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WO2010098570A2 - Dispositif pour fournir des informations concernant une frappe de golf - Google Patents

Dispositif pour fournir des informations concernant une frappe de golf Download PDF

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Publication number
WO2010098570A2
WO2010098570A2 PCT/KR2010/001135 KR2010001135W WO2010098570A2 WO 2010098570 A2 WO2010098570 A2 WO 2010098570A2 KR 2010001135 W KR2010001135 W KR 2010001135W WO 2010098570 A2 WO2010098570 A2 WO 2010098570A2
Authority
WO
WIPO (PCT)
Prior art keywords
golf swing
information
time
user
swing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2010/001135
Other languages
English (en)
Korean (ko)
Other versions
WO2010098570A3 (fr
Inventor
곽종석
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BUFFALO COMPANY Ltd
Original Assignee
BUFFALO COMPANY Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BUFFALO COMPANY Ltd filed Critical BUFFALO COMPANY Ltd
Publication of WO2010098570A2 publication Critical patent/WO2010098570A2/fr
Publication of WO2010098570A3 publication Critical patent/WO2010098570A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A63B60/46—Measurement devices associated with golf clubs, bats, rackets or the like for measuring physical parameters relating to sporting activity, e.g. baseball bats with impact indicators or bracelets for measuring the golf swing
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B69/00—Training appliances or apparatus for special sports
    • A63B69/36—Training appliances or apparatus for special sports for golf
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B57/00—Golfing accessories
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
    • A63B71/06—Indicating or scoring devices for games or players, or for other sports activities
    • A63B71/0619—Displays, user interfaces and indicating devices, specially adapted for sport equipment, e.g. display mounted on treadmills
    • A63B2071/0658—Position or arrangement of display
    • A63B2071/0661—Position or arrangement of display arranged on the user
    • A63B2071/0663—Position or arrangement of display arranged on the user worn on the wrist, e.g. wrist bands
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2220/00—Measuring of physical parameters relating to sporting activity
    • A63B2220/62—Time or time measurement used for time reference, time stamp, master time or clock signal
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2220/00—Measuring of physical parameters relating to sporting activity
    • A63B2220/80—Special sensors, transducers or devices therefor
    • A63B2220/83—Special sensors, transducers or devices therefor characterised by the position of the sensor
    • A63B2220/836—Sensors arranged on the body of the user
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
    • A63B71/06—Indicating or scoring devices for games or players, or for other sports activities
    • A63B71/0619—Displays, user interfaces and indicating devices, specially adapted for sport equipment, e.g. display mounted on treadmills
    • A63B71/0669—Score-keepers or score display devices

