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    Television system for digital transmission of picture signals
    1.
    发明授权
    Television system for digital transmission of picture signals 失效
    用于数字信号传输的电视系统

    公开(公告)号：US5109271A

    公开(公告)日：1992-04-28

    申请号：US727292

    申请日：1991-07-09

    申请人： Stephanus M.C. Borgers ,  Peter H. N. De With

    发明人： Stephanus M.C. Borgers ,  Peter H. N. De With

    IPC分类号： H04N7/30 ,  H04N7/00 ,  H04N11/04 ,  H04N19/60

    CPC分类号： H04N11/042

    摘要： In a television transmission system a digital luminance signal Dy and two digital color difference signals DCHR(1) and DCHR(2) are applied to a distribution circuit 3 at the transmitter end, which digital color difference signals are applied thereto possibly after having been subjected to a vertical decimation operation with a decimation factor R. The distribution circuit 3 partitions all these signals into groups of Q sample per group. After receiving an even number of luminance groups and an even number of chrominance groups, a first half of this number of luminance groups and a first half of this number of chrominance groups is applied to a first auxiliary picture signal output 3(4) of the distribution circuit 3, while simultaneously the other half of the number of luminance groups and the other half of the number of chrominance groups is applied to a second auxiliary picture signal output (3(5) of the distribution circuit. A transformer for performing a forward two-dimensional Q*Q transform is connected to each of these auxiliary picture signal outputs.

    Television picture signal processing in which video and graphic signals are compressed using different compression algorithms stored in a same memory, and decompressed for display
    2.
    发明授权
    Television picture signal processing in which video and graphic signals are compressed using different compression algorithms stored in a same memory, and decompressed for display 失效
    电视图像信号处理，其中使用存储在同一存储器中的不同压缩算法来压缩视频和图形信号，并且解压缩以进行显示

    公开(公告)号：US06175386B1

    公开(公告)日：2001-01-16

    申请号：US09090001

    申请日：1998-06-02

    申请人： Mihaela Van De Schaar-Mitrea ,  Peter H. N. De With

    发明人： Mihaela Van De Schaar-Mitrea ,  Peter H. N. De With

    IPC分类号： H04N5445

    CPC分类号： H04N5/44504 ,  H04N7/088 ,  H04N19/10 ,  H04N19/12 ,  H04N19/14 ,  H04N19/146 ,  H04N19/176 ,  H04N19/426 ,  H04N21/42653 ,  H04N21/482 ,  H04N21/485 ,  H04N21/488 ,  H04N21/8126

    摘要： Field or frame memories are often used in television receivers for video signal processing functions, such as noise reduction and/or flicker reduction. Television receivers also have graphic features such as teletext, menu-driven control systems, multilingual subtitling, an electronic TV-Guide, etc. In a method of processing television picture signals including both video (VID) and graphic (GFX) information, the video and graphic signals are individually compressed in accordance with different (lossy and loss-less, respectively) compression algorithms (22;24), stored in the same field or frame memory (21), and decompressed (23;25) after processing (20). As such, a significant reduction of memory capacity is achieved without adversely affecting the graphics quality. The method is not only applicable to locally generated graphic signals (TXT,OSD) but also to graphic information which is detected (26) as being embedded in a received television signal.

    摘要翻译： 通常在电视接收机中使用场或帧存储器来进行视频信号处理功能，例如噪声降低和/或闪烁降低。 电视接收机还具有诸如图文电视，菜单驱动控制系统，多语言字幕，电子电视指南等图形功能。在处理包括视频（VID）和图形（GFX）信息两者的电视图像信号的方法中，视频 根据存储在相同字段或帧存储器（21）中的不同（有损耗和无损耗）压缩算法（22; 24），并且在处理之后解压缩（23; 25）（20）来分别压缩图形信号 ）。 因此，在不会对图形质量产生不利影响的情况下实现显着降低存储器容量。 该方法不仅适用于本地生成的图形信号（TXT，OSD），还适用于被检测（26）嵌入在接收的电视信号中的图形信息。

    Television system for transmitting digitized television pictures from a transmitter to a receiver where different transform coding techniques are selected on the determination of motion
    4.
    发明授权
    Television system for transmitting digitized television pictures from a transmitter to a receiver where different transform coding techniques are selected on the determination of motion 失效
    用于将数字化电视图像从发射机发送到接收机的电视系统，其中在确定运动时选择不同的变换编码技术

