Audience Response System
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Accused Products
Abstract
An audience response system, an audience response keypad detection system and an audience response alert system. The audience response system includes a master unit and a plurality of RF linked keypads. The master unit includes a circuit controller that has a plurality of channel sets each of which includes two RF receiver channels, and a RF transmitter channel. Each of the keypads has a single channel set including two RF receivers, and a single RF transmitter. The detection system is arranged for detecting keypads and the alert system is arranged to issue alerts if the keypads pass into, through or out of a controlled area. The alert system can be used as a sentry system.
13 Citations
105 Claims
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1-77. -77. (canceled)
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78. An audience response system, comprising:
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a master unit including a transmitter for sending at least one master signal on at least one of a plurality of channels;
a plurality of keypads, each keypad including a transmitter for sending a keypad signal on at least one of the plurality of channels, the keypad signal sent by each keypad following the master signal in a time slot corresponding to the keypad, and two receivers for receiving the master signal on at least one of the plurality of channels;
a rebroadcast module for receiving and sending at least one of the master signal and the keypad signals; and
wherein said master unit further includes at least two receivers for receiving the keypad signals and the rebroadcast signals on the plurality of channels. - View Dependent Claims (79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94)
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95. A method of wirelessly communicating with a plurality of remote keypad units, comprising the steps of:
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receiving a vote via one or more of a plurality of remote keypad units;
sending a signal from a master unit to the plurality of keypads;
sending the vote from each of the one or more keypads in time slots determined for each of the particular keypad units;
receiving each of the votes by the master unit; and
rebroadcasting each of the votes from a rebroadcast module in the time slots after a predetermined voting time period has elapsed. - View Dependent Claims (96, 97, 98, 99, 100, 101, 102, 103, 104, 105)
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Specification