Method and apparatus for mathematical characterization of the electrocardiogram
First Claim
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1. An apparatus for mathematically characterizing an input electrocardiographic waveform for obtaining a reconstruction of said input electrocardiographic waveform, said apparatus comprising:
- input means for detecting said input electrocardiographic waveform;
computing means operatively connected to said input means for performing the steps of;
segmentalizing said input waveform into main segments and establishing a midpoint for each main segment;
defining overlapping segments of said main segments, each overlapping segment extending between midpoints of two successive main segments and defining a common section with a corresponding main segment;
selecting main strategic points for each main segment and overlapping strategic points for each overlapping segment;
generating a set of characteristic data for each common section by comparing said main strategic points with said overlapping strategic points over corresponding common sections; and
producing a reconstructed electrocardiographic waveform corresponding to said input waveform from said selected main and overlapping strategic points in accordance with an interpolation method using a spline function, whereby the reconstructed waveform mathematically characterizes the input electrocardiographic waveform; and
means for displaying said reconstructed waveform.
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Abstract
Strategic points on an input waveform are selected and a continuous trace is then laid through the sequence of points by an interpolation method, known as the spline function, to reconstruct the original waveform with high fidelity. One application of the present apparatus is in the reconstruction of an electrocardiographic trace.
31 Citations
8 Claims
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1. An apparatus for mathematically characterizing an input electrocardiographic waveform for obtaining a reconstruction of said input electrocardiographic waveform, said apparatus comprising:
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input means for detecting said input electrocardiographic waveform; computing means operatively connected to said input means for performing the steps of; segmentalizing said input waveform into main segments and establishing a midpoint for each main segment; defining overlapping segments of said main segments, each overlapping segment extending between midpoints of two successive main segments and defining a common section with a corresponding main segment; selecting main strategic points for each main segment and overlapping strategic points for each overlapping segment; generating a set of characteristic data for each common section by comparing said main strategic points with said overlapping strategic points over corresponding common sections; and producing a reconstructed electrocardiographic waveform corresponding to said input waveform from said selected main and overlapping strategic points in accordance with an interpolation method using a spline function, whereby the reconstructed waveform mathematically characterizes the input electrocardiographic waveform; and means for displaying said reconstructed waveform. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for mathematically characterizing an input electrocardiographic waveform for obtaining a reconstruction of said input electrocardiographic waveform, said method comprising the steps of:
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segmentalizing said input waveform into main segments; establishing a midpoint for each main segment; defining overlapping segments of said main segments, each overlapping segment extending between midpoints of two successive main segments and defining a common section with a corresponding main segment; selecting main strategic points for each main segment and overlapping strategic points for each overlapping segment; generating a set of characteristic data for each common section by comparing said main strategic points with said overlapping strategic points over corresponding common sections; laying a continuous trace through the selected main and overlapping strategic points in accordance with an interpolating method using a spline function so as to form a reconstructed electrocardiographic waveform corresponding to said input electrocardiographic waveform; and displaying the reconstructed electrocardiographic waveform.
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8. A method for mathematically characterizing an input electrocardiographic waveform, said method comprising the steps of:
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converting into digital form said input electrocardiographic waveform; segmentalizing said digitized input waveform into main segments; establishing a midpoint for each main segment; defining overlapping segments of said main segments, each overlapping segment extending between midpoints of two successive main segments and defining a common section with a corresponding main segment; selecting main strategic points for each main segment and overlapping strategic points for each overlapping segment; generating a set of characteristic data for each common section by comparing said main strategic points with said overlapping strategic points over corresponding common sections; laying a continuous trace through said selected main and overlapping strategic points in accordance with an interpolation method using a spline function to thereby form a reconstructed electrocardiographic waveform corresponding to said input electrocardiographic waveform; and displaying said reconstructed electrocardiographic waveform.
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Specification