Definitions

  • the present invention relates to a golf swing information device, and more particularly, to provide golf swing information on the golf swing of the user by measuring the time required for each step of the golf swing of the user, according to the golf swing information, the user is more optimal
  • a golf swing information device for guiding a golf swing form or tempo is more optimal
  • the eight stages of the golf swing include the ADDRESS stage, the TAKE AWAY stage, the BACK SWING stage, the TOP OF THE SWING stage, the DOWN SWING stage, and the IMPACT stage. Step, FOLLOW THROUGH step, and FINISH step.
  • the ADDRESS step is ready before hitting the ball.
  • the club face should be perpendicular to the direction of travel and the shoulder and chest pelvis should be parallel to the acetabular line.
  • the take away step is to begin a swing. Start by moving the clubhead by hand. The order moves in the order of hand shoulder waist leg. So, holding the club to the right waist level, the club shaft is parallel to the aspheric line, and the club face remains slightly closed.
  • the BACK SWING step means from the take back to the top swing. Caulking begins as the take-away moves progress, and the shoulders and hips come together as one turn. During the half-back swing, his left arm should be parallel to the goal, and the angle of the club and left hand should be 90 degrees L.
  • the TOP OF THE SWING phase is the posture that the club will continue to rise and stop after takeback, ie ready to hit the ball.
  • the left arm is extended and the right arm is slightly bent.
  • the shaft of the club In the top swing, the shaft of the club must be perpendicular to the forearm of the right arm, and the club shaft must be parallel to the target direction, not to the left to the right.
  • the focus should be on the left shoulder as it passes the ball to the right foot so that the weight can be correctly shifted.
  • Downswing means the time before hitting the ball from the top of the backswing. During the downswing the angle of the left arm forearm and club shaft should remain constant without loosening. The right foot should begin to fall slowly from the ground inward to the target direction and should move weight. If you try to force your downswing or try to hit too hard, the club may be thrown prematurely, resulting in thick shots or miss shots, which can also have a negative impact on distance loss.
  • the IMPACT stage is the moment you hit the ball.
  • the caulking of the wrist just before impact is released by the clubhead just before the ball, at which point the club can be at its maximum speed.
  • the end of the club should face the navel, the head behind the ball, the left arm and the shaft parallel, and the left foot straight.
  • the right foot should be away from the ground inward to the target and almost all weight should be shifted to the left foot. This is a powerful and correct impact.
  • the left leg should be straightened not only because it opens the space for follow-through rotation after impact, but also because the body and the club become one to create a powerful impact.
  • the FOLLOW THROUGH step means that the clubhead is about to go forward after impact, but the head is held behind and the arm is naturally stretched due to centrifugal force. After impacting the ball, a natural release should be maintained.
  • the right hand above the left hand means that the club head is naturally loosened. After impact, the follower should keep the arms and club triangles as far as possible and throw them largely towards the target.
  • the finish phase is when the swing stops after the follow throw.
  • the finish is a full turn hip and shoulders, with the club naturally behind the head. The eyes look at the target, and the right foot falls off the ground and attaches to the left thigh. All weights are on your left foot and are in balance. If you've made the right swing, your hand on the finish can be about 6-8 inches from your shoulder. If your hands are too close or too far away from your shoulders, this is evidence of a poor swing. A good balanced finish means that your swing is done correctly.
  • golf is a motion that is sensitive to the posture of each step of the swing.
  • the tempo also acts as an important factor, in particular, it is important to adjust the tempo of the time corresponding to the back swing step and the time corresponding to the down swing step.
  • the present invention has been made to improve the prior art as described above, by providing the golf swing information for the golf swing of the user through the measurement of the time required for each step of the golf swing of the user, according to the golf swing information
  • An object of the present invention is to provide a golf swing information device for guiding a golf swing to maintain an optimum golf swing form or tempo.
  • the button unit including one or more input buttons; Sensor unit for sensing the time required for one or more golf swing step for the user's golf swing when receiving the input from the button unit; A golf swing information unit for generating golf swing information on a user's golf swing through the time required for one or more golf swings; And a golf swing information output unit for displaying or playing the golf swing information to the user.
  • the sensor unit of the golf swing information device the time required for the back swing (BACK SWING), the time of TOP OF THE SWING, the down swing (DOWN) SWING) time required, and finish (FINISH) time is sensed, respectively, and the golf swing information unit takes the first-first including the time required to backswing and top of swing when the first input from the user through the button unit And generating first golf swing information including time information and 1-2 time required information including down swing required time and finish required time.
  • the golf swing information output unit of the golf swing information device provides the first golf swing information to the user, and when the user receives feedback on the first golf swing information through the button unit, the user It provides a user with the elapsed alarm of the 1-1 time required and the elapsed alarm of the 1-2 time during the golf swing.
  • the golf swing information output unit of the golf swing information device is the time required for the backswing and top of swing during the golf swing step of the user performed after receiving the feedback of the first golf swing information 1-1 time information matches within the predetermined error range, and the time required for downswing and finish during the user's golf swing phase matches the 1-2 time required information within the predetermined error range If so, characterized in that to provide the user with the selected message.
  • the sensor unit of the golf swing information device the time required for the back swing (BACK SWING), the time of TOP OF THE SWING, the down swing (DOWN) SWING) time required, and finish time (FINISH) is sensed, respectively, and the golf swing information unit, when receiving a second input from the user via the button, the second time information, including the time required backswing, top of swing And a second golf swing information including the 2-3 time required information including the required time, and 2-3 required time information including the down swing required time and the finish required time.
