Adaptive training system

[0001] 1. Field of the Invention

[0002] The present invention relates generally to training systems, and in particular to adaptive training systems including a mobile unit.

[0003] 2. Description of Related Art

[0004] When an athlete trains for a particular activity they may choose to focus on their weaknesses as well as their strengths. Many times, an athlete that is well rounded has an advantage over other competitors that are only strong in one particular aspect of an athletic activity or sport. Therefore, in selecting a workout routine or program, an athlete (or the athlete's coach) may adapt a given routine or program so that it stresses weaknesses in the athlete's performance.

[0005] In many situations, the athlete's weaknesses may not be well known. In such situations it may be useful to have a training system that is configured to evaluate the athlete's performance. Based on this evaluation, a coach or the athlete may make modifications to the training method in an attempt to stress the athlete's weaknesses according to the reported performance.

[0006] Several methods and/or devices configured to train an athlete have been previously proposed, including mechanisms for measuring various aspects of the athlete's performance. Davidson (U.S. patent number 2004/0219498) teaches a training system consisting of a computer and a trainer and/or trainee garment configured to accurately track body movements of the wearer. These body movements are then compared to reference body movements and a report is generated with the results of the comparison. In some cases, the reference body movements are generated by a coach or other trainer. For example, a trainee may wish to learn the ideal golf swing, and by comparing their body movements of the swing with the pre-programmed body movements of a golf-pro's swing, they may learn weaknesses in their swing and adapt it to conform closer to the reference swing.

[0007] A drawback of the Davidson design is the cumbersome nature of the trainer/trainee garments. In many cases, such garments could prohibit a full range of motion, decreasing the utility of the training system in such circumstances. Furthermore, the Davidson design is primarily intended to be used as a tool for comparing an athlete's body movements with the body movements of a secondary party (a coach, trainer, etc.). The Davidson design does not provide a straightforward means of comparing various aspects of the athlete's performance with one another. Finally, the Davidson design does not provide a clear method for focusing on and stressing weaknesses in the athlete's performance, and especially not in an automated manner.

[0008] Bachman (U.S. Pat. No. 5,938,564) teaches a track runner pacing device, including a running track. In the Bachman design, a pacer housing is adapted to move around the running track. The Bachman design also incorporates a control mechanism that effects the movement of the pacer housing about the track at a speed calculated from a distance and a time entered into the control means by a user.

[0009] The Bachman design includes several drawbacks. Bachman teaches the use of a pacer housing with a simple rounded track. Although the athlete must turn slightly in order to make their way fully around the track, this training device is generally configured only to stress linear speed and pacing. The Bachman design would not be well suited for training athlete's in sports where one is not confined to a track. In football, for example, an athlete must perform ‘cut-moves’ and general lateral translations that could not be modeled using the Bachman design. Additionally, using the Bachman design, an athlete (or a coach) must program information that is used to calculate a predefined pacing speed for the pacer housing. The Bachman design lacks a provision for automatically adapting the pacer housing speed to stress weaknesses in the athlete's performance.

[0010] Dassler (U.S. Pat. No. 4,703,445) teaches an athletic shoe for running and a process for providing an exchange of information concerning moving sequences. In the Dassler design, a transmitter is housed in a free space of the sole of the shoe, which, via a sensor in the sole, can emit at least one output signal. Following the transmission of the signal, a remote receiver receives the emissions. Also, a secondary transmitter and sensor may be associated with a second shoe, whose emissions are also received by the remote receiver either directly or indirectly via the first transmitter. The remote receiver may be linked with a computer. Using the information collected from these emissions, the computer may determine the distance between the first and the second shoes, on the basis of the delay between the receipt by the remote receiver of the directly and indirectly received emissions, as well as other characteristic length values related to stride rate or length. Based on this computed information, which may be stored and later analyzed, conclusions may be drawn with respect to further training phases or sequences and possibly different training phases or sequences.

[0011] A drawback of the Dassler design is that it is configured to assess only information related to stride length and/or running speed. The Dassler design lacks provisions for locating the runner along a given trajectory or path, and determining performance aspects of the athlete associated with lateral motions, banking motions, and starting and/or stopping motions. Furthermore, while the Dassler design provides tools for analyzing an athlete's running style, it does not directly provide the athlete with a means for stressing particular weaknesses in their running style. Instead, the athlete and/or coach must analyze the acquired running data and make their own judgments about new training regiments.

[0012] In some training exercises, it may be useful to have a training device that can sense the location of the athlete and either move away from, or towards the athlete. In the prior art, devices with such features are usually associated with robots. Several such devices have been previously proposed.

[0013] Oohashi (U.S. patent number 2006/0126918) teaches a robot provided with a target object detection apparatus. The target object detection apparatus includes a wireless tag worn by the target object and a camera used for recording image information. Oohashi teaches the use of an RFID tag, in particular, with the target object detection apparatus. Oohashi also teaches the use of an image processor to interpret images recorded by the camera. The camera is configured to take images of the target object's face, and using the image processor, determine, with some associated probability, the identity of the target object.

[0014] A drawback to the Oohashi design is that it lacks provisions for use as an athletic training device. Although the robot does include legs for moving, Oohashi does not teach a robot that can run or move at speeds useful for athletic training. Furthermore, the RFID tag is used to signal the target objects identity, but not as a means of location. As a result, the Oohashi design lacks provisions for determining precise distances between the target object and the robot which serves as the target object detection apparatus.

[0015] Okamoto (U.S. patent number 2006/0106496) teaches a method of controlling the movement of a mobile robot. This method is intended to provide safe and appropriate accompanying behavior to follow an accompanied target. The Okamoto design includes provisions for detecting the position of the target. The Okamoto design also teaches a method for controlling the robot to walk along a path that is parallel to the moving direction of the accompanied target. The mobile robot includes a robot body, wheels for moving the robot, and a measurement apparatus that detects the position and velocity of the robot body and a calculator that calculates a path for accompanying the accompanied target based on measurements made by the measurement apparatus.

[0016] The Okamoto design lacks provisions that would allow its use as an athletic training device. Okamoto teaches a robot that moves in parallel with the target, while a proper training device may require that the robot move ahead of, behind, or in various other directions with respect to the athlete or target. Furthermore, while the Okamoto design includes a measurement apparatus for detecting the speed and location of the target, there are no provisions for storing and analyzing these measurements in order to examine trends in the targets motion as would be useful in a training apparatus.

[0017] Hart (U.S. Pat. No. 5,083,968) teaches an interactive toy that is capable of detecting and tracking any nearby heat source such as a human body. The Hart device is further able to move to interact with the heat source, including chasing the heat source, or running away from the heat source. The Hart device also includes sensors to detect unheated objects in its path and may move to avoid these objects.

[0018] Although the Hart design does provide a device that may chase or be chased, there are several limitations that limits its use as an athletic training device. Hart does not teach the use of instruments intended to measure the position and/or location of a human. Additionally, Hart fails to teach a mechanism by which the interactive toy can move at speeds relevant to athletic training, including speeds associated with running. Also, the Hart design lacks provisions for adapting to the movements of the human.

[0019] The prior art has many shortcomings, as previously discussed. There is a need in the art for a training device or system that may solve many of the problems not addressed by the prior art. In particular, there is a need in the art for an athletic training system that includes a device that can interact with an athlete by chasing, being chased, or other similar activities at speeds that are relevant to athletic activities. Furthermore, there is a need in the art for an athletic training system that includes provisions for analyzing the movements of the athlete, determining weaknesses in the athlete's movements, and automatically adapts its own motion to yield new training routines that stress the athlete's weaknesses.

[0020] An adaptive training system is disclosed. In one aspect, the invention provides a mobile unit configured to train an athlete, comprising: a control unit configured to receive information about the location of the athlete; the control unit configured to adjust the motion of the mobile unit based on the position of the athlete; and where the motion of the mobile unit is always away from the user.

[0021] In another aspect, the mobile unit includes an optical device configured to receive optical information associated with the athlete.

[0022] In another aspect, the control unit includes a GPS antenna port configured to receive GPS information.

[0023] In another aspect, the control unit includes an RFID port configured to receive RFID information.

[0024] In another aspect, the mobile unit includes at least one device configured to transmit and/or receive information from a sensor system associated with the athlete.

[0025] In another aspect, the mobile unit determines the relative location of the athlete using information received from the sensor system and optical information associated with the athlete.

[0026] In another aspect, the invention provides a mobile unit configured to train an athlete, comprising: a control unit including a first port configured to receive information from a transmitter associated with an athlete; the control unit including a second port configured to receive optical information associated with the athlete; and where the control unit uses the information received through the first port and the second port to calculate the position and/or speed of the athlete.

[0027] In another aspect, the first port is associated with an RFID receiver.

[0028] In another aspect, the second port is associated with a video camera.

[0029] In another aspect, the first port is associated with a wireless network.

[0030] In another aspect, the position and/or the speed of the athlete is stored in a database associated with the mobile unit.

[0031] In another aspect, the control unit determines an athlete's weakest athletic skills by analyzing the stored positions and/or speeds of the athlete.

[0032] In another aspect, the control unit modifies the motion of the mobile unit according to the athlete's weakest athletic skills.

[0033] In another aspect, the invention provides a mobile unit configured to train an athlete, comprising: a set of ports that receive information associated with an athlete; a control unit that determines a weakest athletic skill based on the information associated with the athlete; and where the control unit adjusts the motion of the mobile unit in a manner that stresses the weakest athletic skill of the user.

[0034] In another aspect, the control unit includes an optical port configured to receive optical information.

[0035] In another aspect, the control unit includes an RFID port configured to receive RFID information.

[0036] In another aspect, the control unit includes a GPS antenna port configured to receive GPS information.

[0037] In another aspect, the information associated with the athlete is stored in a database.

[0038] In another aspect, the set of ports receives information associated with the location of the mobile unit.

[0039] In another aspect, the mobile unit always moves away from the athlete.

[0040] In another aspect, the invention provides a method of selecting a new training path for a mobile unit, comprising the steps of: receiving information about the location of an athlete on a practice field; receiving information about the location of at least one boundary on a practice field; and selecting a new training path that is directed away from the athlete and that does not cross the at least one boundary.

[0041] In another aspect, the practice field includes at least one boundary marker.

[0042] In another aspect, the boundary marker transmits a radio signal.

[0043] In another aspect, the location of the athlete is determined from GPS information.

[0044] In another aspect, the location of the athlete is determined from a signal associated with the athlete.

[0045] In another aspect, the practice field includes four boundary markers.

[0046] In another aspect, the four boundary markers transmit a radio signal.

[0047] In another aspect, the invention provides a method of selecting a new training path for a mobile unit, comprising the steps of: executing an initial training path; monitoring an athlete and storing information associated with the location and/or motion of the athlete; analyzing the information associated with the location and/or motion of the athlete and determining a weakest athletic skill associated with the athlete's motion; and selecting a new training path that is influenced by the weakest athletic skill associated with the athlete's motion.

[0048] In another aspect, the initial training path is received from a second party.

[0049] In another aspect, the initial training path is determined randomly.

[0050] In another aspect, the step of analyzing the information includes a step of using at least one pattern recognition algorithm.

[0051] In another aspect, the step of analyzing the information includes a step of ranking the athlete's performance in at least two athletic skills.

[0052] In another aspect, the ranking is relative.

[0053] In another aspect, the ranking is absolute.

[0054] In another aspect, the invention provides a method of training an athlete, comprising the steps of: creating a training regiment; designing a training path based on the training regiment; and submitting the training path to a mobile unit.

[0055] In another aspect, the training path is submitted via a computer.

[0056] In another aspect, the training path is created and submitted via an input device and display device associated with the mobile unit.

[0057] In another aspect, the training path is designed using a graphical program on the computer.

[0058] Other systems, methods, features and advantages of the invention will be, or will become apparent to one with skill in the art upon examination of the following figures and detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description, be within the scope of the invention, and be protected by the following claims.

[0079] FIGS. 1-2 are a preferred embodiment of training system 100. Training system 100 preferably includes practice field 106. The term ‘practice field’, as used throughout this detailed description, refers to any type of field, court, or generally open space that may be used for training activities. Examples of practice fields include, but are not limited to, football fields, soccer pitches or fields, lacrosse fields, basketball courts, as well as other types of fields and/or courts. Additionally, any open space that may be used for training activities such as those described throughout this detailed description may also be considered practice fields. For the purposes of clarity, practice field 106 is shown here as a football field.

