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1.发明授权
公开(公告)号：US5425050A
公开(公告)日：1995-06-13
申请号：US149264
申请日：1993-11-09
IPC分类号： H04B1/707 , H04J13/00 , H04J13/02 , H04L1/00 , H04L27/26 , H04L27/34 , H04N7/24 , H04N19/89 , H04N7/167
CPC分类号： H04B1/707 , H04J13/10 , H04L1/004 , H04L1/0065 , H04L27/2602 , H04L27/3488 , H04N19/89 , H04N21/2383 , H04N21/4382 , H04J2013/0037 , H04L2001/0098
摘要： An apparatus for encoding a television production signal for transmission, the television production signal including a first input signal carrying a first class of data and a second input signal carrying a second class of data, the second class data requiring a higher-quality transmission the first class data. For each word of the first input signal, the first stage generates N serial samples of the first output sample stream, each of the N serial samples being formed by a different combination of a set of more than one of the N samples of the each word. The second stage includes an input stage combining the second input signal stream with the first output sample stream to generate an intermediate input sample stream; a serial-to-parallel converter receiving the intermediate input sample stream and producing a second stream of words therefrom, each of the words of which being a parallel grouping of M successive samples of the intermediate input sample stream; a Discrete Fourier Transform (DFT) module producing a parallel output stream of words that is the discrete Fourier transform of the second word stream; and a parallel-to-series converter generating the FDM output signal from the parallel output stream of the DFT module.
摘要翻译： 一种用于编码用于传输的电视制作信号的装置，所述电视制作信号包括承载第一类数据的第一输入信号和携带第二类数据的第二输入信号，所述第二类数据需要较高质量的传输，第一类 类数据。 对于第一输入信号的每个字，第一级产生第一输出采样流的N个串行样本，N个串行样本中的每一个由不同组合的每个单词的N个采样中的一个以上的组合形成 。 第二级包括将第二输入信号流与第一输出采样流组合以产生中间输入采样流的输入级; 串行到并行转换器，其接收所述中间输入样本流并从其产生第二个词流，其中每个词是所述中间输入样本流的M个连续样本的并行分组; 离散傅立叶变换（DFT）模块，其产生作为所述第二字流的离散傅立叶变换的单词的并行输出流; 以及从DFT模块的并行输出流产生FDM输出信号的并行到串联转换器。
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公开(公告)号：US4500919A
公开(公告)日：1985-02-19
申请号：US374804
申请日：1982-05-04
申请人： William F. Schreiber
发明人： William F. Schreiber
CPC分类号： H04N1/6005 , H04N1/6011 , H04N1/6075
摘要： A system for reproducing a color original in a medium using a selected multiplicity of reproduction colorants, comprising: a scanner for producing from said color original a train of appearance signals dependent on at least three color values of said original; aesthetic correction circuitry for introducing aesthetically desired alteration into said appearance signals to produce modified appearance signals; and colorant selection mechanism for receiving said modified appearance signals and for selecting corresponding reproduction signals representing values of said reproduction colorants to produce in said medium a color match of said modified appearance signals.
