Radio communication system
US4969205A · kind A · utility
11Cited by
9References
42Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 1, 1988 |
| Grant date | Nov 6, 1990 |
| Priority date | — |
| Expiry date | Jul 1, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/72508
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A plurality of control channels different frequency is used at equal frequencies to couple a base unit and radio communication terminal unit. A radio communication device uses the plurality of control channels sequentially or at equal frequencies by switching operations to thereby transmit and/or receive information on talking channels, etc. When a particular control channel is occupied for a long time due to cross talk, etc., another control channel is selected for telephone communication purposes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.