04549551 is referenced by 35 patents and cites 6 patents.

An electronic heart sound detector in which a transducer detects the two primary heart beats of the heart cycle to produce a signal which is converted to a digital signal, filtered and the intervals between adjacent transitions determined and stored. The intervals are compared with previous values, successive values added if found substantially different and the stored or added values displayed if substantially the same as a previous correct value. The functions may be carried out by a microprocessor.

Title
Heart rate detector
Application Number
6/553116
Publication Number
4549551
Application Date
November 18, 1983
Publication Date
October 29, 1985
Inventor
Ronald A Eirich
Medicine Hat
CA
Walter R Dyck
Medicine Hat
CA
Agent
Cushman Darby & Cushman
Assignee
Her Majesty the Queen in right of Canada represented by the Minister of National Defense
CA
IPC
A61B 5/02
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