Title:
DATA GATHERING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2011/094606
Kind Code:
A3
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.
Inventors:
ZDEBLICK MARK (US)
HUTCHISON JAMES (US)
ARNE LAWRENCE (US)
HUTCHISON JAMES (US)
ARNE LAWRENCE (US)
Application Number:
PCT/US2011/023013
Publication Date:
October 20, 2011
Filing Date:
January 28, 2011
Export Citation:
Assignee:
PROTEUS BIOMEDICAL INC (US)
ZDEBLICK MARK (US)
HUTCHISON JAMES (US)
ARNE LAWRENCE (US)
ZDEBLICK MARK (US)
HUTCHISON JAMES (US)
ARNE LAWRENCE (US)
International Classes:
A61B5/308; G16H40/67; H04B13/00
Domestic Patent References:
| WO2008152588A2 | 2008-12-18 |
Foreign References:
| US20040254435A1 | 2004-12-16 | |||
| JP2008525063A | 2008-07-17 | |||
| JP2001061799A | 2001-03-13 |
Other References:
See also references of EP 2531099A4
Attorney, Agent or Firm:
FIELD, Bret (1900 University Avenue Suite 20, East Palo Alto California, US)
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