports ball
on an example charging station for inductively charging the
internal battery of the instrumented sports ball.
[0026] FIG. 4 shows a top view of a cross-section of an example
instrumented sports ball on an example charging station for
inductively charging the internal battery of the instrumented
sports ball.
[0027] FIG. 5A is a flow chart of an example process for charging
an instrumented sports ball.
[0028] FIG. 5B is a flow chart of an example process for assembling
an instrumented sporting ball.
[0029] FIG. 6 shows the layers of construction an example
basketball.
[0030] FIGS. 7A-7D depict example embodiments of secondary coils
for installation in an example instrumented sports ball.
[0031] FIG. 8 shows a scenario for tracking scoring electronically
in a basketball game.
[0032] FIG. 9A show a graph of field strength around a basketball
during flight and missing a goal.
[0033] FIG. 9B show graph of field strength around a basketball
during flight and making a goal.
[0034] FIG. 10 is a flow chart of a process for registering scoring
events using an instrumented game ball.
[0035] FIG. 11 shows an example of a computer device and a mobile
computer device that can be used to implement the techniques
described here.
[0036] Like reference symbols in the various drawings indicate like
elements.
DETAILED DESCRIPTION
[0037] This document describes systems and techniques for features
that can be implemented as part of an instrumented
human-manipulatable game device, such as a soccer ball, basketball,
football, a hockey puck, a golf ball, baseball, volleyball, or the
like. In one example, coils or other structures can be provided in
a ball and may induce a current when the ball is placed near an
inductive charging pad, so as to charge rechargeable batteries in
the ball.
[0038] FIG. 1A shows an exploded perspective view of an example
instrumented sports ball 100 that is equipped to be inductively
charged. In general, the sports ball 100 includes a multi-layer
ball shell 110 or periphery, an electronics pack 120, and a
secondary coil 130. As described further below, the electronics
pack 120 can be placed in a pocket 150 that can be constructed as
an integral part of the ball shell 110. The secondary coil 130 can
be disposed between the layers of construction of the ball shell
110--such as on top of the carcass layer 140 but beneath the skin
panels (not shown). When the electronics pack 120 and the secondary
coil 130 are so installed, the instrumented sports ball 100 can
look like and function like an ordinary sports ball--because the
secondary coil 130 and electronics pack 120 are contained and
hidden within the ball shell 110 in a manner that does not
appreciably effect the typical playability performance of the
sports ball 100.
[0039] A basketball is provided here as an example embodiment of an
instrumented sports ball 100, but the systems and techniques
provided here can be applied to a variety of sporting devices, e.g.
soccer balls, footballs, hockey pucks, golf balls, baseballs,
volleyballs, or the like. For ease of description and
understanding, the instrumented sports ball 100 may be alternately
referred to herein, in a non-limiting sense, as basketball 100. In
some embodiments, basketball 100 can be a standard full-size
basketball having an inflated circumference of about 29.5 inches.
As another example, basketball 100 can be a standard mid-size
basketball having an inflated circumference of 28.5 inches. The
provided instrumented basketball 100 shares many other
characteristics in common with a standard basketball. For example,
the ball shell 110 can be constructed from multiple layers of
material. The outermost layer of the example basketball 100 can
include the generally recognizable skin panels 160 that may be made
of a synthetic or natural material that are traditionally textured
and dyed an orange color. Basketballs are typically constructed
such that directly beneath the visible skin panels 160 is a carcass
layer 140. Beneath the carcass layer 140 are other layers including
a windings layer and a bladder layer that are described in
reference to FIG. 6 below. As discussed below, the pocket can be
anchored to the inside of, to the outside of, or between any of the
layers, as appropriate. Also, a coil 120 may similarly be located
on the outside of, on the inside of, or between adjacent pairs of
any of the layers, as appropriate. Generally, the coil 120 may be
located at a level in the stack of layers that is the same level as
the opening of the pocket, though connections between the
electronics and the coil 120 may be made in various manners.
[0040] While certain aspects of the instrumented basketball 100 are
common to an ordinary basketball, one different feature is the
pocket 150 of the instrumented basketball 100. The pocket 150 can
be integrated into the construction of the ball shell 110. For
example, as described further in U.S. Publication No. 2012/0058845
which is hereby incorporated by reference in its entirety, the
pocket 150 can be initially formed by molding as a separate item.
The pocket 150 can then be affixed to an inner bladder of the ball
shell 110 (the inner bladder is described further below in
reference to FIG. 6). For example, in some embodiments, the pocket
150 can be made integral with the inner bladder of the inflatable
object during a molding process used to produce the inner bladder.
In other embodiments, the pocket 150 can be adhered to the bladder
using an adhesive welding process. In some cases, the material of
the inner bladder and the material of all or a portion of the
pocket 150 can be treated (e.g., vulcanized) to form an integral
unit.
[0041] An electronics pack 120 can be housed within the pocket 150.
The pocket 150 can be specifically configured to contain the
electronics pack 120 (e.g., by having a molded opening sized and
shaped to match the pack 120 so that the pack is held securely).
The electronics pack 120 can be an assembly of one or more
electronic components, such as a battery 122 and one or more
circuit boards 124. The battery 122 can supply power to circuit
board 124 and other electronic components housed within pocket 150.
In some embodiments, the battery 122 can receive electrical power
from the circuit board 124 to be recharged (in addition to
supplying electrical power to the circuit board 124 in order to
power components mounted on the circuit board 124). A secondary
coil 130 can be electrically attached to the circuit board 124 in
order to provide a source of electrical energy for powering a
battery charging circuit included on the circuit board 124 as
described further below. In other embodiments, the secondary coil
130 (which is "secondary" because it is arranged to receive
electrical energy inductively from a separate primary coil
described in more detail below) can be mounted directly to the
battery 122 (e.g. to a chip package or circuit board that is
packaged as part of the battery 122), which may be provided with
electronics for managing its charging and discharging.
[0042] In addition to a battery charging circuit, the circuit board
124 can include various electronic components including sensors
such as motion sensors (e.g., accelerometers, angular rate gyros,
and magnetometers), temperature sensors, pressure sensors, and
magnetometers. The sensors can be configured to, for example,
record data relating to motion of the sports ball 100 to which
pocket 150 containing the electronics pack 120 is attached or is a
part of. For example, the sensors can measure angular velocity,
acceleration, linear velocity, and/or deceleration. As another
example, the sensors can identify the number of times that a
basketball 100 is bounced or contacted within a set time period
using such measured parameters. As yet another example, the sensors
can measure an angle at which basketball 100 contacts a surface
(e.g., the floor). As yet another example, the sensors can be used
to identify a spin rate of a sports ball 100. As another example,
the sensors can be used to identify the frequency and force with
which a punching bag is punched or otherwise contacted. As still
another example, the sensors can be used to identify the number of
times a soccer ball is contacted over a set time period. The
sensors can also, for example, be used to measure the spin rate of
a spiraling football, the arc of a basketball shot, the spin axis
and spin rate of a basketball shot, or the velocity with which a
soccer ball is kicked. As still a further example, a magnetometer
sensor can be configured to sense the presence of a metallic object
external to the instrumented sports ball 100, such as when an
instrumented basketball 100 is near or goes through the metal rim
of the typical basketball goal.
