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SYSTEM FOR ALLOWING SELECTIVE LISTENING ON MULTIPLE TELEVISIONS

  • US 20100310089A1
  • Filed: 06/04/2009
  • Published: 12/09/2010
  • Est. Priority Date: 06/04/2009
  • Status: Active Grant
First Claim
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1. A system for transmitting audio comprising:

  • an audio transmitter configured to couple to a television, the transmitter having;

    an input audio port configured to receive an audio signal only from an output audio port of the television;

    a transmission channel switch having a plurality of transmission settings selectable by a first user, wherein each of the plurality of transmission settings corresponds to a different predefined frequency;

    transmission circuitry coupled to the transmission channel switch and input audio port, the transmission circuitry being configured to generate a frequency modulated signal representing the audio signal, wherein a frequency used to modulate the signal corresponds to a transmission setting of the transmission channel switch selected by the first user; and

    a plurality of optical transmitters coupled to the transmission circuitry and positioned to transmit the generated frequency modulated signal as light out of the transmitter; and

    an audio receiver having;

    a plurality of optical receivers configured to receive the generated frequency modulated signal transmitted as light by the audio transmitter and to convert the received signal into an electrical current;

    a reception channel switch having a plurality of reception settings selectable by a second user, wherein each of the plurality of reception settings corresponds to one of the transmission settings, and wherein the reception settings are each associated with the frequency of the corresponding transmission setting;

    reception circuitry coupled to the optical receivers and the reception channel switch, wherein the reception circuitry is configured to recover the audio signal from the electrical current based on a reception setting selected by the second user; and

    an output port configured to provide the recovered audio to a second user.

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