Patent ID: 7647080
Filing Date: 2010-01-12
Classification: H04B

Abstract:
1. A hands-free device for providing hands-free communications with a cellular telephone/two-way radio, comprising: a power supply wire; an audio in wire; an audio out wire; a ground wire; a circuit board attached to, and electrically coupled to, the power supply wire, the audio in wire, the audio out wire, and the ground wire; a speaker; a switch assembly having a switch; an audio amplifier attached to the circuit board, and electrically coupled to the power supply wire, and electrically coupled to the ground wire, and electrically coupled to the speaker, wherein the audio amplifier is electrically coupled to the speaker through the switch assembly; means for coupling the hands-free device to the cellular telephone/two-way radio; means, coupled to the audio amplifier, for providing hands-free communications both when the cellular telephone/two-way radio is in a half-duplex communications mode, and when the cellular telephone/two-way radio has established full duplex cellular telephone communications; and means, coupled to the audio amplifier, for instructing the cellular telephone/two-way radio to transmit in the half-duplex communications mode for two-way radio communications, and for instructing the cellular telephone/two-way radio to commence full-duplex communications.