Hand-free receiver signal wire for mobile telephone

Abstract

A signal wire connecting between a hand-free receiver and a mobile telephone includes a first side having a hand-free receiver plug co-operating with the hand-free receiver so as to be connected to the main circuit of the hand-free receiver, and a second side having a mobile telephone plug co-operating with the output receptacle of the mobile telephone so as to be connected to the mobile telephone. In such a manner, the mobile telephone plug includes a voltage control leg provided with a first branch resistor which is adapted to match the power supply circuit of the hand-free receiver to obtain the exact voltage supply value of the mobile telephone, which can be outputted to the power supply input leg of the mobile telephone to function as the power supply of the mobile telephone. In addition, the mobile telephone plug includes a mobile telephone voice output leg provided with a second branch resistor which is adapted to output the voice from the mobile telephone to the voice signal of the input side of the voice amplifying circuit of the hand-free receiver so as to obtain a determined value of the voice signal such that the voice amplifying circuit of the hand-free receiver operates precisely.

Dependencies are inferred from the claim text.