The Directv Group, Inc.

Directv, LLC

Dennis M Hardwick

Alan Smith

Johnny Shum

Sassan Pejhan

A method and system for synchronizing an audio signal and a video signal includes a source device receiving an audio-video signal comprising the audio signal and the video signal. The video signal has a video time stamp. The source device communicates the audio signal from the source device to a first sink device through a wireless network with a second time stamp and communicates the video signal to the second sink device with the video time stamp. The second sink device generates a synchronization (synch) signal and communicates the synch signal to the first sink device. The first sink device compares the synch signal to the second time stamp, adjusts a relative timing of the playback of the audio signal in response to comparing and generates an audible signal from the audio signal.

Method and system for synchronizing playback of independent audio and video streams through a network

A predetermined set of channels from a satellite broadcast are received and tuned in parallel at a head end module of a local area network, which potentially serves a large number of users with electronic devices via multiple wired and/or wireless access points, such as at a college campus or a business center. Each channel of content is transcoded into multiple content streams providing multiple bit-rate options for each channel of content, e.g., using HTTP Adaptive Streaming protocols and/or Scalable Video Coding. The transcoded content streams are packetized and transmitted with respective multicast IP addresses to the access points on the local area network. Electronic devices connected to an access point are able to stream content from any one of the predetermined set of channels by joining one or more corresponding multicasts.

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Huntington Beach, CA, United States of America

Dennis M Hardwick