Two part EEG monitor with databus and method of communicating between the parts
First Claim
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.
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Accused Products
Abstract
A personal wearable EEG monitor comprises a base part (1) having signal processing means (23), and an electrode part (2) with at least two electrodes (11, 12) for measuring an EEG signal of a person. The electrode part (2) comprises means for converting the EEG signal into a digital signal. The EEG monitor comprises a databus for transferring data between the base part (1) and the electrode part (2) and for providing power from one part to the other. The databus is adapted for application of two electrical wires. The invention further provides a method for communicating between two parts of an EEG monitor.
24 Citations
28 Claims
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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.
- 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
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2. 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 electrical wires with said base part and electrode part located adjacent one ear, and for also providing power from one part to the other over said two wires, 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 different from the first signal level.
Specification