Wireless audio and video signal transmitter and receiver system apparatus
First Claim
1. A wireless audio and video signal transmitter and receiver system capable of accepting both external baseband audio and video signal inputs and an external modulated audio/video signal input modulated at a particular television channel, wherein the transmitter transmits an audio/video signal to one or more remote receivers which regenerate the original audio/video signal providing both baseband audio and video signal outputs as well as a modulated audio/video signal output at said particular television channel, said wireless audio/video signal transmitter and receiver system comprising:
- transmitter means for connection to audio/video signal sources and are capable of accepting said external modulated audio/video signal input as well as said external baseband audio and video signal inputs, said transmitter means including;
modulated audio/video signal input means for permitting an external audio/video modulated signal to be connected to said transmitter means, said modulated audio/video signal input means serving to convert said external modulated audio/video signal into a first internal baseband video signal and a first internal audio subcarrier signal corresponding to said external modulated audio/video signal input;
baseband audio signal input means for permitting an external baseband audio signal to be connected to said transmitter means, said baseband audio signal input means serving to convert said external baseband audio signal into a second internal audio subcarrier signal;
baseband video signal input means for permitting an external baseband video signal source to be connected to said transmitter means, said baseband video signal input means providing as an output a second internal baseband video signal;
video/RF switch means operably and electrically connected to said modulated audio/video signal input means, said baseband audio signal input means and said baseband video signal input means, said video/RF switch means serving to permit the selection between said first internal audio subcarrier signal and said second internal audio subcarrier signal, and said first internal baseband video signal and said second internal baseband video signal, thus providing for the alternative selection by the user between said external modulated audio/video signal input and said external baseband audio/video signal input in a manner which obviates the need for the use of an RF switch;
said video/RF switch means providing an audio subcarrier audio signal output and a baseband video signal output;
video filter means operably and electrically connected to said baseband video signal output of said video/RF switch means providing a filtered video signal output;
AM modulator means electrically connected to said audio subcarrier signal output of said video/RF switch means and said filtered video signal output of said video filter means, said AM modulator means serving to AM modulate both said filtered video signal output and audio subcarrier signal output towards converting said signal outputs to a modulated IF frequency signal;
up converter means electrically connected to said AM modulator means for converting said modulated IF frequency signal to an RF frequency signal;
RF amplifier means electrically connected to said up converter means for amplifying said RF frequency signal;
transmitter antenna means electrically connected to said RF amplifier means for transmitting said amplified RF signal;
one or more receiver means capable of providing an external modulated audio/video signal output as well as external baseband audio signal and baseband video signal outputs, said one or more receiver means each including;
receiver antenna means for receiving said amplified RF signal transmitted by said transmitter means;
receiver front end means electrically connected to said receiver antenna means for amplifying and filtering said received RF signal;
down converter means electrically connected to said receiver antenna means, said down converter means serving to convert said received RF signal to an IF signal having a frequency corresponding to the carrier frequency for said modulated IF frequency signal;
receiver filter means electrically connected to said down converter means providing a filtered IF signal output;
modulated audio/video signal output means electrically connected to said receiver filter means for providing a modulated audio/video signal output on said particular television channel;
modulated audio/video signal demodulator means electrically connected to said receiver filter means, said modulated audio/video signal demodulator means serving to provide a composite audio and video output signal;
baseband audio signal output means, electrically connected to said modulated audio/video signal demodulator means, for providing a baseband audio signal output; and
baseband video signal output means, electrically connected to said modulated audio/video signal demodulator means, for providing a baseband video signal output;
whereby said wireless audio/video signal transmitter and receiver system permits the wireless transmission and remote reception of audio/video signals from a signal source such as a VCR to a reception device such as a television monitor.
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Accused Products
Abstract
A wireless audio and video signal transmitter and receiver system apparatus capable of accepting both external baseband audio and video signal inputs and a modulated external audio/video signal modulated at a particular television channel. A transmitter transmits an audio/video signal to one or more remote receivers which regenerate the original audio/video signal providing both baseband audio and video signal outputs as well as a modulated audio/video signal output at the particular television channel. The transmitter includes a modulated audio/video signal input section and baseband audio and video signal input sections which provide audio sub-carrier and video baseband signals to a video/RF switch which permits the user to select between modulated and baseband inputs to the transmitter. The audio/video signal is AM modulated and up converted before being transmitted to the receiver. The receiver down converts the received audio/video signal and through which a modulated audio/video signal output section connected to baseband audio and video signal output sections serves to provide both modulated and baseband audio/video signal outputs.
