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209 条记录 (耗时 0.029 秒)

    Dynamic delay equalization for media transport
    2.
    发明授权
    Dynamic delay equalization for media transport 有权

    公开(公告)号：US11343552B2

    公开(公告)日：2022-05-24

    申请号：US17009705

    申请日：2020-09-01

    申请人： Biamp Systems, LLC

    发明人： Eugene Gurfinkel ,  Michael K. Davis ,  Charles H. Van Dusen

    IPC分类号： H04N21/242 ,  H04N5/21 ,  H04N9/475 ,  H04L47/22 ,  H04J3/06 ,  H04N7/54 ,  H04N21/24 ,  H04N21/43 ,  H04N21/6437 ,  H04N21/2368

    摘要： Systems and methods of the present disclosure provide for dynamic delay equalization of related media signals in a media transport system. Methods include receiving a plurality of related media signals, transporting the related media signals along different media paths, calculating uncorrected propagation delays for the media paths, and delaying each of the related media signals by an amount related to the difference between the longest propagation delay (of the uncorrected propagation delays) and the uncorrected propagation delay of the related media signal/media path. Calculating the uncorrected propagation delays and delaying the related media signals may be performed in response to a change to the propagation delay of at least one of the related media signals/media paths. Additionally or alternatively, calculating the uncorrected propagation delays and delaying the related media signals may be performed while transporting the related media signals.

    Audio and video synchronizing apparatus and method
    5.
    发明授权
    Audio and video synchronizing apparatus and method 有权
    音视频同步装置及方法

    公开(公告)号：US07982803B2

    公开(公告)日：2011-07-19

    申请号：US11401798

    申请日：2006-04-10

    申请人： Jong Wook Lee

    发明人： Jong Wook Lee

    IPC分类号： H04N7/54 ,  H04N5/06

    CPC分类号： H04N5/775 ,  H04N5/04

    摘要： Provided is an audio video synchronizing apparatus and method in a video processing equipment. It is detected whether or not an external device connected to an audio/video output port of the video processing equipment is an audio system, and an audio signal synchronized with a video signal outputted to a display device of the video processing equipment is provided to the audio system through an audio output port when the detection result shows that the external device is the audio system. Accordingly, a vide signal on a screen is synchronized with an audio signal outputted from the audio system.

    摘要翻译： 提供了一种视频处理设备中的音频视频同步装置和方法。 检测连接到视频处理设备的音频/视频输出端口的外部设备是否是音频系统，并且将与输出到视频处理设备的显示设备的视频信号同步的音频信号提供给 音频系统通过音频输出端口，当检测结果显示外部设备是音频系统时。 因此，屏幕上的视频信号与从音频系统输出的音频信号同步。

    Method and device for insertion of asynchronous data in a digital signal
    8.
    发明授权
    Method and device for insertion of asynchronous data in a digital signal 失效
    用于在数字信号中插入异步数据的方法和装置

    公开(公告)号：US5970071A

    公开(公告)日：1999-10-19

    申请号：US492600

    申请日：1995-06-20

    申请人： Thomas Le Garrec

    发明人： Thomas Le Garrec

    IPC分类号： H04N7/12 ,  H03H17/06 ,  H04J3/16 ,  H04N7/025 ,  H04N7/03 ,  H04N7/035 ,  H04N7/088 ,  H04N7/24 ,  H04N7/54 ,  H04J3/12

    CPC分类号： H03H17/0628 ,  H04J3/1605 ,  H04N7/0882 ,  H04N7/24 ,  H04N7/54

    摘要： The disclosure concerns a procedure for insertion of samples representing digital data from a first source having a first bit rate in a digitized signal from a second source having a second bit rate, wherein the second bit rate is greater than the first bit rate, and each data of the first source is associated with at least one sample of a series of samples at the second bit rate, the samples being presented to a polyphase filter for which a set of coefficients is associated with a specific phase error previously introduced by said associations, the filtered samples being included in the digitized signal. The invention also includes a device that implements the above insertion procedure. The invention is applicable notably in the field of insertion of Teletext data into a digitized video signal.

