Patent ID: 8808192
Filing Date: 2014-08-19
Classification: A61B

Abstract:
1. A signal extracting apparatus, comprising: a signal input unit to input one or more time-series signals in which elements are arranged in temporal order; a generating unit to generate a plurality of short time-series signals by selecting the elements from the time-series signals, wherein at least one time-series signal generates two or more short time-series signals where the selected elements have different but partially overlapping temporal ranges with each other; a reference signal creating unit to create a reference signal indicating a temporal characteristic of an independent signal to be extracted; and an independent component analysis with reference (ICA-R) unit to perform independent component analysis with reference for a plurality of the short time-series signals generated by the generating unit based on the reference signal to extract the independent signal, wherein the independent signal to be extracted contains a signal that is considered to be autoregressive, and the generating unit generates a plurality of the short time-series signals having different but partially overlapping temporal ranges so that one or more short time-series signals are dependent on one or more other short time-series signals when interpreted based on the autoregressive relationship.