| 摘要 |
A site broadcast apparatus of a ball game is provided to automatically total the score by detecting a ball when it passes an end line of a goal post, and display the score on an electronic display board to thus remove an argument that may be caused by naked eye identification and allow the audience to be more immersed in the game by informing about the score situation through an announcement. A ball(14) includes a sound transmission unit for converting and amplifying an ambient sound into an electric voice signal and modulating the same into a pre-set band frequency, a battery for supplying power to operate the sound transmission unit, and an electronic sensor for transmitting/receiving data at a frequency of a pre-set band. Electronic tag goal posts(16) are installed in a playground(12) and include a loop type electronic sensor antenna installed at the center of a pre-set end line and transmitting and receiving a certain signal. An electronic display board(22) is installed at a position that can be easily viewed at the seats for the audience of the playground and displays a game proceeding message or a score message. Speakers(20) are installed at positions allowing the audience to easily hear, converts an inputted electric voice signal into an audible sound and outputs the same. A receiving unit(18) transmits a score message to the electronic display board, and receives an electric voice message from the sound transmission unit and outputs it via the speakers. |
