Digital regenerator having improving noise immunity
US4123625A · kind A · utility
14Cited by
8References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 3, 1977 |
| Grant date | Oct 31, 1978 |
| Priority date | — |
| Expiry date | Nov 3, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/497
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A digital repeater for the regeneration of partial-response signals having improved noise immunity which basically comprises an equalizer followed by a regenerator. A band limiting filter disposed between the equalizer and regenerator transforms the partial-response signal to a modified form having the same or fewer levels and concurrently reduces the total power of the noise interference. A second filter disposed after the regenerator and having an inverse transfer function replicates the partial-response signal at its output so that the repeater appears transparent to the transmission line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.