[0043] The battery 122 can, for example, be a primary battery
(e.g., non-rechargeable alkaline), or a rechargeable battery such
as a nickel-metal hydride, lithium ion, lithium polymer, or zinc
oxide battery. In some embodiments, the battery 122 can be directly
installed onto the circuit board 124. In other embodiments, the
battery 122 can be connected to the circuit board 124 via
conductive wires. In some cases, the battery 122 can be
pre-packaged together with the circuit board 124 to provide a
unitary pack for insertion into the pocket 150. In other cases, the
battery 122 and the circuit board 124 can be separate items that
are connected together by electrical wires.
[0044] The electronics pack 120 can be placed in the pocket 150 so
that the electronics pack 120 is below the rim around the periphery
of the opening of the pocket 150, where the rim is coextensive with
the outer periphery of the ball (though even a round ball will
ultimately have minor variability because of seems, stitching, and
the like). However, the secondary coil 130 can remain exterior to
the pocket 150. Therefore, the electrical connection (e.g., wires
or flexible printed circuit board) between the electronics pack 120
and the main portion of the secondary coil 130 can be routed from
the electronics pack 120 located inside of the pocket 150 to the
secondary coil 130 located outside of the pocket 150.
[0045] In FIG. 1B, an embodiment illustrating an example final
installation positioning of the secondary coil 130 within the
basketball 100 is shown. In particular, a ball 100 may be enclosed
with the secondary coil 130 inside of it, in a manner that the ball
will bounce easily while maintaining pressurized air inside it--but
the secondary coil 130 may still be accessible inductively.
[0046] The secondary coil 130 can be part of a system for
inductively (wirelessly) charging the battery 122 within the sports
ball 100. In this embodiment, the main portion of the secondary
coil 130 is shown as approximately circular (from above, though
thin and arced form the side). However, as will be described below
in reference to FIGS. 7A-7D, the secondary coil 130 can also have a
variety of configurations other than circular. The secondary coil
130 is depicted by hidden (dashed) lines because the installation
position of the secondary coil 130 is positioned below at least the
top skin panels 160--and may be between other lower layers of the
ball. In this manner then, the secondary coil 130 is typically not
visible on the outside of the ball, and the one or more top skin
panels 160 that covers the coil can be made to appear no
differently than the other top skin panels 160 that do not cover a
secondary coil 130. In some embodiments, the secondary coil 130 may
be installed in an area on a layer of the sports ball 100 that has
a surface depression designed to approximately cradle the secondary
coil 130. Such a surface depression may allow the secondary coil
130 to be embedded in the ball construction layer on which the
secondary coil 130 is installed. Using this technique, the outer
surface of the secondary coil 130 can be flush with or at
approximately the same planar level as the ball construction layer
in which the secondary coil 130 resides--thereby enabling an
installation of the secondary coil 130 to enhance the playability
of the instrumented sports ball 100, in that the ball will not
bulge in any manner in a location where the secondary coil 130 is
installed.
[0047] The dashed lines of secondary coil 130 represent the
continuous electrical conductor that primarily makes up the
secondary coil 130. The ends of the coiled conductor are
electrically attached to the circuit board 124 of the electronics
pack 120. Also, the secondary coil 130 may be connected to the
circuit board 124, so as to feed field information to the
electronics so that the electronics can adequately determine the
field around the sports ball 100. In other words, and as discussed
in more detail above and below, the secondary coil 130 can both
receive electrical power and provide it for charging a battery in
the ball, can sense electrical fields around the ball and report
data about such fields (though such sensing may also or
alternatively occur using a magnetometer that is separate from the
coil 130), and can be used as a communication mechanism itself by
receiving data from and providing data to, a charging dock or other
item that might be in proximity to the ball (though such data may
also occur or alternatively occur using other wireless
communication mechanisms such as a Wi-Fi chipset attached to the
circuit board 124).
[0048] The secondary coil 130 can be constructed in various
manners. In one embodiment, the secondary coil 130 can be a type of
commercially known inductance coil product similar to those, for
example, manufactured by Vishay Intertechnology, Inc. of Malvern,
Pa. In other embodiments, the secondary coil 130 can be made of a
copper-clad flexible printed circuit board material that is
manufactured to provide conductor paths arranged in a spiral
configuration. The flexible printed circuit board material can also
have multiple layers that can provide for multiple approximately
concentric coils which can enable a higher rate of inductive energy
transfer than a single layer of material.
[0049] In some embodiments, the secondary coil 130 and the circuit
board 124 of the electronics pack 120 can be concurrently
manufactured from one piece of flexible circuit board material.
Such a configuration can eliminate the need to secondarily connect
the conductor of the secondary coil 130 to the circuit board
124--and may provide a robust and reliable electrical connection
between the secondary coil 130 and the circuit board 124. In some
embodiments, the secondary coil 130 can be manufactured separately
from the printed circuit board 124, and the two can be secondarily
electrically connected--such as at the time of the installation of
the electronics pack 120 into the pocket 150. The secondary
connections between the coil 130 and the circuit board 124 can be
made in a number of manners, including soldering, crimping, using
terminal connections, male/female connectors with detents, and the
like. Effective strain relief techniques can be provided in
conjunction with the connections to enhance the reliability of the
electrical connections between the secondary coil 130 and the
circuit board 124.
[0050] The ends of the conductor of the secondary coil 130 travel
from the coiled portion of the secondary coil 130 to the
electronics pack 120 via an approximately linear tail portion 132
as shown. The tail portion 132 can act as a shock absorber to
isolate the flexing caused by impacts at the surface of the ball
shell 110 from being transferred from the secondary coil 130 to its
connections with the circuit board 124. In this manner, the stress
on, and transmitted by, the electrical connections can be reduced,
and the reliability of the electronics can be enhanced.
[0051] FIG. 1C depicts an example embodiment of an instrumented
sports ball 104 with multiple secondary coils 130, 134, and 136.
This ball can share the same basic structure and features as
described above regarding sports ball 100, while having multiple
secondary coils 130, 134, and 136. Though the instrumented sports
ball 104 is depicted as having three secondary coils 130, 134, and
136, more than three coils may also be used. For example, each of
the eight panels in the typical basketball can have at least one
secondary coil. Further, in some embodiments, two or more secondary
coils may be positioned in each of the eight panels.
