Picture signal transmitting method and apparatus
    3.
    再颁专利
    Picture signal transmitting method and apparatus 有权
    图像信号发送方法及装置

    公开(公告)号:USRE43111E1

    公开(公告)日:2012-01-17

    申请号:US12152287

    申请日:2008-05-12

    IPC分类号: H04N7/50 H04N7/26 G06T9/00

    摘要: A picture type identifier, indicating one of intra-picture coding (an I-picture), forward or backward predictive coding (a P-picture) and bi-directionally predictive coding (a B-picture), is included with a picture signal when the signal is encoded and when the signal is decoded. Each of initial and subsequent encoding and decoding is a function of the included picture type.

    摘要翻译: 指示图像间编码(I图像),前向或后向预测编码(P图像)和双向预测编码(B图像)之一的图像类型标识符被包括在图像信号中 信号被编码,并且信号被解码时。 初始和后续编码和解码中的每一个都是所包含的图像类型的函数。

    Method and apparatus for picture encoding and decoding
    5.
    发明授权
    Method and apparatus for picture encoding and decoding 失效
    图像编码和解码的方法和装置

    公开(公告)号:US6041160A

    公开(公告)日:2000-03-21

    申请号:US879038

    申请日:1997-06-19

    CPC分类号: H04N9/8042 H04N19/61

    摘要: A picture encoding method in which the picture signal can be scrambled without deteriorating the picture quality of the encoded picture of the MPEG system. A B-picture f the input picture signal is given random offset in the horizontal direction on the slice basis and encoded by an MPEG encoding device. An offset amount is written as a key on the disc along with the encoded data. A decoding device corrects the offset amount in the slice basis using the key of the reproduced signal. The picture signal can be scrambled in this manner without modifying the MPEG system.

    摘要翻译: 可以对图像信号进行加扰而不恶化MPEG系统的编码图像的图像质量的图像编码方法。 输入图像信号的B图像在片基上在水平方向上被赋予随机偏移量,并由MPEG编码装置编码。 偏移量与编码数据一起写入盘上的键。 解码装置使用再生信号的键来校正切片的偏移量。 可以以这种方式对图像信号进行加扰而不修改MPEG系统。

    Method and apparatus for encoding a digital signal, recording medium
used for storing the digital signal, and method and apparatus for
transmitting the digital signal
    6.
    发明授权
    Method and apparatus for encoding a digital signal, recording medium used for storing the digital signal, and method and apparatus for transmitting the digital signal 失效
    用于编码数字信号的方法和装置,用于存储数字信号的记录介质,以及用于发送数字信号的方法和装置

    公开(公告)号:US5949792A

    公开(公告)日:1999-09-07

    申请号:US841681

    申请日:1997-04-30

    摘要: A method for encoding a digital signal which is free from overflow and/or underflow of decoder buffer when video and audio data are reproduced while switching a plurality of bit streams from one to another, is disclosed. The method includes the steps of receiving a plurality of digital signal bit streams, detecting sizes of access units, as an encoding unit, of the plural digital signal bit streams, and decode times thereof, comparing the detected sizes of the access units at each decode time, with each other to select a maximum value thereof, providing a virtual stream composed of access units each having a size identical to the selected maximum value at each decode time, and packetizing each of the plural digital signal bit streams, wherein the plural digital signal bit streams are packetized by using padding packets each having a size corresponding to a difference in size between each access unit of the plural digital signal bit streams and that of the virtual stream, when the size of the access unit of the plural digital signal bit streams is less than the size of the access unit of the virtual stream. In accordance with the present invention, there are also provided an apparatus for encoding the digital signal, a method for recording the digital signal on a recording medium, and a method for transmitting the digital signal.

    摘要翻译: 公开了一种在将多个比特流从一个切换到另一个时再现视频和音频数据时,对解码器缓冲器的溢出和/或下溢的数字信号进行编码的方法。 该方法包括以下步骤:接收多个数字信号比特流,检测多个数字信号比特流中的多个数字信号比特流作为编码单元的大小及其解码时间,比较每个解码时检测到的存取单元大小 时间彼此选择其最大值,提供由每个具有与每个解码时间所选择的最大值相同的大小的访问单元组成的虚拟流,以及分组多个数字信号比特流中的每一个,其中多个数字 当多个数字信号比特的存取单元的大小在多个数字信号比特流的访问单元和虚拟流的访问单元之间的大小时,通过使用各自具有与多个数字信号比特流的每个访问单元之间的大小差异的大小的填充分组来分组信号比特流 流小于虚拟流的访问单元的大小。 根据本发明,还提供了一种用于对数字信号进行编码的装置,一种用于在记录介质上记录数字信号的方法和一种用于发送数字信号的方法。