Isolating interface with a differentiating circuit comprising a capacitive barrier and method for transmitting a signal by means of such isolating interface
US8305137B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jun 20, 2008 |
| Grant date | Nov 6, 2012 |
| Priority date | — |
| Expiry date | May 2, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0266
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A known method for parallel two-way symmetrical signal transmission by means of an isolating interface with a differentiating circuit comprising a capacitive barrier is improved. When restarting communication in the selected direction after a longer break, a pilot signal is conducted via the transmitting plates for the communication in the reverse direction and capacitive compensators to one of the receiving plates for communication in the selected direction. Threshold levels for comparisons of the signals of the first and second time derivative are decreased, the capacitance of capacitive compensators is then set to reduce output the output signal and finally communication is reestablished. Transmitting plates for communication in the reverse direction are now connected to the receiving plates for communication in the selected direction through the capacitive compensators with the capacitance adjusted as described above. This provides satisfactory signal transmission even when a thick layer of an electrically well conductive liquid appears between the plates of the isolating interface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.