Method and apparatus for displaying electrocardiographic signals
US4483347A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 10, 1982 |
| Grant date | Nov 20, 1984 |
| Priority date | — |
| Expiry date | Mar 10, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R13/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved system for displaying annotated physiological signals processes the signals for two-dimensional display on an oscilloscope, for annotation with time-of-day and patient information, and for marking relative to a plurality of detected, abnormal physiological events. The physiological signal is traced during a first time interval after which the time-of-day and patient information is annotated appropriately on the display during a second time interval. During a third time interval, the display is marked to identify those physiological events which have been detected by the system as being abnormal. The display is created with maximum fidelity and without loss of signal information by this three pass process. Two independent channels of physiological signals are displayed on alternate horizontal lines in the display, again without loss of signal fidelity, by tracing the first channel during a first sweep and simultaneously storing the second channel within a memory for display during a second sweep.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.