Communication apparatus
US6427004B1 · kind B1 · utility
2Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1999 |
| Grant date | Jul 30, 2002 |
| Priority date | — |
| Expiry date | Mar 1, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/00281
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
When CPU of a communication apparatus judges that a telephone line is not closed-and-connected and also judges that a transmission original is set, CPU performs processing of setting a transmission concentration. If it judges that no transmission original is set, the volume of a ringing sound is set. Further, when CPU judges that the telephone line is connected and closed and also judges that a telephone receiver is not on hook, it performs processing of setting a receiver volume. If it judges that the telephone receiver is on hook, it sets the volume of voices of a communication partner which are output from a speaker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.