Line take-up detection circuit
US6879686B2 · kind B2 · utility
0Cited by
10References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2001 |
| Grant date | Apr 12, 2005 |
| Priority date | — |
| Expiry date | Mar 1, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/82
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An interface circuit including a galvanic isolation barrier between a transmission line and a user equipment, and a detector for detecting, independently from a transmission, the idle or busy state of the line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.