Method and apparatus for identifying location of a lost token signal in a data communication network
US4860284A · kind A · utility
18Cited by
3References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1988 |
| Grant date | Aug 22, 1989 |
| Priority date | — |
| Expiry date | Apr 20, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/437
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Apparatus and method for identifying the location of a lost token signal continuously transmitted on transmission paths interconnecting nodes of a network to sequentially enable the nodes to write data onto the network. The arrival of the token signal at each node is recorded in counter states of a token track counter corresponding with the node. The recorded binary counter states are compared upon the failure of the token signal to arrive at a node to detect mismatches and transitions occurring between adjacent nodes counter states identifying the network location of the lost token signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.