Power saving circuit for use with a converter circuit in a telephone switching installation
US4069396A · kind A · utility
3Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1976 |
| Grant date | Jan 17, 1978 |
| Priority date | — |
| Expiry date | Sep 13, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Power saving means is shown for use with a converter circuit in a telephone switching installation. The converter circuit comprises an analog-to-digital converter and a digital-to-analog converter. The voltage supply for the converter circuit is switched on only upon the appearance of analog signals to be converted into digital signals or digital signals to be converted into analog signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.