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    Television system for transmitting pictures in a digital form
    4.
    发明授权
    Television system for transmitting pictures in a digital form 失效
    用于以数字形式发送图像的电视系统

    公开(公告)号：US5444490A

    公开(公告)日：1995-08-22

    申请号：US84834

    申请日：1993-06-29

    申请人： Peter H. N. de With ,  Stephanus J. J. Nijssen ,  Robert A. Brondijk ,  Wilhelmus H. A. Bruls

    发明人： Peter H. N. de With ,  Stephanus J. J. Nijssen ,  Robert A. Brondijk ,  Wilhelmus H. A. Bruls

    IPC分类号： H04N1/41 ,  G11B20/12 ,  H04N5/92 ,  H04N5/926 ,  H04N7/26 ,  H04N9/804 ,  H04N11/04 ,  H04N7/52

    CPC分类号： H04N11/044 ,  H04N9/8047 ,  G11B20/12 ,  H04N5/9264

    摘要： To be able to transmit television pictures in a digital form through a medium having a limited bandwidth, the pictures are subjected to picture transform and to variable-length coding. The picture to be transmitted is converted in this manner into a bit stream comprising code words of variable length. This bit stream is converted into a channel bit stream which is less sensitive to transmission errors. To this end the most significant code words (representing the average luminance and the coarse picture details) of sub-pictures of 8*8 pixels are accommodated at fixed bit positions of the channel bit stream. These code words can be retrieved by simple count-down of the bit positions. The other code words are distributed over the other bit positions. The decoder is relatively simple because the length of each block comprising significant code words is also transmitted. This length is preferably adapted to the extent of picture detail in the sub-picture.

    摘要翻译： 为了能够通过具有有限带宽的介质以数字形式发送电视图像，对图像进行图像变换和可变长度编码。 要发送的图像以这种方式被转换成包括可变长度的码字的比特流。 该比特流被转换成对传输错误不太敏感的信道比特流。 为此，8×8像素的子图像的最重要的码字（表示平均亮度和粗略图像细节）被容纳在信道位流的固定比特位置。 这些代码字可以通过位位置的简单倒数来检索。 其他码字分布在其他位位置。 解码器相对简单，因为包括重要码字的每个块的长度也被发送。 该长度优选地适应于副图像中的图像细节的程度。

    Device for transmitting television pictures and device for receiving said pictures
    5.
    发明授权
    Device for transmitting television pictures and device for receiving said pictures 失效
    用于发送电视图像的装置和用于接收所述图像的装置

    公开(公告)号：US06798836B1

    公开(公告)日：2004-09-28

    申请号：US09328693

    申请日：1997-10-14

    申请人： Peter H. N. De With ,  Stephanus J. J. Nijssen

    发明人： Peter H. N. De With ,  Stephanus J. J. Nijssen

    IPC分类号： H04N712

    CPC分类号： H04N19/517 ,  H04N19/51 ,  H04N19/593 ,  H04N19/61

    摘要： Device for transmitting television pictures in the form of transform coefficients and motion vectors. The motion vectors of a sub-picture are converted (20) into a series of difference vectors and a reference vector. The series is subsequently applied to a variable-length encoder (22) which encodes a run of zero values and a subsequent non-zero value into a code word of variable length. The variable-length encoder may be the same as the encoder which encodes the coefficients.

    摘要翻译： 用于以变换系数和运动矢量的形式发送电视图像的装置。 子图像的运动矢量被转换（20）成一系列差分矢量和参考矢量。 该系列随后被应用于可变长度编码器（22），其将零值的行程和随后的非零值编码为可变长度的码字。 可变长度编码器可以与编码系数的编码器相同。

    Extended definition video signal converter for use with a video recorder
    8.
    发明授权
    Extended definition video signal converter for use with a video recorder 失效
    扩展清晰度视频信号转换器，用于录像机