[0052] The addition of more secondary coils can provide greater
functionality and convenience regarding the inductive power
transfer process. For example, with multiple secondary coils, the
requirements for the accuracy of the positioning of the ball on the
charging station to achieve the needed coupling alignment between
the primary and secondary coils can be less stringent, or
completely eliminated. With the addition of more secondary coils,
more properly coupled orientations of the ball to the charging
station can be achieved (i.e., at least one properly coupled
orientation for each of the secondary coils). As more secondary
coils are added, one or more of the secondary coils can be in
coupling alignment with the primary coil in multiple orientations
or any orientation of the ball to the charging station. In this
manner, the orientation of the ball to the charging station can
become irrelevant or nearly irrelevant to the inductive charging
process.
[0053] Other features of the instrumented sports ball 104 with
multiple secondary coils 130, 134, and 136 may be enhanced by the
addition of multiple secondary coils. For example, the data
transfer process may be enhanced in that the data may be
transferrable over a greater distance or at a higher data
transmission rate. Further, a sensitivity of the ball 104 to detect
field disruptions near the ball 104 may be enhanced. This feature
may enable improved properties for detecting when, for example, the
basketball is near or goes through the rim of a basketball
goal.
[0054] FIG. 2 depicts a cross-sectional view of pocket 150 with the
electronics pack 120, including the battery 122 and circuit board
124, installed in the pocket 150. In some embodiments, the circuit
board 124 can be in the form of a single discrete module, and can
include sensors, a corresponding printed circuit board (PCB),
memory, and the like as described further below in reference to
FIG. 8. Also, the tail portion 132 of the secondary coils 130 may
electrically connect the secondary coils 130 to the circuit board
124 as depicted. The electrical connection of the secondary coils
to the circuit board 124 can be provided so as to supply charging
power for the battery 122, to feed field information to the circuit
board 124, and/or to enable wireless communications from the
electronics on the instrumented sports ball 100 to an external
network or computing device (using e.g., Bluetooth technology)--or
any combination of one or more of these actions.
[0055] The instrumentation of an instrumented sports ball 100 can
be located, for example, in a pocket 150 of the ball--as the
battery 122 and circuit board 124 are depicted in FIG. 2. In some
cases, the battery 122 and the circuit board 124 can be embodied as
a unitary electronics pack.
[0056] The electrical connection between the circuit board 124 and
the tail portion 132 of the secondary coils 130 can be accomplished
in a variety of ways. For example, as described above, the ends of
the tail portion 132 can be connected using male/female connectors,
soldered, terminated, crimped, etc., to the circuit board 124.
[0057] In other embodiments, the electrical connection of the
secondary coils 130 to the circuit board 124 can be made as
follows. The conductors of the tail portion 132 can be exposed
(stripped of outer insulation) and draped into the pocket 150 after
the secondary coils are installed in the ball but prior to the
insertion of the electronics pack 120 into the pocket 150. The
electronics pack 120 can have corresponding exposed electrical pads
provided on it that are in electrical communication with the
circuit board 124. Just prior to the insertion of the electronics
pack 120 into the pocket 150, the conductors of the tail portion
132 can be positioned adjacent to respective pads on the
electronics pack 120. Then when the electronics pack 120 is
inserted into the pocket 150, the inner wall of the pocket (and the
natural tendency of the tail portions to spring back straight) can
press and hold the conductors of the tail portion 132 in contact
with the pads of the electronics pack 120 to make the electrical
connections. In some cases, a retainer ring can be included that
surrounds the electrical pack 120 to clamp the conductors of the
tail portion 132 in contact with the pads of the electronics pack
120. That is, a retainer ring can be initially located around a
bottom periphery of the electronics pack 120. After insertion of
the electronics pack 120 into the pocket 150, and after the
physical contact between the conductors of the tail portion 132 and
the pads of the electronics pack 120 is established as described
above, the ring (which will have slid past the tail portion 132 as
the pack 120 was inserted) can be slid upwards to a position in
which it surrounds the periphery of the electronics pack 120 in the
area where the pads make contact with the conductors of the tail
portion 132. The conductors of the tail portion 132 can also be
contained within the retainer ring--in position against the outside
of the electronics pack 120. In this manner, the retainer ring can
provide additional clamping force to hold the conductors of the
tail portion 132 in reliable contact with the pads of the
electronics pack 120.
[0058] The pocket 150 can be used to retain or position the various
electronic components. In some cases, the pocket 150 can be
integral with an inner bladder of an inflatable object (e.g.,
sports ball 100), integral with the outer skin of an inflatable
object, or can be configured to securely affix to an inflatable
object. The pocket 150 can also be filled with a liquid, foam, or
gel that hardens partially or fully after the electronics pack 120
is placed in the pocket 150.
[0059] The electronic components retained or secured in position by
pocket 150 can include, for example, one or more motion sensors for
recording motion data and detecting motions of an inflated object
to which pocket 150 is a part. The motion data collected by the
sensors can be used to evaluate various athletic skills and
abilities, such as basketball handling skills, dribbling skills,
and shooting skills, that can be used to assess the skill level of
a player and help to improve that player's skills and
abilities.
[0060] Pocket 150 can also include an extending lip portion 152
that can be attached to a main body portion 154. Extending lip
portion 152 extends around main body portion 154 to form a circle
(e.g., a complete circle). In some cases, extending lip portion 152
is molded or vulcanized during manufacture such that it becomes
integral with a layer (e.g., an inner bladder layer, or an outer
skin layer) of the inflatable sports object. In some
implementations, extending lip portion 152 can extend further in
some directions than others (e.g., to form an oval shape). Also,
extending lip portion 152 and main body portion 154 can be
constructed together from a single piece of material. In some
implementations, extending lip portion 152 and main body portion
154 are constructed from separate pieces and affixed to one
another. Extending lip portion 152 and main body portion 154 can,
for example, be constructed from rubber, flexible or semi-flexible
plastic, leather, or composite leather (e.g., synthetic
leather).
[0061] Pocket 150 can be affixed to or be made integral with a
basketball or other inflatable sports ball. For example, pocket 150
can be designed such that all or a portion of extending lip portion
152 becomes integral with the inner bladder of a sports ball. In
some cases, the thickness of the inner bladder at the region that
includes lip portion 152 can be thicker than the inner bladder at
other regions. For example, extending lip portion 152, when
integrated into the inner bladder, can increase the thickness of
the material of the inner bladder in the region around the sensor
enclosure. In some cases, the inner bladder material can form a
flush interface with the top surface of the pocket 150 at, e.g.,
upper portions 156. When a sports ball is being manufactured, the
upper portions 156 can be placed within an opening in an inner
bladder. Once the upper portion 156 is inserted, extending lip
portion 152 and upper portions 156 can be treated (e.g.,
vulcanized) such that the material of extending lip portion 152 and
upper portions 156 become integral with the material of the inner
bladder.
[0062] In some implementations, pocket 150 can affix to or be made
integral with an inflatable object with (or without) the upper
portion 156 of pocket 150 extending above a surface of the inflated
sports object and/or extending lip portion 152, which can form a
portion of the outer surface of the inflatable object.
