In-band audio signaling
US6522878B1 · kind B1 · utility
4Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 7, 1999 |
| Grant date | Feb 18, 2003 |
| Priority date | — |
| Expiry date | Apr 7, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2250/56
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The vocoder in a digital cellular phone is used to create a status message indicating something that is happening in the cellular phone. That message can be noise, beeps, voice or other information. That information is played to the user to indicate the condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.