Method and device for communication
US6680979B2 · kind B2 · utility
13Cited by
3References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 8, 2001 |
| Grant date | Jan 20, 2004 |
| Priority date | — |
| Expiry date | Nov 25, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/023
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A transmission line is monitored while the communication is held in a steady state and moving a tone set if there are no tones securing a predetermined value of an S/N ratio. The tone set is not moving if there are at least two tones securing the S/N ratio. The tone set is moved by the predetermined method if there is one tone securing the S/N ratio and it is judged that communication quality can be maintained by moving the tone set in a same tone group. The tone group moved if it is judged that the communication quality cannot be maintained even by executing movement of the tone set in the same tone group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.