Communication system and apparatus
US5301353A · kind A · utility
77Cited by
17References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1993 |
| Grant date | Apr 5, 1994 |
| Priority date | — |
| Expiry date | Jul 29, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/737
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A communication device (16) comprises first and second transceivers and apparatus for determining when the communication device (16) is in an on-site area (11) and when the communication device (16) is in an off-site area. The first transceiver transmits and receives signals on a first communication medium (17), when the communication device (16) is in a first area (11); whereas, second transceiver transmits and receives signals on a second communication medium (28), when the communication device (16) is in a second area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.