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    • 2. 发明申请
    • METHOD FOR TRANSMITTING MULTIMEDIA DATA IN AD HOC COMMUNICATION NETWORKS
    • 在通信网络中传输多媒体数据的方法
    • US20110131466A1
    • 2011-06-02
    • US12847865
    • 2010-07-30
    • Catherine Lamy-BergotFracchia Roberta
    • Catherine Lamy-BergotFracchia Roberta
    • G06F11/08
    • H04L1/004H04L2001/0097
    • A method for transmitting multimedia data in an ad hoc network including receiving a packet on a radio interface, and if the node is not its destination, is copied into a local buffer Q while awaiting the verification of the packet, the packet is also uploaded to the top layers for on the one hand verification of its possible corruption and on the other hand optional storage in a local stack P of long duration with additional information about the data fragment. In the case where the transmission on the last hop before the current node has corrupted the packet, it is verified that the headers are intact so as to be able to route the packet appropriately, after having verified whether the stack P is present and whether it contains an intact version of the packet, in which case it is the intact payload which will be substituted for the erroneous payload in the buffer Q. If the stack P is not present or does not contain the packet, then the method will nevertheless propagate the packet when only the payload has been corrupted since a robust multimedia decoder might be able to use this packet correctly.
    • 一种用于在自组织网络中传送多媒体数据的方法,包括在无线电接口上接收分组,并且如果节点不是其目的地,则在等待分组的验证的同时被复制到本地缓冲器Q中,则分组也被上传到 顶层可以一方面验证其可能的损坏,另一方面可以在长时间的本地堆栈P中选择性地存储有关数据片段的附加信息。 在当前节点之前的最后一跳的传输已经破坏分组的情况下,验证了报头是完整的,以便能够在验证了堆栈P是否存在之后能够适当地路由分组 包含分组的完整版本,在这种情况下,它将被替换为缓冲区Q中的错误有效载荷的完整的有效载荷。如果堆栈P不存在或不包含分组,则该方法将传播 分组只有有效载荷已被破坏,因为强大的多媒体解码器可能能够正确地使用该分组。
    • 10. 发明授权
    • System and method for determining encoding parameters
    • 用于确定编码参数的系统和方法
    • US08798144B2
    • 2014-08-05
    • US13122568
    • 2009-10-05
    • Catherine Lamy-BergotBenjamin Gadat
    • Catherine Lamy-BergotBenjamin Gadat
    • H04N7/26
    • H04N7/26H04N19/00H04N19/124H04N19/147H04N19/149H04N19/15H04N19/164H04N19/177H04N19/192H04N19/50
    • A method for optimizing a video transmission, in a constrained environment using a video coder adapted for coding the video data to be transmitted, includes determining one or more compression parameters for the video coder considered to transmit the video data at a given throughput or for a given quality. The method defines and uses reference charts for the coder considered, and predicts for the part of the video sequence undergoing compression, using the reference charts, compression parameters to be used, such as the quantization interval, by selecting a chart for which the targeted range of throughput or of quality is the closest in distance to the part of the sequence to be compressed, while complying with a given margin, and updates with an iterative method the prediction step to converge on the best choice of parameterization. The iteration includes at least one compression step followed by a verification step, to compress the video data to be transmitted with the parameters.
    • 一种用于优化视频传输的方法,在受限环境中,使用适于对要发送的视频数据进行编码的视频编码器,包括确定用于以给定吞吐量发送视频数据的视频编码器的一个或多个压缩参数, 给予质量。 该方法定义并使用所考虑的编码器的参考图,并且通过使用参考图,要使用的压缩参数(例如量化间隔)来预测正在进行压缩的视频序列的一部分,通过选择目标范围的图表 吞吐量或质量的距离与要压缩的序列的部分距离最接近,同时遵循给定的边界,并且以迭代方法更新预测步骤以收敛于参数化的最佳选择。 迭代包括至少一个压缩步骤,随后是验证步骤,以压缩要用参数发送的视频数据。