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1. 发明申请

WO2006111063A1 基于纠删码的数据传输保护方法审中-公开
公开(公告)号：WO2006111063A1
公开(公告)日：2006-10-26
申请号：PCT/CN2006/000389
申请日：2006-03-14
申请人：华为技术有限公司 , 罗忠 , 宋彬 , 常义林
发明人：罗忠 , 宋彬 , 常义林
IPC分类号： H03M13/00
CPC分类号： H03M13/1102 , H03M13/3761
摘要：本发明提供一种基于纠删码的数据传输保护方法，其核心为：设置仅具有一层校验节点层的纠删码，并根据所述纠删码进行数据传输保护。本发明在确保数据传输保护能力没有显著下降的情况下，通过设置仅具有一层校验节点层的纠删码，从而有效减少了纠删码生成校验节点层的运算量，大大降低了数据传输的延时，使数据传输保护的性价比得到提高，进而使本发明的数据传输保护方法能够很好地适用于H.263以及H.264等技术领域，提高了数据传输的效率，并且促进了H.264等新技术的应用。

2. 发明申请

WO2006111087A1 基于H.264的压缩视频传输误码消除方法审中-公开
公开(公告)号：WO2006111087A1
公开(公告)日：2006-10-26
申请号：PCT/CN2006/000722
申请日：2006-04-19
申请人：华为技术有限公司 , 罗忠 , 宋彬 , 常义林 , 周宁兆
发明人：罗忠 , 宋彬 , 常义林 , 周宁兆
IPC分类号： H04N7/64
CPC分类号： H04N19/89 , H04N19/107 , H04N19/164 , H04N19/174 , H04N19/61
摘要： The present invention discloses an error eliminating method for compressed video transmission, and further discloses such an error eliminating method based on H.264 for compressed video transmission that error can be eliminated in an uncomplicated and highly efficient way. In the present invention, error elimination is realized by an error information feedback mechanism combined with error concealment and error propagation restraint. Error generation is detected via the NALU sequence number and the information carrying Slice, and the error information statistics e.g. the position of the lost data is analyzed. By defining the extended SEI message, the internal feedback path for the error information is established in a H.264 system. By performing intra-frame encoding refreshment for the slices divided up time by time, error propagation restraint is realized.

3. 发明申请

WO2006105713A1 基于H.264的视频传输保护方法审中-公开
公开(公告)号：WO2006105713A1
公开(公告)日：2006-10-12
申请号：PCT/CN2006/000536
申请日：2006-03-29
申请人：华为技术有限公司 , 罗忠 , 宋彬 , 周宁兆 , 常义林
发明人：罗忠 , 宋彬 , 周宁兆 , 常义林
IPC分类号： H04N7/14
CPC分类号： H03M13/353 , H03M13/373 , H03M13/3761 , H04N7/147 , H04N7/148 , H04N19/102 , H04N19/166 , H04N19/61 , H04N19/89
摘要： The invention discloses video transmission protection technique, especially a video transmission protection method based on H.264, so that video stream protection strategy can be adjusted adaptively according to network communication condition, thus it achieves high efficiency and high reliability of video transmission effect. In the invention, receiver counts communication quality and feeds it back to transmitter, then the transmitter adaptively adjust protection strategy; the receiver counts accumulated packet-lost rate and position information of lost data according to discontinuous situation of NALU sequence number; the receiver feeds statistic information back to the transmitter by expansion of SEI message; the transmitter sets two groups of protection strategy series to protect key data and non-key data separately, and selects appropriate level of protection strategy according to fedback accumulated packet-lost rate; the receiver sends position information of lost data back to the transmitter, then the transmitter retransmits these lost data.

