Monitoring line conditions in the data transmission mode
US6374375B1 · kind B1 · utility
31Cited by
5References
52Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 9, 1997 |
| Grant date | Apr 16, 2002 |
| Priority date | — |
| Expiry date | May 9, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/241
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for allowing a modem transmitting data in the data mode to initiate retraining mode due to changing line conditions. The modem inserts a test signal within the data received from a computer system. The data and test signal are encoded and sent over a network to a second modem. The second modem compares the test signal with a standard test signal, and if the test signal received is different from the standard test signal, the second modem initiates retraining of the modems to adjust for the varying line conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.