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    Storage of video signals
    1.
    发明授权
    Storage of video signals 失效
    存储视频信号

    公开(公告)号：US5231487A

    公开(公告)日：1993-07-27

    申请号：US810335

    申请日：1991-12-19

    申请人： Terence R. Hurley ,  Jonathan J. Stone ,  James H. Wilkinson

    发明人： Terence R. Hurley ,  Jonathan J. Stone ,  James H. Wilkinson

    IPC分类号： H04N5/92 ,  G06T9/00 ,  G11B20/00 ,  G11B20/10 ,  G11B20/18 ,  H04N7/26 ,  H04N7/32

    CPC分类号： G11B20/10 ,  G11B20/00007 ,  G11B20/1833 ,  H04N19/124 ,  H04N19/186 ,  H04N19/1883 ,  H04N19/50 ,  H04N19/61 ,  H04N19/63 ,  H04N19/102 ,  H04N19/13 ,  H04N19/65 ,  H04N19/89

    摘要： Apparatus for storing a video signal includes a signal compression arrangement constituted by a spatial two-dimensional sub-band filtering arrangement that filters a digital video signal to form data sets constituting respective sub-bands of the two-dimensional spatial frequency domain, a quantizer that quantizes the data sets in accordance with respective values which are such that the amount of quantization of one of the data sets constituting a sub-band to which dc luminance information of the signal is at least predominantly confined is less than the average of the amounts of quantization of the remaining data sets, and an entropy encoder that selectively encodes at least some of the quantized data sets so that the quantized data sets, as selectively entropy encoded, form a compressed video signal. The signal compression arrangement is followed by a storage arrangement for storing the compressed video signal.

    摘要翻译： 用于存储视频信号的装置包括由空间二维子带滤波装置构成的信号压缩装置，其对数字视频信号进行滤波以形成构成二维空间频域的各个子带的数据集;量化器， 根据相应的值量化数据集，这些值使得构成信号的直流亮度信息至少主要被限制的子带的数据组之一的量化量小于该信号的直流亮度信息至少主要被限制的子带的量化的量 剩余数据集的量化，以及选择性地编码至少一些量化数据集的熵编码器，使得作为选择性熵编码的量化数据集形成压缩视频信号。 信号压缩布置之后是用于存储压缩视频信号的存储装置。

    Compression of video signals
    3.
    发明授权
    Compression of video signals 失效
    视频信号的压缩

    公开(公告)号：US5214502A

    公开(公告)日：1993-05-25

    申请号：US810337

    申请日：1991-12-19

    申请人： Jonathan J. Stone ,  Terence R. Hurley ,  James H. Wilkinson

    发明人： Jonathan J. Stone ,  Terence R. Hurley ,  James H. Wilkinson

    IPC分类号： H03M7/30 ,  G06T9/00 ,  H04N7/26 ,  H04N7/30 ,  H04N11/04

    CPC分类号： H04N11/042 ,  H04N19/126 ,  H04N19/186 ,  H04N19/63 ,  H04N19/10 ,  H04N19/102

    摘要： To enable a digital composite color video signal (NTSC or PAL) to be compressed directly, that is without dividing it into its components and compressing the components separately, the digital composite color video signal is decorrelated, for example by spatial sub-band filtering, to form data sets, for example sub-bands, representing dc luminance information, ac luminance information and dc chrominance information. The data sets are then quantized in accordance with respective quantization values from a quantization matrix, those quantization values being such that the amount of quantization of each of some of the data sets to which the dc luminance information and the dc chrominance information is at least predominantly confined is less than the average of the amounts of quantization of the remaining data sets. At least some of the quantized data sets are then entropy encoded.

