Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C.
Error correction coding for recovering multiple packets in a group view of limited bandwidth
Coded video data may be transmitted between an encoder and a decoder using multiple FEC codes and/or packets for error detection and correction. Only a subset of the FEC packets need be transmitted between the encoder and decoder. The FEC packets of each FEC group may take, as inputs, data packets of a current FEC group and also an untransmitted FEC packet of a preceding FEC group. Due to relationships among the FEC packets, when transmission errors arise and data packets are lost, there remain opportunities for a decoder to recover lost data packets from earlier-received FEC groups when later-received FEC groups are decoded. This opportunity to recover data packets from earlier FEC groups may be useful in video coding and other systems, in which later-received data often cannot be decoded unless earlier-received data is decoded properly.
Apple Inc.
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Hsi-Jung Hyeonkuk Xiaosong Dazhong Yan
Wu Jeong Zhou Zhang Yang