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1. 发明申请

WO2014026478A1 一种视频会议信号处理的方法、视频会议服务器及系统审中-公开
公开(公告)号：WO2014026478A1
公开(公告)日：2014-02-20
申请号：PCT/CN2013/072264
申请日：2013-03-07
申请人：华为技术有限公司
发明人：郑瑞琴
IPC分类号： H04N7/15 , H04N7/56
CPC分类号： H04N21/233 , H04N7/152 , H04N21/242 , H04N21/4307
摘要：本发明公开了一种视频会议信号处理的方法、视频会议服务器及系统。所述方法根据第一会场终端发送的选看指令将被选看会场的视频流发送给第一会场终端，并且判断第一会场终端当前播放的第一混合音频流是否包含被选看会场的音频流，若否，则生成第二混合音频流并发送给第一会场终端，其中第二混合音频流包含被选看会场对应的部分或者全部音频流，使得第一会场终端播放的音频流跟随视频流，这在一定程度上改善了音频和视频不同步的问题，增强了用户体验。

2. 发明申请

WO0167745A3 SYNCHRONIZATION FOR DIGITAL CABLE NETWORK 审中-公开
标题翻译：数字电缆网络同步
公开(公告)号：WO0167745A3
公开(公告)日：2002-04-04
申请号：PCT/US0106847
申请日：2001-03-02
申请人： AVAZ NETWORKS
发明人： USMAN MOHAMMAD , FUNG DANNY
IPC分类号： G06Q40/00 , H04J3/06 , H04L7/02 , H04N5/04 , H04N5/44 , H04N7/10 , H04N7/173 , H04N7/56
CPC分类号： H04N21/4302 , G06Q40/02 , G06Q40/08 , H04J3/0638 , H04L7/0029 , H04N5/04 , H04N5/4401 , H04N7/10 , H04N7/56 , H04N21/234 , H04N21/2365 , H04N21/242 , H04N21/4305 , H04N21/4347 , H04N21/44 , H04N2007/17372
摘要： A communication system, such as a digital cable network, achieves synchronization using data rate synchronization, clock frequency synchronization, or clock recovery synchronization techniques. The communication system includes a conversion clock at a transmitter and a conversion clock at a receiver. The data rate synchronization techniques adjust data rates by resampling digital data sent from the transmitter to the receiver to compensate for frequency variations in the conversion clocks. The clock frequency synchronization techniques use time stamps to adjust the receiver conversion clock frequency to substantially match the transmitter conversion clock frequency. The clock recovery techniques use a reference clock to adjust the transmitter conversion clock frequency and the receiver conversion clock frequency to be approximately the same.
摘要翻译：诸如数字有线网络的通信系统使用数据速率同步，时钟频率同步或时钟恢复同步技术来实现同步。通信系统包括发射机处的转换时钟和接收机处的转换时钟。数据速率同步技术通过对从发射机发送到接收机的数字数据进行重新采样来调整数据速率，以补偿转换时钟的频率变化。时钟频率同步技术使用时间戳来调整接收机转换时钟频率，使发射机转换时钟频率基本匹配。时钟恢复技术使用参考时钟来调整发射机转换时钟频率和接收机转换时钟频率大致相同。

3. 发明申请

WO99013647A1 DECODING METHOD AND RECORDING MEDIUM CARRYING RECORDED DECODING PROGRAM 审中-公开
标题翻译：解码方法和录音中继录音解码程序
公开(公告)号：WO99013647A1
公开(公告)日：1999-03-18
申请号：PCT/JP1998/003863
申请日：1998-08-28
IPC分类号： H04N7/52 , H04N7/56 , H04N5/928
CPC分类号： H04N21/4341 , H04N21/4143 , H04N21/4307 , H04N21/4392 , H04N21/44004
摘要： When coded video and audio signals are decoded by means of a computer, it becomes considerably difficult to decode the signals in real time depending upon the performance of the used CPU, because the computing amount required per unit time is stupendous. For the audio signals, in addition, such a trouble as the slow-down sound, skipped sound, etc., occur when all the data are not outputted in real time. A decoding method, wherein, when decoding coded video or audio signals by using a PC, audio signals can be reproduced in real time by comparing target decoding ending time for realizing real-time reproduction of the audio signals with actual decoding ending time for every decoding unit and, when the actual decoding ending time is delayed from the target decoding ending time, by temporarily interrupting video signal decoding or lowering the priority of the video signal decoding. A decoding method, wherein scheduling is performed for efficiently performing data input, audio signal decoding, and video signal decoding by using a buffer of at least three frames at the time of decoding coded video or audio signals by using a PC.
摘要翻译：当通过计算机对编码的视频和音频信号进行解码时，由于每单位时间所需的计算量是巨大的，所以根据所使用的CPU的性能实时地对信号进行解码变得相当困难。对于音频信号，此外，当全部数据不实时输出时，发生诸如减慢声音，跳过声音等的麻烦。一种解码方法，其中，当通过使用PC解码编码的视频或音频信号时，可以通过将用于实现音频信号的实时再现的目标解码结束时间与用于每个解码的实际解码结束时间进行比较来实时地再现音频信号并且当实际解码结束时间从目标解码结束时间延迟时，通过暂时中断视频信号解码或降低视频信号解码的优先级。一种解码方法，其中通过使用PC对编码的视频或音频信号进行解码时使用至少三帧的缓冲器来执行用于有效执行数据输入，音频信号解码和视频信号解码的调度。