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Citations
21 Claims
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1. A wireless audio and video signal transmitter and receiver system capable of accepting both external baseband audio and video signal inputs and an external modulated audio/video signal input modulated at a particular television channel, wherein the transmitter transmits an audio/video signal to one or more remote receivers which regenerate the original audio/video signal providing both baseband audio and video signal outputs as well as a modulated audio/video signal output at said particular television channel, said wireless audio/video signal transmitter and receiver system comprising:
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transmitter means for connection to audio/video signal sources and are capable of accepting said external modulated audio/video signal input as well as said external baseband audio and video signal inputs, said transmitter means including; modulated audio/video signal input means for permitting an external audio/video modulated signal to be connected to said transmitter means, said modulated audio/video signal input means serving to convert said external modulated audio/video signal into a first internal baseband video signal and a first internal audio subcarrier signal corresponding to said external modulated audio/video signal input; baseband audio signal input means for permitting an external baseband audio signal to be connected to said transmitter means, said baseband audio signal input means serving to convert said external baseband audio signal into a second internal audio subcarrier signal; baseband video signal input means for permitting an external baseband video signal source to be connected to said transmitter means, said baseband video signal input means providing as an output a second internal baseband video signal; video/RF switch means operably and electrically connected to said modulated audio/video signal input means, said baseband audio signal input means and said baseband video signal input means, said video/RF switch means serving to permit the selection between said first internal audio subcarrier signal and said second internal audio subcarrier signal, and said first internal baseband video signal and said second internal baseband video signal, thus providing for the alternative selection by the user between said external modulated audio/video signal input and said external baseband audio/video signal input in a manner which obviates the need for the use of an RF switch;
said video/RF switch means providing an audio subcarrier audio signal output and a baseband video signal output;video filter means operably and electrically connected to said baseband video signal output of said video/RF switch means providing a filtered video signal output; AM modulator means electrically connected to said audio subcarrier signal output of said video/RF switch means and said filtered video signal output of said video filter means, said AM modulator means serving to AM modulate both said filtered video signal output and audio subcarrier signal output towards converting said signal outputs to a modulated IF frequency signal; up converter means electrically connected to said AM modulator means for converting said modulated IF frequency signal to an RF frequency signal; RF amplifier means electrically connected to said up converter means for amplifying said RF frequency signal; transmitter antenna means electrically connected to said RF amplifier means for transmitting said amplified RF signal; one or more receiver means capable of providing an external modulated audio/video signal output as well as external baseband audio signal and baseband video signal outputs, said one or more receiver means each including; receiver antenna means for receiving said amplified RF signal transmitted by said transmitter means; receiver front end means electrically connected to said receiver antenna means for amplifying and filtering said received RF signal; down converter means electrically connected to said receiver antenna means, said down converter means serving to convert said received RF signal to an IF signal having a frequency corresponding to the carrier frequency for said modulated IF frequency signal; receiver filter means electrically connected to said down converter means providing a filtered IF signal output; modulated audio/video signal output means electrically connected to said receiver filter means for providing a modulated audio/video signal output on said particular television channel; modulated audio/video signal demodulator means electrically connected to said receiver filter means, said modulated audio/video signal demodulator means serving to provide a composite audio and video output signal; baseband audio signal output means, electrically connected to said modulated audio/video signal demodulator means, for providing a baseband audio signal output; and baseband video signal output means, electrically connected to said modulated audio/video signal demodulator means, for providing a baseband video signal output; whereby said wireless audio/video signal transmitter and receiver system permits the wireless transmission and remote reception of audio/video signals from a signal source such as a VCR to a reception device such as a television monitor. - View Dependent Claims (2, 3, 4, 5, 6, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 20)
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7. The wireless audio and video signal transmitter and receiver system according to claim wherein said baseband video signal input means comprises:
baseband video signal input connector for accepting connection of said external baseband video signal. - View Dependent Claims (21)
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12. The wireless audio and video signal transmitter and receiver system according to claim wherein said RF amplifier means comprises RF section bandpass filter electrically connected to said up converter means, RF section matching pad electrically connected to said RF section bandpass filter, RF section amplifier electrically connected to said RF section matching pad;
- combination highpass/notch filter electrically connected to said RF section matching pad;
RF section matching amplifier means electrically connected to said combination highpass/notch filter; and
RF section lowpass filter electrically connected to said RF section matching amplifier means.
- combination highpass/notch filter electrically connected to said RF section matching pad;
Specification