Data delivery using acoustic transmissions
First Claim
1. An apparatus comprising a transmitter configured to:
- receive a first signal to be transmitted to a device within an area covered by an audio system configured to emit acoustic signals into the area;
map the first signal to a set of symbols to generate a sequence of symbols corresponding to the first signal;
add a pilot sequence to the sequence of symbols;
modulate a carrier frequency using the sequence of symbols to generate a second signal in an acoustic band that carries the first signal; and
transmit the second signal to the audio system.
1 Assignment
0 Petitions
Accused Products
Abstract
Systems, methods, and computer program products for delivering information to an individual, group, or device. The information is carried by audio signals beyond the audible frequency range of human hearing, but within the frequency range of an audio system. The information is modulated onto an ultrasonic frequency and embedded into an audio signal transmitted by the audio system. Each individual, group member, or device may have or be coupled to a receiver configured to receive an acoustic signal transmitted by the audio system that includes the modulated ultrasonic frequency. The receiver extracts the information from the modulated ultrasonic frequency and provides the information to the individual, group member, or device.
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Citations
21 Claims
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1. An apparatus comprising a transmitter configured to:
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receive a first signal to be transmitted to a device within an area covered by an audio system configured to emit acoustic signals into the area; map the first signal to a set of symbols to generate a sequence of symbols corresponding to the first signal; add a pilot sequence to the sequence of symbols; modulate a carrier frequency using the sequence of symbols to generate a second signal in an acoustic band that carries the first signal; and transmit the second signal to the audio system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method comprising:
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receiving a first signal to be transmitted to a device within an area covered by an audio system configured to emit acoustic signals into the area; mapping the first signal to a set of symbols to generate a sequence of symbols corresponding to the first signal; adding a pilot sequence to the sequence of symbols; modulating a carrier frequency using the sequence of symbols to generate a second signal in an acoustic band that carries the first signal; and transmitting the second signal to the audio system. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A computer program product comprising:
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a non-transitory computer-readable storage medium; and program code stored on the non-transitory computer-readable storage medium that, when executed by one or more processors, causes the one or more processors to; receive a first signal to be transmitted to a device within an area covered by an audio system configured to emit acoustic signals into the area; map the first signal to a set of symbols to generate a sequence of symbols corresponding to the first signal; add a pilot sequence to the sequence of symbols; modulate a carrier frequency using the sequence of symbols to generate a second signal in an acoustic band that carries the first signal; and transmit the second signal to the audio system.
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Specification