4. 发明申请

WO99000986A1 SYSTEM, DEVICE, AND METHOD FOR STREAMING A MULTIMEDIA FILE ENCODED AT A VARIABLE BITRATE 审中-公开
标题翻译：用于流式传输可变比特币的多媒体文件的系统，设备和方法
公开(公告)号：WO99000986A1
公开(公告)日：1999-01-07
申请号：PCT/US1998/008304
申请日：1998-04-21
IPC分类号： H04N5/00 , H04N7/173 , H04N7/46 , H04N7/50 , H04N7/26 , H04N7/52 , H04N7/56 , H04N7/62
CPC分类号： H04N21/6125 , H04N7/17336 , H04N19/132 , H04N19/587 , H04N19/61 , H04N21/234354 , H04N21/234381 , H04N21/2402 , H04N21/242 , H04N21/26241 , H04N21/2662 , H04N21/472
摘要： Data is encoded at a variable bitrate (210, 220) and formed into packets (230) having a server time stamp. The server time stamps are constructed so that the streaming of the packets will be substantially constant, not variable, and equal to a desired, bugeted bandwidth, such as one corresponding to fully utilizing a modem link. to schedule the sending of packets, the server (240) uses the server time stamp, rather than, for example, the play-back time stamp. By having the data encoded at a variable bitrate, the otherwise-unused capacity, i.e., the capacity not used by the server, can be used to send packets needed in the future. This is accomplished by the server time stamps scheduling packets for transmission that will not be needed until the future.
摘要翻译：数据以可变比特率（210,220）编码并形成具有服务器时间戳的分组（230）。服务器时间戳被构造为使得分组的流传输将基本上是恒定的，不可变的，并且等于所需的被错误的带宽，例如对应于完全利用调制解调器链路的带宽。为了调度分组的发送，服务器（240）使用服务器时间戳，而不是例如播放时间戳。通过使数据以可变比特率编码，否则未使用的容量，即服务器未使用的容量，可用于发送将来需要的分组。这是通过服务器时间戳调度数据包来实现的，直到将来才能进行传输。

5. 发明申请

WO2015159120A1 DYNAMIC COLOR DEPTH FOR HDCP OVER HDMI 审中-公开
标题翻译：用于HDMI的HDCP的动态颜色深度
公开(公告)号：WO2015159120A1
公开(公告)日：2015-10-22
申请号：PCT/IB2014/060717
申请日：2014-04-14
申请人： ELLIPTIC TECHNOLOGIES INC.
发明人： ADIKARI, A.A., Jithra , ELIAS, Andrew, Alexander , LECKETT, Neil
IPC分类号： H04N21/254 , H04N19/186 , H04N7/56
CPC分类号： H04N21/4367 , H04N21/43635
摘要： A method for determining the color depths of the video data for a selected frame in High- bandwidth Digital Content Protection (HDCP) video data transmitted over a High Definition Multimedia Interface (HDMI), in which (a) the beginning of the selected frame is marked with a vertical synchronization (VSYNC) signal and (b) a mark in a window of opportunity (WOO) for the selected frame indicates whether or not that frame is encrypted. The method detects, for the selected frame, the length of the interval between a VSYNC signal and the location of at least one of (i) the start of the corresponding WOO and (ii) the mark indicating whether or not the selected frame is encrypted, and then determines the color depth of the video data for the selected frame based on the detected length.
摘要翻译：一种用于确定通过高清晰度多媒体接口（HDMI）传输的高带宽数字内容保护（HDCP）视频数据中的所选帧的视频数据的颜色深度的方法，其中（a）所选帧的开始是标记有垂直同步（VSYNC）信号，并且（b）所选帧的机会窗口（WOO）中的标记指示该帧是否被加密。该方法针对所选择的帧检测VSYNC信号与（i）对应WOO的开始和（ii）指示所选择的帧是否被加密中的至少之一的位置之间的间隔的长度，然后基于检测到的长度来确定所选择的帧的视频数据的颜色深度。