[0080] Preferably, training system 100 may also include athlete 102. The term athlete is intended to include both professional athletes and amateur athletes. Generally, athlete 102 may be any person wishing to take part in an athletic training activity. Therefore, the term athlete, as used throughout this detailed discussion and in the claims, refers to any user of training system 100.

[0081] Training system 100 also preferably includes mobile unit 104. The term ‘mobile unit’ refers to any mechanical device with mobile capabilities, intended for use with training system 100. In some embodiments, mobile unit 104 may be configured to move around practice field 106. In particular, it is preferable that mobile unit 104 may be configured to accomplish the task of running away from athlete 102 and/or chasing athlete 102. In some embodiments, mobile unit 104 may be a robot. In other embodiments, mobile unit 104 may be more similar to a small car, cart or similar vehicle.

[0082] In the current embodiment, mobile unit 104 is seen to have a simple shape and/or design. In some embodiments, mobile unit 104 may have an appearance that is similar to a remote controlled car or other vehicle. In some embodiments, mobile unit 104 may have a ‘rover’-like appearance. It should be emphasized that the shape and design of mobile unit 104 shown in the Figures is only intended as an exemplary embodiment. Generally, mobile unit 104 may have any size, shape and/or design. For example, in another embodiment, mobile unit 104 may be human-like, including legs, arms, a head, as well as other human-like features. In still other embodiments, mobile unit 104 may be configured to look like an animal, such as animals associated with ‘chasing’, like rabbits, cats and other kinds of animals. In still other embodiments, mobile unit 104 may be equipped with features that allow mobile unit 104 to catch a ball, such as a net, sensors that can monitor the ball, such as the speed, spin, trajectory, contact, etc.

[0083] In still other embodiments, mobile unit 104 may include provisions that mimic characteristics of a real athlete or persons for the purposes of training. For example, as seen in FIG. 3, in some embodiments mobile unit 104 may include dummy 300. Using dummy 300, athlete 102 may feel more natural attempting to chase or ‘cover’ mobile unit 104. In other embodiments, other decorative features may be applied to mobile unit 104. In some embodiments, mobile unit 104 may emulate the behavior of a top athlete or “the best” athlete for training purposes so that athlete 102 can train to compete at the highest levels of his or her sport.

[0084] Preferably, training system 100 includes provisions for training an athlete with respect to various athletic skills that are important for a strong performance in many sports, such as football, soccer, tennis, or any other sport. Examples of these athletic skills include, but are not limited to linear speed, lateral speed, left turning speed, right turning speed, starting acceleration, mid-stride acceleration, deceleration as well as other capabilities. For example, a running back in football must have good lateral speed in order to avoid tackles in addition to having good linear speed in order to move the ball down the field. Therefore, it may be important to have a training system available to the athlete that trains them with special emphasis placed on one or more of these athletic skills. In another embodiment, mobile unit 104 may be equipped with sensors to detect contact, such as if athlete 102 must tackle mobile unit 104.

[0085] As seen in FIGS. 1 and 2, training system 100 is preferably configured so that athlete 102 chases mobile unit 104 on practice field 106 for training to develop faster response and reaction times. Preferably, during this chasing activity, mobile unit 104 is always moving in a way to avoid being caught by athlete 102. As mobile unit 104 constantly changes direction and/or speed, athlete 102 must adjust to the new direction and speed in an attempt to catch mobile unit 104 as athlete 102 is unable to anticipate the movements of mobile unit 104 the way that athlete 102 may be able to anticipate the movements of a person, such as by reading body language. Preferably, mobile unit 104 moves in a way so that, as athlete 102 follows mobile unit 104, athlete 102 is moving linearly, laterally, accelerating and decelerating over the course of a training session.

[0086] FIG. 4 is a schematic diagram of several devices, resources and/or provisions that are associated with mobile unit 104 and athlete 102. Preferably, mobile unit 104 may include control unit 402. Control unit 402 may include a number of ports that facilitate the input and output of information and power. The term “port” means any interface or shared boundary between two conductors. In some cases, ports can facilitate the insertion and removal of conductors. Examples of these types of ports include mechanical connectors. In other cases, ports are interfaces that generally do not provide easy insertion or removal. Examples of these types of ports include soldering or electron traces on circuit boards.

[0087] All of the following ports and provisions associated with control unit 402 are optional. Some embodiments may include a given port or provision, while others may exclude it. The following description discloses many of the possible parts and provisions that can be used, however, it should be kept in mind that not every part or provision must be used or included in a given embodiment.

[0088] Preferably, control unit 402 includes provisions for communicating with athlete 102 and/or remote computer 482. Control unit 402 can include wireless network antenna port 420 that is designed to transmit and/or receive information from wireless network antenna 422 and GPS antenna port 424 designed to transmit and/or receive information from GPS antenna 426. Control unit 402 can also include RFID port 440 that is designed to transmit and/or receive information from RFID antenna 442.

[0089] Control unit 402 can also include provisions to communicate with a wireless telephone, or other devices using various electronic protocols. Any system can be used to facilitate this communication with wireless devices; however, a low power radio frequency system is preferred. In an exemplary embodiment, a wireless local or personal area network using the Bluetooth protocol is used to facilitate communication with a wireless telephone, computer, or other electronic device with Bluetooth capabilities. In the exemplary embodiment shown in FIG. 4, control unit 402 includes a local wireless network antenna port 446 that is designed to communicate with a local wireless network antenna 448, which in turn, is designed to communicate wirelessly with any wireless device.

[0090] Control unit 402 can also include a number of items that facilitate human interaction with mobile unit 104. To receive vocal information from a user, control unit 402 can include a microphone port 432 that is capable of communicating with a microphone 434. Control unit 402 can also include an audio port 436 that is designed to send audio information to one or more speakers 438 or audio devices. These audio devices can include preamplifiers, amplifiers and/or crossovers. In some embodiments, microphone port 432 and audio port 436 are conductors associated with a single physical connector. For example, microphone port 432 and audio port 436 can be female conductors of a multi-channel coaxial plug, like a standard 2.5 mm headset plug.

