Content delivery to a digital TV using a low-power frequency converted RF signal
First Claim
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1. A method of operating a system including tuning a transmitter to transmit on open channels comprising:
- receiving signals at an input of a tuner via an antenna;
scanning the tuner across a range of channels, each channel corresponding to a frequency range;
detecting in a first channel, within the range of channels, a signal having a strength below a certain threshold;
receiving non-modulated first data, from at least one content source, to be transmitted;
modulating the first data to generate a first RF signal to make suitable for wireless transmission;
automatically controlling a transmitter to wirelessly transmit the first RF signal in the first channel such that the first RF signal can be received by at least a local first television receiver tuned to the first channel,wherein the first television receiver is tuned to the first channel for wirelessly receiving the first RF signal,receiving non-modulated second data, from the at least one content source, to be transmitted;
modulating the second data to make suitable for wireless transmission; and
automatically controlling the transmitter to wirelessly transmit the modulated second data, simultaneously with transmitting the modulated first data on the first channel, such that the modulated second data can be received by at least a second local television receiver.
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Abstract
A simple antenna is connected to the RF input port on a conventional digital TV to receive video content from a plurality of video content sources wirelessly. The wireless RF transmission by a local transmitter has a range generally limited to within a home or room. The low power RF transmission is on a carrier frequency that is legally authorized by the FCC in frequency and power level. To identify the open channels for the RF transmission, a tuner scans for weak channels, and the transmitter is tuned to transmit on the detected weak channels.
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Citations
22 Claims
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1. A method of operating a system including tuning a transmitter to transmit on open channels comprising:
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receiving signals at an input of a tuner via an antenna; scanning the tuner across a range of channels, each channel corresponding to a frequency range; detecting in a first channel, within the range of channels, a signal having a strength below a certain threshold; receiving non-modulated first data, from at least one content source, to be transmitted; modulating the first data to generate a first RF signal to make suitable for wireless transmission; automatically controlling a transmitter to wirelessly transmit the first RF signal in the first channel such that the first RF signal can be received by at least a local first television receiver tuned to the first channel, wherein the first television receiver is tuned to the first channel for wirelessly receiving the first RF signal, receiving non-modulated second data, from the at least one content source, to be transmitted; modulating the second data to make suitable for wireless transmission; and automatically controlling the transmitter to wirelessly transmit the modulated second data, simultaneously with transmitting the modulated first data on the first channel, such that the modulated second data can be received by at least a second local television receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification