Invention Grant
US09306686B2 Audience response communication system 有权
观众响应通信系统

Audience response communication system
Abstract:
The present invention is directed to an audience response communication system comprising a base unit and a plurality of remote input devices. The audience response and communication system lowers the risk of undelivered data transmissions by enabling the remote input devices to sequentially transmit responses via multiple transmission channels until a vote acknowledgement message is received, or a predetermined number of attempts is made.
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