[0091] Preferably, control unit 402 may be associated with various optical sensors that may be configured to monitor the location or trajectory of athlete 102. These various optical sensors may also be used to help determine the location of mobile unit 104 on practice field 106, as well as avoid obstacles and monitor general conditions of the environment. Control unit 402 can include optical port 460 that is designed to communicate with optical device 462. In some embodiments, optical device 462 may be one or more video cameras associated with various sides of mobile unit 104. For example, mobile unit 104 may include a video camera for rearward viewing that may be especially useful in tracking athlete 102 as athlete 102 chases behind mobile unit 104. Mobile until 104 may also include additional video cameras along a front side, as well as along the left and right side, and even a downward looking camera, all designed to give mobile unit 104 full view of athlete 102, the environment, and also to enable mobile unit 104 to avoid any obstacles on practice field 106. In other embodiments, optical device 462 may be an infrared camera configured to sense heat sources such as athlete 102. This infrared configuration may be useful in dark conditions such as at night.

[0092] In some embodiments, control unit 402 may include provisions such as an interactive panel that may facilitate in programming, or accessing information from, mobile unit 104. Control unit 402 may be associated with display panel port 470, designed to communicate with display device 472. To receive input from a user, control unit 402 can include an input port 474. Input port 474 can communicate with input device 476. In some embodiments, display device 472 can also receive input from a user. In some embodiments, display device 472 includes a touch screen that can receive input and in other embodiments, display device 472 includes a number of buttons that can receive input. In some embodiments, display device 472 includes both a touch screen and buttons.

[0093] A power port 476 can connect control unit 402 to power supply 480. Examples of specific types of power supplies that may be used with mobile unit 104 include, but are not limited to, standard batteries, rechargeable batteries, engines, photochemical power sources, hybrid power sources and other types of power sources. In other embodiments, power supply 480 may be a remote power source connected to mobile unit 104 using a wire or similar electrical conductor. Generally, the type of power source used will vary.

[0094] Mobile unit 104 can also include data storage provisions including one or more databases or similar data storage devices. Preferably, control unit 402 is in communication with at least one database 490 via database port 405. Database 490 can be any kind of data storage device, including but not limited magnetic, optical, magneto-optical, and/or memory, including volatile memory and non-volatile memory. In some embodiments, database 490 is integral with control unit 402 and in other embodiments, database 490 is separate from control unit 402 and communicates with control unit 402. In some embodiments, for example, database 490 may be located outside of mobile unit, and accessed remotely via any known wired or wireless methods.

[0095] In some embodiments, all or most of the items shown in FIG. 4 are housed in a single case or unit. In other embodiments, the various items shown in FIG. 4 are not housed at a single physical location, but instead, are distributed throughout mobile unit 104 and communicate with one another via known wired or wireless methods. In general, any of the items shown here may be physically located outside of mobile unit 104, and remotely access via any of the communication methods discussed here for information transfer.

[0096] Mobile unit 104 may include provisions for moving. Preferably, mobile unit 104 includes mobility system 408. Mobility system 408 may be in communication with control unit 402 via mobility system port 409. In this embodiment, mobility system 408 is a set of wheels. However, in other embodiments, mobility system 408 may be a mechanism other than wheels. For example, robots with legs that can move around have previously been disclosed. The reader is referred to U.S. Pat. Nos. 7,142,946; 7,076,338; 7,072,740; 7,061,200; 7,054,718; 7,053,577; and 7,031,806, for more information, the entirety of which are incorporated here by reference. In some embodiments, mobility system 408 may include two, three, four, or more legs. Additionally, mobility system 408 may comprise a set of tracks similar to those found in many tanks. In yet another embodiment, mobile unit 104 may be provided with the ability to hover. Hovering may be achieved with a pulley system, such as is used by cameras covering field action during National Football League games, or propellers, such as those found on remote-control helicopters.

[0097] Preferably, mobile unit 104 has the ability to attain speeds associated with high performance athletes. Because mobile unit 104 is intended to mimic motions of various athletes including a wide receiver, for example, realistic training of athlete 102 by mobile unit 104 can only be accomplished if mobile unit 104 is able to move with the same speed as a typical, or even elite, wide receiver. Generally, the fastest a human can run is in the range of 10-12 meters per second, and this is generally for very short periods of time. Although it is unlikely that an average wide receiver or other athletes will run at these speeds, especially for any extended period of time, the value of 13 meters per second may serve as an upper bound on the range of speeds which mobile unit 104 may be expected to achieve. In other words, it is preferable that mobility system 408 include provisions for propelling mobile unit 104 at any speed between 0 and 13 meters per second.

[0098] Training system 100 may also include provisions for monitoring athlete 102 during a training session. Preferably, this monitoring is performed by mobile unit 104. In some embodiments, athlete 102 may be associated with sensor system 492 designed to transmit and/or receive information between athlete 102 and mobile unit 104. In this embodiment, sensor system 492 includes sensor harness 493, including front sensor 494. Sensor system 492 also includes footwear sensor 495 that may be disposed within any part of article of footwear 496.

[0099] Front sensor 494 and footwear sensor 495 may be configured to transmit and/or receive information related to GPS data as well as RFID data. For example, sensors 494 and 495 may be configured to receive GPS information regarding the location of athlete 102 from GPS system 481 and then transmit this information to mobile unit 104. In another example, practice field 106 may include a network of RFID tags configured to transmit location related information. As athlete 102 moves through the network of RFID tags, sensors 494 and 495 may receive this location information and transmit it to mobile unit 104.

[0100] Additionally, front sensor 494 and footwear sensor 495 may be configured to transmit any signal that may be received by mobile unit 104 using one of the various receiving devices previously discussed. In some cases, by transmitting a simple signal at any desired frequency, mobile unit 104 may use this transmitted information to determine the location of athlete 102 on practice field 106. In some cases, optical information received by optical device 462 may be used in conjunction with a simple transmission signal to more accurately determine the location of athlete 102.

[0101] The configuration of sensor system 492 shown in this embodiment is only intended to illustrate the various types and locations of sensors that may be associated with athlete 102. In other embodiments, more than two sensors may be used, or only a single sensor may be used. Additionally, the location of sensors comprising sensor system 492 may vary from the preferred embodiment.

