| 摘要 |
Disclosed are a method and an apparatus for enabling determination whether a football, during play of an Australian Rules Football game, has touched a goal post. The apparatus 5 includes a sound vibration detector such as a contact microphone fixed to the post surface so that sound vibration produced by substantially any impact or significant momentary contact of the football with the post during play of the football game will be registered by the sound vibration detector, and a storage means to receive signals generated by or in response to operation of the sound vibration detector and to store them as sound vibration data signals. 10 Video apparatus captures and stores video images of the football game during play of the game including images of the football in motion (including in flight, and bouncing or rolling along the ground, and being carried by a player participating in the game) during play of the football game, and display means is operative to display for viewing by an observer the video images from a time period in the game which included an incident of interest involving the 15 football being in proximity to the post. Sound vibration manifesting means (e.g. a speaker and / or video display) manifests the sound vibration information embodied in the sound vibration data signals in close synchronism with the display of video images by the display whereby the observer can compare the synchronicity and the characteristics of sound vibration information manifested with the images of the football presented by the display 20 means including images of the football when in closest proximity to the post, thereby enabling determination if the football touched the post during play of the football game. BALL SIGNAL TRAJECTORY FOOTBALL GLANCING CONTACT POINT CONTACT MICROPHONE AUDIO SIGNAL DETECTOR PADDING TRANSMITTER TO REMOTE RECEIVER Fig. 1 - |
