Modem line connection circuit and the control circuit
US6408071B1 · kind B1 · utility
2Cited by
6References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 4, 2000 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | May 4, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M11/06
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Disclosed is a modem line connection circuit for connecting with public telephone line, which has: a simulated inductance circuit composing a dry transformer; a current-limiting circuit which limits excess current to flow through the simulated inductance circuit; and an indicator circuit which detects the flow of excess current in response to the operation of the current-limiting circuit and indicates the detection of excess current. Also, the circuit has a switch which makes the operation of the modem line connection circuit stop when the current-limiting circuit operates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.