6. 发明申请

WO2006126113A3 EQUIPMENT FOR AUDIO-VIDEO PROCESSING SYSTEM 审中-公开
标题翻译：音视频处理系统设备
公开(公告)号：WO2006126113A3
公开(公告)日：2007-02-15
申请号：PCT/IB2006051433
申请日：2006-05-08
申请人： KONINKL PHILIPS ELECTRONICS NV , VANDERHEIJDEN GERARDUS W T , KATS ROMKE , SNIJDERS RICHARD A M J
发明人： VANDERHEIJDEN GERARDUS W T , KATS ROMKE , SNIJDERS RICHARD A M J
IPC分类号： H04N7/56 , H04N5/073 , H04N5/60 , H04N7/52
CPC分类号： H04N21/44 , H04N5/0736 , H04N5/602 , H04N21/2368 , H04N21/4307 , H04N21/4341 , H04N21/439
摘要： The invention provides a processing system, comprising a video signal processing unit for processing a video signal, the video signal processing entailing a video signal processing delay, and video delay control for controlling said video signal processing unit in dependence on a maximum allowed value for the video signal processing delay. The invention also provides an audio-video signal source, comprising an output for sending a video signal to a video signal processing unit, and an output for communicating to the video signal processing unit a maximum allowed value for a video signal processing delay entailed by video signal processing in the video signal processing unit. The invention further provides an audio signal processing unit, comprising an audio signal processing unit, said audio signal processing entailing an audio signal processing delay not exceeding a maximum audio delay, and an output for communicating to the video signal processing unit a maximum allowed value for a video signal processing delay entailed by video signal processing in the video signal processing unit, the maximum allowed value for the video signal processing delay depending on the maximum audio delay.
摘要翻译：本发明提供了一种处理系统，包括用于处理视频信号的视频信号处理单元，涉及视频信号处理延迟的视频信号处理以及用于根据最大允许值控制所述视频信号处理单元的视频延迟控制视频信号处理延迟。本发明还提供了一种音频 - 视频信号源，包括用于将视频信号发送到视频信号处理单元的输出端和用于与视频信号处理单元通信的输出，用于由视频所产生的视频信号处理延迟的最大允许值视频信号处理单元中的信号处理。本发明还提供了一种音频信号处理单元，包括音频信号处理单元，所述音频信号处理涉及不超过最大音频延迟的音频信号处理延迟，以及用于向视频信号处理单元传送最大允许值的输出在视频信号处理单元中由视频信号处理引起的视频信号处理延迟，视频信号处理延迟的最大允许值取决于最大音频延迟。

7. 发明申请

WO2004088990A3 MEDIA STORAGE CONTROL 审中-公开
标题翻译：媒体存储控制
公开(公告)号：WO2004088990A3
公开(公告)日：2004-11-18
申请号：PCT/GB2004001506
申请日：2004-04-05
申请人： BBC TECHNOLOGY HOLDINGS LTD , MURRAY STUART , CONWAY NEVILLE
发明人： MURRAY STUART , CONWAY NEVILLE
IPC分类号： G06F17/30 , G11B27/031 , G11B27/34 , H04H20/42 , H04N5/00 , H04N7/56 , H04N5/765
CPC分类号： H04N21/262 , G11B27/031 , G11B27/34 , H04H20/42 , H04H60/06
摘要： A network control apparatus for controlling via a first network a media storage device, and a network control apparatus for remotely monitoring such a device. Timecode information from the media storage device is sampled, and output via the network such that not all stored timecode information produced is output. An indication of the rate of change of timecode is also output. The remote monitoring apparatus receives timecode information and rate of change information and derives reconstructed timecode information. The invention is applicable to remote operation of a VTR or VTRs over a network, for example for archiving in a media production application.
摘要翻译：一种用于经由第一网络控制媒体存储设备的网络控制装置以及用于远程监视这种设备的网络控制设备。来自媒体存储设备的时间码信息被采样，并且经由网络输出，使得不是产生的所有存储的时间码信息都被输出。也输出时间码变化率的指示。远程监控装置接收时间码信息和变化率信息并导出重建的时间码信息。本发明适用于通过网络远程操作VTR或VTR，例如用于在媒体制作应用程序中进行存档。

