Analog subscriber carrier system terminal with automatic gain and slope correction
US4580260A · kind A · utility
4Cited by
5References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 3, 1984 |
| Grant date | Apr 1, 1986 |
| Priority date | — |
| Expiry date | May 3, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B3/10
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An FDM subscriber carrier system with two pilots located adjacent the upper and lower ends of the high frequency band uses the detected pilot levels at a remote terminal to adjust the gain and slope amplifiers in both directions of transmission. A microprocessor, programmed to identify the cable transmission characteristics, uses status signals derived from the two detected pilots to produce control signals to adjust and optimize the gain and slope settings of line amplifiers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.