Method and apparatus for electrical conversion of non-return to zero encoded signal to return to zero encoded signal
US6680679B2 · kind B2 · utility
18Cited by
21References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 1, 2002 |
| Grant date | Jan 20, 2004 |
| Priority date | — |
| Expiry date | Mar 1, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M5/14
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for electrically converting a NRZ signal into a RZ signal. A NRZ signal is summed with a phase-aligned clock signal. The resultant summed signal is then passed through a biased PHEMT transistor which has highly non-linear characteristics. The transistor is biased such that portions of the summed signal below a predetermined level are clipped resulting in an inverted RZ format signal equivalent to the received NRZ signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.