04325384 is referenced by 31 patents and cites 3 patents.

A signal processing device composed of: a signal input for receiving an electrocardiographic signal containing a succession of QRS complexes; a signal output; a digitally operating unit having a transmission factor which is variable in discrete steps and connected between the signal input and output for supplying to the signal output a signal containing representations of the QRS complexes contained in the signal received by the signal input, with the relation between the amplitude of the signal at the signal output and the amplitude of the corresponding portions of the signal received by the signal input being proportional to the existing transmission factor of the digitally operating unit; and a transmission factor control unit connected to monitor the signal at the signal output for increasing the transmission factor of the digitally operating unit by one step in response to each appearance at the signal output of a QRS complex representation having a peak value between selected first and second threshold values and for reducing the transmission factor by one step in response to each appearance at the signal output of a QRS complex representation having a peak value greater than a selected third threshold value higher than each of the first and second threshold values.

Title
Digitally controlled amplitude regulating device for electrocardiographic signals
Application Number
6/101495
Publication Number
4325384
Application Date
December 10, 1979
Publication Date
April 20, 1982
Inventor
Max Schaldach
Erlangen
DE
Klaus Olach
Berlin
DE
Reinhard Blaser
Budingen
DE
Agent
Spencer & Kaye
Assignee
BIOTRONIK Mess und Therapiegerate & Co Ingenieurburo Berlin
DE
IPC
A61N 1/36
A61B 5/04
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