Method and apparatus for comparing waveform shapes of time-varyi

Details Method and apparatus for comparing waveform shapes of time-varyi Method and apparatus for comparing waveform shapes of time-varyi

1988-04-13

1990-01-16

Jaworski, Francis

Surgery

Truss

Pad

128708, A61B 504

Patent

active

048936324

ABSTRACT:
A method and apparatus for comparing waveshape portions of at least one time-varying signal by first forming initial templates of digital signal samples representative of the amplitude of successive time-spaced samples of portions of the time-varying signal. Next, forming reduced templates having a number of digital signal elements which is less than the number of samples in corresponding ones of the initial templates, each element of the reduced template comprising a combination of at least two samples from its corresponding initial template. And then processing corresponding elements of at least two of the reduced templates for deriving a signal representative of the degree of similarity of the respective portions of the time-varying signal represented by at least two reduced templates.

REFERENCES:
patent: 3829766 (1974-08-01), Herz
patent: 4023564 (1977-05-01), Valiquette et al.
patent: 4492235 (1985-01-01), Sitrick
patent: 4680708 (1987-07-01), Ambos et al.
patent: 4732158 (1988-03-01), Sadeh
patent: 4736295 (1988-04-01), Lachivev et al.
patent: 4742458 (1988-05-01), Nathans et al.

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