Biosignal acquisition method and algorithms for wearable devices
AssigneeRamot at Tel-Aviv University Ltd.
InventorsAlex Bronstein, Evgeny Tsizin-Goldman
Life of this patent
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Abstract
Apparatus, including a set of N electrodes (22), configured to be located in proximity to an epidermis (24) of a subject, and to acquire signals generated by electric sources within the subject. The apparatus also includes a set of M channels, configured to transfer the signals, where M is less than N, and a switch (40), configured to select, repetitively and randomly, M signals from the N electrodes and to direct the M signals to the M channels. The apparatus further includes a processor (28), configured to activate the switch, and to receive and analyze the M signals from the M channels so as to determine respective positions of the electric sources within the subject.
Claims23
Apparatus, comprising:
- a set of N electrodes, configured to be located in proximity to an epidermis of a subject, and to acquire N respective input signals generated by electric sources within the subject;
- a set of M channels, where M is less than N;
- a switch, configured to multiply the N input signals by a quasirandom N X M matrix of ones and zeros to generate M output signals from the N electrodes, including short-circuiting selected ones of the N electrodes, and to direct the M output signals to the M channels;
- and
- a processor, configured to control the switch, and to receive and analyze the M output signals obtained from the M channels while modulating the quasirandom N×M matrix to compute, based on the output signals, respective timecourses of the electric sources within the subject.
A method, comprising:
- locating a set of N electrodes in proximity to an epidermis of a subject so as to acquire N respective input signals generated by electric sources with the subject;
- providing a set of M channels, where M is less than N;
- multiplying the N input signals by a quasirandom N×M matrix of ones and zeros, using a switch, to generate M output signals from the N electrodes, including short-circuiting selected ones of the N electrodes, and directing the M output signals to the M channels;
- and
- a processor configured for receiving and analyzing the M output signals obtained from the M channels while controlling the switch the modulate the quasirandom N×M matrix to compute, based on the output signals, respective timecourses of the electric sources within the subject.
Dependencies are inferred from the claim text.