05876350 is referenced by 112 patents and cites 96 patents.

A convenient low-cost heart rate monitor. In one embodiment, a digital filter structure includes a low pass filter having a notch at 60 Hz and a bandpass filter which amplifies signals in a frequency range from 10-40 Hz and has a notch at 60 Hz. This digital filter has a recursive structure and uses integer coefficients to simplify and speed up the calculations. A four bit microcontroller may implement the digital filter. The output of the digital filter is subject to enhancement signal processing to emphasize QRS complexes indicative of human heartbeats.

Title
EKG based heart rate monitor with digital filter and enhancement signal processor
Application Number
554373
Publication Number
5876350
Application Date
November 7, 1996
Publication Date
March 2, 1999
Inventor
Yuh Show Tsai
Nashville
TN, US
Thomas Ying Ching Lo
Fremont
CA, US
Agent
Townsend and Townsend and Crew
Assignee
Salutron
CA, US
IPC
A61B 5/02
A61B 5/024
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