Electronic interrogation circuits
US5014050A · kind A · utility
14Cited by
3References
2Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 29, 1989 |
| Grant date | May 7, 1991 |
| Priority date | — |
| Expiry date | Mar 29, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q9/14
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention relates to an electronic circuit for remote interrogation of a receiver through a two wire line and to detect the response signals emitted by this receiver. The circuit comprises means for comparing with a reference voltage the actual voltage defining said response signals. This reference voltage is a weighted variable voltage obtained by low band-pass filtering, in a resistance-capacity circuit, of said actual voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.