Analog subscriber carrier system repeater with automatic gain and slope correction
US4583220A · kind A · utility
8Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 3, 1984 |
| Grant date | Apr 15, 1986 |
| Priority date | — |
| Expiry date | May 3, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B3/36
- 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 repeater 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.