[0063] In some cases, upper portion 156 of pocket 150 and/or the
upper surface of cap 220 can be textured to match the texture of
the outer surface layer of the inflatable sports object when upper
portion 156 of pocket 150 and/or the upper surface of a cap 220 of
pocket 150 are configured to be exposed to an outer surface. In
some cases, a separate layer of textured material can be placed or
affixed to upper portion 156 and/or the upper surface of cap 220
such that the separate layer of textured material matches the
texture of the outer surface layer of the inflatable sports object.
Such a separate layer can be designed to have an opening that can
be aligned with the opening of cap 220. In some embodiments, cap
220 is a thin material that is selected to closely match the
properties of the inflated ball to improve bounce performance in
the area of the pocket 150. The material can be lightweight plastic
or metal, and can be concealed below the surface skin of the
ball.
[0064] In some embodiments, cap 220 may include one or more holes
in the shell material so as to expose status indicator lights such
as in the form of LED lights. Such lights can be activated so as to
indicate that the ball is turned on, is working properly, has had
an error, or other such status indication. Also the lights may be
made to blink by the circuit board 124, such as to indicate a
problem with the electronics. Various numbers and colors of lights
may be used, and the signals provided to light the lights may vary
based on the implementation. Also, the lights can be recessed
several millimeters into the ball, and the remainder of the holes
may be filled with transparent, compliant materials, such as
silicone, that will not impede the handling and play.
[0065] In some embodiments, pocket 150 can include a divider 214
for separating battery 122 from circuit board 124, and for more
securely holding battery 122 and circuit board 124 in place.
Divider 214 can be made from, for example, rubber, plastic, foam,
or another suitable material. In some implementations, the material
selected for divider 214 can be suitably shock absorbent so as to
retain battery 122 and circuit board 124 in place while absorbing
at least part of the force of an impact when an inflated object to
which pocket 150 is attached contacts a surface or other
object.
[0066] In other embodiments, pocket 150 does not include divider
214. Rather, the cavity defined by the pocket 150 can be a
substantially open space for the electronics pack 120 to reside in.
In some embodiments, the electrical pack 120 can be securely
supported within the pocket 150. In particular embodiments, the
electrical pack 120 can be surrounded with vibration dampening
material such as foam. The pocket 150 can also be designed to
absorb shock and to transfer heat away from the electronics pack
120, so as to enhance the reliability and performance of the
electronics in the instrumented sports ball 100. In some
embodiments, the pocket is attached to a foam ring, and the foam
ring is attached to the bladder of the ball. That construction can
provide enhanced vibration and impact energy absorption to protect
the electrical pack 120.
[0067] In some embodiments, the electronics pack 120 can be
securely held in the pocket 150 as a result of the air pressure in
the ball shell 100 which can collapse flexible walls of the pocket
150 to compress the electronics pack 120 within the pocket 150
(e.g., as described in U.S. Publication No. 2012/0058845). In other
embodiments the electronics pack 120 can be held securely in the
pocket 150 by installing a cap 220 in the opening defined by the
pocket 150. The cap 220 can be configured so that the installed cap
220 transmits an appropriate pressure on the electronics pack 120
to contain the electronics securely within the pocket 150. For
example, a cap 220 can be configured to provide a flush or nearly
flush surface with the uppermost layer of the pocket 150 and to
assist in ensuring that the components stored within pocket 150
remain secured in place. The cap 220 can be manufactured, for
example, from rubber, plastic, foam, leather, or composite leather.
The cap 220 can have a suitably compliant lower portion (not shown)
that interfaces with the electronics pack 120 to compress the
electronics pack 120 securely within the pocket 150. The cap 220
can be held in place in the pocket 150 using a compression fit, a
snap fit (as indicated by rim 221), by adhesive, using barbs, or
the like.
[0068] In another embodiment, rather than using a cap 220, the
electronics pack 120 can be secured in the pocket 150 by adding
another material to fill the open portions within the pocket 150
surrounding the electronics pack 120. For example, a curable liquid
material such as silicone or rubber can be poured or injected into
the pocket 150 to fill the voids around the electronics pack 150
using a potting process. After curing, the material can solidify to
hold the electronics pack 150 securely in position and to absorb
shock. In addition, the material can be selected to provide
playability characteristics (e.g., weight, bounce, balance) that
are approximately consistent with the host sports ball in general.
In another embodiment, a foam material can be injected to fill the
voids surrounding the electronics pack 120 within the pocket 150.
In some embodiments, expandable foam can be used for the potting
process, and any excess foam that protrudes from the pocket 150 can
be trimmed off after the foam has cured.
[0069] FIG. 3 illustrates an example inductive charging system 300
for charging the internal battery of an instrumented sports ball
100. The dock 310 in this example is a portable inductive power
source for use in powering or charging electrical, electronic,
battery-operated, mobile, rechargeable batteries, and other
devices, such as instrumented sports ball 100.
[0070] In general, an embodiment the charging system 300 comprises
two primary parts. The first part is the pad or charging dock 310.
The charging dock can contain one or more primary coils 340. The
primary coils 340 are typically positioned below the surface of the
charging dock, from where they emit an alternating magnetic field
when an alternating current is applied to the primary coils 340. In
some embodiments, the charging dock 310 can also contain various
signaling, and switching or communication circuitry, or means of
identifying the presence of devices or batteries to be charged or
powered. In some embodiments, the charging dock 310 is compliant
with the Qi standard for inductive charging (e.g., the ENERGIZER
Inductive Charger). In some embodiments, the charging dock 310 can
also contain multiple coils 340 or sections to charge or power
various devices or to allow charging or powering of devices or
batteries placed anywhere on the surface of the charging dock
310.
[0071] The second primary part of the charging system 300 is one or
more secondary coils that can receive the energy of the alternating
magnetic field emanating from primary coils 340 of the charging
dock 310. The secondary coils are located within the object to be
charged, e.g., instrumented sports ball 100 containing secondary
coils 130. The secondary coils transfer the energy to charge a
battery, or other device, via an electrical circuit electrically
attached to the secondary coil, e.g., the electrical circuit on
circuit board 124 that is wired to secondary coils 130. The
electrical circuit can rectify the alternating current transmitted
to the electrical circuit from the secondary coil to produce a
direct current voltage, which is then used to charge or power the
sports ball 100 and battery 122.
[0072] In this example, the inductive charging dock 310 has two
docking positions so that it can charge and communicate with at
least two sports balls 100 at the same time. Other configurations
with greater or lesser numbers of open positions are also possible.
In another embodiment, the charging dock 310 systems can be
integrated into a ball storage rack configuration.
