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US 2011/0237951 A1Published application
Data Transmission Via Wide Band Acoustic Channels
AssigneeInnurvation, Inc.
InventorsWilliam R. BANDY, Yuri Okunev, Wayne E. Shanks
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Abstract
Embodiments of the present invention relate to ultrasound (acoustic) data transmission systems, in particular data transmission over wide-band acoustic channels with frequency-dependant multi-path propagation. More specifically, embodiments of the invention involve increasing the bit rate in the acoustic channel by means of utilization of the entire ultrasound spectrum available for data transmission inside a human body.
Claims9
An acoustic data transmitter, comprising:
- a data buffer configured to accumulate data;
- a data splitter configured to split the accumulated data in to a plurality of data streams;
- a plurality of modulators configured to generate a plurality of modulated data signals, each modulator configured to modulate a respective data stream into a data signal according to a respective frequency band and modulation scheme;
- and
- a wide-band acoustic transducer configured to generate a wide-band acoustic signal from the plurality of modulated data signals to be propagated over an acoustic channel.
2 more elements
An acoustic data receiver, comprising:
- a wide-band acoustic transducer configured to receive a wide-band acoustic signal and transform the wide-band acoustic signal into a plurality of frequency-divided sub-band signals;
- a plurality of demodulators configured to generate a plurality of data streams, each demodulator configured to demodulate a respective sub-band signal into a data stream according to a respective frequency band and demodulation scheme;
- and
- a data combiner configured to combine the plurality of data streams into a high bit rate data stream.
1 more element
A method of modulating acoustic data, comprising:
- dividing a wide-band acoustic data channel into N sub-bands, wherein the first sub-band corresponds to a maximum echo delay and a minimum signal attenuation and the Nth sub-band corresponds to a minimum echo delay and a maximum signal attenuation, such that echo delay decreases and signal attenuation increases as sub-bands increase in frequency from the first sub-band to the Nth sub-band;
- and
- modulating data for each sub-band using an acoustic modulation scheme that is different from modulation schemes used in other sub-bands;
- and
- combining the modulated data from each sub-band into a wide-band acoustic data signal.
2 more elements
Dependencies are inferred from the claim text.