Arrangement for controlling a signal switching system and a method for using this arrangement
US4048482A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1976 |
| Grant date | Sep 13, 1977 |
| Priority date | — |
| Expiry date | Feb 23, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q3/545
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In an electronic switching system, there is provided an arrangement which, without doubling the computers of the control units, enables the switching elements of the system to be controlled without interruption in the event of a failure affecting their control. To this end, the system comprises n control units each with an independent store (memory). The program corresponding to two functions i.e. to the control of two groups of switching elements is written in the independent store of each unit. Exchange memories, interconnecting the independent stores in twos, enable the momentary data necessary for monitoring of the group of switching elements in charge of the control unit under failure to be transferred from this unit to the other unit holding, in its independent store, the program relating to the same group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.