[0073] The charging dock 310 in this example has a power cord 320
of a normal type that can be plugged into a wall outlet, and a
processing block 330 (that may be alternately located internal to
the charging dock 310) that may include, for example, a step-down
transformer and associated charging circuitry, along with
communications circuitry for causing the dock to communicate
wirelessly with the sports balls 100. In some embodiments, such
charging systems can be integrated into a rack configured for
holding or storing the sports balls 100. In some embodiments, the
charging system 300 may utilize the Qi standard created by the
Wireless Power Consortium for wireless inductive charging.
[0074] One or more primary coils 340 in the charging dock 310 may
transmit electrical energy by inductively coupling with one or more
secondary coils, such as the secondary coils 130 installed between
the construction layers of the instrumented sports ball 100. The
dock 310 may provide indicators that the primary and secondary
coils 340/130 are sufficiently coupled, such as by energizing an
indicator light 350 or by emitting audible tones. In addition, in
some embodiments, the coils or other components of the instrumented
sports ball 100 may be used to wirelessly transmit data to and from
the electronics of the sports ball 100.
[0075] In FIG. 4, section A-A of the basketball 100 illustrates the
approximate proper positioning of the secondary coil 130 in
relation to the primary coils 340. Proper alignment and close
proximity of the coils 340/130 are key factors for maximizing the
inductive transmission of electrical power from the charging dock
310 to the sports ball 100. In some embodiments, the charging dock
310 may include labels or indentations to assist with the proper
alignment. In some cases the charging system 300 may be augmented
with supplemental cradles for holding the sports ball 100 in
position on the charging dock 310. In addition, the sports ball 100
may include exterior labeling to identify to the user the proper
positioning of the sports ball 100 in relation to the charging dock
310.
[0076] In some embodiments, multiple secondary coils 130 may be
included in the sports ball 100. The multiple secondary coils 130
can be positioned within the sports ball 100 to provide for
sufficient charging of the battery 122 and for enhanced convenience
for a user. For example, the secondary coils 130 may be spaced at
multiple locations around the periphery of the sports ball 100 so
that any given secondary coil 130 will be within range of the
primary coil 340 when the ball 100 is laid on the charging dock
310.
[0077] FIG. 5A is a flow chart of an example process 500 for
charging an instrumented athletics ball. In general, the process
shows how a ball having internal electronic components may have a
battery that powers those components charged, without having to
remove the battery from the inside of the ball.
[0078] The process begins at box 502, where an instrumented ball
and a charging dock are obtained. The ball may have inside of it
several sensors and electronics and a power source for operating
the sensors and perhaps a wireless communication interface that is
capable of communicating from an inside of the ball to the outside
of the ball. The dock may include an inductive charging system for
providing charge to the ball that is matched to a system for
receiving charge in the ball and charging an energy source, such as
a battery, in the ball.
[0079] At box 504, the ball is placed on the dock. Such an action
may trigger a mechanical or electronic switch in the dock to cause
it to begin providing electrical power to a primary coil in an
inductive charging system. That may in turn activate charging
circuitry in the ball to cause energy applied to secondary coils in
the ball to charge the energy storage source (e.g., battery or
batteries), as indicated at boxes 506 and 508. The receptors that
receive the electrical power via an electric or magnetic field
generated by the dock may take a variety of forms, and may include
one or more coils in or on a shell or bladder of the ball. When a
small number of coils is used, it might be necessary to orient the
ball on the dock so that the coils are near the surface of the
dock--e.g., the coils may be at the bottom of the ball, and printed
indicia may be provided on the ball instructing a user to place the
ball in the dock right-side up. As a result of such positioning and
powering, then, the battery in the ball may be charged in a
familiar manner via inductive charging (box 510).
[0080] In addition to charging the ball from the dock, information
may be communicated from the ball to the dock (box 512), including
diagnostic information that describes the operation of and
condition of electronics in the ball, and also of user data (e.g.,
motion data and magnetic field data) captured by the electronics
while a player was bouncing and otherwise using the ball. For
example, the ball may be provided with memory to capture and store
such data, and may hold the data until triggered to transfer the
data to memory in the dock or via a network connected to the dock,
in response to a data request from the dock, which may be generated
automatically whenever the dock senses a ball. Such batch delivery
of data to the dock (as opposed to streamed delivery while the ball
is being used) may be particularly useful when a user plays
outdoors or otherwise away from an available wireless access point,
or during practices then multiple balls would be streaming
simultaneously and could potentially interfere with each other. In
the latter situation, the players at the end of practice could
simply places all the balls in a standard ball rack, and that rack
could be equipped with inductive charging and communications
electronics to charge the balls and read data from the balls.
[0081] At box 514, additional functionality of the ball is shown.
In particular, the same coils that are used as secondary coils for
inductive power transfer when the ball is docked on the charging
station can also be used to generate a small field around the ball
and to sense the strength of that field. Such operations may be
used to determine when the ball passes through the middle of a
basketball hoop (made shot) or passes by an outside edge of the
hoop (missed shot). Sharp changes in the field thus represent
presence of a ferro-metallic object near the ball, and the relative
changes sensed by multiple different sensors around the ball may be
used to determine where, relative to the ball, the object was, and
thus whether a goal was made or missed.
[0082] The operations of box 514 can also be implemented in another
manner. In this implementation, the coils located in the ball sense
the earth's magnetic field. That is, the coils are configured to
sense the far-field electromagnetic field emanating from the earth.
In addition, the coils of the ball are able to sense disturbances
to the far-field signals, and those disturbances can be correlated
to information about objects in close proximity to the ball. For
example, when the ball is close to a ferromagnetic (e.g., steel)
basketball rim, the coils of the ball will sense a disturbance in
the magnetic field signal. The near-field signature of the ball
being close to the basketball rim, but not passing through the rim
will be detectably different from the near-field signature of the
ball passing through the rim. Thus, the magnetic field signals
received by the coils can be correlated to whether a goal was made
or missed. Furthermore, when the ball is spinning with known
rotation rate (as measured by the angular rate sensors) the ball is
able to sample the 3D magnetic field and track proximity of the
ball to objects by observing and measuring the changes in the
magnetic field over time transformed through the known angular
velocity vector.
[0083] FIG. 5B is a flow chart of an example process for assembling
an instrumented sporting ball. The ball in this example may be a
basketball of standard size and physical performance (e.g., such
that it would be approved for use in organized play by relevant
regulatory bodies such as the NCAA and NBA). In general, the
process involves applying a receptacle for electronics in a bladder
of the ball and completing steps of winding the ball and placing
panels on the ball as necessary (where ball construction may differ
based on the type of ball being built, e.g., soccer, basketball,
football, etc.). The process is described here as a one-step
process in which an electronics package (which includes sensors,
associated supporting electronics, and a battery for powering the
electronics and for being inductively charged) is placed in the
ball early in the process. As such description is occurring, an
alternative two-step process will also be described, wherein the
electronics are not inserted into the ball until near the end of
the process because of concerns about heat and/or other parts of
the ball-making process being harmful to the electronics package
and particularly to the battery chemistry.
