Method of processing abnormal situation in digital transmission system
US4737957A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1986 |
| Grant date | Apr 12, 1988 |
| Priority date | — |
| Expiry date | Feb 28, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L41/069
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a digital transmission system wherein a plurality of transmission control units each of which has received data error detecting means, data storing means, receiving means and transmitting means are successively connected by a transmission medium, the transmission control unit is operated in a through mode in which received data is directely forwarded under a normal state, and when an error has been detected in received data, the operation mode of the transmission control unit is switched to a store-and-forward mode in which a group of received data are first stored and are thereafter forwarded only in the case of the absence of an error. When normal data have been continuously received in a predetermined number of times in the operation in the store-and forward mode, the operation mode of the transmission control unit is switched to the through mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.