US 9,808,199 B2
Two part EEG monitor with databus and method of communicating between the parts
Soren Kilsgaard, Smorum (DK); Preben Kidmose, Maarslet (DK); and Mike Lind Rank, Farum (DK)
Assigned to Widex A/S, Lynge (DK)
Filed by Soren Kilsgaard, Smorum (DK); Preben Kidmose, Maarslet (DK); and Mike Lind Rank, Farum (DK)
Filed on Aug. 17, 2012, as Appl. No. 13/588,483.
Application 13/588,483 is a continuation in part of application No. PCT/EP2011/053518, filed on Mar. 9, 2011.
Application PCT/EP2011/053518 is a continuation in part of application No. PCT/EP2010/052960, filed on Mar. 9, 2010.
Prior Publication US 2012/0316418 A1, Dec. 13, 2012
Int. Cl. A61B 5/0476 (2006.01); A61B 5/0478 (2006.01); A61B 5/00 (2006.01); G06F 1/26 (2006.01); H04R 25/00 (2006.01); H04B 3/54 (2006.01); H02J 7/34 (2006.01)
CPC A61B 5/6817 (2013.01) [A61B 5/0476 (2013.01); A61B 5/0478 (2013.01); A61B 5/6815 (2013.01); G06F 1/266 (2013.01); H04R 25/60 (2013.01); A61B 2560/0214 (2013.01); A61B 2560/0219 (2013.01); H02J 7/345 (2013.01); H04B 3/542 (2013.01); H04R 2225/021 (2013.01); H04R 2460/03 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A personal EEG monitor, comprising a base part having a signal processor, an electrode part with at least two electrodes for measuring an EEG signal of a person, said electrode part having an analog-to-digital converter for converting the EEG signal into a digital signal, and a two-wire databus for transferring data between said base part and said electrode part over two wires with said base part and electrode part located adjacent one ear, and for providing power over said two wires from one part to the other; and for the application of at least four different states in respective time slots, where a first state is during a first period of time and is for transfer of power, a second state is during a second period of time and is for transmission of signal from said base part to said electrode part, a third state is during a third period of time and is for transmission of signal from said electrode part to said base part; and a fourth state is during a fourth period of time and is set to low in order for the first state to start with a rising edge, with no power being transferred between said base part and electrode part during said second and third states, and wherein data to be transferred includes at least first and second values, and said databus represents said first value with a first signal level and represents said second value with a second signal level.