    摘要翻译： 为了使数字复合彩色视频信号（NTSC或PAL）能够被直接压缩，即不将其划分成其组件并分别压缩组件，数字复合彩色视频信号例如通过空间子带滤波去相关， 以形成表示直流亮度信息，交流亮度信息和直流色度信息的数据组，例如子带。 然后根据来自量化矩阵的相应量化值量化数据组，这些量化值使得直流亮度信息和直流色度信息至少主要地对数据集中的每一个的量化量 限制小于剩余数据集的量化量的平均值。 至少一些量化数据集然后被熵编码。

    Compression of video signals
    4.
    发明授权
    Compression of video signals 失效
    视频信号的压缩

    公开(公告)号：US5223926A

    公开(公告)日：1993-06-29

    申请号：US810336

    申请日：1991-12-19

    申请人： Jonathan J. Stone ,  Terence R. Hurley

    发明人： Jonathan J. Stone ,  Terence R. Hurley

    IPC分类号： H03M7/30 ,  G06T9/00 ,  G11B20/00 ,  G11B20/10 ,  H04N1/41 ,  H04N7/26 ,  H04N7/30 ,  H04N7/32 ,  H04N11/04

    CPC分类号： G11B20/00007 ,  G11B20/10 ,  H04N19/124 ,  H04N19/129 ,  H04N19/186 ,  H04N19/1883 ,  H04N19/50 ,  H04N19/61 ,  H04N19/63 ,  H04N19/13 ,  H04N19/91

    摘要： A digital video signal is compressed by spatial sub-band filtering to form data sets constituting respective sub-bands of the two-dimensional spatial frequency domain. The data sets for a field or frame are stored. A first sequencer controls writing, in accordance with a desired sequence, of the stored data to a quantizer in which they are quantized in accordance with respective values, those values being such that the amount of quantization of at least a data set constituting a sub-band to which dc luminance information of the signal is at least predominantly confined is less than the average of the amounts of quantization of the remaining data sets. The quantized data sets are then encoded in an entropy encoder which has a first coding portion for coding quantized data representative of dc luminance information and a second coding portion for coding quantized data representative of ac luminance information. A second sequencer, which may be the same sequencer as the first sequencer, controls operation of the quantizer so that each datum (sample) written thereto is appropriately quantized, and controls operation of the entropy encoder so that each quantized sample is directed to the appropriate one of the first and second coding portions.

    摘要翻译： 通过空间子带滤波对数字视频信号进行压缩，形成构成二维空间频域的各子带的数据组。 存储字段或帧的数据集。 第一定序器根据期望的顺序控制将存储的数据写入量化器中，根据各个值对其进行量化，这些值使得至少构成子数据的数据集的量化量， 至少主要限制信号的直流亮度信息的频带小于剩余数据集的量化量的平均值。 量化数据组然后被编码在熵编码器中，该熵编码器具有用于对表示直流亮度信息的量化数据进行编码的第一编码部分和用于编码代表交流亮度信息的量化数据的第二编码部分。 可以与第一定序器相同的定序器的第二定序器控制量化器的操作，使得对其写入的每个数据（样本）被适当地量化，并且控制熵编码器的操作，使得每个量化样本被引导到适当的 第一和第二编码部分之一。

    Data compression
    5.
    发明授权
    Data compression 失效
    数据压缩

    公开(公告)号：US5613091A

    公开(公告)日：1997-03-18

    申请号：US141609

    申请日：1993-10-27

    申请人： Jonathan J. Stone ,  Terence R. Hurley

    发明人： Jonathan J. Stone ,  Terence R. Hurley

    IPC分类号： H03M7/30 ,  G06T9/00 ,  H04N1/41 ,  H04N7/26 ,  H04N7/30 ,  G06F15/00

    CPC分类号： H04N19/00 ,  H04N19/129 ,  H04N19/15 ,  H04N19/186 ,  H04N19/63 ,  H04N19/70 ,  H04N19/98

    摘要： A signal processing system includes a compression encoder 16 for compressing an input block of data samples including a plurality of sub-blocks, each sub-block including an array of data samples, into a block of compressed data. A sequencer 14' accesses the data samples of the input block to be passed to the compression encoder 16 with the sub-blocks being accessed in a predetermined first order and the data samples within each sub-block being accessed in a predetermined pseudo-random order such that successively accessed locations in the array of samples for a sub-block are scattered throughout that sub-block. The pseudo random accessing sequence enables occupancy of a buffer 73 for the compressed data block to be linearised. The sequencer can include a counter 62, the output of which addresses a look-up table 65 for generating the pseudo-random sequence in a repeatable manner.

