Active signal processing personal health signal receivers
First Claim
Patent Images
1. A signal receiver comprising:
- a demodulator configured to;
receive an encoded signal associated with an in vivo transmitter, the encoded signal comprising information about a frequency of the encoded signal, in a power spectrum of the encoded signal, where a maximum amplitude of the encoded signal occurs;
tune to the frequency;
adapt to frequency variations of the encoded signal; and
generate a reconstructed encoded signal locked in frequency and phase to the encoded signal; and
a symbol recovery component configured to;
receive the reconstructed encoded signal;
determine a signal clock and phase of the reconstructed encoded signal;
identify a start sequence in the reconstructed encoded signal; and
decode the reconstructed encoded signal with substantially no error.
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Abstract
The invention provides a receiver associated with a body, e.g., located inside or within close proximity to a body, configured to receive and decode a signal from an in vivo transmitter which located inside the body. Signal receivers of the invention provide for accurate signal decoding of a low-level signal, even in the presence of significant noise, using a small-scale chip, e.g., where the chip consumes very low power. Also provided are systems that include the receivers, as well as methods of using the same.
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Citations
35 Claims
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1. A signal receiver comprising:
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a demodulator configured to; receive an encoded signal associated with an in vivo transmitter, the encoded signal comprising information about a frequency of the encoded signal, in a power spectrum of the encoded signal, where a maximum amplitude of the encoded signal occurs; tune to the frequency; adapt to frequency variations of the encoded signal; and generate a reconstructed encoded signal locked in frequency and phase to the encoded signal; and a symbol recovery component configured to; receive the reconstructed encoded signal; determine a signal clock and phase of the reconstructed encoded signal; identify a start sequence in the reconstructed encoded signal; and decode the reconstructed encoded signal with substantially no error. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A method of transmitting data from an in vivo transmitter to a body associated receiver sized to be stably associated with a living subject in a manner that does not substantially impact movement of the living subject, the method comprising:
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receiving, by a demodulator, an encoded signal associated with an in vivo transmitter, the encoded signal comprising information about a frequency, in a power spectrum of the encoded signal, where a maximum amplitude of the encoded signal occurs; tuning the demodulator to the frequency; adapting the demodulator to frequency variations of the encoded signal; and generating by the demodulator a reconstructed encoded signal locked in frequency and phase to the encoded signal; and receiving, by a symbol recovery component, the reconstructed encoded signal; determining, by the symbol recovery component, a signal clock and phase of the reconstructed encoded signal; identifying, by the symbol recovery component, a start sequence in the reconstructed encoded signal; and decoding, by the symbol recovery component, the reconstructed encoded signal with substantially no error. - View Dependent Claims (28, 29, 30)
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31. A signal receiver comprising:
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a demodulator configured to; receive an encoded signal associated with an in vivo transmitter, the encoded signal comprising information about a frequency of the encoded signal, in a power spectrum of the encoded signal, where a maximum power of the encoded signal occurs; tune to the frequency; adapt to frequency and power variations of the encoded signal; and generate a reconstructed encoded signal locked in frequency and phase to the encoded signal; and a symbol recovery component configured to; receive the reconstructed encoded signal; determine a signal clock and phase of the reconstructed encoded signal; identify a start sequence in the reconstructed encoded signal; and decode the reconstructed encoded signal with substantially no error. - View Dependent Claims (32, 33, 34, 35)
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Specification