Patent ID: 8327411
Filing Date: 2012-12-04
Classification: H04N

Abstract:
1. A method associated with minimizing random-access latency to a compressed source video data stream which is characterized with one decoder access latency and one spatial resolution, said method comprising: engaging such a source video data stream; deriving, from that engaged data stream, two, broadcastable, downstream-deliverable video data streams that are characterized by differing, respective decoder access latencies and spatial resolutions, one of which broadcastable, downstream-deliverable video data streams is characterized, relatively speaking, by a low decoder access latency and a low spatial resolution, and the other of which is characterized, in comparison, by a higher decoder access latency and a higher spatial resolution, wherein, relatively speaking, said low decoder access latency is associated with more closely spaced I-frames in said one broadcastable, downstream-deliverable video data stream in comparison to more widely separated I-frames in said other broadcastable, downstream-deliverable video data stream; and transmitting said two, broadcastable, downstream-deliverable video data streams using a first communication channel, wherein said transmitting comprises multiplexing said two, broadcastable, downstream-deliverable video data streams with a time-offset relative to each other, wherein said one broadcastable, downstream-deliverable video stream is delayed relative to said other broadcastable, downstream-deliverable video stream.