[0102] Mobile unit 104 may also be associated with computer 482. The term ‘computer’ refers to any device including a central processing unit, some kind of memory, a user interface and mechanisms for input/output. Computer 482 can be a portable computer, for example, a laptop, notebook or Personal Data Assistant (PDA). Computer 482 can include a database, generally residing in a mass storage device like a hard disk drive or an optical storage device. The term “computer” refers to the computing resources of a single computer, a portion of the computing resources of a single computer, and/or two or more computers in communication with one another, also any of these resources can be operated by one or more human users. In an exemplary embodiment, computer 482 includes a personal computer. In other embodiments, computer 482 may be a mobile computer held or worn by athlete 102, such as a watch, an Apple iPod®, or the like. This allows the system to provide real-time, immediate, or stored audio/visual feedback of performance metrics to athlete 102. For example, if athlete 102 wants to know his or her speed, reaction time, etc., athlete 102 may push a button, touch a screen or flag, or otherwise activate computer 482 to initiate display of performance metrics.

[0103] In some embodiments, mobile unit 104 may communicate with computer 482 via a wireless network, including but not limited to any broadband wireless access network or a high bandwidth packet switched network using, for example, any one of the following standards: IEEE 802.11a, IEEE 802.11b, and/or IEEE 802.11g, commonly referred to as WiFi, IEEE 802.16a, referred to as WiMAX. Computer 482 and mobile unit 104 may also communicate via the Bluetooth protocol.

[0104] Preferably, computer 482 may assist control unit 402 in processing and/or storing information gathered by mobile unit 104. In some embodiments, computer 482 may be used as an interface to program mobile unit 104 as well as receive information from mobile unit 104 regarding the performance of athlete 102. Additionally, computer 482 may be programmed to allow athlete 102 to verify random movement of mobile unit 104. For example, computer 482 may track the movement of mobile unit 104 and attempt to determine patterns using known algorithms.

[0105] In some embodiments, mobile unit 104 may be programmed to follow a particular path for training athlete 102, as designated by a trainer or coach. FIG. 5 is a flow diagram of a preferred system and method for creating a training path. The following steps are preferably implemented by a coach or trainer that has knowledge of the training needs of athlete 102. However, in other embodiments, these steps may be implemented by athlete 102 or anyone else.

[0106] During a first step 502, trainer 500 preferably creates and/or receives a training regiment for athlete 102. In some embodiments, trainer 500 may design a training regiment using general knowledge of athlete 102 as well as other information. In other embodiments, trainer 500 may receive a training regiment from an outside source, such as a book, the internet or another trainer. Preferably, trainer 500 then proceeds to create a path for mobile unit 104 that is based on the training regiment, during a second step 504. For example, if the training regiment is a set of sprinting exercises and a set of lateral running exercises, trainer 500 may create a path for mobile unit 104 that incorporates long linear paths and several lateral paths.

[0107] In another example, shown in FIG. 6, trainer 500 has created path 600 to include first linear portions 601, second linear portion 602, third linear portion 603, lateral portion 604, as well as banking portion 605 and fourth linear portion 606. Additionally, path 600 is configured to include several sharp turns 610. Using this training configuration, athlete 102 may be trained in linear speed as well as bank speed and turning speed.

[0108] In some embodiments, path 600 may be created using a simple graphical program that is preferably configured to run on computer 482 and be transmitted to mobile unit 104. In other embodiments, trainer 500 may designate path 600 using display device 472 and/or input device 476 of mobile unit 104. During a third, and final, step 506, trainer 500 may submit path 600 to mobile unit 104. In some embodiments this may be achieved by using computer 482 to submit path 600 to mobile unit 104. In cases where trainer 500 is designing path 600 using display device 472 and/or input device 476 of mobile unit 104, trainer 500 may press a ‘submit’ button to finalize the design.

[0109] It should be understood that FIG. 6 represents a possible embodiment of path 600 as created by trainer 500. In some embodiments, path 600 may be submitted to mobile unit 104 with additional information. For example, information regarding field boundaries, intermediate markers, preferred speeds, as well as other preferences associated with the envisioned training route may be submitted. For example, in some embodiments, trainer 500 may submit additional instructions that mobile unit 104 should pause for 5 seconds at halfway mark 620. This command may facilitate training athlete 102 in acceleration and deceleration. Preferably, mobile unit 104 is configured to receive additional types of information.

[0110] FIG. 7 is a flow diagram of a preferred embodiment of the processes associated with mobile unit 104, once a training session has started. Preferably, mobile unit 104 receives path information during step 702, after it has been submitted to mobile unit 104 by trainer 500. It should be understood that in other embodiments, path information could come from elsewhere besides trainer 500. In some embodiments, a predefined path could be selected by mobile unit 104, either randomly or on the basis of some input received at input device 476. For example, mobile unit 104 could be preprogrammed by a manufacturer with multiple training paths that are configured to be used on fields of various sizes.

[0111] Next, the current location of mobile unit 104 may be determined during step 704. This information may be received by GPS, preprogrammed coordinates, or using another method. In some embodiments, the current location of mobile system 104 may be stored in database 490 during step 704.

[0112] Once mobile unit 104 has received the path information and determined a current location, it may start moving during step 706. In some embodiments, mobile unit 104 may wait to start moving until it has received a ‘start’ command from athlete 102 or trainer 500. This ‘start’ command could be implemented using a vocal command that would be received by microphone 434, for example. In other embodiments, trainer 500 may transmit a ‘start’ command from computer 482 or even a separate remote of some kind.

[0113] As mobile unit 104 moves, its current location is determined during step 708. The location of mobile unit 104 may be determined using various methods. In some embodiments, the absolute location of mobile unit 104 may be determined using a GPS system, when mobile unit 104 includes GPS capabilities. In other embodiments, the location of mobile unit 104 with respect to practice field 106 may be determined using various methods, including, as previously discussed, a network of RFID tags associated with practice field 106, which may transmit location information signals that may be received by mobile unit 104. Additionally, the relative location of mobile unit 104 with respect to a starting point may be inferred by keeping track of how far it has traveled as well as any turns it has taken. Preferably, the location of mobile unit 104 is stored in database 490 during step 710. In other embodiments, mobile unit 104 may send the location information to computer 482 or to another device such as a remote database during step 710.