4. 发明申请

WO2007025476A1 多媒体通信的传输保护方法审中-公开
公开(公告)号：WO2007025476A1
公开(公告)日：2007-03-08
申请号：PCT/CN2006/002232
申请日：2006-08-30
申请人：华为技术有限公司 , 罗忠 , 杨付正 , 万帅 , 常义林
发明人：罗忠 , 杨付正 , 万帅 , 常义林
IPC分类号： H04N7/24
CPC分类号： H04N19/89 , H04N19/467
摘要： An transport protection method for multimedia video or still image communication in multimedia communication field, can improve quality of multimedia communication service with the precondition of no burden increase of communication systems or network. Wherein, the key data information is concealed in encoded key-not data information in the compressed images by using digital watermark technique; and the normally transmitted key data is detected right or not through the key data protection backup protected by digital watermarks, therefore, error in transport can be detected; the blocks at the same position in the fore-and-aft block groups are performed reciprocal backup circularly; the motion vector is performed encode, then is embedded into the DCT transform coefficients correspondingly unimportant with form of digital watermark, at the same time, it must ensure the video data not to be influenced as possible; when happened error, if the key data backup is right, it will be used to displace the original key data directly, if not, the average value of the neighbor block key data in the same frame will be used to displace the original key data approximatively.

5. 发明申请

WO2007000103A1 一种多媒体视频通信的质量检测方法审中-公开
公开(公告)号：WO2007000103A1
公开(公告)日：2007-01-04
申请号：PCT/CN2006/001433
申请日：2006-06-23
申请人：华为技术有限公司 , 杨付正 , 罗忠 , 万帅 , 常义林
发明人：杨付正 , 罗忠 , 万帅 , 常义林
IPC分类号： H04N1/56
CPC分类号： H04N17/004 , G06T1/0028 , G06T2201/0051 , G06T2201/0061 , G06T2201/0083 , G06T2201/0202
摘要： A method for detecting the quality of the multimedia communication is disclosed. Sais method objectively represents the quality of the multimedia communication by inserting and extracting the watermark without the influence of the quality of the multimedia video data. Every frame of the multimedia data is uniformly blocked and the watermark is inserted to every block to realize the uniform distribution of the watermark. The multimedia data is multiframe grouped and the watermark is inserted into part frames of the every group with equal interval to further reduce the influence of the watermark to the data. The watermark information is directly inserted into the spatial domain of the original multimedia data. The PSNR of the multimedia data is fitted with the accuracy rate of the comparison of the recovered watermark and the original watermark as the measurement standard of quality of the multimedia communication. A post-processing is made on the video image after extracting the watermark, such as smoothed filtering, to remove the influence of the watermark to the multimedia data.

6. 发明申请

WO2006133613A1 一种降低图像方块效应的方法审中-公开
公开(公告)号：WO2006133613A1
公开(公告)日：2006-12-21
申请号：PCT/CN2006/000650
申请日：2006-04-11
申请人：华为技术有限公司 , 罗忠 , 杨付正 , 万帅 , 常义林
发明人：罗忠 , 杨付正 , 万帅 , 常义林
IPC分类号： H04N7/30 , G06T9/00 , G06T5/00
CPC分类号： H04N19/527
摘要：本发明公开了一种降低图像方块效应的方法，该方法包括以下步骤：A．在当前图像中选取需要处理的图像块，并确定量化后的DCT系数的取值范围；B．根据所选取的图像块及其相邻图像块的像素值，在所述取值范围内调整所选取的图像块的量化后的DCT系数，得到量化结果；C．根据所述量化结果继续进行图像的压缩编码。本发明根据DCT变换的性质调整DCT系数的量化以降低方块效应，有效改善了视频的主观质量和客观质量，而且不会引入额外的视频模糊。本发明方法中的算法计算复杂度较低，提高了处理的效率。另外，本发明的方法与标准兼容，不需要对解码器做任何调整；在降低方块效应的同时，不会损伤图像的细节。

