Patent ID: 7680531
Filing Date: 2010-03-16
Classification: A61B,G06K

Abstract:
1. A method, comprising the step of: separating one or more fetal heart component signals from heart signal information obtained from a pregnant female based on singular value decomposition, wherein the step of separating the one or more fetal heart component signals from the heart signal information obtained from the pregnant female based on singular value decomposition comprises the steps of: computing a singular value decomposition of a covariance matrix of the heart signal information to yield a set of output signals; computing a delay parameter to minimize an absolute value of cross-correlations between the set of output signals; taking a singular value decomposition of the sum of a covariance matrix of the set of output signals; and taking a singular value decomposition of a transpose of the covariance matrix of the set of output signals to yield a separated output estimate of the one or more fetal heart component signals.