Patent ID: 9131281
Filing Date: 2015-09-08
Classification: H04H,H04N

Abstract:
1. A method for multiplexing and broadcasting a plurality of video streams by embedding one or more digital audio parts in at least one video stream of the plurality of video streams, the method comprising: receiving a plurality of sets of spatially multiplexed video streams, wherein a frame rate of each video stream of the plurality of sets of spatially multiplexed video streams is reduced to half of an original frame rate; generating an audio data bit and an audio pilot bit using metadata associated with one or more digital audio parts; converting the audio data bit into an audio data symbol and the audio pilot bit into an audio pilot symbol; embedding the audio data symbol and the audio pilot symbol into a video frame of a video stream of the plurality of sets of spatially multiplexed video streams; embedding each digital audio part into respective video streams of the plurality of sets of spatially multiplexed video streams, wherein each digital audio part, corresponding to a respective video stream, is to be retrieved at a receiving device using the audio data symbol and the audio pilot symbol; multiplexing, in a temporal domain, the plurality of sets of spatially multiplexed video streams comprising the one or more digital audio parts, the audio data symbol and the audio pilot symbol, so embedded, to generate an elementary video stream thereby achieving the original frame rate; and broadcasting the elementary video stream via a single video channel.