Method and apparatus for orienting the display of information from a recirculating memory
US4187858A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 17, 1978 |
| Grant date | Feb 12, 1980 |
| Priority date | — |
| Expiry date | Apr 17, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R13/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In apparatus such as a defibrillator having a CRT display of an ECG wave, and an alternative display of the firing time of the defibrillator pulse in relation to the ECG wave, the inclusion of method and apparatus for orienting the waveform to a synchronization indicator. In the preferred form, the display is a single, non-fade stationary complex of the ECG wave starting prior to the occurrence of the oriented "P" wave. The display is timed through combination of clocking pulses responsive to a wave detection apparatus and a recirculating memory which establishes an orienting marker. The clock pulsing includes a predetermined delay to initiation of display from the data recirculating memory such that the data display is coordinated in time to a fixed reference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.