Method and apparatus for displaying electrocardiographic signals
US4528988A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 1, 1984 |
| Grant date | Jul 16, 1985 |
| Priority date | — |
| Expiry date | May 1, 2004 |
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. Display is made in any one of a plurality of display formats in one of a plurality of operational modes through the use of program counters which step through various memories d…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.