    摘要翻译： 信号处理系统包括压缩编码器16，用于将包括多个子块的数据样本的输入块压缩到包含数据样本阵列的每个子块中，以压缩数据块。 定序器14'以预定的第一顺序访问要传送到压缩编码器16的输入块的数据样本，并以预定的伪随机顺序访问每个子块内的数据采样 使得用于子块的样本阵列中的连续访问的位置分散在该子块中。 伪随机访问序列使压缩数据块的缓冲器73的占用被线性化。 定序器可以包括计数器62，其输出端寻址用于以可重复的方式生成伪随机序列的查找表65。

    Data compression apparatus and method
    6.
    发明授权
    Data compression apparatus and method 失效
    数据压缩装置及方法

    公开(公告)号：US5260781A

    公开(公告)日：1993-11-09

    申请号：US885853

    申请日：1992-05-20

    申请人： Jonathan M. Soloff ,  Jonathan J. Stone ,  Terence R. Hurley

    发明人： Jonathan M. Soloff ,  Jonathan J. Stone ,  Terence R. Hurley

    IPC分类号： H03M7/30 ,  H04N7/26 ,  H04N7/30 ,  H04N7/133

    CPC分类号： H04N19/136 ,  H04N19/129 ,  H04N19/176 ,  H04N19/63 ,  H04N19/13 ,  H04N19/91

    摘要： A data compression system in which decorrelated data is fed to an entropy encoder (20) in batches having an internal monotonic decrease in average information content from start to end. This results in longer zero runs and more rapid attainment of end of block codes. A data sequencing circuit (18) comprising nested inter-sub band (60) and intra-sub band (72) counters for use with sub band filtered video data is also described.

    摘要翻译： 一种数据压缩系统，其中去相关数据被批量地馈送到熵编码器（20），其具有从开始到结束的平均信息内容的内部单调降低。 这导致更长的零运行和更快速地获得块代码的结束。 还描述了包括用于与子带滤波的视频数据一起使用的嵌套子频带（60）和子频带（72）计数器的数据排序电路（18）。

    Downsampling and prefilter implementation in television systems
    10.
    发明授权
    Downsampling and prefilter implementation in television systems 失效
    电视系统中的低采样和预滤波器实现

    公开(公告)号：US4700345A

    公开(公告)日：1987-10-13

    申请号：US700709

    申请日：1985-02-04

    申请人： Richard Morcom ,  Terence R. Hurley

    发明人： Richard Morcom ,  Terence R. Hurley

    IPC分类号： H04N11/02 ,  H03H15/00 ,  H03H15/02 ,  H03H17/00 ,  H03H17/06 ,  H04N7/12 ,  H04J15/00 ,  H04N9/64

    CPC分类号： H03H17/0607 ,  H03H15/023 ,  H03H17/0621 ,  H03H17/0664 ,  H03H2218/06

    摘要： A filter for filtering analog or digital samples using two sections, each including a multiplier stage having a plurality of multiplier sections, each with a respective output but a common input for applying a plurality of coefficients to a sample input to the multiplier stage, and a delay and summing network comprising a plurality of delay sections and alternate summing networks connected in series, the output of one of the multiplier sections being connected to the first delay sections in the series with each output of the other multiplier sections being connected to a respective summing network, the delay and summing network of one section being interleaved in series with the delay and summing network of the other section, and further comprising means for omitting alternate samples.

    摘要翻译： PCT No.PCT / GB84 / 00193 Sec。 371日期：1985年2月4日 102（e）1985年2月4日PCT PCT。1984年6月4日PCT公布。 WO94 / 05001 PCT出版物 日期：1984年12月20日。一种用于使用两个部分对模拟或数字样本进行滤波的滤波器，每个部分包括具有多个乘法器部分的乘法器级，每个具有相应的输出，但是具有用于将多个系数应用于采样输入的公共输入 以及包括多个延迟部分和串联连接的交替求和网络的延迟和求和网络，其中一个乘法器部分的输出连接到与其他乘法器的每个输出串联的第一延迟部分 部分连接到相应的求和网络，一个部分的延迟和求和网络与另一部分的延迟和求和网络串联交织，并且还包括用于省略替代样本的装置。