A variable-color region (106) of an information-presentation structure extends to an exposed surface (102) at a surface zone (112), normally appears along it as a principal color, and includes impact-sensitive color-change structure (132) and duration-extension structure (242). A segment (142) of the impact-sensitive color-change structure responds to an object (104) impacting the zone at an object-contact area (116) by causing an impact-dependent portion (138) of the variable-color region to temporarily appear along a print area (118) of the zone as changed color materially different from the principal color if the impact meets threshold impact criteria. The print area closely matches the object-contact area in size, shape, and location. The duration-extension structure responds to the impact by causing the impact-sensitive color-change structure to deform along an internal deformation area (288). This causes the time duration of the impact-dependent portion appearing as the changed color to be controllably extended.

A variable-color region (106) of an information-presentation structure extends to an exposed surface (102) at a surface zone (112) and normally appears along it as a principal color. An impact-dependent portion (138) of the variable-color region responds to an object (104) impacting the zone at an object-contact area (116) by temporarily appearing along a print area (118) of the zone as changed color materially different from the principal color if the impact meets threshold impact criteria. The print area closely matches the object-contact area in size, shape, and location. An image-generating controller (806) responds to the impact by causing an image-generating structure (804) to generate an image of the print area and adjacent surface extending to at least a selected location of the exposed surface if the threshold impact criteria are met. The image assists in determining how close the impact occurred to the selected surface location.

A variable-color region (106) of an information-presentation structure extends to an exposed surface (102) at a surface zone (112) and normally appears along it as a principal color. An impact-dependent portion (138) of the variable-color region responds to an object (104) impacting the zone at an object-contact area (116) by temporarily appearing along a print area (118) of the zone as changed color materially different from the principal color if the impact meets threshold impact criteria. The print area closely matches the object-contact area in size, shape, and location. The color-change time duration of the impact-dependent portion temporarily appearing as the changed color is in a duration range established prior to the impact. A controller (602) responds to both the impact and subsequent external instruction (608) by controlling the impact-dependent portion so as to adjust the color-change duration subsequent to the impact.

A variable-color region (106) of an information-presentation structure extends to an exposed surface (102) at a surface zone (112) and normally appears along it as a principal color. An object-tracking control apparatus (808) tracks movement of an object (104) over the surface. As the object impacts the zone at an object-contact area (116), an impact-dependent portion (138) of the VC region temporarily appears along a print area (118) of the zone as changed color materially different from the principal color if the impact meets threshold impact criteria and if the tracking indicates that the object is highly likely to impact the object-contact area. The print area closely matches the object-contact area in size, shape, and location. Impacts of bodies not tracked by the control apparatus substantially do not cause color change so that color change occurs substantially only for suitable impacts of the tracked object.

An open field game arrangement includes glowing targets and provides responses, such as lights and sounds, when the targets are hit.

An open field game arrangement includes glowing targets and provides responses, such as lights and sounds, when the targets are hit.

An adapter is provided. The adapter features a main body with a flat panel and a series of uniquely designed brackets for enhanced connectivity. Each bracket comprises a central plate with a connector portion, flanked by two outer plates, separated by gaps from the connector. This structure offers robust support and versatile connection capabilities, suitable for diverse applications. The adapter's innovative bracket design ensures reliable functionality and structural integrity.

An adapter is provided. The adapter features a main body with a flat panel and a series of uniquely designed brackets for enhanced connectivity. Each bracket comprises a central plate with a connector portion, flanked by two outer plates, separated by gaps from the connector. This structure offers robust support and versatile connection capabilities, suitable for diverse applications. The adapter's innovative bracket design ensures reliable functionality and structural integrity.

A system for controlling a clock device is provided. The system includes a clock device in communication with a remote computing device. The remote device is configured to adjust the time of a countdown and define an adjusted time value. The remote device communicates the adjusted time to the clock device, which automatically displays the adjusted time on a screen. The adjusted time is further communicated to a cloud server via API. The adjusted time is accessible by authorized third parties for display or broadcast. Accordingly, a user may adjust and track a countdown and may define an official time that is automatically displayed to a variety of end-users in real-time. The clock device may be positioned adjacent a competition area and may include a rigid metal frame and a flexible LED screen extending around the perimeter of the frame. The clock device may include hardware and software for processing and outputting the adjusted time to the cloud server.

An ultraviolet court-illumination system is used to light a playing court and any related equipment in a fluorescent manner. The system includes at least one playing court, a first plurality of ultraviolet (UV) court lights, a plurality of fluorescent game boundary-markers, and at least one fluorescent game fixture. The playing court is used for playing games or sports. The plurality of fluorescent game boundary-markers is superimposed onto the playing court and is used to delineate the boundaries of the playing court. The fluorescent game fixture is mounted onto the playing court and may be a net, a goal, or any other fixture used to play the sport. Each of the first plurality of UV court lights is peripherally positioned about the playing court and is used to illuminate the fluorescent game boundary-markers and the fluorescent game fixture. The first plurality of UV court lights is powered by a power source.