Method and apparatus for modulating video signals
View Patent ↗A luminance component of a video signal is modulated in a first frequency band. A chrominance component of the video signal is modulated in a second frequency band. The modulated luminance component and the modulated chrominance component are then transmitted across a communication link.
1. A method comprising:
modulating a luminance component of a video signal, wherein the luminance component of the video signal is modulated in a first frequency band;
modulating a first chrominance component of the video signal, wherein the first chrominance component of the video signal is modulated in a second frequency band;
modulating a second chrominance component of the video signal, wherein the second chrominance component of the video signal is modulated in a third frequency band;
transmitting the modulated luminance component of the video signal, the first modulated chrominance component of the video signal, and the second modulated chrominance component of the video signal across a communication link; and
combining an audio signal with the first modulated chrominance component of the video signal.
2. A method as recited in claim 1 wherein the video signal is a component video signal.
3. A method as recited in claim 1 wherein the communication link is a single transmission line.
4. A method as recited in claim 1 wherein the communication link is a wireless communication link.
5. A method as recited in claim 1 further comprising determining a transmission delay to a demodulator.
6. One or more computer-readable media comprising computer-executable instructions that, when executed, direct a computing system to perform the method of claim 1 .
7. A method comprising:
receiving a signal containing a modulated luminance component, a first modulated chrominance component, and a second modulated chrominance component;
demodulating the modulated luminance component;
demodulating the first modulated chrominance component;
demodulating the second modulated chrominance component;
generating a video signal containing the luminance component, the first chrominance component, and the second chrominance component; and
separating an audio signal from the first modulated chrominance component.
8. A method as recited in claim 7 wherein the video signal is a component video signal.
9. A method as recited in claim 7 further comprising communicating the video signal to a display device.
10. One or more computer-readable media comprising computer-executable instructions that, when executed, direct a computing system to perform the method of claim 7 .
11. An apparatus comprising:
a first oscillator configured to modulate a luminance component of a video signal in a first frequency band;
a second oscillator configured to modulate a chrominance component of a video signal in a second frequency band;
a transmitter coupled to the first oscillator and the second oscillator, the transmitter configured to transmit the modulated luminance component and the modulated chrominance component across a communication link; and
a tone generator coupled to the transmitter, wherein the tone generator is configured to generate a tone that is transmitted to a demodulator to determine the delay transmitting signals to the demodulator.
12. An apparatus as recited in claim 11 further comprising a channel selector coupled to the transmitter and configured to select the first frequency band and the second frequency band.
13. An apparatus as recited in claim 11 further comprising a delay generator coupled to the transmitter and configured to delay transmission of one of the components of the video signal.