Apparatus for hands-free operation of a mobile telephone unit in

Details Apparatus for hands-free operation of a mobile telephone unit in Apparatus for hands-free operation of a mobile telephone unit in

1994-11-28

1996-02-06

Hofsass, Jeffery A.

Telephonic communications

Terminal accessory or auxiliary equipment

With circuit connection to terminal

379420, 379426, 379454, 379455, H04M 100

Patent

active

054902134

ABSTRACT:
An apparatus for permitting hands-free operation of a mobile telephone unit in a car includes a wireless microphone transmitter for generating wireless outgoing signals corresponding to sounds picked up in the passenger room of a car, and a main terminal which has a terminal housing with one end adapted to be inserted into a cigarette lighter socket of the car. A receiver circuit is disposed in the terminal housing and is capable of receiving the wireless outgoing signals from the transmitter. A telephone connector is adapted to be connected electrically to the mobile telephone unit and enables the mobile telephone unit to receive the wireless outgoing signals from the receiver circuit and transmit wirelessly the wireless outgoing signals. Wireless incoming signals received by the mobile telephone unit are received by a loudspeaker in the terminal housing. The loudspeaker generates an acoustic output corresponding to the wireless incoming signals. A set of electrical contacts on the one end of the terminal housing connects electrically the receiver circuit and the loudspeaker to a car battery of the car via the cigarette lighter socket.

REFERENCES:
patent: 5313514 (1994-05-01), Kanasashi

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