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Untethered microphone and base unit

  • US 5,832,390 A
  • Filed: 07/03/1996
  • Issued: 11/03/1998
  • Est. Priority Date: 07/03/1996
  • Status: Expired due to Term
First Claim
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1. A hands-free mobile radio communication system for use in a vehicle comprising:

  • (a) a base unit including a transceiver for communicating with a base station in a mobile communication network;

    (b) a speaker associated with said base station;

    (c) a speakerless, untethered microphone unit disposed remotely from said base unit and said speaker, said microphone unit including;

    i) a microphone for producing audio signals;

    ii) a wireless transmitter associated with said microphone and adapted to provide untethered transmission of said audio signals produced by said microphone to said base unit;

    iii) a wireless receiver adapted to receive transmitted control signals from said base unit;

    iv) control circuitry operatively associated with said microphone, said transmitter and said receiver, said control circuitry being responsive to control signals transmitted from said base station to control the operation of said microphone unit; and

    v) a power supply to provide electrical energy to power said untethered microphone unit.

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