Land mobile radio and adapter for use with standard mobile phone headset
US9054781B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 23, 2011 |
| Grant date | Jun 9, 2015 |
| Priority date | — |
| Expiry date | Oct 26, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/44
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An adapter (400) for a portable land mobile radio (LMR) transceiver system (414) where the LMR includes a push-to-talk (PTT) transmitter control system. The adapter includes a tip-ring-sleeve (TRS) type interface connector (402) configured to accept a plug (101) from a standard mobile phone headset. An adapter circuit (401) is configured to detect a momentary actuation of an answer/end switch (201) of a standard mobile phone headset when a TRS plug of the standard mobile phone headset is inserted in the interface connector (402). The adapter circuit alternately latches a PTT input of the LMR transmitter control system in either a transmit active state, or a transmit inactive state, in response to actuation of the answer/end switch of the mobile phone handset.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.