    公开(公告)号：US5587802A

    公开(公告)日：1996-12-24

    申请号：US120987

    申请日：1993-09-13

    申请人： Franciscus H. M. Bergen ,  Jan J. Rotte ,  Stephanus J. J. Nijssen ,  Peter H. N. De With

    发明人： Franciscus H. M. Bergen ,  Jan J. Rotte ,  Stephanus J. J. Nijssen ,  Peter H. N. De With

    IPC分类号： H04N9/80 ,  H04N5/926 ,  H04N7/00 ,  H04N9/79 ,  H04N9/797 ,  H04N9/804 ,  H04N9/83 ,  H04N9/87 ,  H04N11/16

    CPC分类号： H04N7/007 ,  H04N5/9264 ,  H04N9/7925 ,  H04N9/797 ,  H04N9/8047 ,  H04N9/832 ,  H04N11/167 ,  H04N9/8722

    摘要： A converter with which an extended definition (ED) video signal may be converted into a signal that may be recorded by a video recorder and with which a signal read out by a video reorder may be converted to an ED video signal. The ED video signal includes first lines having a first luminance signal (Y.sub.1) and a chrominance signal (C), and second lines having no chrominance signal but a second luminance signal (Y.sub.2) in the form of a modulated luminance signal with suppressed carrier. The converter includes a separation unit which receives the ED video signal from an input terminal and has three outputs. A first output couples the first luminance signal to a first output terminal via a first signal combination unit. A second output couples the chrominance signal to a second output terminal via a second combination unit. The third output is coupled to the first output terminal via a mixer circuit and the first combination unit.

    摘要翻译： 可以将扩展定义（ED）视频信号转换成可由视频记录器记录并由视频重新排序读出的信号的信号转换成ED视频信号的转换器。 ED视频信号包括具有第一亮度信号（Y1）和色度信号（C）的第一行，以及不具有抑制载波的调制亮度信号形式的色度信号而是第二亮度信号（Y2）的第二行。 转换器包括从输入端接收ED视频信号并具有三个输出的分离单元。 第一输出经由第一信号组合单元将第一亮度信号耦合到第一输出端。 第二输出经由第二组合单元将色度信号耦合到第二输出端。 第三输出经由混频器电路和第一组合单元耦合到第一输出端。

    Method of and system for transmitting and receiving digitally encoded video images
    9.
    发明授权
    Method of and system for transmitting and receiving digitally encoded video images 失效
    用于发送和接收数字编码视频图像的方法和系统

    公开(公告)号：US5583651A

    公开(公告)日：1996-12-10

    申请号：US601270

    申请日：1996-02-14

    申请人： Peter H. N. De With ,  Stephanus J. J. Nijssen ,  Albert M. A. Rijckaert ,  Gerrit J. Keesman

    发明人： Peter H. N. De With ,  Stephanus J. J. Nijssen ,  Albert M. A. Rijckaert ,  Gerrit J. Keesman

    IPC分类号： G06T9/00 ,  H04N5/783 ,  H04N5/926 ,  H04N7/26 ,  H04N7/30 ,  H04N5/76

    CPC分类号： H04N5/9264 ,  H04N19/60 ,  H04N19/13 ,  H04N19/30 ,  H04N19/65 ,  H04N19/91 ,  H04N5/783

    摘要： Video images are encoded by transform coding, resulting in data blocks each including a DC-coefficient and a plurality of AC-coefficients. The coefficients of a number of said transform blocks are variable-length encoded and transmitted. In order to avoid a complete loss of datablocks in case of a transmission error, the most significant codewords of a group of blocks are transmitted first so as to achieve that at least the DC-level of the blocks is likely to be retained. The coefficients may also be recorded on a videorecorder. Fast playback of recorded images so encoded, leads to very poor quality because some data blocks are not being read in the search mode. To improve this quality the DC-coefficients and if desired predetermined AC-coefficients of selected ones of the transform blocks to be recorded on one track are packed together to form a DC-packet and such packet is recorded on a selected part of the track. The DC-packet is chosen such that it can be read out as a unit at various search speeds, and can be read partially at higher search speeds.

