Patent ID: 9681214
Date: 2017-06-13
CPC Classifications: H03J,H04R

Claim:
1. An apparatus, configured for communicative coupling between an electronic device and a headset, the electronic device having an electronic device processor to receive a radio frequency (RF) signal within a first legacy band or a second legacy band, and the headset comprising a first sound reproduction device for producing audio according to a first input signal, a second sound reproduction device for producing audio according to a second input signal, a first signal conductor communicatively coupled to a first sound reproduction device input and the first input signal, a second signal conductor communicatively coupled to a second sound reproduction device input and the second input signal, and a common conductor communicatively coupled to a first sound reproduction device ground and a second sound reproduction device ground, the apparatus comprising: an isolation circuit, coupled between an audio amplifier output and the first sound reproduction device input and the second sound reproduction device input, the isolation circuit for blocking the RF frequency signals from the audio amplifier and passing audio frequency signals from the audio amplifier; a switch, having a signal input, a switch control input, a first signal output and a second signal output, wherein: a first legacy frequency band matching network communicatively coupled between the first signal output and a first input of a tuner; a second legacy frequency band matching network communicatively coupled to the second signal output and a second input of the tuner; and an adapter processor, communicatively coupled to the switch control input, for generating a switch command according to a channel command received from the device processor; wherein the first legacy frequency band matching network matches an input impedance of the first tuner input with the output impedance of the switch; and wherein the second legacy frequency band matching network matches an input impedance of the second tuner input with the output impedance of the switch.