    公开(公告)号：US5402185A

    公开(公告)日：1995-03-28

    申请号：US278711

    申请日：1994-07-22

    申请人： Peter H. N. De With ,  Roeland Den Bakker

    发明人： Peter H. N. De With ,  Roeland Den Bakker

    IPC分类号： H04N7/30 ,  G06T9/00 ,  H04N5/14 ,  H04N5/926 ,  H04N7/26 ,  H04N7/32 ,  H04N11/04 ,  H04N7/133

    CPC分类号： H04N19/112 ,  H04N5/144 ,  H04N5/9264

    摘要： A motion detector, particularly for use in a television system for transmitting television pictures in a digital form, is adapted to partition each picture into pixel blocks, to subject each pixel block to a modified intraframe transform for determining a first coefficient which corresponds to the basic picture having the lowest horizontal and highest vertical frequency, and to determine a plurality of further coefficients which correspond to basic pictures also having the lowest horizontal frequency, but a vertical frequency which is lower than that for the first coefficient. The motion detector signalizes the presence of motion within a pixel block if the first coefficient has a large absolute value, but if simultaneously none of the further coefficients has a sufficiently large absolute value. If the first coefficient has a sufficiently large absolute value, absence of motion is nevertheless signalized if simultaneously one of the further coefficients also has a sufficiently large absolute value.

    摘要翻译： 特别是用于以数字形式发送电视图像的电视系统中的运动检测器适于将每个图像划分为像素块，以使每个像素块经受修改的帧内变换，以确定对应于基本数据的第一系数 具有最低水平和最高垂直频率的图像，并且确定对应于也具有最低水平频率但是低于第一系数的垂直频率的基本图像的多个另外的系数。 如果第一系数具有大的绝对值，则运动检测器通知像素块内的运动的存在，但是如果同时没有一个进一步的系数具有足够大的绝对值。 如果第一系数具有足够大的绝对值，则如果同时其中一个系数也具有足够大的绝对值，则仍然发出不存在运动信号。

    Encoding circuit for transform coding of a picture signal and decoding circuit for decoding said signal
    5.
    发明授权
    Encoding circuit for transform coding of a picture signal and decoding circuit for decoding said signal 有权
    用于图像信号的变换编码的编码电路和用于解码所述信号的解码电路

    公开(公告)号：US07646813B2

    公开(公告)日：2010-01-12

    申请号：US10364857

    申请日：2003-02-07

    申请人： Peter H. N. De With ,  Stephanus M. C. Borgers

    发明人： Peter H. N. De With ,  Stephanus M. C. Borgers

    IPC分类号： H04N7/18

    CPC分类号： H04N19/126 ,  H04N5/9264 ,  H04N19/112 ,  H04N19/124 ,  H04N19/132 ,  H04N19/60

    摘要： An encoding circuit transforms a picture signal into blocks of, for example, 8*8 coefficients, in which each block of coefficients is read motion- adaptively. In the case of motion within a sub-picture, the block of coefficients is read in such an order that the obtained series of coefficients includes, as it were, two interleaved sub-series. The first series starts with a dc component. In a first embodiment, the second series starts with the most relevant motion coefficient. In a second embodiment, two interlaced sub-fields are separately transformed and the second series also starts with a dc coefficient. As a result, the coefficients are transmitted as much as possible in their order of significance. This particularly produces the largest possible clusters of zero value coefficients. Such clusters are transmitted as one compact run-length code so that an effective bit rate reduction is achieved, also for moving pictures.

    摘要翻译： 编码电路将图像信号变换为例如8×8系数的块，其中每个块系数被运动自适应地读取。 在子图像内运动的情况下，以所得到的一系列系数作为两个交错子序列的顺序读取系数块。 第一个系列以直流分量开始。 在第一实施例中，第二系列以最相关的运动系数开始。 在第二实施例中，两个隔行的子场被单独变换，第二个串也是以直流系数开始的。 结果，系数以其重要的顺序尽可能多地传输。 这特别产生了最大可能的零值系数簇。 这样的集群作为一个紧凑的游程长度代码被发送，使得实现有效的比特率降低，也用于运动图像。

