Patent ID: 9078609
Filing Date: 2015-07-14
Classification: A61B

Abstract:
1. A system for measuring a value of a physiological parameter of a subject, the system comprising a computer processor configured to: determine a first baseline signal for a first received waveform, wherein the first baseline signal corresponds to peak or trough information of the first received waveform, and a second baseline signal for a second received waveform, wherein the second baseline signal corresponds to peak or trough information of the second received waveform, the first and second received waveforms being indicative of the physiological parameter of the subject; filter the first and second received waveforms to obtain a first direct-current (DC) component for the first received waveform and a second DC component for the second received waveform; calculate a first difference signal A derive a measured value for the physiological parameter from the first and second difference signals.