  • the golf swing information output unit of the golf swing information device provides the second golf swing information to the user, and when the user receives feedback on the second golf swing information through the button unit, the user It provides a user with the elapsed alarm of the 2-1 time required, the elapsed alarm of the 2-2 time required, and the elapsed alarm of the 2-3 time required during the golf swing.
  • the golf swing information output unit of the golf swing information device takes the time 2-1 to the backswing during the golf swing step of the user performed after receiving the feedback of the second golf swing information
  • the time information coincides with the predetermined error range
  • the time required for the top of swing coincides with the 2-2 time required information with the selected error range
  • the time required for the downswing and finish is 2-second. 3
  • the required time is matched within the selected error range, it is characterized by providing a selected message to the user.
  • the golf swing information device is characterized in that implemented as a wrist watch.
  • the sensor unit of the golf swing information device is characterized in that it comprises any one or more of a tilt sensor, a gyro sensor, an acceleration sensor, and a wind pressure sensor.
  • the golf swing information device further includes a speed measuring sensor attached to the golf club of the user senses the impact speed of the moment the golf club hits the golf ball, the golf swing information unit to the impact speed It is characterized by generating a golf swing information to include.
  • the speed measurement sensor of the golf swing information device transmits the impact speed data to the golf swing information device through a short-range wireless communication
  • the speed measurement sensor and the golf swing information is Bluetooth (Bluetooth)
  • Bluetooth Bluetooth
  • the golf swing information device further comprises a GPS module for detecting the current location of the user, the golf swing information unit is predetermined the real-time current location of the user detected through the GPS module The location information displayed through the golf course graphic is generated, and the golf swing information output unit provides the location information to the user in real time.
  • the position information of the golf swing information device is characterized in that it includes distance information from the current position of the user to the target hole (hole).
  • the user can recognize the time required for each step of his golf swing in real time, thereby obtaining the effect of allowing the user to maintain the optimum golf swing form or tempo Can be.
  • FIG. 1 is a block diagram showing the configuration of a golf swing information device according to an embodiment of the present invention.
  • FIG. 2 is a view showing the appearance of a golf swing information device implemented in a wristwatch type according to an embodiment of the present invention.
  • FIG. 1 is a block diagram showing the configuration of a golf swing information device according to an embodiment of the present invention.
  • Golf swing information device 100 is a button unit 110, sensor unit 120, golf swing information unit 130, golf swing information output unit 140, GPS module 150, And a near field communication module 160.
  • the golf swing information device 100 may further include a speed measurement sensor 170.
  • the button unit 110 includes one or more input buttons.
  • the button unit 110 may include a setting button, a swing button, a vibration button, a GPS button, a volume button. It may include. Each input button will be described later with reference to FIG. 2.
  • the sensor unit 120 When the sensor unit 120 receives an input of a button unit from the user, the sensor unit 120 senses the time required for each or more golf swing stages of the user's golf swing. That is, the sensor 120, the user's golf swing time, the time of back swing (BACK SWING), the time of TOP OF THE SWING, the time of down swing (DOWN SWING), and the time required for finish (FINISH) Each can be sensed.
  • the sensor unit 210 includes at least one of a tilt sensor, a gyro sensor, and a wind pressure sensor. That is, the sensor unit 210 may sense the time required for one or more golf swing stages for the user's golf swing through a tilt sensor, a gyro sensor, or a wind pressure sensor.
  • the sensor unit 120 may be implemented to include various types of sensors capable of sensing the time required for one or more golf swing stages in addition to the tilt sensor, the gyro sensor, and the wind pressure sensor.
  • the speed measurement sensor 170 may be attached to the golf club of the user to sense the impact speed at the moment the golf club hits the golf ball.
  • the speed measuring sensor 170 may be included as a part of the sensor unit 210. In this case, the speed measurement sensor 170 may measure the impact speed of the golf club from the speed applied to the wrist of the user at the moment the golf club hits the golf ball.
  • the speed measurement sensor 170 may be separately attached to the head of the golf club to measure the impact speed, or may be implemented as a part of the sensor unit 210 to measure the impact speed from the speed applied to the user's wrist. It may be implemented in various forms according to the judgment of those skilled in the art. However, in the present specification, for convenience of description, the speed measuring sensor 170 is separately attached to the head of the golf club to measure the impact speed as an example.
  • the golf swing information device may provide a "1-2 tempo” function and a "1-2-3 tempo” function to adjust the tempo between each swing step.
  • the 1-2 tempo function may be implemented as a function for adjusting the tempo between the time from the backswing to the top of the swing and the time from the downswing to the finish.
  • the sensor unit 120 When receiving the 1-2 tempo function from the user through the button unit 110, the sensor unit 120, the time required for the back swing (BACK SWING), the top of the swing (TOP OF THE SWING) ) Sensing time, downswing time and finish time respectively.
  • the golf swing information unit 130 is composed of the first-first time information including the time required for the backswing and the time of the top of the swing, and the 1-2 time required information including the time required for the downswing and the finish time. Generate first golf swing information. That is, the first golf swing information may be provided when the user inputs a 1-2 tempo function. Accordingly, the user recognizes how much the time taken from the back swing to the top of the swing and the time taken from the down swing to the finish and the difference between each other is determined by the first golf swing information. Can be corrected.
  • the user may input feedback on the first golf swing information through the button unit 110. Can be.
  • the golf swing information output unit 130 may provide the user with the elapsed alarm of the 1-1 time required and the elapsed alarm of the 1-2 time at the next golf swing of the user. Accordingly, the user can be guided to maintain the optimal golf swing sensation previously performed even during the next golf swing.
  • the golf swing information output unit 130 is predetermined with the time required for the backswing and the top of the swing during the golf swing step of the user performed after receiving the feedback of the first golf swing information. ) Within the margin of error, and if the time taken for downswing and finish during the golf swing phase of the user matches within the predetermined error range with the 1-2 time required information, the user may provide a selected message. Can be.
