A golf training aid is described that stabilizes a wrist and an elbow of a golfer during a golf swing. The golf training aid includes a flexible sleeve and an elongated rigid insert. The flexible sleeve is configured to receive the wrist and the elbow of the golfer. The elongated rigid insert is secured to the flexible sleeve. The flexible sleeve keeps the rigid insert in contact with the wrist and the elbow of the golfer so as to prevent pivoting of the wrist and pivoting of the elbow.

Embodiments of a golf club head comprising a first component and a second component that are coupled together to enclose a hollow interior are disclosed herein. The first component comprises at least a striking face, a striking face return, and a rear extension. In some embodiments, the first component also comprises a weight channel at a rear end and one or more braces that attach to the striking face return and the rear extension. The second component component comprises a crown portion, a sole toe portion, and a sole heel portion. The second component is two separate portions. The density of the second component is less than the density of the first component. In some embodiments, the first component mass is 85% to 96% of a mass of the golf club head.

Provided is a highly reliable, cost-effective scattered object collection system that can determine the correct position of each scattered object on the ground, such as a ball, and efficiently collect scattered objects by reducing unnecessary traveling of an autonomous collector. The scattered object collection system includes an autonomous collector that performs a collecting operation by picking up balls B while traveling in a work area W and a collector management unit that manages the autonomous collector. The collector management unit acquires positional information on the autonomous collector, identifies an actual position where each ball B was picked up in the work area W using the acquired positional information, and allows the autonomous collector to perform a collecting operation in a place having a high density of balls B with higher priority than a place having a low density of balls B using the identified actual positional information on each ball B.

A thumb brace comprising a glove having a thumb portion disposed between a palm side and a back side; and a pad attached to the glove and positioned proximate the base of the thumb portion on the back side of the glove such that the pad cushions a CMC joint of a user of the brace from impact.

A method of calculating an optimal effective distance and providing analysis data on the basis of wind prediction analysis data for an efficient hole strategy includes: a step (a) of collecting and storing wind analysis collection data for wind analysis in a golf course in a database of a management server through a data collector of the management server; a step (b) of analyzing wind information for each shot position in a individual course on the basis of the wind analysis collection data by means of a calculator of the management server which performs wind analysis in a golf course; and a step (c) of configuring a graphic user interface environment for wind analysis on the basis of the wind information analyzed through the step (b) by means of the calculator.

Methods, systems, and apparatus, including medium-encoded computer program products, for 3D flight tracking of objects include a method including determining a golf ball trajectory based on observations by sensor(s), extrapolating the trajectory backward in time, calculating distance measure(s) between the extrapolated trajectory and physical locations, estimating a systemic error for observation(s), wherein the systemic error affects observed ball positions, estimating a stochastic error associated with the observation(s), wherein the stochastic error affects an angle of a trajectory determined from observed ball positions, combining the estimated systemic and stochastic errors to form error measure(s) for the distance measure(s), identifying one of the physical locations as an origin for the golf ball when the error measure(s) satisfy a criterion, and waiting for additional observations of the golf ball by the sensor(s) when the error measure(s) do not satisfy the criterion.

A method of predicting the likelihood of a post tee off golf swing or consecutive swings resulting in a ball being sunk in a hole; the method utilizing communication equipped cameras or communication equipped laser rangefinders at known locations to determine accurate ball lie information. Transmission of this location information in real time to a processing facility linked to a database of historical play information incorporating at least ball position information and golf course in order to calculate odds of success of the upcoming swing and/or subsequent swings.

Audio systems and methods for obtaining location information are disclosed. A portable, wireless speaker that may include a beacon that a user may activate to remotely trigger a request for shot information, which may include location information of the user or speaker. The beacon may be wirelessly coupled to the speaker. The speaker may receive location information from a remote device, such as a GPS-enabled mobile phone. The shot information may be converted into an audio format for playback by the speaker. The speaker may pause the playback of the speaker to play out the shot information.

A positioning system includes a golf ball and a mobile terminal. The golf ball includes a battery and a transmitter configured to operate with electric power supplied from the battery and transmit a radio signal to outside of the golf ball. The mobile terminal includes a receiver configured to receive the radio signal from the golf ball and a processor configured to measure the position of the mobile terminal, and to measure the position of the golf ball based on the strength of the radio signal received by the receiver at two or more points at which the measured position of the mobile terminal differs.

A handgrip for placement about an elongated member is disclosed. The handgrip includes a resilient body member having an arcuate gripping surface adapted to conform to the outer surface of the elongated member. A plurality of outwardly extending curvilinear projections are adapted to conform to the shape of a hand of a user. A finger engaging member extends from the resilient body member. The finger engaging member is adapted to retain the handgrip on the hand of a user after the elongated member is released.