Multi-function control circuit
US4152696A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 16, 1977 |
| Grant date | May 1, 1979 |
| Priority date | — |
| Expiry date | Nov 16, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08C19/025
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A control system capable of selectively providing one of a plurality of control signals with each signal corresponding to a particular predesignated function. The output signals from the control system are generated in response to constant voltage input signals. The system includes an input circuit and a control circuit. The input circuit is coupled to the control circuit through a single transmission line over which a constant level voltage is transmitted. The voltage level of the input signal which is transmitted is selected from among a plurality of predetermined levels in dependence upon the control function to be achieved. The control circuit, in turn, receives the input signals and in response thereto will activate one of a plurality of switches for providing a corresponding output signal which serves to enable an appropriate control function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.