Portable communication system comprising a local and wide area communication units which can store a communication when the wide area communication system is not available
US5533097A · kind A · utility
92Cited by
22References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1993 |
| Grant date | Jul 2, 1996 |
| Priority date | — |
| Expiry date | Dec 8, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/028
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A local-area RF communication unit (305) is incorporated in a portable housing, such as a briefcase (101), and adapted to communicate with personal communication devices, such as a handset (105) and notepad (107). One or more wide-area RF communication units (303) are disposed in the briefcase (101) and adapted to communicate with a wide-area communication system. The local-area RF communication unit (305) and the wide-area communication unit are selectively controlled by a microprocessor (301) within the briefcase (101).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.