Portable communication device
US5884156A · kind A · utility
62Cited by
8References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 20, 1996 |
| Grant date | Mar 16, 1999 |
| Priority date | — |
| Expiry date | Feb 20, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/06
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A portable communication device capable of operating in a telephony mode and in a dispatch mode is disclosed. The device includes a proximity sensor and a first speaker mounted on a front panel and a second speaker mounted on a rear panel. The operation of the speakers is controlled in accordance with the operational state of the device as well as the output of the proximity sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.