04573479 is referenced by 17 patents and cites 8 patents.

For determining fetal heart rate signals representing present and one or more previous fetal heart rate cycles are processed using a correlation technique. Each correlation signal produced by this technique is further processed for substantially eliminating the possibility of detecting the fetal heart rate at twice its real rate.

Title
Systems and methods for monitoring the fetal heart
Application Number
6/623735
Publication Number
4573479
Application Date
June 22, 1984
Publication Date
March 4, 1986
Inventor
Mark J Tuccillo
Southington
CT, US
Agent
Edward M Blocker
Assignee
American Home Products Corporation
NY, US
IPC
A61B 5/04
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