The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 13, 2019
Filed:
Mar. 11, 2015
Proteus Digital Health, Inc., Redwood City, CA (US);
Mark Zdeblick, Portola Valley, CA (US);
James Hutchison, Palo Alto, CA (US);
Lawrence Arne, Palo Alto, CA (US);
PROTEUS DIGITAL HEALTH, INC., Redwood City, CA (US);
Abstract
A device for gathering data has first and second electrodes. The first electrode is coupled to a surface of interest, and the second electrode is coupled to 'everything else' or 'the air'. The first electrode is shielded from the second, and from most sources of parasitic capacitance, by a shield that is driven by an active driver that drives the shield to track, and ideally to match, the instantaneous potential of the electrode. The second electrode is likewise shielded in a similar way from most sources of parasitic capacitance. These shields likewise help to limit the extent to which RFI from the device electronics couples with either of the electrodes. In this way the sensing device achieves a markedly better signal-to-noise ratio at frequency bands of interest.