High speed switch as for an optical communication system
US4933930A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1988 |
| Grant date | Jun 12, 1990 |
| Priority date | — |
| Expiry date | Oct 31, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/005
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a data communication network the routing of data items from a group of eight source processors to a group of eight destination processors is controlled by code values assigned to each of the data values. The data items to be routed are bit-serial binary signals. These are encoded by the source processor using a pair of code values, one for each value of a bit of the binary signal. The eight source processors each encode eight bit-serial signals using respectively different code tables. The code tables are generated as different permutations of a basic code set. Each code table has the property that any additive combination of encoded values for all of the data items in a group produces a unique sum. The eight encoded values produced by each processor are summed to produce a set of analog channel symbols that are transmitted over an analog channel to a central switch fabric. In the switch fabric, the channel symbols are partially decoded to recover the encoded data values. The data values are regrouped according to their destination processors and summed to produce further sets of channel symbols which are transmitted to the destination processors. At the destination processors, …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.