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71. 发明申请

US20070033494A1 Method, device, and system for forward channel error recovery in video sequence transmission over packet-based network 失效
标题翻译：用于通过基于分组的网络进行视频序列传输的前向信道错误恢复的方法，设备和系统
公开(公告)号：US20070033494A1
公开(公告)日：2007-02-08
申请号：US11196789
申请日：2005-08-02
申请人： Stephan Wenger , Miska Hannuksela , Imed Bouazizi
发明人： Stephan Wenger , Miska Hannuksela , Imed Bouazizi
IPC分类号： H03M13/00
CPC分类号： H04N19/895 , H04N19/147 , H04N19/31 , H04N19/33 , H04N19/61
摘要： Accelerated video decoding makes use of FEC-repaired media packets that become available through FEC decoding later than their intended decoding time, so to re-establish the integrity of the prediction chain between predicted pictures. The decoder state may be stored at the time of reception of an erroneous packet or at the time of identification of a lost packet, and decoding continued. After FEC repair, the last known state of the decoder is restored after the lost/damaged packet(s) is (are) resurrected through FEC, and accelerated decoding accordingly is used. Cycles “reserved” for decoding of a sub-sequence may be utilized. By freezing the decoded frame at the begin of a sub-sequence and decoding coded pictures of the main sequence that are part of the previous FEC block the integrity of the main prediction chain may be established again. Alternatively, cycles from enhancement layer decoding may be used.
摘要翻译：加速视频解码利用FEC解码后的FEC修复媒体包比其预期的解码时间晚，因此重新建立预测图像之间的预测链的完整性。解码器状态可以在接收到错误的分组时或在识别丢失的分组时被存储，并且继续解码。在FEC修复之后，在通过FEC复原丢失/损坏的分组之后恢复解码器的最后一个已知状态，并且相应地使用加速解码。可以使用用于子序列解码的“保留”周期。通过在子序列开始时冻结解码的帧并对作为先前FEC块的一部分的主序列的编码图像进行解码，可以再次建立主预测链的完整性。或者，可以使用来自增强层解码的循环。

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