File AAMI.TX (text file)

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ABSTRACT FOR THE SPRING MEETING OF THE ASSOCIATION FOR THE 
ADVANCEMENT OF MEDICAL INSTRUMENTATION.
	9/10/73

WE HAVE TEAMED A NEW
PEAK DETECTOR WITH A SCANNER CIRCUIT  TO PRODUCE
AN EIGHT CHANNEL LOGGING SYSTEM FOR AUTOANALYZERS AND OTHER PEAK 
PRODUCING SOURCES. WITH IT YOU CAN REDUCE YOUR DIGITAL COMPUTER
COSTS BY PREPROCESSING ANALOG DATA TO A SMALL SET OF ESSENTIAL 
VALUES.
OUR STANDARD MULTICHANNEL UNIT LOGS PEAKS AND CHANNEL IDENTIFICATION
ON TELETYPE PAPER TAPE. THE TAPE IS LATER PROCESSED AT A TIME SHARING
TERMINAL. A MODIFIED UNIT FEEDS ITS OUTPUT DIRECTLY TO A
MULTI-TASK COMPUTER AND PAPER TAPE IS USED FOR BACKUP.

THE SPECIAL DETECTOR CIRCUIT SEARCHES FOR VALLEYS AS WELL AS PEAKS AND IS 
THUS INSENSITIVE TO DRIFTING BASELINES.THE RESOLUTION
OF  THE OUTPUT IS LIMITED ONLY BY THE NOISE ON  INPUT SIGNAL.
THE SENSITIVITY FOR PEAK AND VALLEY
DETECTION CAN BE SET TO BE A FUNCTION OF SIGNAL AMPLITUDE
OR SOME PREDERTIMENED CONSTANT. THE CIRCUITS ARE IMPLEMENTED  
WITH OPERATIONAL AMPLIFIERS AND CAN PROCESS
MUCH FASTER WAVEFORMS THAN THOSE GENERATED BY MOST 
AUTOMATIC CHEMISTRY SYSTEMS.



IN ANOTHER APPLICATION, THE SAME CIRCUITS ARE MODIFIED TO REPORT
A STREAM OF SYSTOLIC AND DIASTOLIC VALUES TO A REMOTE COMPUTER
FROM AN ONGOING ANIMAL EXPERIMENT.



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