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Communication system for telephone

  • US 6,807,434 B1
  • Filed: 03/09/1999
  • Issued: 10/19/2004
  • Est. Priority Date: 02/01/1999
  • Status: Expired due to Fees
First Claim
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1. A communication system for a mobile or a cellular telephone to be installed inside a car, comprising:

  • a microphone connected by a wire to the mobile or cellular telephone for receiving a first voice signal from a user and then transmitting the first voice signal to the mobile or cellular telephone;

    a transmitter connected to the mobile or cellular telephone for receiving, a second voice signal from the telephone and then converting the second voice signal into a wireless signal so that the wireless signal is broadcast by the transmitter, wherein the transmitter can be an separated unit or a built-in unit in the mobile or cellular telephone; and

    a receiver earphone for picking up the wireless signal from the transmitter and then converting the wireless signal into a third voice signal for hearing by the user, wherein the transmitter and the receiver earphone are coupled in a wireless manner, and the receiver earphone forms a stand-alone unit that is not connected to the microphone.

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