[0084] The process begins at box 522, where a rubber ball bladder
is provided. The bladder may be manufactured by conventional
techniques and may be sized appropriately so that a properly-sized
ball is produced when the bladder is covered with other necessary
layers for the ball. The bladder may be generally airtight, but may
be formed to have a hole in it for receiving an electronics
receptacle. For example, a mold for the bladder may be provided
with a blank that produces the hole when the bladder is initially
formed, or a hole may be cut mechanically into a
previously-produced bladder.
[0085] At box 524, an electronics receptacle is mounted in the
bladder. In one example, the receptacle may take the form of a
hollow, cylindrical boot having a closed end and an open and, and
having a skirt extending outward from the periphery of the open
end, so that the cylindrical portion can be passed through the hole
in the bladder and extend toward the center of the bladder (and in
the future toward the center of the completed ball), and the skirt
may interface with the edge of the hole in the bladder, such as by
having the skirt adhered (e.g., via chemical adhesive, sonic
welding, or other process that weld the skirt portion of the boot
to the bladder in an airtight manner. Thus, upon joining the boot
to the bladder in this example, the bladder will be complete and
generally airtight (except perhaps for a hole for a filling
needle), and have an apparent hole in it that leads into the
interior of the hollow cylinder of the boot. (The hole is only
apparent because the sides and bottom of the cylinder are
airtight.)
[0086] At box 526, a sensor/battery pack is inserted into the
receptacle. In particular, an electronics assembly may include
sensors (e.g., force, acceleration, and/or magnetometer),
associated circuitry for interpreting, storing, and wirelessly
transmitting information captured by the sensors, and one or more
battery cells that power such sensors and other electronics.
[0087] At box 528, the inductive charging coil is applied to the
bladder, with the coil attached to the electronics. For example,
the coil may be formed as a flat copper or similar metal ring and
may be placed on an outside surface of the bladder and centered
with the hole for the receptacle on the inside of the ring, and a
tab extending from the ring toward the receptacle so that the tab
can be electrically connected to the electronics (or already has
been before the application of the ring to the bladder). The coil
can be adhered to the bladder, for example, via a flexible adhesive
or in other appropriate manner.
[0088] When the ball is finally assembled, the electronics and
battery cells will be connected to an inductive charging coil and
be located inside an outer periphery of the ball. However, the
order in which the different components are connected to each other
can vary in different embodiments. For example, the electronics may
be attached to the battery cells before or after the electronics
are attached to the inductive charging coil, and before or after
the electronics are attached to the ball. Similarly, the
electronics may be placed in the receptacle before or after the
receptacle is placed in the ball. As one example, the electronics
could have rubber or other liquid material poured around the
electronics so as to make a receptacle that becomes unitary with
the electronics and provides good mechanical shock absorbance to
the electronics and potentially greater insulation around the
electronics (to be discussed below with respect to vulcanization
and other high-temperature steps of the process. The assembly of
the electronics in the receptacle/plug may then be inserted into
the bladder. In some examples, the electronics may be mounted
between two layers of the bladder, either as the bladder is formed
or after formation of the bladder.
[0089] Also, the electronics may be introduced before or after
high-temperature steps occur, such as vulcanization of the rubber.
Where the electronics are introduced after, the inductive charging
coil may have its tab attached to the electronics as the
electronics are provided in the ball, such as by pushing the
electronics into the receptacle as the tab extends into the
cylinder and contacts the electronics (at an electrical conductor
provide on the side of the electronics package) as the end of the
tab is bent downward by the passing of the electronics into the
hole. The inherent effort of the tab to return to a straight shape
will then hold the tab in contact with the electrical conductor on
the electronics.
[0090] Where the electronics are introduced before other
high-temperature operations, a heat protective patch may be placed
over the open end of the receptacle (box 530) and may include heat
insulative material to prevent excessive heat (e.g., 60 degrees C.)
from reaching and damaging the battery and other electronics. For
example, such material may be in the form of a plug placed in the
receptacle, and having an adhesive disk at its outside end so as to
hold the material in places in the receptacle. Also, cooling air
may be circulated through the bladder during high-temperature
operations, the receptacle may be held in a heat sink (e.g.,
immersed in a cool liquid) during the high-temperature operations
and other such actions may be taken to prevent damage to the
electronics.
[0091] In this example, the ball is then wound (box 532), in a
conventional manner, after the inductive charging coil is applied
to the bladder. The carcass of the ball is them molded in a
conventional manner (box 534) so as to create the last layer of the
ball before applying the final panels on the ball. These steps may,
in certain implementations, involve relatively high temperatures,
so that the precautions just discussed (e.g., not inserting the
batteries and/or other electronics until after the high-heat
activities, or providing insulation or heating offsets to the
components) can be taken to protect relatively sensitive components
in the ball.
[0092] At box 536, the panels are applied to the ball (where the
ball is of a type, such as a basketball, that has panels), and
various finishing steps may be performed.
[0093] Finally, before or after packing for shipment, tests may be
performed on the electronics, including tests of the chargeability
of the ball and the operation of the sensors. For example, the ball
may be placed in a fixture that moves the ball in a predetermined
manner, and wireless sensors readings may be provided from the ball
to an external computer that may identify whether those readings
match expected readings for the applied motion. Also, an inductive
electrical field may be generated in proximity to the inductive
charging coil, and a reading may then be taken from the electronics
to confirm that charge was added to the battery in the ball. With
such testing completed, the ball may be passed for packaging and/or
distribution. If the tests fail, they can be repeated one or more
times according to a predetermined protocol, and if failures
continue, the ball may be opened up and corrected or may be sold as
a "second" (where the wireless instrumented operation is not
guaranteed to work properly) or even as an un-instrumented
ball.
[0094] FIG. 6 illustrates, in cross-sectional view, the layered
construction of a typical basketball. However, other constructions
of basketballs and other types of inflatable and non-inflatable
sporting devices having a variety of constructions are also within
the scope of this disclosure. It should be understood that the one
or more secondary coils 130 of an instrumented sports ball 100 can
be positioned between any of the layers described here, and between
other layers of other constructions of instrumented sporting
devices. In implementations using more than one secondary coil 130,
the secondary coils 130 can be positioned between the same layers
or between different layers.
[0095] The skin panels 160 make up the outermost layer. Beneath the
skins panels 160 is a carcass layer 140. In some embodiments, a
secondary coil 130 can be disposed between the skin panels 160 and
carcass layer 140. Directly beneath the carcass layer 140 is the
windings layer 170. In some embodiments, the secondary coil 130 can
be disposed between the carcass layer 140 and the windings layer
170. Directly beneath the windings layer 170 is the bladder 180. In
some embodiments, the secondary coil 130 can be disposed between
the windings layer 170 and the bladder 180.
