| 摘要 |
An assembly for indicating movement of an article used in a sporting activity from a first position or orientation to a second position or orientation, the second position or orientation indicating an event during game or sports play which relates to or influences a game or sport outcome, the system comprising: a electrical circuit associated with the article and including means enabling detection of a displacement of the article responsive to a trigger event; the circuit including a power source, sensing means responsive to the trigger event and which activates an indicator allowing an observer to detect movement of the article the instant it moves to the second position. |
