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| Number | Title | Issue Date |
| 7818037 | Techniques for wirelessly controlling push-to-talk operation of half-duplex wireless device Disclosed herein is a communications system implementing a microphone wirelessly connected to a half-duplex communications device, such as a two-way radio or a radio-simulating cellular phone. The microphone may incorporate a transmit/receive switch wherein a transm... | 10/19/2010 |
| 7818036 | Techniques for wirelessly controlling push-to-talk operation of half-duplex wireless device Disclosed herein is a communications system implementing a headset wirelessly connected to a half-duplex communications device, such as a two-way radio or a radio-simulating cellular phone. The headset may incorporate a transmit/receive switch wherein a transmit sig... | 10/19/2010 |
| 7574173 | Wireless communication over a transducer device One aspect of the present invention is generally directed towards a system and method of tuning a transducer for transmitting and receiving a wireless signal. In an illustrative embodiment, a single transducer is coupled to a first or second circuit for either trans... | 08/11/2009 |
| 7565187 | Transceiver device and fastener An apparatus for portable communications including a wireless headset, attachment that mechanically and electrically connects to a cellular phone or other electronic device, and a base unit that includes an attachment interface to connect mechanically and electrical... | 07/21/2009 |
| 7532901 | Methods and apparatus to detect location and orientation in an inductive system A base station (e.g., a central device including a transducer assembly of one or more orthogonal transducers) transmits a magnetic field at a known power level and direction. The magnetic field signal includes data information transmitted from the base station to a ... | 05/12/2009 |
| 7149552 | Wireless headset for communications device Disclosed herein is a communications system implementing a headset wirelessly connected to a half-duplex communications device, such as a two-way radio or a radio-simulating cellular phone. The headset may incorporate a transmit/receive switch wherein a transmit sig... | 12/12/2006 |
