Self synchronous scrambler apparatus and method for use in dense wavelength division multiplexing
US6820230B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 5, 2002 |
| Grant date | Nov 16, 2004 |
| Priority date | — |
| Expiry date | Mar 6, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0305
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method employing a self-synchronous scrambler for transforming an arbitrary bit-stream into a bit-stream suitable for input to a DWDM network, and for reconstituting the original bit-stream from the transformed bit-stream. This method enables DWDM network equipment to properly transport data independent of the bit-stream characteristics and line encoding of the data. The self-synchronous scrambler of the present invention equalizes the number of “1”s and ‘0”s in an input bit-pattern over time periods of a few bit-clock periods, thus making it suitable for transport over a DWDM channel and providing for the recovery of the original bit-pattern from the scrambled pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.