SYSTEM FOR ALLOWING SELECTIVE LISTENING ON MULTIPLE TELEVISIONS
First Claim
Patent Images
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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Accused Products
Abstract
Provided is an audio transmission system for use in environments having multiple televisions. An audio transmitter couples to a television via the television'"'"'s audio output jack and frequency modulates the audio signal for transmission on a user selected channel. An audio receiver receives the frequency modulated audio signal and extracts the audio signal. The audio receiver may be charged in a charging station.
26 Citations
21 Claims
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1. A system for transmitting audio comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An audio transmission system comprising:
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a first audio transmitter having; a first audio input jack coupled to a first audio output jack of a first television for receiving a first audio signal from the first television; a first transmission circuit configured to transmit the first audio signal as a first frequency modulated signal that is modulated at a first frequency; and a plurality of first infrared emitters configured to broadcast the first frequency modulated signal; a second audio transmitter having; a second audio input jack coupled to a second audio output jack of a second television for receiving a second audio signal from the second television; a second transmission circuit configured to transmit the second audio signal as a second frequency modulated signal that is modulated at a second frequency that is different than the first frequency; and a plurality of second infrared emitters configured to broadcast the second frequency modulated signal; a first receiver having; a plurality of first infrared detectors configured to receive the first and second frequency modulated signals and to convert the first and second frequency modulated signals to an electrical current; a first reception circuit configured to retrieve the first audio signal from the electrical current representing the first frequency modulated signal based on a setting selected by a first user; and a first audio output port configured to provide the first audio signal to the first user; and a second receiver having; a plurality of second infrared detectors configured to receive the first and second frequency modulated signals and to convert the first and second frequency modulated signals to the electrical current; a second reception circuit configured to retrieve the second audio signal from the electrical current representing the second frequency modulated signal based on a setting selected by a second user; and a second audio output port configured to provide the second audio signal to the second user. - View Dependent Claims (17, 18, 19, 20)
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21. An audio transmission system comprising:
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a first audio transmitter having; a first audio input jack coupled to a first audio output jack of a first television for receiving a first audio signal from the first television; a first transmission circuit configured to transmit the first audio signal as a first frequency modulated signal that is modulated at a first frequency; and a plurality of first emitters configured to broadcast the first frequency modulated signal; a second audio transmitter having; a second audio input jack coupled to a second audio output jack of a second television for receiving a second audio signal from the second television; a second transmission circuit configured to transmit the second audio signal as a second frequency modulated signal that is modulated at a second frequency that is different than the first frequency; and a plurality of second emitters configured to broadcast the second frequency modulated signal; and a receiver having; a plurality of detectors configured to receive the first and second frequency modulated signals and to convert at least the first frequency modulated signal to an electrical current; a reception circuit configured to retrieve the first audio signal from the electrical current representing the first frequency modulated signal; and an audio output port configured to provide the first audio signal to an external audio device.
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Specification