摘要翻译： 一种用于使用所选择的多种再现着色剂在介质中再现彩色原稿的系统，包括：扫描器，用于从所述彩色原稿生成取决于所述原稿的至少三种颜色值的一系列外观信号; 美学校正电路，用于将美观的改变引入所述外观信号以产生修改的外观信号; 以及着色剂选择机构，用于接收所述修改的外观信号，并用于选择表示所述再现着色剂的值的相应的再现信号，以在所述介质中产生所述修改的外观信号的颜色匹配。
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公开(公告)号：US4080634A
公开(公告)日：1978-03-21
申请号：US695187
申请日：1976-06-11
申请人： William F. Schreiber
发明人： William F. Schreiber
IPC分类号： G03G15/00 , B41J2/44 , G03F3/08 , G03F5/00 , G03G15/04 , G03G15/22 , G06K15/12 , G06T11/00 , H04N1/028 , H04N1/04 , H04N1/053 , H04N1/113 , H04N1/12 , H04N1/393 , H04N1/405 , H04N1/409 , H04N1/60 , H04N1/24 , H04N1/10 , H04N1/40 , H04N1/42
CPC分类号： H04N1/4092 , H04N1/0281 , H04N1/053 , H04N1/393 , H04N1/4058 , H04N1/0461 , H04N1/1135 , H04N1/12 , H04N2201/0471 , H04N2201/04768
摘要： Improvements in apparatus for making a halftone reproduction of an original document, of the type having an optical system comprising a source of light and a deflecting member for providing deflecting scanning and recording beams, a drive for providing relative motion between the original document and the scanning beam in a direction transverse to the direction of deflection thereof so that the scanning beam will trace a succession of scan lines across the document respectively during a succession of scanning cycles, an electro-optical pickup operative during each scanning cycle to detect the light from the scanning beam after it has impinged upon the document and to thereby provide an electrical output representative of the tone density (including any variation thereof) of the document along the scan line traced during that scanning cycle, video circuitry connected to the pickup for converting the electrical output into a video signal, a source of a succession of dot reference signals representative of the desired halftone screening pattern, output circuitry responsive to the reference and video signals to repeatedly compare the reference signals corresponding to the various cells of the halftone screening pattern with successive samples of the video signal and to generate halftone recording signals in accordance with the results of the comparison, a modulator in the optical system responsive to the output circuitry and operative during a succession of recording cycles to modulate the recording beam in accordance with the halftone recording signals, and a drive for providing relative motion between photosensitive output stock and the modulated recording beam in a direction transverse to the direction of deflection thereof so that the recording beam will trace a succession of record lines across the output stock respectively during the succession of recording cycles to record black and white dots in the cells of the halftone screening pattern.
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公开(公告)号：US5285470A
公开(公告)日：1994-02-08
申请号：US898309
申请日：1992-06-15
申请人： William F. Schreiber
发明人： William F. Schreiber
摘要： A noise-reduced method of transmitting a video signal including separating the video signal into a plurality of frequency subbands representing a corresponding plurality of subband images, each of which is made up of a corresponding array of blocks of samples; for a preselected one of the subband images, measuring the busyness of each of the blocks of that subband image; for the preselected subband image, assigning each of the blocks of that subband image to one of a plurality of groups, the plurality of groups including a group of more busy blocks and a group of less busy blocks; adaptively modulating the samples of the selected subband image by multiplying the selected subband image by a set of adaptive modulation factors, wherein a greater quantity of adaptive modulation factors is used for the blocks assigned to the group of more busy blocks as compared to the blocks assigned to the group of less busy blocks; and transmitting the adaptively modulated selected subband image along with the set of adaptive modulation factors corresponding thereto.
摘要翻译： 一种降噪方法，用于发送视频信号，包括将所述视频信号分离成表示对应的多个子带图像的多个频率子带，每个子带由对应的采样块阵列组成; 对于预选的一个子带图像，测量该子带图像的每个块的繁忙度; 对于预选的子带图像，将该子带图像的每个块分配给多个组中的一个，所述多个组包括一组更繁忙的块和一组较少繁忙的块; 通过将所选择的子带图像乘以一组自适应调制因子来自适应地调制所选择的子带图像的样本，其中与分配的块相比，分配给更繁忙块组的块使用更大量的自适应调制因子 到一群较不繁忙的街区; 以及自适应调制的选择子带图像以及与其对应的一组自适应调制因子。
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公开(公告)号：US4979041A
公开(公告)日：1990-12-18
申请号：US149673
申请日：1988-01-28
申请人： William F. Schreiber
发明人： William F. Schreiber
CPC分类号： H04N7/08 , H04N11/008 , H04N19/62 , H04N19/63
摘要： A high-definition television system in which a production signal is spatiotemporally filtered to remove frequency components and remaining components are transmitted over a channel. In various aspects, the filter produces a generally diamond-shaped frequency response in each of the spatial and spatiotemporal planes; the components selected for transmission are selected in accordance with the amount of motion in the image; the remaining components of image data are transmitted using double-sideband quadrature modulation; a high frequency component of the production signal shares the channel with additional data; and when the image data is transmitted using double-sideband quadrature modulation, baseband signals are derived from closely related areas of the image.