[0096] FIGS. 7A-7D depict various embodiments of secondary coils
for inductively charging an internal battery of instrumented sports
ball 100. One or more such secondary coils may be installed within
an instrumented sports ball 100. The secondary coils can also
function to wirelessly transfer data from the electronics of the
instrumented sports ball 100, and to sense ferro-magnetic objects
in the field around the instrumented sports ball 100. In practice,
as described above, the secondary coils are located beneath at
least the outermost skin panels 160 of the basketball 100. However,
here they are shown schematically on the surface of the basketball
100 to aid in visualization of the secondary coils. In general, the
surface area of the secondary coils substantially determine the
practical capacity or rate of passage of inductive energy between
the primary and secondary coils. The embodiments shown include
approximately the same total surface area, but are disposed in
different shapes to illustrate some of the various possible
configurations of the secondary coil. The configurations of the
secondary coil can be selected, for example, in relation to the
geometry of a particular sports object being instrumented, and
based on the energy transfer efficiency realized by the
configuration. The conductors of the secondary coils are typically
copper or aluminum, although other conductive materials may be
used. In some embodiments, multiple layers of coils may be used. In
other embodiments, a single layer coil may be used. The embodiments
shown are non-limiting examples of secondary coil shapes.
[0097] FIG. 7A depicts, as a first embodiment, a solid circular
secondary coil 710. It should be understood that, in practice, the
conductor making up coil 710 can be routed in a spiral
configuration within the bounds of the circle shown. For simplicity
of illustration, the individual conductor is not shown here. The
overall footprint of the solid circular secondary coil 710 is
minimized as a result of the compact coil configuration. Such a
configuration may be particularly useful for smaller sports objects
(e.g. footballs or soccer balls). The solid circular secondary coil
710 embodiment may result in a high efficiency and rate of the
inductive energy transfer.
[0098] In FIG. 7B, an ovular or race-track-shaped secondary coil
720 embodiment is depicted. From a physical standpoint, the
relatively long and narrow configuration may enable it to be
particularly well suited to certain types of large or extended
sports balls (e.g. a punching bag, football, or basketball). The
relatively large outer size of this configuration reduces the
number of turns of the conductor, which decreases the inductance
properties of the coil. Hence, efficient inductive charging can
result.
[0099] FIG. 7C depicts a third example embodiment of a secondary
coil--a circular coil 730. FIG. 7D depicts a fourth example
embodiment of a secondary coil--a square coil 740. Both of these
designs are flexible in that they can either have a larger outer
size with a narrower active coil region, or a smaller outer size
and have a wider active coil region (while maintaining a similar
total surface area). Both configurations are well suited for
efficient coupling with a primary coil.
[0100] FIG. 8 shows a scenario 800 for tracking scoring
electronically in a basketball game. The view here is an elevation
view of a single player 802 who has just taken a straightway
basketball shot, such as a free throw or a shot from the top of the
key. The ball 804 is provided with a number of instruments 806
(e.g., coils, magnetometers, or other field sensing devices) for
sensing a magnetic field through which the ball passes. That
magnetic field may be created by a structure outside the ball 804
(e.g., the earth and other sources), or by electronic structures
inside the ball 804, which structures may include instruments 806.
For example, coils may be printed or otherwise installed inside of
the ball 804, such as to an interior surface of a rubber bladder in
the ball 804 or may be inside the layer of the bladder itself so as
to protect the instruments from failure even as the flex with each
bounce of the ball 804. Four of the instruments 806 are shown here
as an example, but a variety of numbers of instruments 806 may be
employed, and they may be applied in a predetermined pattern, such
as at ordinal axes of the ball (e.g., in six locations). Such an
array may be used to better sense the presence and location of a
field (e.g., to determine whether the ball, when it passed a
basketball hoop 808, went through the hoop 808 or next to it).
[0101] A graph 810 of field strength sensed by the instruments 806
against time or location (which are the same here, since the motion
is from left to right along with time), shows an example (for
illustration only) of the sensed field strength. Such strength may
be from a single sending structure, or a combination of multiple
such structures. The particular approach for capturing the signals,
and the approach for processing them will depend on the particular
implementation and implementation goals. As can be seen, the field
is relatively constant throughout the main arc of the ball, because
the ball is far away from anything electric or magnetic (other than
the earth). However, as the ball 804 passes through the hoop 808,
the field spikes, first in one polarity, and then in another
polarity, as the metal hoop 808 approaches the ball 804 and
retreats from the ball 804 (as the ball 804 falls to the floor),
and then settles down again.
[0102] The signal may be monitored as the ball 804 is in play
(e.g., the electronics in the ball 804 can be activated by bouncing
the ball 804 to trigger a switch inside the electronics in the ball
804, and the ball 804 may go into a super lower-powered sleep mode
after a predefined period of inactivity), with a system looking for
such a spike in the field around the ball 804. The monitoring and
the detection of a scoring event may occur via electronics on the
ball 804 itself, or the field data may be transmitted form the ball
804 to a separate computer (not shown) that may analyze the data
shown here, and other data form the device such as motion data
(e.g., from accelerometers and gyros). From the analysis, an event
may be triggered to indicate a score or a miss, and the event may
be aligned with a timeline of the sporting event, such as to a
timeline whose base is a game clock time for the sporting
event.
[0103] In this example, the hoop 808 is not instrumented. In other
example, electronics connected to the hoop 808 may sense the
scoring event, such as by providing a magnetic metal in the ball
804, and sensing changes in a field around the hoop 808 (e.g., by
placing small coils around an inner surface of the hoop and
connecting them to sensing electronics).
[0104] FIGS. 9A and 9B shows graphs of field strength around a
basketball during flight and as the ball passes by or through a
goal. The graphs show actual measured values over time as a shot is
taken and made or missed. In these examples, field sensors (e.g.,
coils or magnetometers) were placed on all three axes of the
ball.
[0105] In the example of FIG. 9A, a missed shot is shown. Although
there was some change in the electromagnetic field sensed by each
sensor axis, the change was minimal. This minimal change may be
interpreted as that the ball did not pass through or even closely
proximate to the hoop.
[0106] In the example of FIG. 9B, a made shot is shown. Two of the
axes 970 and 980 show an abrupt change followed by a return to
stasis, while the other axis 960 shows a change that is
time-aligned with the other two 970 and 980 but is in the other
direction of polarity. Such a change pattern may indicate that one
of the sensors was on an opposite side of the ball as another (and
thus had the hoop on its opposite side also). This pattern may
therefore be interpreted as that the ball passed through the
hoop.
[0107] FIG. 10 is a flow chart of a process for registering scoring
events using an instrumented game ball. The process begins at box
1002, where motion and field data are captured. For example, an
electronics package in a ball may continuously capture data from
electric field sensors, magnetometers, angular rate sensors,
accelerometers, gyros, and other appropriate sensors and may
wirelessly transmit it to a form of wireless access point that is
away from the ball but near an arena or court where a sporting
event (e.g., a basketball game or scrimmage) is occurring. The data
may be streamed to a computer that is executing a data analysis
program for making sense of the data coming from the ball.
