Electromedical device for the acceptance and processing of electric physiological signals
US4245650A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 1979 |
| Grant date | Jan 20, 1981 |
| Priority date | — |
| Expiry date | Feb 15, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/908
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In an exemplary embodiment a multiplexer unit is arranged in the first device unit in the input channels for electric physiological signals and a demultiplexer unit is arranged in the second device unit on the side of the output channels for the time-shared scanning of the signals in the input or, respectively, output channel; and a pulse amplitude modulator and a single galvanically separating coupling location are inserted in series between the multiplexer unit of the first device unit and the demultiplexer unit of the second device unit at the interface between both device units for the de-coupled signal transmission in the time multiplex mode. By this arrangement the minimized number of coupling locations holds coupling capacitance and leakage current to a minimum with only a modest outlay for appertaining control circuitry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.