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公开(公告)号：US5392071A
公开(公告)日：1995-02-21
申请号：US31902
申请日：1993-03-16
IPC分类号： H04N5/14 , G06T9/00 , H04N5/262 , H04N5/272 , H04N5/46 , H04N5/84 , H04N5/926 , H04N5/937 , H04N7/12 , H04N7/26 , H04N11/20 , H04N11/04
CPC分类号： H04N7/12 , H04N19/63 , H04N5/262 , H04N5/272 , H04N5/926 , H04N5/937 , H04N19/30 , H04N5/843
摘要： Image processing apparatus is described in which a source stream of data captured by a particular source is passed through a data splitter where it is split using one splitting technique into a plurality of split streams of data. These split streams of data each contain only part of the information within the source stream of data. The split streams of data are separately manipulated by a post production unit prior to being passed through a data combiner where they are recombined to form an output stream of data. The source stream of data and the output stream of data are of a higher resolution than the individual split streams of data. The post production unit includes at least one reformatter for reformatting the data stream to use a different splitting technique matched to the manipulation being performed in the post production unit.
摘要翻译： 描述了图像处理装置，其中由特定源捕获的源数据流通过数据分离器，其中使用一个分割技术将数据分离器分割成多个分离的数据流。 这些分离的数据流每个只包含源数据源中的部分信息。 分割的数据流在被传送通过数据组合器之前被后期制作单元分开操作，在这些数据组合器中它们被重新组合以形成输出的数据流。 数据的源流和数据的输出流具有比单独的分离数据流更高的分辨率。 后期制作单元包括至少一个重新格式化的重新格式化数据流以使用与在后期制作单元中执行的操作相匹配的不同的分割技术。
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2.发明授权Apparatus and methods for designing, analyzing or simulating signal processing functions 失效用于设计，分析或模拟信号处理功能的装置和方法
公开(公告)号：US5499373A
公开(公告)日：1996-03-12
申请号：US337150
申请日：1994-11-09
申请人： John W. Richards , Jonathan J. Stone , Alan Turner , Carl W. Walters , Mukesh Chouhan , Peter Kavanagh
发明人： John W. Richards , Jonathan J. Stone , Alan Turner , Carl W. Walters , Mukesh Chouhan , Peter Kavanagh
CPC分类号： G06F17/5009 , H04N5/9265 , H04N5/765
摘要： Data to be processed is stored within data files 20. Associated with each data file 20 is a header file 18. The header files 18 store data specifying a wide range of attributes of the data within the data files 20. A user selects a particular signal processing function 14 that he desires to use and this then accesses one or mope selected data files 20 and associated header files 18. The selected signal processing tool 14 only needs a set of the attributes stored within the header files 18. The signal processing tool 14 reads those attributes it requires and then manipulates the data within the data file 20. The provision of this structure allows a wide range of signal processing function tools to be integrated into a single system which may also be simply expanded.
摘要翻译： 要处理的数据被存储在数据文件20中。与每个数据文件20相关联的是头文件18.头文件18存储指定数据文件20内数据的宽范围属性的数据。用户选择特定信号 处理功能14，然后它访问一个或者选择的数据文件20和相关的头文件18.所选择的信号处理工具14仅需要存储在头文件18内的一组属性。信号处理工具14 读取它需要的属性，然后操纵数据文件20内的数据。提供这种结构允许将广泛的信号处理功能工具集成到单个系统中，这也可以简单地扩展。
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公开(公告)号：US5404139A
公开(公告)日：1995-04-04
申请号：US924925
申请日：1992-08-05
CPC分类号： H03M7/425
摘要： A serial data decoder is described for decoding interleaved variable length and fixed length codes. The decoder includes a state machine which moves between a branching hierarchy of states in dependence upon the bits of received serial data. When the state machine reaches a state corresponding to a complete variable length code having been received, it then enters a delay state lasting for the length of time necessary to receive the following fixed length code prior to return to a reset state. The state machine can be implemented using a static ram 10 storing data including pointers for controlling the movements between states.
摘要翻译： 描述串行数据解码器用于解码交织的可变长度和固定长度码。 解码器包括根据所接收的串行数据的比特在状态的分支层次之间移动的状态机。 当状态机达到对应于已经接收到的完整可变长度代码的状态时，它然后在返回到复位状态之前进入持续所需时间长度的延迟状态，以接收以下固定长度代码。 状态机可以使用存储包括用于控制状态之间的移动的指针的数据的静态压头10来实现。
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公开(公告)号：US5268905A
公开(公告)日：1993-12-07
申请号：US885863
申请日：1992-05-20
CPC分类号： H03H17/0664 , H03H17/0266
摘要： A sub-band filter system in which the frequency separated data is multiplexed together at the output of each filter stage. The stream of multiplexed data produced can have a block-by-block format or a sample-by-sample format. In the latter case, the filtering can be effected by a finite impulse response filter with switchable tap coefficients for effecting both decimation and high and low pass filtering.
摘要翻译： 频带分离数据在每个滤波器级的输出端被多路复用的子带滤波器系统。 所生成的复用数据流可以具有逐块格式或逐个样本格式。 在后一种情况下，可以通过具有可切换抽头系数的有限脉冲响应滤波器来实现滤波，以实现抽取和高通和低通滤波。
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公开(公告)号：US5231487A
公开(公告)日：1993-07-27
申请号：US810335
申请日：1991-12-19
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。
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6.发明授权Data formatter for formatting variable length data words into fixed length data words 失效用于将可变长度数据字格式化为固定长度数据字的数据格式器
公开(公告)号：US5471594A
公开(公告)日：1995-11-28
申请号：US248637
申请日：1994-05-23
申请人： Jonathan J. Stone
发明人： Jonathan J. Stone
摘要： A two stage data formatter is described for converting variable bit length code words into fixed bit length code words. The second formatting stage 12 splits the words into complete fixed length code words and returns any remainder bits to the first formatting stage 10. The first formatting stage 10 preprocesses the following data words by concatenating any remainder bits with the following variable bit length code word and updating its corresponding bit length code word. These preprocessed data words are then passed to the second formatting stage 12.