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公开(公告)号：US5127021A
公开(公告)日：1992-06-30
申请号：US730270
申请日：1991-07-12
申请人： William F. Schreiber
发明人： William F. Schreiber
摘要： A spread spectrum transmission system for transmitting a television signal, the transmission system including a module for dividing the television signal into a plurality of frequency components; a module for grouping at least some of the frequency components into a plurality of blocks, the grouping based upon the distance that each of the frequency components is from the origin in the frequency plane; a module for generating a plurality of spread spectrum signals, each of the spread spectrum signals being generated from a different one or more of the plurality of blocks; a module for combining more than one of the spread spectrum signals to form a combined signal; and a transmitter which receives the combined signal and generates a transmission signal therefrom.
摘要翻译： 一种用于发送电视信号的扩展频谱传输系统，该传输系统包括用于将电视信号分成多个频率分量的模块; 用于将至少一些频率分量分组成多个块的模块，基于频率分量中的每个频率分量来自频率平面中的原点的距离; 用于产生多个扩频信号的模块，每个所述扩频信号是从所述多个块中的不同的一个或多个块中产生的; 用于组合多于一个扩频信号以形成组合信号的模块; 以及发送器，其接收组合信号并从其生成发送信号。
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公开(公告)号：US5010405A
公开(公告)日：1991-04-23
申请号：US305796
申请日：1989-02-02
CPC分类号： H04N7/007 , H04N11/006 , H04N19/186 , H04N19/63 , H04N7/08
摘要： A television encoder for generating a receiver-compatible signal from a production video signal containing enhancement information which cannot be displayed on a standard receiver, the receiver-compatible signal being compatible with the standard receiver, the encoder including a filter bank for dividing the video signal into at least two groups of spatial frequency components including a first group and a second group, the first group containing members which when combined together form a standard video signal which is displayed by the standard receiver and the second group containing the enhancement information; a quantizer for quantizing at least one member of the first group; a combiner for adding at least one member of the second group to a quantized member of the first group to produce a modified first group; and a synthesizer for combining the members of the modified first group to generate the receiver-compatible signal.
摘要翻译： 一种电视编码器，用于从包含不能在标准接收机上显示的增强信息的生产视频信号产生接收机兼容信号，所述接收机兼容信号与标准接收机兼容，所述编码器包括用于分割视频信号的滤波器组 进入至少两组包括第一组和第二组的空间频率分量，所述第一组包括当组合在一起时形成由标准接收机显示的标准视频信号和包含增强信息的第二组的成员; 量化器，用于量化第一组中的至少一个成员; 组合器，用于将第二组的至少一个成员添加到第一组的量化成员以产生修改的第一组; 以及合成器，用于组合经修改的第一组的成员以产生接收机兼容的信号。
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8.发明授权
公开(公告)号：US5311543A
公开(公告)日：1994-05-10
申请号：US965227
申请日：1992-10-23
申请人： William F. Schreiber
发明人： William F. Schreiber
IPC分类号： H04B1/707 , H04J13/00 , H04J13/10 , H04L1/00 , H04L27/26 , H04L27/34 , H04N19/89 , H04N21/2383 , H04N21/438 , H04N7/167
CPC分类号： H04L1/0065 , H04B1/707 , H04J13/10 , H04L1/004 , H04L27/2602 , H04L27/3488 , H04N19/89 , H04N21/2383 , H04N21/4382 , H04J2013/0037 , H04L2001/0098
摘要： A 2-stage SS (spread-spectrum) system for transmitting a coded TV signal, said coded signal consisting of first components requiring near-perfect transmission and second components for which somewhat imperfect transmission is acceptable, wherein a first SS process is used to determine the relative SNR of the recovered said second components, wherein the output of said first SS process is added to said first components to form combined signals, wherein a second SS process operates on said combined signals and is used to nullify the effects of multipath in the transmission channel and/or establish a multistep threshold, wherein the output of said second stage is modulated on a carrier, and wherein a transmitter receives said modulated carrier and generates a transmission signal therefrom.
