Transmit/receive mode protection arrangement
US4366578A · kind A · utility
5Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1981 |
| Grant date | Dec 28, 1982 |
| Priority date | — |
| Expiry date | Feb 19, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/46
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An arrangement for preventing inadvertent transmission by a push-to-talk transceiver that might join a communications channel. After the push-to-talk switch has been activated, an average background noise level is established. Audio from speech, for example, having peaks greater than a predetermined percentage of the average background noise level are required to maintain the push-to-talk function activated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.