Telephony device with integrated messaging
US6816723B1 · kind B1 · utility
21Cited by
16References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 12, 1997 |
| Grant date | Nov 9, 2004 |
| Priority date | — |
| Expiry date | Mar 17, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/6505
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A cordless communication device is provided in which a processor used to code and decode signals for the wireless communication is further used to process messages for an integral answering machine. An existing digital signal processor (DSP) within the cordless phone is used to code and decode signal for wireless communication between the base station and the handset. The coding scheme used for the wireless communication, for example, adaptive differential pulse code modulation (ADPCM), is also used for compressing, storing and retrieving messages used in the answering machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.