摘要翻译： 用于发送编码TV信号的2级SS（扩展频谱）系统，所述编码信号由需要接近完全传输的第一分量和可接受某些不完全传输的第二分量组成，其中使用第一SS过程来确定 所述恢复的所述第二组件的相对SNR，其中所述第一SS过程的输出被添加到所述第一分量以形成组合信号，其中第二SS过程对所述组合信号进行操作，并且用于消除所述第二SS处理中的多径的影响 传输信道和/或建立多步骤阈值，其中所述第二级的输出在载波上调制，并且其中发射机接收所述调制载波并从其生成传输信号。
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9.发明授权Transmission of signals through analog channels using adaptive frequency modulation 失效使用自适应频率调制通过模拟通道传输信号
公开(公告)号：US4907087A
公开(公告)日：1990-03-06
申请号：US61140
申请日：1987-06-10
申请人： William F. Schreiber
发明人： William F. Schreiber
CPC分类号： H04N7/083 , H04N11/048 , H04N7/045 , H04N19/30
摘要： Improved effifiency of frequency-modulated (FM) transmission of signals through analog channels, i.e., achievement of a higher bandwidth and/or signal-to-noise ratio (SNR) in the received signal for a given channel bandwidth and channel carrier-to-noise ratio (CNR), is accomplished by adaptive adjustment of the modulation index in such a manner that the spectrum of the channel signal more nearly occupies the entire channel more of the time than it would otherwise. Data is transmitted, along with the signal, to enable the receiver to calculate the modulation index at each instant so that the signal can be properly demodulated. The invention has application to FM transmission of signals representing visual image or other information, such as sound, for which human perception of noise is greatest in areas of low amplitude and/or frequency and reduced in and immediately adjacent to areas of high amplitude and/or frequency.
摘要翻译： 通过模拟通道提高频率调制（FM）信号传输的效率，即为给定的信道带宽和信道载波到信道带宽和/或信噪比（SNR）达到更高的带宽和/或信噪比（SNR） 噪声比（CNR））通过调制指数的自适应调整来实现，使得信道信号的频谱比其它情况更多地占据整个信道的时间。 与信号一起发送数据，使得接收机能够在每个瞬间计算调制指数，使信号能够被适当地解调。 本发明适用于表示视觉图像或其他信息（例如声音）的信号的FM传输，对于该信号，在低幅度和/或频率的区域中人类对噪声的感知最大，并且在高幅度区域和/ 或频率。
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公开(公告)号：US5212546A
公开(公告)日：1993-05-18
申请号：US582054
申请日：1990-09-14
CPC分类号： H04N1/6011
摘要： The color correction system will enhance an operator's ability to edit and correct the appearance of a color image. This system is particularly useful in desk-top publishing applications. A reference image with an overall desired visual impression is displayed on a screen. This reference image is known to print in an acceptable fashion and give a desired visual impression. When the image to be corrected is modified in order to approximate the visual impression of a reference picture, then the picture to be corrected should print acceptably.
摘要翻译： 颜色校正系统将增强操作者编辑和校正彩色图像外观的能力。 该系统在台式发布应用程序中特别有用。 具有整体所需视觉印象的参考图像显示在屏幕上。 已知该参考图像以可接受的方式打印并给出期望的视觉印象。 当要修正的图像被修改以便近似参考图像的视觉印象时，则要被校正的图像应该可接受地打印。
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