Power cutback in splitterless ADSL systems
US6356585B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1998 |
| Grant date | Mar 12, 2002 |
| Priority date | — |
| Expiry date | Sep 29, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0026
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A splitterless digital subscriber line modem adapted to be coupled to a subscriber line including a sending end and a receiving end, the modem being capable of simultaneous access to the subscriber line with other telephone equipment operating in a frequency band below four kilohertz is disclosed herein. The modem includes a data terminal and a control circuit. The data terminal couples the modem to the subscriber line. The control circuit is coupled to the data terminal and receives and transmits signals to and from the data terminal. The control circuit utilizes line coding techniques to measure signal and noise at the receiving end and adjusts amplitude of the signal in response to the signal and the noise whereby power of the signal is optimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.