Abstract: Audio video synchronization begins by receiving an audio-video signal via a first communication path. The processing continues by capturing a representation of an audio component of the audio-video signal, wherein the audio component was rendered audible via a second communication path. The processing continues by deriving a reference representation of the audio component of the audio-video signal received via the first communication path. The processing continues by aligning a video component of the audio video-signal of the first communication path with the audio component of the audio video signal of the second communication path based on the representation of the audio component and the reference representation of the audio component.

Abstract: Audio video synchronization begins by receiving an audio-video signal via a first communication path. The processing continues by capturing a representation of an audio component of the audio-video signal, wherein the audio component was rendered audible via a second communication path. The processing continues by deriving a reference representation of the audio component of the audio-video signal received via the first communication path. The processing continues by aligning a video component of the audio video-signal of the first communication path with the audio component of the audio video signal of the second communication path based on the representation of the audio component and the reference representation of the audio component.

Abstract: A system is provided for transmitting data to a plurality of devices. A data source receives data from a video broadcasting source, such as a digital television provides, through a data cable. The data source identifies devices to receive particular sets of data, such as particular programs, from the data cable. The data source identifies particular settings for transmitting to particular devices. The data source adjusts a transmission power to a first device to efficiently provide data reliably to the first device. The data source can assign more or less power for transmitting data to the first device. The data source provides data to the source device using a first data channel. The data source provides data to a second device using a second data channel. The data source receives acknowledgements and control information from the first device and the second device using the second data channel.

Abstract: A system and method for communicating with a plurality of devices are disclosed. One embodiment of the method includes transmitting a first plurality of sets of data on a plurality of data channels to a plurality of devices, wherein each of the first plurality of sets of data has a corresponding channel from the plurality of data channels and is transmitted to a corresponding device of the plurality of devices, and receiving a second plurality of sets of data on at least one of the plurality of data channels, wherein the second plurality of sets of data is sent by the plurality of devices, and wherein each of the second plurality of sets of data has a corresponding device of the plurality of devices. The second plurality of sets of data can include an acknowledgement from its corresponding device of the reception of at least one of the first plurality of data sets. Further, different channels of the plurality of data channels can include separate bands of frequencies.