Patent ID: 8750385
Filing Date: 2014-06-10
Classification: H04N

Abstract:
1. A method for recovering from data loss in a multicast internet protocol television system, said method comprising: monitoring a first bit rate video data bit stream to determine if there is one of frame loss and damage by a proxy server; multiplexing decoding parameters of a second bit rate video data bit stream, said second bit rate video data bit stream and said first bit rate video data bit stream, if there is one of frame loss and damage, wherein said second bit rate video data bit stream has a lower bit rate than said first bit rate video data bit stream by said proxy server; demultiplexing said first bit rate video data bit stream, said second bit rate video data bit stream and said decoding parameters of said second bit rate video data bit stream by a receiving set top box; decoding said first bit rate video data bit stream to generate a processed first bit rate video data bit stream by said receiving set top box; removing damaged frames from said processed first bit rate video data bit stream by said receiving set top box; decoding said second bit rate video data bit stream using said received decoding parameters to generate a processed second bit rate video data stream, wherein said processed second bit rate video data bit stream has a lower bit rate than said processed first bit rate video data bit stream, by said receiving set top box; up-sampling decoded frames from said processed second bit rate video data bit stream if said processed second bit rate video data bit stream has a lower resolution than said processed first bit rate video data bit stream by said receiving set top box; and merging the decoded and up-sampled frames from said processed second bit rate video data bit stream and said processed first bit rate video data bit stream by said receiving set top box to one of replace and repair one of said lost and damaged frames of said first bit rate video data bit stream.