Method to use acoustic signals for computer communications
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United States of America Patent
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Jun 3, 2008
Issued Date -
N/A
app pub date -
Oct 1, 1999
filing date -
Oct 2, 1998
priority date (Note) -
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Abstract
A method of communicating with an electronic device, comprising: providing a computer having an audible sound receiving and generating sub-system including a microphone; transmitting from a source at least one ultrasonic acoustic signal, encoded with information to the computer; and receiving said at least one signal by said microphone, to be detected by said computer. Preferably, the ultrasonic frequency used is below 50 kHz.
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