Start with the available electrodes.
FIG. 6 identifies eight active electrodes (604a-604h) and three reference electrodes (606a-606c). The electrode carrier (608) connects them with the controller (610).
Original p. 21 · [0068] ↗How an earbud chooses where to measure
The original drawing, with the controller, carrier and electrode groups explained where they appear.
Read the PDF + source pages ↗Follow the source ↓
THE PATENTORACLE READING
- 610 / Controller
The controller chooses.
It may choose an active subset and a reference subset, then perform a measurement test using both. EEG is one example.
- 608 / Electrode carrier
The carrier connects.
The hatched carrier holds the electrodes and may electrically couple them to the controller. The description names a flex or microaxial cables.
- 604a–604h / Active electrodes
Eight active electrodes.
These eight contacts form the active group shown here. The controller may select one or more; the drawing does not identify a chosen subset.
- 606a–606c / Reference electrodes
Three reference electrodes.
A reference subset is also selected. The measurement uses the selected active and reference subsets together.
Our numbered annotations identify parts on the original FIG. 6. The drawing, its geometry and its reference numbers are preserved. The explanation follows paragraphs [0068]–[0069]; no particular electrode subset is shown as selected.
Choose the subsets used for sensing.
The controller may choose one or more electrodes from each group. The description lists impedance, noise, distance between active and reference electrodes, and half-cell potentials as selection criteria.
Original p. 21 · [0069] ↗Measure using the chosen subsets.
The controller may then perform a measurement test using both selected subsets. Paragraph [0069] names EEG measurement as one example.
Original p. 21 · [0069] ↗THE QUESTION, ANSWERED
What makes this more than a fixed set of earbud electrodes?
Selection is part of the design. The controller can choose which active and reference electrodes participate in a measurement, using the criteria set out in the description. The callouts identify those parts; paragraph [0069] explains the choice before measurement.
From the diagram to the description.
Original PDF page 21, paragraphs [0068]–[0069], describes the components, selection criteria and measurement test. Open a passage to compare the wording with the preserved page.
Start with the available electrodes. · [0068]
The active electrodes 604a-604h and the reference electrodes 606a-606c may be carried by an electrode carrier 608Open original page 21 ↗
Choose the subsets used for sensing. · [0069]
The controller 610 may select one or more active electrodes 604a-604h to form a subset of active electrodesOpen original page 21 ↗
Measure using the chosen subsets. · [0069]
The controller 610 may then perform a measurement test using the selected subsets of active and reference electrodes. In one example, the measurement may be for measuring an EEG.Open original page 21 ↗
Inspect the preserved description page
US20230225659A1 · Biosignal Sensing Device Using Dynamic Selection of Electrodes · Published July 20, 2023. This is an independent explanation of the published design. Figure and source record · Complete original PDF · 24 pages
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