5B6B coding rule inverse conversion circuit for digital transmission
US5293165A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1991 |
| Grant date | Mar 8, 1994 |
| Priority date | — |
| Expiry date | Nov 5, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/4908
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A circuit for inversely converting the signal of six bits converted by the 5B6B coding rule conversion method in the digital transmission into the original signal of five bits is described. On the occasion of inversely converting the 6-bit signal to the original 5-bit signal, the mark rate of the 6-bit signal to be converted inversely is detected in accordance with the 5B6B coding rule conversion pattern. In this case, all patterns of six bits are not detected but such six bits are divided into the upper three bits and lower three bits and the mark rates of six bits are detected from the patterns of upper three bits and lower three bits. Thereby, a number of detected patterns can be reduced and simplification of circuit structure can also be realized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.