Selective monitoring
US5133082A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 22, 1991 |
| Grant date | Jul 21, 1992 |
| Priority date | — |
| Expiry date | Mar 22, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/40
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a conventional non-trunked communication system (10) having a plurality of radios (13) being able to transmit and receive communication containing an ID number on a channel, a method is provided for any one of these radios (13) to select (36) the monitoring of transmissions of another radio communicating on the channel. In a receiving radio, the ID number corresponding to another radio is selectively entered (36) in a memory list of desirable ID's (35) to be monitored (35) by the receiving radio (13). When transmission containing an ID number (42) of a transmitting radio is received from the transmitting radio, the ID number of the transmitting radio is compared (48) to the memory list to find a match. A squelching means (25) is unmuted (31) only if a match is found and other unsquelching conditions are satisfied (56).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.