Ring-type local area network
US5257259A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 5, 1991 |
| Grant date | Oct 26, 1993 |
| Priority date | — |
| Expiry date | Jun 5, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/427
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a ring-type LAN, in the decoder of a communication station, a symbol series is decoded from a signal transmitted through the medium of a transmission path and then a synchronization symbol is detected and a first symbol series is synchronized with the synchronization symbol and outputted. Next, in the plurality of dividers of the communication station, only the specific symbols which are used in the LANs of the different protocols are extracted from the first symbol series and a second symbol series are created and outputted. Then, in the plurality of LAN connectors, the second symbol series are inputted and the processing and replacement of the second symbol series is conducted by means of predetermined protocols and new symbol series are outputted. Next, in the combiner, the plurality of symbol series are combined and a new symbol series is outputted. Next, in the encoder, a synchronization symbol is encoded at regular intervals into the symbol series outputted from the combiner and a new symbol series is created. At this time, in the case in which a plurality of symbol series does not exist, a symbol which indicates the nonexistence of a symbol series is inserted and a new sy…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.