[0108] At box 1004, data in the data stream is identified that
represents each of the various parameters being measured. For
example, accelerometer and gyroscope data may be combined to
identify particular motion characteristics for the ball.
[0109] At box 1006, the process analyzes the data to identify a
temporary change in a field around the sporting device that is
indicative of a scoring event. Such analysis can occur while the
system is analyzing other parameters to identify other events that
occur with respect to the ball, such as bounces on a floor, receipt
and disposition of the ball by a player (to indicate a dribble or a
pass), and the like. The presence of a scoring event may be
identified initially by a sudden change in electrical or magnetic
field sensed by electronics in the ball, and may be confirmed by
matching the profile of the change to a known profile for a scoring
or near-scoring event. Also, a bounce of the ball off the rim can
be determined by a particular shape of magnetic field signal and a
sudden change in direction of the ball (as indicated by
accelerometers).
[0110] At box 1008, the occurrence of a scoring event is registered
by the computer system in response to the analyzing. For example,
where the field data substantially matches the pattern shown in the
image in FIG. 9B, a positive scoring event can be logged, such as
by tagging a timeline of the game with a flag for such an event
(and separately tagging a number of points represented by the
scoring event).
[0111] Separately, box 1010 shows an action that can be taken
during a break in a sporting event or when the event is complete.
In particular, the ball can be "docked" to a communication and
inductive charging pad, which may simply be a surface with a
structure to hold the ball in place and prevent it from rolling
around. Also, a traditional ball rack can be instrumented with
electronics that can both communicate with and charge (inductively)
the electronics that are inside the balls.
[0112] FIG. 11 is a schematic diagram of a computer system 1100.
The system 1100 can be used for the operations described in
association with any of the computer-implement methods described
previously, according to one implementation. The system 1100 is
intended to include various forms of digital computers, such as
laptops, tablet computers, desktops, workstations, personal digital
assistants, servers, blade servers, mainframes, and other
appropriate computers. The system 1100 can also include mobile
devices, such as personal digital assistants, cellular telephones,
smartphones, and other similar computing devices. Additionally the
system can include portable storage media, such as, Universal
Serial Bus (USB) flash drives. For example, the USB flash drives
may store operating systems and other applications. The USB flash
drives can include input/output components, such as a wireless
transmitter or USB connector that may be inserted into a USB port
of another computing device.
[0113] The system 1100 includes a processor 1110, a memory 1120, a
storage device 1130, and an input/output device 1140. Each of the
components 1110, 1120, 1130, and 1140 are interconnected using a
system bus 1150. The processor 1110 is capable of processing
instructions for execution within the system 1100. The processor
may be designed using any of a number of architectures. For
example, the processor 1110 may be a CISC (Complex Instruction Set
Computers) processor, a RISC (Reduced Instruction Set Computer)
processor, a DSP (Digital Signal Processor), or a MISC (Minimal
Instruction Set Computer) processor.
[0114] In one implementation, the processor 1110 is a
single-threaded processor. In another implementation, the processor
1110 is a multi-threaded processor. The processor 1110 is capable
of processing instructions stored in the memory 1120 or on the
storage device 1130 to display graphical information for a user
interface on the input/output device 1140.
[0115] The memory 1120 stores information within the system 1100.
In one implementation, the memory 1120 is a computer-readable
medium. In one implementation, the memory 1120 is a volatile memory
unit. In another implementation, the memory 1120 is a non-volatile
memory unit.
[0116] The storage device 1130 is capable of providing mass storage
for the system 1100. In one implementation, the storage device 1130
is a computer-readable medium. In various different
implementations, the storage device 1130 may be a floppy disk
device, a hard disk device, an optical disk device, or a tape
device.
[0117] The input/output device 1140 provides input/output
operations for the system 1100. In one implementation, the
input/output device 1140 includes a keyboard and/or pointing
device. In another implementation, the input/output device 1140
includes a display unit for displaying graphical user
interfaces.
[0118] The features described can be implemented in digital
electronic circuitry, or in computer hardware, firmware, software,
or in combinations of them. The apparatus can be implemented in a
computer program product tangibly embodied in an information
carrier, e.g., in a machine-readable storage device for execution
by a programmable processor; and method steps can be performed by a
programmable processor executing a program of instructions to
perform functions of the described implementations by operating on
input data and generating output. The described features can be
implemented advantageously in one or more computer programs that
are executable on a programmable system including at least one
programmable processor coupled to receive data and instructions
from, and to transmit data and instructions to, a data storage
system, at least one input device, and at least one output device.
A computer program is a set of instructions that can be used,
directly or indirectly, in a computer to perform a certain activity
or bring about a certain result. A computer program can be written
in any form of programming language, including compiled or
interpreted languages, and it can be deployed in any form,
including as a stand-alone program or as a module, component,
subroutine, or other unit suitable for use in a computing
environment.
[0119] Suitable processors for the execution of a program of
instructions include, by way of example, both general and special
purpose microprocessors, and the sole processor or one of multiple
processors of any kind of computer. Generally, a processor will
receive instructions and data from a read-only memory or a random
access memory or both. The essential elements of a computer are a
processor for executing instructions and one or more memories for
storing instructions and data. Generally, a computer will also
include, or be operatively coupled to communicate with, one or more
mass storage devices for storing data files; such devices include
magnetic disks, such as internal hard disks and removable disks;
magneto-optical disks; and optical disks. Storage devices suitable
for tangibly embodying computer program instructions and data
include all forms of non-volatile memory, including by way of
example semiconductor memory devices, such as EPROM, EEPROM, and
flash memory devices; magnetic disks such as internal hard disks
and removable disks; magneto-optical disks; and CD-ROM and DVD-ROM
disks. The processor and the memory can be supplemented by, or
incorporated in, ASICs (application-specific integrated
circuits).
[0120] To provide for interaction with a user, the features can be
implemented on a computer having a display device such as a CRT
(cathode ray tube) or LCD (liquid crystal display) monitor for
displaying information to the user and a keyboard and a pointing
device such as a mouse or a trackball by which the user can provide
input to the computer. Additionally, such activities can be
implemented via touchscreen flat-panel displays and other
appropriate mechanisms.
[0121] The features can be implemented in a computer system that
includes a back-end component, such as a data server, or that
includes a middleware component, such as an application server or
an Internet server, or that includes a front-end component, such as
a client computer having a graphical user interface or an Internet
browser, or any combination of them. The components of the system
can be connected by any form or medium of digital data
communication such as a communication network. Examples of
communication networks include a local area network ("LAN"), a wide
area network ("WAN"), peer-to-peer networks (having ad-hoc or
static members), grid computing infrastructures, and the
Internet.
[0122] The computer system can include clients and servers. A
client and server are generally remote from each other and
typically interact through a network, such as the described one.
The relationship of client and server arises by virtue of computer
programs running on the respective computers and having a
client-server relationship to each other.
* * * * *