[0114] Presumably, athlete 102 may chase mobile unit 104 once mobile unit 104 is moving, as seen in FIGS. 1 and 2. During step 712, mobile unit 104 may receive various information about athlete 102, especially with respect to the location and/or speed of athlete 102, as previously discussed in reference to sensor system 492. Information regarding the location of athlete 102 is preferably stored in a similar manner to the information regarding the location of mobile unit 104, during step 710.

[0115] In some embodiments, additional information associated with athlete 102 may be received and/or stored. For example, an athlete's current speed, trajectory or other information may also be determined and stored. In a preferred embodiment, only the location of athlete 102, and the time the information is received may be necessary. From this location and time information, speeds, accelerations and other information may be later calculated and analyzed.

[0116] After step 712, mobile unit 104 preferably determines if it has completed the training path during step 714. If not, it continues moving along the training path during step 716, and proceeds to step 708 once again. Generally, this sequence of determining the locations of mobile unit 104 and athlete 102, as well as storing the location and/or other information, progresses very rapidly. In some embodiments, mobile unit 104 may cycle through steps 708, 710, 712, 714 and 716 hundreds or even thousands of times a second. In this sense, athlete 102 and mobile unit 104 may function as a telemetry system that is rapidly transmitting and receiving information in an attempt to precisely and accurately measure and record an athlete's motion during a training session.

[0117] When mobile unit 104 has finally completed the training path, it will preferably proceed from step 714 to step 718, where it may send all the information that it has gathered during the training session to computer 482. In other embodiments, the information may be viewed using display device 472 of mobile unit 104. This compiled information may be used by a trainer or coach to study the performance of athlete 102 and perhaps make adjustments to the training regiment.

[0118] In an alternative embodiment, mobile unit 104 may include provisions for automatically adjusting its speed along a path. FIG. 8 is an example of a training session where mobile unit 104 is so far ahead of athlete 102 that athlete 102 is running along straight path segment 804 to catch up, rather than performing lateral movements and turns along diagonal path segment 802 of path 800.

[0119] FIG. 9 is a flow chart of an alternative embodiment of a process or method associated with mobile unit 104, where mobile unit 104 may automatically adjust its speed depending on the distance between athlete 102 and mobile unit 104. Generally, mobile unit 104 proceeds, as discussed in the previous embodiment, through steps 702, 704, 706, 708, 710 and 712 until step 714. At this point, if mobile unit 104 has not reached the end of the training path, mobile unit 104 may proceed to step 902. During step 902, mobile unit 104 may evaluate its distance from athlete 102. If the athlete is close, mobile unit 104 may proceed to step 904, where mobile unit 104 increases its speed in order to keep from being caught by athlete 102. The term ‘close’ here may refer to a predefined distance. Otherwise, mobile unit 104 may proceed to step 906. During step 906, mobile unit 104 decreases its speed to prevent athlete 102 from lagging too far behind. After either step 904 or 906, mobile unit 104 may proceed to step 716 and then to step 708. As with the previous embodiment, mobile unit 104 may cycle through steps 708, 710, 712, 714, 902, 904, 906 and 716 until the end of the training path is reached. Generally, this sequence of determining the locations of mobile unit 104 and athlete 102, as well as storing the location and/or information, progresses very rapidly, as previously discussed.

[0120] When mobile unit 104 has finally completed the training path, it will preferably proceed from step 714 to step 718, where it may send all the information that it has gathered during the training session to computer 482. In other embodiments, the information may be viewed using display device 472 of mobile unit 104.

[0121] Referring back to FIG. 8, path 810 represents the path taken by athlete 102 when mobile unit 104 has slowed down enough to keep athlete 102 close behind. Path 810 is preferably similar to path 800, which may facilitate in training athlete 102 in sharp turning.

[0122] FIG. 10 is a preferred embodiment of performance report 1000 that may be compiled using information gathered by mobile unit 104 during the training session. Report 1000 may be processed by trainer 500 using computer 482, or in some embodiments, report 1000 may be processed directly by mobile unit 104. Report 1000 includes several athletic skills under column 1002 that may be evaluated via the training session with mobile unit 104. Examples of athletic skills seen in this embodiment include: top linear speed, top linear acceleration, top lateral speed, top left turning speed, top right turning speed as well as other athletic skills. The reported values, shown in column 1004, allow trainer 500 to evaluate athlete 102 with respect to various athletic skills.

[0123] In some embodiments, mobile unit 104 may include provisions for dynamically choosing a training path. In other words, mobile unit 104 may select its own training path that depends on dynamic conditions such as the current location of athlete 102 and/or boundaries of practice field 106. For example, in some cases, mobile unit 104 may randomly generate a training path that begins at its current location along practice field 106. Before mobile unit 104 proceeds, it may be important to determine if executing the currently selected training path would lead if off of practice field 106. Just as a real football player would know to stay in bounds during a game, mobile unit 104 must be able to execute self selected training paths without going out of bounds in order to realistically train athlete 102.

[0124] FIG. 11 is a flow diagram of a preferred embodiment of a method or process used by mobile unit 104 to choose and execute a training path on the basis of dynamic conditions such as athlete location and boundary locations. During step 1102, mobile unit 104 preferably creates a new training path. Referring to FIG. 12, step 1102 of selecting a new training path may be further broken down into sub-steps. Beginning with sub-step 1202 of step 1102, mobile unit 104 may determine its own location and the location of athlete 102 using any of the methods previously discussed. Following this, during sub-step 1204, mobile unit 104 may generate a new training path. This new training path may be generated using any process, including processes that generate substantially random training paths.

[0125] At this point, the training path must be further analyzed to determine if the path is permitted by a predetermined set of dynamic conditions. Two such dynamic conditions have been previously discussed. One condition, illustrated in FIG. 13, is that mobile unit 104 should always move in a direction that is ‘away from’ athlete 102. Because mobile unit 104 is training athlete 102 to chase, it would be an undesirable consequence for mobile unit 104 to execute a training path that leads directly back to athlete 102. Therefore, in some embodiments, the first dynamic condition may be a rule that requires mobile unit 104 to choose a new training path that has a first trajectory aimed away from athlete 102.

[0126] Following sub-step 1204, mobile unit 104 proceeds to sub-step 1206 of determining if the direction of the new path is away from the athlete. If the new training path meets this dynamic condition of being directed away from athlete 102, mobile unit 104 may proceed to sub-step 1208, otherwise mobile unit 104 proceeds back to sub-step 1204, where a new training path is generated. Generally, mobile unit 104 may loop through steps 1204 and 1206 until it selects a path that meets the required condition of moving away from athlete 102.

