Method and apparatus for transmitting information via a bus system
US4821263A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 25, 1988 |
| Grant date | Apr 11, 1989 |
| Priority date | — |
| Expiry date | Feb 25, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/56
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for transmitting message information between a plurality of transmission units includes a plurality of data transmission channels on a bus system which are each permanently assigned to a respective transmission unit and adapted to transmit message information only to the transmission unit to which it is assigned from any one of the other transmisstion units. In addition, a plurality of status transmission channels on the bus system are each assigned to one of the transmission units and adapted to transmit status information from any one of the transmission units. This status information indicates whether the data transmission channel assigned to the same transmission unit as the respective status transmission channel is engaged or unoccupied for transmitting message information. The method and apparatus are particularly suited for switching nodes in packet-switched communications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.