Baseline drift canceling method and device
AssigneeIndustrial Technology Research Institute
InventorsShiow-Harn Lee, Wen-Yang Chou
Life of this patent
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Abstract
An embodiment of a baseline drift canceling method is provided. The method removes a baseline drift signal from a bioelectric signal, and includes the steps as follows: delaying the bioelectric signal by an analog time delay circuit to generate a first bioelectric signal; according to the bioelectric signal to generate a baseline drift signal; and acquiring a second bioelectric signal according to the first bioelectric signal and the baseline drift signal.
Claims25
A baseline drift canceling method to remove a baseline drift signal in a bioelectric signal, comprising:
- delaying the bioelectric signal by an analog time delay circuit to generate a first bioelectric signal;
- according to the bioelectric signal to generate a baseline drift signal;
- and
- acquiring a second bioelectric signal according to the first bioelectric signal and the baseline drift signal.
A baseline drift canceling device to remove a baseline drift signal in a bioelectric signal, comprising:
- a first amplifier to receive and amplify a sensing signal to generate the bioelectric signal;
- a baseline drift canceling unit, comprising:
- a low pass filter receiving the bioelectric signal to generate the baseline drift signal;
- an analog time delay circuit to delay the bioelectric signal to generate a first bioelectric signal;
- and
- an adder receiving the baseline drift signal and the first bioelectric signal to generate a second bioelectric signal;
- and
- a digital amplifier receiving and amplifying the second bioelectric signal to generate a digital bioelectric signal.
A bioelectric signal sensing apparatus, comprising:
- a first sensor outputting a first sensing signal;
- a second sensor outputting a second sensing signal;
- a first amplifier receiving the first sensing signal and the second sensing signal to generate a bioelectric signal;
- and
- at least one baseline drift canceling unit, comprising:
- a low pass filter receiving the bioelectric signal to generate a baseline drift signal;
- an analog time delay circuit to delay the bioelectric signal to generate a first bioelectric signal;
- and
- an adder receiving the baseline drift signal and the first bioelectric signal to generate a second bioelectric signal.
Dependencies are inferred from the claim text.