  • the message may be implemented in various forms such as vibration, alarm signal, flashing lamp, voice (for example, "nice shot”), and graphics.
  • the 1-2-3 tempo function may be implemented as a function for adjusting the tempo between the time required for the backswing, the time of the top of the swing, and the time from the downswing to the finish.
  • the golf swing information unit 130 includes a 2-1 time required information including a time required for a backswing, a 2-2 time required information including a required time of a top of swing, and a second time required to include a downswing time and a finish required time. Second golf swing information including 2-3 time information is generated.
  • the second golf swing information may be provided when the user inputs a 1-2-3 tempo function. Accordingly, the user is aware of how much time is required to take the backswing, the time of the backswing, the time of the top of the swings, the time from the downswing to the finish, and how the difference is different from each other. Can be calibrated to optimal foam
  • the user may input feedback on the second golf swing information through the button unit 110.
  • the golf swing information output unit 130 the user of the elapsed alarm of the 2-1 time required, the elapsed alarm of the 2-2 time required, and the elapsed alarm of the 2-3 time required for the next golf swing of the user.
  • the golf swing information output unit 130 takes the time required for the backswing during the golf swing step of the user performed after receiving the feedback of the second golf swing information to within the predetermined time range of the 2-1 time information and the predetermined (predetermined) error range.
  • the time required for the top of the swing matches the 2-2 time required information within the selected error range, and the time required for the downswing and finish matches the 2-3 time required within the selected error range.
  • the user may provide a selected message.
  • the message may be implemented in various forms such as vibration, alarm signal, flashing lamp, voice (for example, "nice shot"), and graphics.
  • the 1-2 tempo function and the 1-2-3 tempo function have been described as an example, but this is merely an exemplary embodiment for convenience of description, and the tempo in various forms using the time required for each step of the golf swing. It can be apparent to those skilled in the art that the function can be implemented.
  • the GPS module 150 detects the current location of the user.
  • the golf swing information unit 130 may generate location information displayed through a golf course graphic in which a user's real time current position detected by the GPS module is predetermined. To this end, the golf swing information unit 130 may maintain one or more golf course graphic data, and real-time location information of the user displayed through the golf course graphic may be displayed to the user through the golf swing information output unit 140.
  • the location information may be implemented to include distance information to a hole targeted by the user.
  • the speed measurement sensor 170 may be attached to the golf club of the user to sense the impact speed at the moment the golf club hits the golf ball. That is, the speed measuring sensor 100 may be implemented to be attached to the golf club in a configuration independent of the golf swing information device 100. For example, if the golf swing information device 100 is implemented with a watch, speed
  • the golf swing information unit 130 may generate golf swing information including an impact speed to provide the impact speed to the user through the golf swing information output unit 140.
  • the speed measurement sensor 170 may transmit the impact speed data to the short range communication module 160 of the golf swing information device 100 through short range wireless communication.
  • the speed measurement sensor 170 may also include a short range communication module, and the short range communication module may be implemented as any one of a Bluetooth module, a Zigbee module, an infrared (IrDA) module, and a UWB module. have.
  • FIG. 2 is a view showing the appearance of a golf swing information device implemented in a wristwatch type according to an embodiment of the present invention.
  • the wristwatch-type golf swing information device 200 may be implemented as a part of the wristwatch as shown in FIG.
  • the wristwatch-type golf swing information device 200 includes a swing button 210, a setting button 220, a vibration button 230, a GPS button 240, and a volume button 250. Include.
  • the initial screen of the watch-type golf swing information device 200 may be implemented in a watch state in which a date and time are displayed.
  • the user When the user presses and sets the setting button 220, the user may return to the clock state.
  • the user presses the swing button 210 once the 1-2 tempo function may be performed on the screen, and when the swing button 210 is pressed twice, the 1-2-3 tempo function may be performed.
  • the screen may display the time required for each swing of the swing and the impact speed. If it is determined that the impact speed and swing tempo that are considered to be the most ideal after the swing are out, the user may press the setting button 220 to store the impact speed and swing tempo for the swing. Whenever the swing tempo is considered to be the optimal swing tempo while continuing to practice the swing, the most recently input swing tempo information may be input in the vibration mode or the voice mode.
  • a screen indicating only the GPS coordinates and the moving speed may be displayed on the leisure screen, and when the user presses the GPS button 240 twice, the screen is switched to the field, and a flag icon flashes on the green to the hole.
  • the distance can be displayed. If you swing immediately after being notified of the distance to the next hole, the impact speed and swing time for the swing can be displayed on the screen automatically. That is, when swinging in the GPS mode, the same operation as pressing the swing button 210 may be performed without additional manipulation.
  • the vibration button 230 When the vibration button 230 is briefly pressed once, the time required for each step of the swing input as two optimal swing tempos is displayed, and vibration may be started according to a 1-2 tempo function or a 1-2-3 tempo function.
  • the voice mode When vibrating, the voice mode may be implemented to listen to the voice as well.
  • the golf club on the screen can indicate the vibration mode through the icon that can move according to time, and can be implemented to vibrate as much time while blinking the time required for each step of the screen. That is, the user may be implemented to listen to the tempo by voice and feel the vibration on the wrist while viewing the icon visually.
  • the volume button 250 may be implemented to be set after checking the size on the screen, such as adjusting the volume of the mobile phone, and may be implemented to make no sound when adjusted to the minimum.
  • voice functions such as a nice shot may also be implemented.
  • the voice mode for accurately outputting the swing tempo input in the optimal state by the swing button 210 according to the 1-2 tempo mode or the 1-2-3 tempo mode may be implemented. Long press the vibration button 230 may be switched to the swing track (Swing Track) mode.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Electric Clocks (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)

