Communications systems
US4933935A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 27, 1989 |
| Grant date | Jun 12, 1990 |
| Priority date | — |
| Expiry date | Mar 27, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L47/29
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A communications network comprises a plurality of stations which can communicate via a ring. Information is transmitted from one station to another in message blocks which circulate around the ring. The message blocks include control bits and a protocol is employed which ensures that no one station can monopolize the available message blocks. Also described is a technique which allows each station independently to assess the current spare capacity of the network. A link multiplexer may be used in conjunction with rings and incorporates a similar protocol. It provides access to a link to queues of message blocks provided queue thresholds have not been reached.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.