Integrated cellular telephone and vehicular audio system

  • US 5,243,640 A
  • Filed: 09/06/1991
  • Issued: 09/07/1993
  • Est. Priority Date: 09/06/1991
  • Status: Expired due to Term
First Claim
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1. Apparatus for interfacing a shared output transducer with a program audio source and a telephone comprising:

  • input means for receiving program audio signals from said program audio source and phone audio signals from said telephone;

    output means coupled to said input means for selectably coupling said program audio signals or said phone audio signals to said shared output transducer or for selectably coupling simultaneously both said program audio signals and said phone audio signals to said shared output transducer; and

    control means coupled to said input means and said output means for selecting said program audio signals and said phone audio signals simultaneously when said program audio source and said telephone are both in use and a call is not in progress and for selecting only said phone audio signals when a call is in progress.

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