    Encoding circuit for transform coding of a picture signal and decoding circuit for decoding said signal
    6.
    发明授权
    Encoding circuit for transform coding of a picture signal and decoding circuit for decoding said signal 有权
    用于图像信号的变换编码的编码电路和用于解码所述信号的解码电路

    公开(公告)号：US06385247B1

    公开(公告)日：2002-05-07

    申请号：US09634730

    申请日：2000-08-03

    申请人： Peter H. N. De With ,  Stephanus M. C. Borgers

    发明人： Peter H. N. De With ,  Stephanus M. C. Borgers

    IPC分类号： H04N730

    CPC分类号： H04N19/126 ,  H04N5/9264 ,  H04N19/112 ,  H04N19/124 ,  H04N19/132 ,  H04N19/60

    摘要： An encoding circuit transforms a picture signal into blocks of, for example, 8*8 coefficients, in which each block of coefficients is read motion- adaptively. In the case of motion within a sub-picture, the block of coefficients is read in such an order that the obtained series of coefficients includes, as it were, two interleaved sub-series. The first series starts with a do component, In a first embodiment, the second series starts with the most relevant motion coefficient. In a second embodiment, two interlaced sub-fields are separately transformed and the second series also starts with a dc coefficient. As a result, the coefficients are transmitted as much as possible in their order of significance. This particularly produces the largest possible clusters of zero value coefficients. Such clusters are transmitted as one compact run-length code so that an effective bit rate reduction is achieved, also for moving pictures.

    摘要翻译： 编码电路将图像信号变换为例如8×8系数的块，其中每个块系数被运动自适应地读取。 在子图像内运动的情况下，以所得到的一系列系数作为两个交错子序列的顺序读取系数块。 第一系列以一个do分量开始。在第一实施例中，第二系列以最相关的运动系数开始。 在第二实施例中，两个隔行的子场被单独变换，第二个串也是以直流系数开始的。 结果，系数以其重要的顺序尽可能多地传输。 这特别产生了最大可能的零值系数簇。 这样的集群作为一个紧凑的游程长度代码被发送，使得实现有效的比特率降低，也用于运动图像。

    Apparatus for deriving a compatible low-definition interlaced television signal and other components for reconstructing the original signal from an interlaced high-definition television signal
    9.
    发明授权
    Apparatus for deriving a compatible low-definition interlaced television signal and other components for reconstructing the original signal from an interlaced high-definition television signal 失效
    用于导出兼容的低分辨率隔行扫描电视信号的装置和用于从隔行高清晰度电视信号重建原始信号的其它分量

    公开(公告)号：US5182645A

    公开(公告)日：1993-01-26

    申请号：US714284

    申请日：1991-06-12

    申请人： Marcel Breeuwer ,  Peter H. N. De With

    发明人： Marcel Breeuwer ,  Peter H. N. De With

    IPC分类号： H04N7/01 ,  H04N7/015 ,  H04N7/26

    CPC分类号： H04N19/635 ,  H04N7/015

    摘要： Apparatus for deriving a compatible low-definition interlaced television signal and other components for restructuring the original signal from an interlaced high-definition television signal. The HDTV signal is divided into four component signals by horizontal and vertical low-pass and high-pass QMF filtering. For the vertical filtering, one field of a frame is filtered by an odd-length filter, the other field by an even-length filter. A time delay of one sample is introduced before the high-pass odd-length QMF filter. The component signals are each subsampled by a factor of two after filtering. The component signal covering the low-frequency horizontal and low-frequency vertical range is a reduced definition interlaced TV signal. To reconstruct the original HDTV signal, all four component signals are upsampled and filtered and a one sample delay is introduced following the low-frequency odd-length filter.

    摘要翻译： 用于导出兼容的低分辨率隔行扫描电视信号和用于重构来自隔行高清晰度电视信号的原始信号的其它分量的装置。 HDTV信号通过水平和垂直低通和高通QMF滤波分为四个分量信号。 对于垂直滤波，帧的一个场被奇数长度的滤波器滤除，另一个场由一个偶数长度的滤波器滤波。 在高通奇数QMF滤波器之前引入一个采样的时间延迟。 分量信号在滤波后分别被二进制取样。 覆盖低频水平和低频垂直范围的分量信号是降低的定义隔行扫描信号。 为了重建原始的HDTV信号，所有四个分量信号被上采样和滤波，并且在低频奇数滤波器之后引入一个采样延迟。