8. 发明申请

WO01067744A2 METHOD AND APPARATUS FOR DATA RATE SYNCHRONIZATION 审中-公开
标题翻译：数据速率同步的方法和装置
公开(公告)号：WO01067744A2
公开(公告)日：2001-09-13
申请号：PCT/US2001/006743
申请日：2001-03-02
IPC分类号： G06Q40/00 , H04J3/06 , H04L7/02 , H04N5/04 , H04N5/44 , H04N7/10 , H04N7/173 , H04N7/56
CPC分类号： H04N21/4302 , G06Q40/02 , G06Q40/08 , H04J3/0638 , H04L7/0029 , H04N5/04 , H04N5/4401 , H04N7/10 , H04N7/56 , H04N21/234 , H04N21/2365 , H04N21/242 , H04N21/4305 , H04N21/4347 , H04N21/44 , H04N2007/17372
摘要： A communication system adjusts data rate to compensate for frequency variations in conversion clocks. The communication system includes a conversion clock at a transmitter and a conversion clock at a receiver that advance respective counters. A difference between the counters controls a resampling of digital data sent from the transmitter to the receiver. The conversion clocks run independently of each other. The difference between the counters incremented by respective conversion clocks provides an indication of the difference in frequencies between the conversion clocks. The difference is used to determine the ratio at which digitized information is resampled at the receiver before being converted to the analog domain.
摘要翻译：通信系统调整数据速率以补偿转换时钟的频率变化。通信系统包括发射机处的转换时钟和接收机处的转换时钟，以使各个计数器前进。计数器之间的差异控制从发射机发送到接收机的数字数据的重采样。转换时钟彼此独立运行。由相应的转换时钟增加的计数器之间的差异提供了转换时钟之间的频率差异的指示。该差异用于确定在转换为模拟域之前在接收机处重新采样数字化信息的比率。

9. 发明申请

WO9940727A3 METHOD OF SWITCHING OF CODED VIDEO SEQUENCES AND CORRESPONDING DEVICE 审中-公开
标题翻译：编码视频序列的切换方法及相应的设备
公开(公告)号：WO9940727A3
公开(公告)日：1999-10-21
申请号：PCT/IB9900113
申请日：1999-01-25
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS SVENSKA AB
发明人： MARTIN FRANCOIS
IPC分类号： H04N7/26 , H04N7/24 , H04N7/56 , H04N7/58
CPC分类号： H04N21/23424 , H04N21/23805 , H04N21/2401
摘要： The invention relates to a method of switching from a first to a second coded video sequence when the bitrate of the second one is higher than the bitrate of the first one, and to a corresponding device. If the addition of the bits respectively associated to the last transmitted picture (02) of the first sequence and to the first transmitted picture (N1) of the second sequence gives at the decoding time of (02) a number greater than the size of the decoder's buffer, then the bitrate of the second sequence is increased with respect to the higher bitrate.
摘要翻译：本发明涉及当第二个编码视频序列的比特率高于第一个编码视频序列的比特率时从第一个编码视频序列切换到第二个编码视频序列的方法，以及涉及相应的设备。如果分别与第一序列的最后发送图像（02）和第二序列的第一发送图像（N1）相关联的比特的相加在（02）的解码时间给出大于解码器的缓冲器，则第二序列的比特率相对于较高比特率增加。

10. 发明申请

WO2010035973A3 TRANSMISSION APPARATUS AND METHOD FOR PACKET DATA OF VARIABLE LENGTH, AND RECEIVING APPARATUS 审中-公开
标题翻译：可变长度的分组数据的传输装置和方法以及接收装置
公开(公告)号：WO2010035973A3
公开(公告)日：2012-12-27
申请号：PCT/KR2009005191
申请日：2009-09-11
申请人： KOREA ELECTRONICS TELECOMM , LEE NAM-KYUNG , CHANG DAE-IG , LEE HO-JIN
发明人： LEE NAM-KYUNG , CHANG DAE-IG , LEE HO-JIN
IPC分类号： H04N7/088 , H04N7/56
CPC分类号： H04N21/4385 , H04N21/2383 , H04N21/2389 , H04N21/242 , H04N21/4382 , H04N21/8547
摘要： A variable length packet data transmission apparatus and method are provided. The variable length packet data transmission apparatus using a variable length packet transmission technique includes a data transmitter (10) generating synchronization information for synchronizing data communication with a data receiving apparatus (20), including the generated synchronization information in transmission data to be transmitted according to a variable length packet transmission technique, and transmitting the transmission data including the synchronization information to the data receiving apparatus (20), and a data receiver (20) receiving the transmission data including synchronization information from a data transmission apparatus (10), reconstructing the synchronization information included in the received transmission data, and performing synchronization with the data transmission apparatus (10) using the reconstructed synchronization information.
摘要翻译：提供了一种可变长度分组数据传输装置和方法。使用可变长度分组传输技术的可变长度分组数据传输装置包括产生用于与数据接收装置（20）同步数据通信的同步信息的数据发射机（10），包括根据根据可变长度分组传输技术，并且将包括同步信息的传输数据发送到数据接收装置（20），以及从数据传输装置（10）接收包括同步信息的传输数据的数据接收机（20），重建同步信息包括在接收到的发送数据中，并且使用重构的同步信息与数据发送装置（10）进行同步。

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