Hinges for multipurpose golf training aids, and more particularly, long-wearing, durable low-profile hinges for multipurpose golf training aids, and methods for manufacturing such hinges are disclosed.

A golf training aid maintains alignment of a user's vision with an orientation line during a golf swing. The golf training aid has a stand configured to be securely positioned on the ground, a front indicator, and a rear indicator offset from the front indicator. The front indicator may be pivotally adjusted to move in synchronization with the rear indicator. The front indicator may have a first vertical element and a first horizontal element. The rear indicator may have a second vertical element and a second horizontal element. The user aligns the elements of the front indicator and the rear indicator to align the orientation line with the user's line of sight. Alignment of the orientation line with the user's line of sight defines an angle of between 40° and 80° with the ground.

An operating method of an electronic device includes receiving a program including a machine learning model generated by performing machine learning using, as training data, information on a plurality of skeletons associated with a specific motion of an expert and/or a professional athlete associated with a specific sport, information on a plurality of angular velocities associated with the specific motion, and/or a plurality of pieces of evaluated information associated with the specific motion, which are accumulated in a server, from the server, and executing the program and receiving information on second angular velocity for the specific motion of a user of the electronic device from a swing practice device based on execution of the program.

A method can include determining physical characteristics of a trainee, adjusting a target zone based on the physical characteristics, adjusting one or more parameters of a delivery device based on the physical characteristics, projecting an object toward the target zone along a trajectory, and scoring a performance score of the trainee to track the object along a portion of the trajectory. A method can include projecting an object toward a target zone along a trajectory, a trainee attempting to impact the object at an appropriate location with a desired impact location of a sport tool, capturing imagery that contains the object at the appropriate location and the desired impact location of the sport tool, determining horizontal and vertical distances between the desired impact location and the object arriving at the appropriate location, and scoring a performance based on the horizontal and vertical distances.

A method can include projecting one or more objects along one or more pre-determined trajectories toward a target zone, with each having a diameter less than a diameter of a regulation table tennis ball, the trainee attempting to prevent the one or more objects from entering the target zone and scoring the ability of the trainee. A method can include displaying a first video to a trainee that explains setup for a delivery device, setting up the delivery device based on the first video, projecting an object along a pre-determined trajectory toward a target zone proximate the trainee, wherein the object has a diameter that is less than a diameter of a regulation table tennis ball, and scoring an ability of the trainee to interact with the object at the target zone.

A golf coaching system and a method thereof are disclosed. The golf coaching system may include: a swing measurement device that measures at least one of a swing trajectory and a posture change during a swing; a striking prediction device that predicts striking by measuring at least one of a ball speed, a swing speed, and a launch angle; and a data analysis server that generates coaching information based on data measured by the swing measurement device and the striking prediction device.

An image capturing apparatus is disclosed herein. More specifically, image capturing apparatus disclosed herein will be used to help a golfer properly select a golf club utilizing a high speed camera attached to a gantry apparatus capable of adjusting its own position relative to the golfer in order to capture data of a golf swing in an iron type golf club.

Disclosed are a sensing device for calculating information about a golf shot when the user hits a ball using a golf club in order to take a golf practice or play a virtual golf game using a screen golf system and a sensing method thereof, and in particular a sensing device for calculating information about a golf shot taken by a user, wherein, when acquiring and analyzing an image of a user hitting a ball using a golf club, the sensing device is configured to effectively detect the position of a feature point corresponding to the position of the golf club through analysis of the acquired image without attaching a certain characteristic marker to the golf club and to calculate various kinds of physical information about the motion of the golf club according to a golf shot using the feature point, and a sensing method using the same.

A practice alignment tool to align a golf ball and putter during practice. The alignment tool is useful for creating a repeatable/consistent aligned squared swing with all golf clubs. A preferred embodiment of the alignment tool has a substantially “L” shaped profile as well as strategically placed tee holes, notches, and markings that allow a golfer to align a golf shot to better hit a target during practice.

In general, an exercise device includes a handle having a first end and a second end. A curved member is coupled to the first end of the handle. A movable member is coupled to the curved member, with the movable member configured to travel along a length of the curved member, where the movable member has a first portion and a second portion, and the second portion is configured to move relative to the first portion. An elongate member has a first end and a second end, and the first end of the elongate member is coupled to the second portion of the movable member. A weight is coupled to the second end of the elongate member.