[0127] In FIG. 13, mobile unit 104 is disposed at end point 1302 of first training path 1304, with athlete 102 close behind moving along second path 1306. In order to move away from athlete 102, mobile unit 104 will preferably only consider a new training path directed along a 180 degree arc 1308 from first axis 1310. In this embodiment, first axis 1310 is perpendicular to second axis 1312 that is directed away from athlete 102. In other words, mobile unit 104 may only consider moving in directions in front of first axis 1310 and may not consider moving in directions behind first axis 1310. Alternatively, mobile unit 104 could also be programmed to consider only new training paths with first trajectories along 90 degree arc 1320 as well as any other arc of directions.

[0128] Once mobile unit 104 has proceeded to sub-step 1208, it may check to see if executing the currently generated training path would move mobile unit 104 out of the boundaries associated with practice field 106. Mobile unit 104 may determine the location of predefined boundaries using various methods. In one embodiment, the boundaries of practice field 106 may be defined using first boundary marker 120, second boundary marker 121, third boundary marker 122 and fourth boundary marker 123, as seen in FIGS. 1 and 2. These boundary markers may transmit radio signals or other types of signals that communicate with mobile unit 104. In other embodiments, mobile unit 104 may include a predefined map of practice field 106. Therefore, knowing the current location of mobile unit 104 on practice field 106 allows mobile unit 104 to determine the relative locations of the boundaries.

[0129] In cases where the currently generated path crosses over one or more boundaries of practice field 106, it may proceed to back sub-step 1204 of generating a new training path. Thus, steps 1204, 1206 and 1208 may proceed until a new training path has been selected that meets the necessary dynamic conditions. If the currently generated training path does not cross over the boundaries of practice field 106, mobile unit 104 may proceed to a final sub-step 1210, where the currently generated path may be selected for execution by mobile unit 104.

[0130] FIG. 14 illustrates a case where mobile unit 104 must select between two possible training paths on the basis of boundary conditions. In this embodiment, first path 1402 is directed across field boundary 1404, while second path 1406 is disposed entirely within practice field 106 and does not cross field boundary 1404. Therefore, in this embodiment, mobile unit 104 must select second path 1406 in order to avoid crossing field boundary 1404.

[0131] The consideration of boundaries and that requirement that mobile unit 104 should always move away from athlete 102 are only meant to be exemplary conditions for selecting training paths. In other embodiments, other conditions may be used to determine the subsequent paths taken by mobile unit 104 during a practice session. In some embodiments, boundaries may be ignored, and mobile unit 104 may move in any direction.

[0132] Referring back to FIG. 11, once mobile unit 104 has created and selected a new training path during step 1102, mobile unit 104 may then proceed to execute this new training path and start moving during step 1104. If the training session has just started, mobile unit 104 may wait to start moving until it has received a ‘start’ command from athlete 102 or trainer 500. This ‘start’ command could be implemented using a vocal command that would be received by microphone 434. In other embodiments, trainer 500 may transmit a ‘start’ command from computer 482 or even a separate remote of some kind.

[0133] As mobile unit 104 moves, its current location is determined during step 1106. The location of mobile unit 104 may be determined using any of the previously described methods. Preferably, the location of mobile unit 104 may stored in database 490 during step 1108. In other embodiments, mobile unit 104 may send the location information to computer 482 or to another device such as a remote database.

[0134] Presumably, athlete 102 may chase mobile unit 104 once mobile unit 104 is moving, as seen in FIGS. 1 and 2. During step 1110, mobile unit 104 may receive various information about athlete 102, especially with respect to the location and/or speed of athlete 102, as previously discussed in reference to sensor system 492. Information regarding the location of athlete 102 is preferably stored in a similar manner to the information regarding the location of mobile unit 104, during step 1108.

[0135] In some embodiments, additional information associated with athlete 102 may be received and/or stored. For example, an athlete's current speed, trajectory or other information may also be determined and stored. In a preferred embodiment, only the location of athlete 102, and the time the information was received may be necessary. From this location and time information, speeds, accelerations and other information may be later calculated and analyzed.

[0136] Following step 1110, mobile unit 104 may proceed to step 1112. At this point, mobile unit 104 may determine if it has reached the end of the new training path. If mobile unit 104 has not reached the end of the new training path, it may proceed to step 1116 and continue moving along the new training path. As with the previous embodiments, mobile unit 104 may proceed through a rapid cycle of steps 1106, 1108, 1110, 1112 and 1116 until it reaches the end of the new training path. Additionally, in some embodiments, mobile unit 104 may adjust its speed depending on how far mobile unit 104 is from athlete 102. This may be achieved by methods or processes discussed in previous embodiments.

[0137] When mobile unit 104 has reached the end of the new training path, during step 1112, it may proceed to step 1118. During step 1118, mobile unit determines if a control signal has been sent to stop the training session. This control signal may be sent by athlete 102, trainer 500 or anyone else. Furthermore, this control signal may be an electronic signal, a vocal signal or any other kind of signal. If a control signal has not been received, mobile unit 104 will proceed to step 1102 where it will choose a new training path on the basis of dynamic conditions, as previously discussed. Mobile unit 104 may then cycle through steps 1104, 1106, 1108, 1110, 1112, 1116 and 1118 indefinitely. Generally, this process continues until a control signal has been received to stop the training session at step 1118. At this point, mobile unit 104 may proceed to step 1120 and send information about athlete 102 to computer 482. In some embodiments, a performance report may be generated, during or after step 1120, that is similar to performance report 1000 of FIG. 10.

[0138] In some embodiments, mobile unit 104 may include provisions for adapting its movement based on more complicated dynamic conditions such as the athlete's overall performance. In some embodiments, mobile unit 104 may ‘learn’ an athlete's strengths and/or weaknesses and adjust the current training path to stress various athletic skills such as linear speed, left/right turning speed, linear acceleration and other similar athletic skills. The term ‘learn’ refers to general computational processes associated with pattern recognition, as well as other processes associated with known algorithms used in the field of machine learning. Generally, any type of learning algorithms may be used, including algorithms associated with the following types of learning: supervised learning, unsupervised learning, semi-supervised learning, reinforcement learning, transduction and learning to learn algorithms.

