Telephone device
US6339641B1 · kind B1 · utility
0Cited by
6References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 29, 1997 |
| Grant date | Jan 15, 2002 |
| Priority date | — |
| Expiry date | Dec 29, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M9/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a facsimile machine 1, when the speakerphone key 14 is depressed (S1: YES) and a call signal from some other telephone is not arriving to the facsimile machine 1(S2: NO), a speaker 26 is made ON and the microphone M is made OFF (S3). When at least one key of a dial key group 11 is depressed (S4: YES) and the telephone line 25 is connected to a telephone of the other end (S5: YES), the microphone M is made ON while the speaker 26 is maintained as being ON (S6).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.