    摘要翻译： 视频图像通过变换编码进行编码，得到各自包含DC系数和多个AC系数的数据块。 所述多个变换块的系数被可变长度编码和发送。 为了避免在传输错误的情况下数据块的完全丢失，首先发送一组块的最重要的码字，以便达到至少可以保留块的DC级别。 系数也可以记录在录像机上。 由于某些数据块在搜索模式下未被读取，因此快速重放所编码的记录图像，导致质量非常差。 为了提高这种质量，要记录在一个磁道上的DC系数以及如果期望的所选择的变换块的预定AC系数被打包在一起以形成DC分组，并且这样的分组被记录在轨道的选定部分上。 选择DC分组，使得其可以以各种搜索速度作为单元读出，并且可以在较高的搜索速度下部分地读取。

    System and apparatus for recording and reproducing and extended definition video signal in/from a track on a magnetic carrier
    10.
    发明授权
    System and apparatus for recording and reproducing and extended definition video signal in/from a track on a magnetic carrier 失效
    用于在磁性载体上/从磁道上记录和再现和扩展定义视频信号的系统和装置

    公开(公告)号：US5293248A

    公开(公告)日：1994-03-08

    申请号：US869290

    申请日：1992-04-15

    申请人： Franciscus H. M. Bergen ,  Jan J. Rotte ,  Stephanus J. J. Nijssen ,  Peter H. N. De With

    发明人： Franciscus H. M. Bergen ,  Jan J. Rotte ,  Stephanus J. J. Nijssen ,  Peter H. N. De With

    IPC分类号： H04N9/80 ,  H04N5/926 ,  H04N7/00 ,  H04N9/79 ,  H04N9/797 ,  H04N9/804 ,  H04N9/83 ,  H04N9/87 ,  H04N11/16

    CPC分类号： H04N7/007 ,  H04N5/9264 ,  H04N9/7925 ,  H04N9/797 ,  H04N9/8047 ,  H04N9/832 ,  H04N11/167 ,  H04N9/8722

    摘要： A system for recording and reproducing an extended definition (ED) video signal in/from a track on a magnetic record carrier wherein an ED video signal, such as a PAL-PLUS video signal, includes first lines having a first luminance signal (Y.sub.1) and a chrominance signal (C), and second lines having no chrominance signal but a second luminance signal (Y.sub.2) in the form of a modulated luminance signal with suppressed carrier. The recording device includes a first signal path (11,31,32,16) for processing the first luminance signal, a second signal path (11,18) for processing the chrominance signal and a third signal path (10,30,32,16) for processing the second luminance signal prior to the three signals being combined (22) and recorded on the record carrier. The reproducing device also includes a first (48,50) a second (52,53) and a third signal path (48,73,83) for processing the first luminance signal, the chrominance signal, and the second luminance signal, respectively. Furthermore, a converter is described with which an ED video signal may be converted to a signal that may be recorded by a video recorder and with which a signal read out by a video recorder may be converted to an ED video signal.

    摘要翻译： 一种用于在磁记录载体上的轨道中记录和再现扩展定义（ED）视频信号的系统，其中诸如PAL-PLUS视频信号的ED视频信号包括具有第一亮度信号（Y1）的第一行， 和色度信号（C），以及不具有抑制载波的调制亮度信号形式的色度信号而是第二亮度信号（Y2）的第二行。 记录装置包括用于处理第一亮度信号的第一信号路径（11,31,32,16），用于处理色度信号的第二信号路径（11,18）和第三信号路径（10,30,32， 16），用于在三个信号被组合（22）之前处理第二亮度信号并记录在记录载体上。 再现装置还包括分别用于处理第一亮度信号，色度信号和第二亮度信号的第一（48,50），第二（52,53）和第三信号路径（48,73,83）。 此外，描述了一种转换器，其中可以将ED视频信号转换成可以由视频记录器记录的信号，并且由视频记录器读出的信号可以被转换为ED视频信号。