[0139] FIG. 15 is a flow chart of a preferred embodiment of a method or process associated with mobile unit 104. During a first step 1502, mobile unit 104 preferably creates and executes an initial training path. Step 1502 may be performed according to any of the processes or methods previously discussed with respect to creating and selecting a training path. In some embodiments, the initial training path may not be created by mobile unit 104, but instead designed and submitted to mobile unit 104 by a trainer, coach or the athlete. The training path may be any length and last any amount of time. Preferably, the training path lasts long enough and includes several types of motions associated with various athletic skills, so that mobile unit 104 has enough data to analyze the performance of athlete 102.

[0140] During a second step 1504, mobile unit 104 preferably monitors athlete 102. This step may be similar to, and comprise many steps such as those discussed in the previous embodiments with respect to determining the athlete's location, speed, the location of mobile unit 104 as well as storing this information. In particular, second step 1504 may incorporate all or some of steps 1106, 1108, 1110, 1112 and 1116, associated with a previous embodiment and illustrated in FIG. 11.

[0141] At a predetermined point in the training session, mobile unit 104 preferably proceeds to third step 1506. During this step 1506, mobile unit 104 may analyze some or all of the data associated with the motion of athlete 102. For example, mobile unit 104 may determine the top linear speed, top lateral speed, as well as top linear and lateral accelerations achieved by athlete 102. In some embodiments, mobile unit 104 may further process this information using various types of pattern recognition algorithms as are commonly known in the field of machine learning, including, but not limited to clustering algorithms, neural network algorithms, genetic algorithms, linear discriminant algorithms, Monet Carlo algorithms, Markov Chain algorithms, as well as other types of algorithms.

[0142] FIG. 16 is a flow chart of a preferred embodiment of the sub-processes associated with third step 1506. During sub-step 1602, the performances of athlete 102 with respect to each different athletic skill may be determined. In other words, the top linear speed, top turning speed and the top linear acceleration of athlete 102 may be determined, as well as results for other athletic skills. Following sub-step 1602, mobile unit 104 may proceed to sub-step 1604.

[0143] Preferably, during sub-step 1604, the results of athlete 102 associated with different athletic skills are ranked. In some embodiments, this ranking may be relative. In other words, mobile unit 104 may determine which athletic skills athlete 102 is better at and which athletic skills athlete 102 is worse at, when considering only the performance results of athlete 102. For example, if athlete 102 has a right turning speed of 7 meters per second and a left turning speed of 8 meters per second, mobile unit 104 may rank the athlete's performance in right turning speed as better than the performance in left turning speed. In this case, mobile unit 104 preferably moves to from sub-step 1604 sub-step 1606.

[0144] In other embodiments, mobile unit 104 may include a set of pre-programmed values that may be compared with the results achieved by athlete 102. For example, a trainer or coach may want athlete 102 to be able to run a minimum of 8 meters per second, or 100 meters in 10 seconds. Therefore, mobile unit 104 may use this information to rank the linear speed of an athlete depending on how the athlete's linear speed compares with the linear speed expected by the coach. In this case, mobile unit 104 preferably proceeds from sub-step 1604 to sub-step 1608.

[0145] Finally, mobile unit 104 preferably proceeds to sub-step 1610 by way of either sub-step 1606 or sub-step 1608. During sub-step 1610, mobile unit 104 preferably selects one or more of the weaknesses of athlete 102, based on either relative or absolute ranking of the results for each athletic skill.

[0146] Referring back to FIG. 15, mobile unit 104 may proceed to fourth step 1508, following third step 1506. During fourth step 1508, mobile unit 104 may create a new training path based on one or more of the weaknesses of athlete 102.

[0147] FIG. 17 is a preferred embodiment of mobile unit 104 once it has completed first training path 1702 and determined one or more weaknesses of athlete 102 as athlete 102 moves along chasing path 1703. Second path 1704, third path 1706 and fourth path 1708 represent possible training paths that may be selected by mobile unit 104. In this embodiment, second path 1704 includes left banking portion 1705, and therefore second path 1704 may be useful in training an athlete with poor left banking speed. Third path 1706 is a straight linear path, and therefore may be most useful in training an athlete with poor linear speed. Fourth path 1708 includes short lateral portions 1709, and therefore may be useful in training an athlete with poor lateral speed and/or turning speed.

[0148] In another embodiment, seen in FIG. 18, mobile unit 104 may select a more sophisticated training path to stress the weaknesses of athlete 102. In this embodiment, future training path 1802 preferably includes first linear portion 1804, second linear portion 1806 and third linear portion 1808, as well as lateral portion 1810 and banking portion 1812. Path 1802 may be useful in training an athlete with deficiencies in linear speed and banking speed.

[0149] Preferably, mobile unit 104 continues to learn the strengths and weaknesses of athlete 102 during the entire training session. In some embodiments, mobile unit 104 may generate additional training paths, without end, with each training path based on deficiencies learned by monitoring athlete on previous paths. For example, in FIG. 19, mobile unit 104 may start with first path 1902, that is generated randomly. Following this, mobile unit 104 learns the weaknesses of athlete 102, using the methods and processes described in earlier embodiments, and generates second path 1904 to stress these weaknesses. Once mobile unit 104 has reached the end of second path 1904, it may re-evaluate the performance of athlete 102 and determine a next training path 1906, to stress weaknesses learned during execution of first path 1902 and second path 1904.

[0150] In an alternative embodiment, mobile unit 104 may be configured to chase athlete 102, rather than be chased by athlete 102. In such embodiments, mobile unit 104 will not predetermine possible training paths or receive a fixed training path, but rather will adjust its motion according to the motions of athlete 102. For example, mobile unit 104 may be provided with motion and proximity sensors. As athlete 102 moves, the motion sensors can track the vector of athlete 102. Proximity sensors allow mobile unit 104 to adjust its speed if athlete 102 moves more than a specified distance away from mobile unit 104.

[0151] While various embodiments of the invention have been described, the description is intended to be exemplary, rather than limiting and it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible that are within the scope of the invention. Accordingly, the invention is not to be restricted except in light of the attached claims and their equivalents. Also, various modifications and changes may be made within the scope of the attached claims.