Encoding/detection method for digital data transmitter with a signal having multiple levels
US6031472A · kind A · utility
14Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1998 |
| Grant date | Feb 29, 2000 |
| Priority date | — |
| Expiry date | Feb 17, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M5/08
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An encoding/decoding method for a signal having at least two different positive and negative levels. Each symbol representing, for instance, two binary bits is encoded in each symbol period. During each symbol period, the encoded signal transitions between a level of one polarity to a level in the opposite polarity. The levels and transitions are selected so that there is no DC component. The frequency spectrum is shifted away from the lower frequencies with this encoding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.