Method and apparatus for identifying recurring signal patterns

Details Method and apparatus for identifying recurring signal patterns Method and apparatus for identifying recurring signal patterns

1978-04-14

1980-07-08

Kamm, William E.

Surgery

Truss

Pad

364417, A61B 504

Patent

active

042112370

ABSTRACT:
A periodically occurring signal pattern that is part of a signal mixture including interference components, in particular QRS complexes of fetal heart signals in an abdominally derived fetomaternal electrocardiogram, is detected by storing the amplitude-time waveform pattern of a signal that has initially been recognized according to a first criterion, preferably an amplitude criterion, in a memory and then using this pattern for identifying subsequent signals according to a second criterion which is the degree of coincidence of the signal in question with the amplitude shape of the stored pattern.

REFERENCES:
patent: 3755783 (1973-08-01), Astarjian et al.
patent: 3811428 (1974-05-01), Van Horn et al.
patent: 3861387 (1975-01-01), Lawhorn et al.
patent: 3878833 (1975-04-01), Arneson et al.
patent: 3940692 (1976-02-01), Neilson
patent: 4023564 (1977-05-01), Valiquett et al.
patent: 4086652 (1978-04-01), Mantz

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