Dial inbound meter interface unit which derives power from telephone line when telephone is ringing
US5982862A · kind A · utility
3Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 1996 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Jul 8, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M11/002
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention is a dial inbound MIU which includes a rechargeable power supply, such as a double layer capacitor (sometimes called a "supercapacitor" or a "SuperCap") or a rechargeable battery. The power supply can be recharged from the telephone line, either from the DC current available when the phone line is on-hook or off-hook or from the AC current which is available when the telephone line is ringing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.