Process and device for processing and displaying a read-out signal from an electrocardiogram recording read at a speed greater than the speed of recording

• US 4,275,742 A
• Filed: 05/08/1979
• Issued: 06/30/1981
• Est. Priority Date: 05/12/1978
• Status: Expired due to Term

• Current Assignee: C M Industries
• Original Assignee: C M Industries
• Inventors: Faisandier, Yves
• Primary Examiner(s): Kamm, William E.
• Application Number:
  US06/036,986
• Time in Patent Office: 784 Days
• Field of Search: 128/702, 128/703, 128/704, 128/706, 128/709, 128/710, 128/711, 128/700
• US Class Current: 600/516
• CPC Class Codes: A61B 5/02455 provided with high/low alarm devices
• CPC Class Codes: A61B 5/337 Playback at speeds other than the recording speed

Abstract

A process and device for processing and displaying an electrocardiogram signal read at a speed greater than the speed of recording, in which process a plurality of types of pathological complexes are selectively and simultaneously detected with the aid of discriminators on the signal read, and on each of a plurality of distinct display locations there is displayed each signal sequence presenting a complex of a type corresponding to said display location. The process and device are more particularly applicable to the statistical processing such as the drawing up of a histogram of the pathological occurrences of an electrocardiogram signal.

Claims

1. A method of processing and displaying an electrocardiogram signal that has been recorded at a first speed, comprising the steps of:

reading said recorded signal at a speed greater than the first speed of recording;

selectively and simultaneously detecting the occurrence of a plurality of types of pathological complexes from the read signal; and

simultaneously displaying a signal sequence of said read signal for each detected pathological complex at respective different ones of a plurality of distinct display locations.

2. The method of claim 1, wherein the step of selectively and simultaneously detecting selectively detects the occurrence of a particular type of pathological complex by measuring each period of the read signal and comparing each said measured period with a reference value.

3. The method of claim 1, wherein the step of selectively and simultaneously detecting selectively detects the occurrence of a particular type of pathological complex by measuring each period of the read signal and determining whether each measured period is included in a range between two reference values.

4. The method of claim 1, wherein the step of selectively and simultaneously detecting selectively detects the occurrence of a particular type of pathological complex by measuring each period of the read signal, calculating the difference between each measured period and the immediately preceding period and comparing each difference with a reference value.

5. The method of claim 1, wherein the step of selectively and simultaneously detecting selectively detects the occurrence of a particular type of pathological complex by measuring each period of the read signal, calculating a mean value for each n consecutive measured periods, n being an integer greater than 1, and comparing each mean value with a reference value.

6. The method of claim 1, wherein the step of selectively and simultaneously detecting selectively detects the occurrence of a particular type of pathological complex by measuring each period of the read signal, calculating a mean value for each n consecutive measured periods, n being an integer greater than 1, and determining whether each mean value is included in a range between two reference values.

7. The method of claim 1, wherein the step of selectively and simultaneously detecting selectively detects the occurrence of a particular type of pathological complex by measuring each period of the read signal, comparing each measured period with a reference value and detecting each series of p consecutive cycles of the read signal in which the measured periods are one of lower and higher than said reference value, p being an integer greater than 1.

8. The method of claim 1, wherein the step of selectively and simultaneously detecting selectively detects the occurrence of a particular type of pathological complex by comparing the shape of each cycle of the read signal with a reference shape.

9. Apparatus for processing and displaying an electrocardiogram signal that has been recorded at a first speed on a recording medium, comprising:

reading means for reading said recorded signal at a speed greater than the first speed of recording;

delay means for delaying said read signal;

a plurality of memory means, each receiving the delayed signal from said delay means;

a plurality of discriminator means, each adapted to detect the occurrence of a type of pathological complex in the read signal from said reading means and each discriminator means controlling a respective one of said memory means to record a signal sequence of the delayed signal corresponding to a respective type of pathological complex upon the detection of said respective type of pathological complex; and

display means including a plurality of distinct display locations, each adapted to display a respective signal sequence recorded by a respective one of said memory means, whereby each display location is associated with a particular type of pathological complex.

10. Apparatus according to claim 9;

wherein said recording medium is a magnetic tape.