Abstract

L'invention concerne un dispositif fournissant des informations concernant une frappe de golf. Dans un mode de réalisation, le dispositif de l'invention comprend: une unité bouton comportant un ou plusieurs boutons d'entrée; une unité de détection qui détecte la durée de chaque étape de la frappe de golf nécessaire à un golfeur, lorsque des données d'entrée sont entrées par un utilisateur à l'aide du bouton; une unité de production d'informations concernant la frappe de golf qui produit des informations concernant la frappe pour l'utilisateur sur la base de la durée nécessaire à chaque étape de la frappe; et une unité de sortie d'informations concernant la frappe de golf qui affiche ou reproduit les informations concernant la frappe de golf pour l'utilisateur.
PCT/KR2010/001135 2009-02-26 2010-02-24 Dispositif pour fournir des informations concernant une frappe de golf Ceased WO2010098570A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020090016400A KR100926138B1 (ko) 2009-02-26 2009-02-26 골프스윙 정보 디바이스
KR10-2009-0016400 2009-02-26

Publications (2)

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WO2010098570A2 true WO2010098570A2 (fr) 2010-09-02
WO2010098570A3 WO2010098570A3 (fr) 2010-11-25

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KR101288348B1 (ko) 2011-07-01 2013-07-22 고성호 헤드업 방지용 골프 자세 교정장치 및 방법
KR101441495B1 (ko) * 2013-03-28 2014-09-17 김종문 가속도센서를 가지는 손목시계형 스윙 측정기와 상기 스윙 측정기의 특징 움직임 추출을 이용한 자동구동방법
KR102328277B1 (ko) 2020-07-20 2021-11-19 홍명기 골프스윙 알림장치
KR102077972B1 (ko) 2019-09-26 2020-02-14 홍명기 골프스윙 알림장치
KR102138489B1 (ko) 2020-01-15 2020-07-27 홍명기 골프스윙 알림장치
KR102657589B1 (ko) * 2022-01-28 2024-04-15 주식회사 브이씨 샷 정보를 제공하는 전자 디바이스 및 그 제어 방법

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JPH1043347A (ja) * 1996-08-08 1998-02-17 Yoshikazu Nakamura 腕角度検出手段及びゴルフスイング練習装置
KR20000004852A (ko) * 1998-06-16 2000-01-25 김철규 골프스윙 보조장치
US20040214651A1 (en) * 2003-04-28 2004-10-28 Glenn Park Golf swing training device
KR100565946B1 (ko) * 2004-02-10 2006-03-29 정대훈 골프스윙 연습용 시계 및 그 제어방법

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KR100926138B1 (ko) 2009-11-10
WO2010098570A3 (fr) 2010-11-25

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