SYNCHRONIZED RENDERING OF SPLIT MULTIMEDIA CONTENT ON NETWORK CLIENTS
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United States of America Patent
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Jan 5, 2017
app pub date -
Jun 30, 2015
filing date -
Jun 30, 2015
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Abstract
A system is disclosed for rendering a split multimedia content stream associated with a single program among networked playback devices in sync with each other. Splitting multimedia content allows, for example, two viewers of the same movie to hear the audio track in different languages, or presentation of related program information on a second screen. A presentation method disclosed ensures that the same program can be played in full or in part on multiple devices while maintaining audio and video synchronization among the devices. In one embodiment, synchronization is achieved by monitoring network latency and client system latency, and then incorporating latency information into a program clock reference (PCR) signal for transmission to a secondary playback device.
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