Dynamic incremental analog-to-digital conversion interfaces for in-ear electrophysiology
AssigneeThe Regents of the University of California
InventorsAkshay Paul, Preston Fowler, Yuchen Xu, Jun Wang, Gert Cauwenberghs
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Abstract
In some implementations, the current subject matter relates a system including an in-ear housing configured to fit in an ear of a wearer; a flexible printed circuit mounted within the in-ear housing; and an analog to digital converter comprising a neural interface system-on-chip having dynamic incremental successive-approximation register acquisition to process signals detected by at least one electrode disposed on or near a surface of the in-ear housing. Related systems, methods, and articles of manufacture are also disclosed.
Claims20
A system, comprising:
- an in-ear housing configured to fit in an ear of a wearer;
- a flexible printed circuit mounted within the in-ear housing;
- and
- an analog to digital converter comprising a neural interface system-on-chip having dynamic incremental successive-approximation register and a counter to process signals detected by at least one electrode disposed on or near a surface of the in-ear housing,
- wherein the dynamic incremental successive-approximation register comprising the counter is set, in a first cycle, to a first index value, wherein the first index value is a previous output result of the analog to digital converter.
A system comprising:
- an in-ear housing configured to fit in an ear of a wearer;
- a flexible printed circuit mounted within the in-ear housing;
- and
- an analog to digital converter comprising a neural interface system-on-chip having dynamic incremental successive-approximation register and a counter to process signals detected by at least one electrode disposed on or near a surface of the in-ear housing, wherein the at least one electrode comprises a plurality of electrodes arranged as a plurality of conductive rings positioned on the exterior surface of the in-ear housing, wherein the plurality of conductive rings are spaced, between a first end of the in-ear housing and a second end of the in-ear housing along a longitudinal axis of the in-ear housing;
- wherein the dynamic incremental successive-approximation register comprising the counter is set, in a first cycle, to a first index value, wherein the first index value is a previous output result of the analog to digital converter;
- and
- wherein in at least a second cycle, the counter is configured with a second index value, wherein until a voltage of the analog to digital converter crosses a threshold defined by an amplifier voltage, the second index value increases from the first index value by 1 and in response to the cross of the threshold, the second index value decreases by a value of 1.
A method comprising:
- detecting, by at least one electrode, signals, wherein the at least one electrode is disposed in on or near a surface of an in-ear housing, wherein the in-ear housing configured to fit in an ear of a wearer, wherein the in-ear housing is comprised in a system further including a flexible printed circuit mounted within the in-ear housing and an analog to digital converter comprising a neural interface system-on-chip having dynamic incremental successive-approximation register and a counter, wherein the dynamic incremental successive-approximation register comprising the counter is set, in a first cycle, to a first index value, wherein the first index value is a previous output result of the analog to digital converter;
- and
- converting, by the analog to digital converter comprising the neural interface system-on-chip signals, the detected signals to a digital form.
Dependencies are inferred from the claim text.