摘要翻译： 描述了用于将可变位长代码字转换成固定位长度代码字的两级数据格式器。 第二格式化阶段12将单词分解为完整的固定长度码字，并将任何余数位返回到第一格式化阶段10.第一格式化阶段10通过将任何剩余位与下列可变位长代码字连接来预处理以下数据字;以及 更新其相应的位长度代码字。 然后将这些预处理的数据字传递到第二格式化阶段12。
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7.发明授权Data encoder for producing and storing info runlength value, bit length values and encoded words from input data values 失效用于从输入数据值生成和存储信息运行长度值，位长度值和编码字的数据编码器
公开(公告)号：US5321397A
公开(公告)日：1994-06-14
申请号：US950896
申请日：1992-09-25
申请人： Jonathan J. Stone
发明人： Jonathan J. Stone
摘要： A data encoder is described for carrying out runlength coding. A count of zero input data values is made by a runlength counter 10. The input data values are simultaneously fed to a encoded word bit length indicator 6 and encoded word generator 8 which respectively produced outputs for each input data value. An encoder state machine 12 triggers the reading into an encoder data store 16 of the current runlength, encoded word bit length and encoded word at appropriate times. The encoder state machine triggers storage when a non-zero input data value is received. The encoder state machine 12 also prompts the generation and storage of continuation codes (corresponding to a predetermined maximum of zero input data values) and end of block codes (corresponding to an indication that all the subsequent input data values within a current block are zero values and can therefore be ignored) when appropriate data streams are encountered.
摘要翻译： 描述了用于执行游程长度编码的数据编码器。 零输入数据值的计数由游程长度计数器10进行。输入数据值被同时馈送到分别产生每个输入数据值的输出的编码字位长度指示符6和编码字生成器8。 编码器状态机12在适当的时间触发当前游程长度，编码字位长度和编码字的编码器数据存储器16的读取。 当接收到非零输入数据值时，编码器状态机触发存储。 编码器状态机12还提示产生和存储连续码（对应于预定最大值为零的输入数据值）和块码结束（对应于当前块内的所有后续输入数据值为零值的指示） 并且因此可以忽略）当遇到适当的数据流时。
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公开(公告)号：US5223926A
公开(公告)日：1993-06-29
申请号：US810336
申请日：1991-12-19
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。
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9.发明授权Video data compression apparatus for recording and reproducing compressed video data at their various compressed data rates 失效用于以各种压缩数据速率记录和再现压缩视频数据的视频数据压缩装置
公开(公告)号：US5612788A
公开(公告)日：1997-03-18
申请号：US245563
申请日：1994-05-18
申请人： Jonathan J. Stone
发明人： Jonathan J. Stone
CPC分类号： H04N19/162 , H04N19/115 , H04N19/124
摘要： Apparatus for recording and reproducing video data is described that utilizes data compression to increase storage capacity. Real time input video data is decorrelated, quantized and entropy encoded. User control of a compression control parameter, such as quantization step width, is provided so that the user can adjust the loss of fidelity through compression to a desired level. The compressed data is output to a storage RAM 38 at an unregulated varying data rate. The system allows real time storage of video data in a manner in which the loss of fidelity is held constant and the amount of storage capacity required for particular sections of input video data varies with the information content of that input video data.
摘要翻译： 描述了用于记录和再现视频数据的设备，其利用数据压缩来增加存储容量。 实时输入视频数据是去相关的，量化的和熵编码的。 提供诸如量化步长之类的压缩控制参数的用户控制，使得用户可以通过压缩将保真度的损失调整到期望的水平。 压缩数据以未调节的变化数据速率被输出到存储RAM38。 该系统允许以保持失真保持不变的方式实现视频数据的实时存储，并且输入视频数据的特定部分所需的存储容量的量随该输入视频数据的信息内容而变化。
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公开(公告)号：US5384869A
公开(公告)日：1995-01-24
申请号：US957159
申请日：1992-10-07
CPC分类号： G06F17/175 , H03H17/0202 , H04N19/122 , H04N19/186 , H04N19/635
摘要： Image processing apparatus is described for filtering a digital representation of a raster scanned image into a plurality of sub-bands in the two-dimensional spatial frequency domain, the resolution of the raster scanned image in a first direction (usually the horizontal direction) being greater than the resolution of the raster scanned image in a second direction (usually the vertical direction). The image processing apparatus has a decimation filter means comprising a number of multi-tap digital decimation filters for spatial filtering in the first and second directions. The mean of the filter lengths of the filters used for filtering in the first direction is greater than that of the filters used for filtering in the second direction. Complementary interpolation apparatus for reconstructing the image from the plurality of sub-bands is also described.
摘要翻译： 描述了图像处理装置，用于将光栅扫描图像的数字表示滤波成二维空间频域中的多个子带，光栅扫描图像在第一方向（通常为水平方向）上的分辨率更大 比在第二方向（通常是垂直方向）的光栅扫描图像的分辨率。 图像处理装置具有抽取滤波器装置，其包括多个用于在第一和第二方向上进行空间滤波的多抽头数字抽取滤波器。 用于在第一方向上过滤的滤波器的滤波器长度的平均值大于用于在第二方向上进行滤波的滤波器的滤波器长度的平均值。 还描述了用于从多个子带重建图像的互补插值装置。
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