    摘要翻译： 本公开涉及一种用于将来自具有来自具有第二比特率的第二源的数字化信号中的具有第一比特率的第一源的样本表示为数字数据的步骤，其中第二比特率大于第一比特率，并且每个 第一源的数据与第二比特率的一系列样本的至少一个样本相关联，所述样本被呈现给多相滤波器，其中一组系数与由所述关联先前引入的特定相位误差相关联， 滤波后的样本被包括在数字化信号中。 本发明还包括实现上述插入过程的装置。 本发明特别适用于将图文电视数据插入数字化视频信号的领域。

    Macroblock coding including difference between motion vectors
    9.
    发明授权
    Macroblock coding including difference between motion vectors 失效
    宏块编码包括运动矢量之间的差异

    公开(公告)号：US5946042A

    公开(公告)日：1999-08-31

    申请号：US886804

    申请日：1997-07-02

    申请人： Motoki Kato

    发明人： Motoki Kato

    IPC分类号： H04N19/50 ,  G06T9/00 ,  H03M7/36 ,  H04N7/54 ,  H04N19/107 ,  H04N19/112 ,  H04N19/137 ,  H04N19/139 ,  H04N19/176 ,  H04N19/196 ,  H04N19/42 ,  H04N19/423 ,  H04N19/46 ,  H04N19/463 ,  H04N19/503 ,  H04N19/51 ,  H04N19/52 ,  H04N19/573 ,  H04N19/577 ,  H04N19/593 ,  H04N19/61 ,  H04N19/625 ,  H04N19/70 ,  H04N19/91 ,  H04N7/32

    CPC分类号： H04N7/54 ,  H04N19/132 ,  H04N19/176 ,  H04N19/51 ,  H04N19/517 ,  H04N19/577 ,  H04N19/61 ,  H04N19/107

    摘要： A difference vector determination element used in an apparatus for coding motion vector includes register memories (PMV) of which number is equal to sum of maximum transmission numbers N and M of forward predictive and backward predictive motion vectors. Motion vector counter counts the number of transmission of motion vectors to output a motion vector count signal. Register index designation signal generator designates indices of (1.about.N (N+1).about.(N+M)) in order of transmission of forward predictive or backward predictive motion vectors on the basis of attached information such as motion compensation mode, prediction type, and picture structure, etc. of motion vector, and the motion vector count signal from the motion vector counter to allow switch to perform switching operation, thus allowing register memories (PMV) and motion vectors to have one-to-one correspondence relationship. Difference circuit determines a difference between a motion vector inputted thereto and a value taken out from register memory (PMV) caused to correspond to the motion vector on the basis of motion compensation mode, etc.

    摘要翻译： 在用于编码运动矢量的装置中使用的差分矢量确定元件包括数量等于正向预测和反向预测运动矢量的最大发送数N和M的和的寄存器存储器（PMV）。 运动矢量计数器计算运动矢量的传输次数，以输出运动矢量计数信号。 寄存器索引指定信号发生器根据诸如运动补偿模式，预测类型的附加信息，按照前向预测或反向预测运动向量的传输顺序来指定（1差D（N + 1）差（N + M））的索引 ，以及运动矢量的图像结构等，以及来自运动矢量计数器的运动矢量计数信号，以允许切换执行切换操作，从而允许寄存器存储器（PMV）和运动矢量具有一对一的对应关系。 差分电路确定输入的运动矢量与基于运动补偿模式等对应于运动矢量的从寄存器存储器（PMV）取出的值之间的差异。

    Adaptive video compression using variable quantization
    10.
    发明授权
    Adaptive video compression using variable quantization 失效
    使用可变量化的自适应视频压缩

    公开(公告)号：US5909250A

    公开(公告)日：1999-06-01

    申请号：US968796

    申请日：1997-11-06

    申请人： James M. Hardiman

    发明人： James M. Hardiman

    IPC分类号： G06T9/00 ,  H04N1/41 ,  H04N7/26 ,  H04N7/30 ,  H04N7/50 ,  H04N7/54 ,  H04N7/24

    CPC分类号： H04N7/54 ,  H04N19/124 ,  H04N19/126 ,  H04N19/16 ,  H04N19/176 ,  H04N19/186 ,  H04N19/42 ,  H04N19/423 ,  H04N19/46 ,  H04N19/61 ,  H04N21/4143 ,  G09G2340/02 ,  H04N19/146 ,  H04N19/149 ,  H04N19/15

    摘要： An apparatus that compresses video data uses a compression coder having control registers loaded with compression parameters, the apparatus being controlled to sense the size of compressed video data resulting from compressing a portion of source video data using a set of compression parameters, to automatically reload compression parameters that change as a function of the sensed size of compressed video data (the changed parameters being used with the next portion of video data to be compressed), and to store with each compressed portion an indication of the compression parameters used in compressing the portion.

    摘要翻译： 压缩视频数据的装置使用具有加载有压缩参数的控制寄存器的压缩编码器，该装置被控制以感测使用一组压缩参数压缩一部分源视频数据而产生的压缩视频数据的大小，以自动重新加载压缩 根据感测到的压缩视频数据的大小（改变的参数与待压缩的视频数据的下一部分一起使用）的参数变化，并且与每个压缩部分一起存储用于压缩部分的压缩参数的指示 。