7. 发明申请

WO2007045141A1 支持容错弹性的多媒体数据传送方法审中-公开
公开(公告)号：WO2007045141A1
公开(公告)日：2007-04-26
申请号：PCT/CN2006/001846
申请日：2006-07-25
申请人：华为技术有限公司 , 罗忠 , 宋彬
发明人：罗忠 , 宋彬
IPC分类号： H04L12/54 , H04N7/24 , H04L29/06
CPC分类号： H04L1/0009 , H04L1/0017 , H04L65/80
摘要： A method for supporting multimedia data transmission with error resilience is disclosed, thereby the error resilience mechanism of multimedia data real-time transmission can be realized on the transmission protocol layer. In present invention, at first, it provides multimedia data real-time transmission by providing the ERRTP protocol which carrying information about the forward error correction(FEC) coding manner to the exist RTP protocol, so that it can mark the information about the corresponding FEC coding manner for multimedia data at the same time it is transmitted on ERRTP, thereby the error resilience mechanism can be introduced in transmission layer. Next, each standby FEC coding manner can be selected according to present network condition and the level of importance about the multimedia data at transmitting end, so that it can achieve the purpose of protect based on the level, and can realize the equilibrium about the protect ability and the transmission efficiency.

8. 发明申请

WO2009155773A1 下一代网络中传输多媒体业务的方法、系统、及媒体网关、媒体网关控制器审中-公开
公开(公告)号：WO2009155773A1
公开(公告)日：2009-12-30
申请号：PCT/CN2009/000299
申请日：2009-03-19
申请人：华为技术有限公司 , 罗忠 , 郭春芳 , 宋彬 , 蒋小兵
发明人：罗忠 , 郭春芳 , 宋彬 , 蒋小兵
IPC分类号： H04L29/06
CPC分类号： H04L65/80 , H04L65/1043 , H04L69/40

9. 发明申请

WO2007051425A1 多媒体通信方法及其终端审中-公开
公开(公告)号：WO2007051425A1
公开(公告)日：2007-05-10
申请号：PCT/CN2006/002961
申请日：2006-11-03
申请人：华为技术有限公司 , 罗忠 , 宋彬
发明人：罗忠 , 宋彬
IPC分类号： H04L1/00
CPC分类号： H04L65/608 , H04L1/0025 , H04L1/0029 , H04L1/0079
摘要： A multimedia communication method and the terminal thereof improve the transmission dependability and the communication quality. Based on the existing real-time transmission protocol RTP, the error resilience real-time transmission protocol ERRTP provides the transport layer encapsulation format carrying the error resilience encoding scheme related information, which makes the multimedia data mark the corresponding error resilience encoding scheme information while the multimedia data is transmitted over the ERRTP, thereby integrates the error resilience mechanism into the transport layer; for the private ERRTP encapsulation method and the adapted scheme for the protocol header information given by H.264 network abstract layer unit NALU architecture, the all NALU header information byte in the same ERRTP packet can be integrated into its header information, thereby the NALU important information is embodied in the ERRTP header information and the transmission efficiency is improved; the extended message mechanism of the H.264 itself is used to bear the QoS report information, a "in band" QoS report mechanism of the high layer protocol is implemented, and the additional overhead for using the channel is avoided.

10. 发明申请

WO2007045140A1 一种多媒体数据传送实时方法审中-公开
公开(公告)号：WO2007045140A1
公开(公告)日：2007-04-26
申请号：PCT/CN2006/001845
申请日：2006-07-25
申请人：华为技术有限公司 , 宋彬 , 罗忠
发明人：宋彬 , 罗忠
IPC分类号： H04N7/00 , H04L29/06
CPC分类号： H04L29/06027 , H04L65/608 , H04N21/6437 , H04N21/8451
摘要： A method for real-time transporting H.264 multimedia video data is disclosed, it makes that the RTP protocol could efficiently carry H.264 multimedia video data, and enhances the ensuring mechanism of the service quality on the premise of being compatible with the known apparatus and transport manners with RTP protocol. A modified RTP protocol for carrying H.264 data is disclosed, by combing all header information bytes of H.264 NALU into the header information of RTP packet itself, so as not to affect the action of known RTP protocol and apparatus, and it could directly indicate the attribute of H.264 NALU payload in the MRTP header information; further an identification method for discriminating the known RTP from MRTP is provided, by modifying the relevant fields such as M, F field of the known RTP header information, this makes it possible that the known network media apparatus could support both RTP and MRTP to work, and improves the compatibility of MRTP and the flexibility of application.

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