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    • 4. 发明授权
    • System for communication using a broadcast audio signal
    • 使用广播音频信号进行通信的系统
    • US5213337A
    • 1993-05-25
    • US215655
    • 1988-07-06
    • Robert Sherman
    • Robert Sherman
    • A63F13/02A63F13/06
    • A63F13/424A63F13/02A63F13/06A63F13/25A63F2300/409
    • This invention involves a system of communicating information using audio signals. In one embodiment, the information is encoded in touch tones on the sound track of a television game show. The information relates to the action of the show, and is broadcast in-band with the audio portion of the show. The show, and thus the information encoded in its audio portion, is received by an ordinary home television. A device for playing a game "listens" to the television speaker and decodes the information. The device allows home viewers to play a game based on the action of the show. The touchtones are substantially indiscernible to humans because they are quieter than most of the audio portion of the show, they are very brief, and they are masked by the show's usual sound effects.
    • 本发明涉及使用音频信号传送信息的系统。 在一个实施例中,信息被编码在电视游戏节目的声轨上的触摸音。 该信息涉及节目的动作,并且与节目的音频部分一起进行带内广播。 该节目以及因此在其音频部分中编码的信息由普通家庭电视接收。 用于玩游戏的装置“听”到电视扬声器并解码信息。 该设备允许家庭观众根据节目的动作来播放游戏。 触摸屏对于人类来说基本上是不可理解的,因为它们比节目的大部分音频部分更安静,它们非常简短,并且它们被演出通常的声音效果掩盖。