System and method for wirelessly transmitting and receiving digital tokens for use in electronic gameplay
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United States of America Patent
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Apr 15, 2008
Grant Date -
Apr 29, 2004
app pub date -
Jun 19, 2003
filing date -
Jun 21, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A system and a method for the transmission and reception of digital data wirelessly using acoustic tones comprises a device having an encoder, a modulator system, a demodulator system, and a decoder. The modulator system uses a plurality of acoustical tones with a fundamental frequency and multiple harmonics that are amplitude modulated. The received signal is demodulated and detected by quadrature detectors comprising replicas of the acoustical tones. An extended Golay code based decoder is used for correcting errors occurring during transmission.
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